surface water supply of the united states 1926 · contents v gaging-station records continued....

PLEASE DO NOT DESTROY! OR THROWAWAY THIS PUBLICATION, if you bm» nofurther use for it, write to the Geological Surrey at Washington and ask for a frank to return it

UNITED STATES DEPARTMENT OF THE INTERIOR

SURFACE WATER SUPPLYof the UNITED STATES

1926PART I

NORTH ATLANTIC SLOPE DRAINAGE BASINS

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 621

UNITED STATES DEPARTMENT OF THE INTERIORBAY LYMAN WILBUR, Secretary

GEOLOGICAL SURVEY GEORGE OTIS SMITH, Director

Water-Supply Paper 621

SURFACE WATER SUPPLY of the UNITED STATES

1926PART I

NORTH ATLANTIC SLOPE DRAINAGE BASINS

NATHAN C. GROVER, Chief Hydraulic EngineerH. B. KINNISON, A. W. HARRINGTON, O. W. HARTWELL

A. H. HORTON, andJ. J. DIRZULAITISDistrict Engineers

Prepared in cooperation with the States ofMAINE, NEW HAMPSHIRE, MASSACHUSETTS, NEW YORK

NEW JERSEY, MARYLAND, and VIRGINIA

UNITED STATES

GOVERNMENT PRINTING OFFICE

WASHINGTON: 1930

Geological Survey, Box3l06,CapOklahoma CAY,

For sale by the Superintendent of Documents, Washington, D. C. ----- Price 30 cents

CONTENTS

PageAuthorization and scope of work____ _____________________________ 1Definition of terms______________- _ __________ ___________ 2Explanation of data___-____________-_-_--_------_-______-_-_____-- 2Accuracy of field data and computed results._________________________ 4Publications________ _________________-'---_-----_--____--________-_ 5Cooperation. _____________________________________________________ 10Division of work__________________________________________________ 11Oaging-station records ______________________________________ 12

St. John River Basin______________-___-__--_-_________________ 12St. John River at Van Buren, Me----------___--_-______-__ 12

St. Croix River Basin__________________________________ 13St. Croix River near Baileyville, Me_____________________ 13

Penobscot River Basin____ ______________L_____________ 15West Branch of Penobscot River at Millinocket, Me_________ 15West Branch of Penobscot River near Medway, Me__________ 16Penobscot River at West Enfield, Me_ ______________ 18East Branch of Penobscot River at Grindstone, Me.__________ 19Mattawamkeag River at Mattawamkeag, Me______________ 21Piscataquis River near Foxcroft, Me_____________________ 23Piscataquis River at Medford, Me__________________ 24Sebec River at Sebec, Me---_--------_------_-___-_________ 26Pleasant River at Milo, Me_____________________ 28Passadumkeag River at Lowell, Me________________________ 29

Kennebee River Basin______________________________________ 31Moosehead Lake at east outlet, Me__________________ 31Kennebec River at Moosehead, Me___ _______________ 32Kennebec River at The Forks, Me__________________ 34Kennebec River at Waterville, Me____________________ 35Dead River at The Forks, Me_____________________ 37Carrabasset River near North Anson, Me_______________ 38Cobbosseecontee Stream at Gardiaer, Me_____________ 40

Androscoggin River Basin________________________ 41Androscoggin River at Rumford, Me.___________________ 41Magalloway River at Aziscohos Dam, Me________________ 43

Presumpscot River Basin____ _______________________ 43Presumpscot River at outlet of Sebago Lake, Me__________ 43

Saco River Basin_____________________________ 45Saco River at Cornish, Me.______________________________ 45Saco River at West Buxton, Me.____________________ 47

t Ossipee River at Cornish, Me__ ___________________ 48Merrimack River Basin.__________________________________ 50

Pemigewasset River at Plymouth, N. H ______________ 50Merrimack River at Franklin Junction, N. H________ 51Merrimack River at Manchester, N. H_________________ 53Merrimack River at Lawrence, Mass____________________ 54Smith River near Bristol, N. H _____________ 56North Branch of Contoocook River near Antrim, N. H________ 57Nubanusit Brook near Peterboro, N. H_______________ 59

in

IV CONTENTS

Gaging-station records Continued.Merrimack River Basin Continued. Page

Suncook River at North Chichester, N. H___________________ 60Souhegan River at Merrimack, N. H__________________ 62South Branch of Nashua River Basin near Clinton, Mass______ 63Sudbury River and Lake Cochituate Basins near Ftamingham

and Cochituate, Mass______-__-_______-______________ 64Providence River Basin. _______________________________________ 66

Blackstone River at Worcester, Mass. _______________________ 66Thames River Basin___________________________________________ 67

Quinebaug River at Jewett City, Conn_______---_-_____ 67Connecticut River Basin____________.________________________ 69

Second Connecticut Lake near Pittsburg, N.H_-_--_- __ 69First Connecticut Lake near Pittsburg, N. H________-____ 70Connecticut River at First Connecticut Lake, near Pittsburg,

N. H-____.________________________________.___________ 71Connecticut River at South Newbury, Vt__________-_-_____ 73Connecticut River at White River Junction, Vt_____________ 74Connecticut River at Sunderland, Mass______________ ___ 76White River at West Hartford, Vt________.___._--_.___ 78Mascoma River at Mascoma, N. H_________,_____---_-_.___ 80Ashuelot River near Gilsum, N. H________________-_________ 81Ashuelot River at Hinsdale, N. H________________________ 83Otter Brook near Keene, N. H_______ ____-__ ___ _ 84South Branch of Ashuelot River at Webb, near Marlboro, N. H__ 86Millers River near Winchendon, Mass._________________ _-.^ 88Millers River at Erving, Mass___--___-_-----_-_---_-------- 89Sip Pond Brook near Winchendon, Mass_____________________ 91Priest Brook near Winchendon, Mass-_-------__---__-------- 92East Branch of Tully River near Athol, Mass______ ______ 94Moss Brook at Wendell Depot, Mass_______ _________ 95Deerfield River at Charlemont, Mass__________ __ ______ 97Ware River at Gibbs Crossing, Mass___-___ _______________ 99Swift River at West Ware, Mass_________________ 100Quaboag River at West Brimfield, Mass___ ____ ________ 102Westfield River at KnightviUe, Mass__ _ 103Westfield River near Westfield, Mass__ _ 105Middle Branch of Westfield River at Goss Heights, Mass-- _ 107Farmington River near New Boston, Mass____ _-_ 108

Housatonic River Basin_________________ ________ _ _____ 110Housatonic River near Great Barrington, Mass____- ____ 110Housatonic River at Falls Village, Conn___ _ _ 111

Hudson River Basin__________ ______ _______ _ 113Hudson River near Newcomb, N. Y_______ ________ 113Hudson River at Gooley, near Indian Lake, N. Y__ 115Hudson River at North Creek, N. Y___ 117Hudson River at Hadley, N. Y_ _ 118Hudson River at Mechanicville, N. Y____ __ 120Indian Lake Reservoir near Indian Lake, N. Y___ __ 122Indian River near Indian Lake, N. Y _______ ____ 123North Creek at North Creek, N. Y_____ 125Schroon River at Riverbank, N. Y_ 127Sacandaga River near Hope, N. Y_______________--_- _____ 129Sacandaga River at Hadley, N. Y ________________________ 131Batten Kill at Battenville, N. Y___. _-_ 132

CONTENTS v

Gaging-station records Continued.Hudson River Basin Continued. Page

Hoosic River near Eagle Bridge, N. Y__ _- _________ 134Mohawk River at Vischer Ferry Dam, N. Y ___ 136Mohawk River at Cohoes, N. Y___ 137West Canada Creek at Hinckley, N. Y___-_--__ ___ 141West Canada Creek at Kast Bridge, N. Y__ 142Ninemile feeder near Holland Patent, N. Y_ __ _ 144Fox Creek at West Berne, N. Y___________ _ 145Poesten Kill near Troy, N. Y_ ___ _ 147"Wailkill River at Pellets Island Mountain, N. Y______ 149Wallkill River at Gardiner, N. Y__._______ __ _ 150Shawangunk Kill at Pine Bush, N. Y_____________ 152

Hackensack River Basin__________________________ _______-_-- 153Hackensack River at New Milford, N. J __ 153

Passaic River Basin___-___-__-_____----_-_-__ _______ 155Passaic River near Millington, N. J____-_________________ 155Passaic River at Paterson, N. J_ ____. ___ __ 157Rockaway River at Boonton, N. J______ __ ______________ 158Whippany River at Morristown, N. J_________________ 160Ramapo River near Mahwah, N. J___ ___________________ 161Ramapo River at Pompton Lakes, N. J__________________ 163Greenwood Lake at The Glens, N. J_________________ 164Wanaque River at Greenwood Lake, N. J_____________ 165Wanaque River at Wanaque, N. J___ ______________'__ 167Pequannock River at Macopin intake dam, N. J_________ 168Saddle River at Lodi, N. J_______: ______________ 170

Elizabeth River Basin.___________________________ 172Elizabeth River at Elizabeth, N. J_________________ 172

Rahway River Basin______ ______________________________ 174Rahway River at Rahway, N. J______.._________________ 174

Raritan River Basin_______________________________ 175South Branch of Raritan River near High Bridge, N. J________ 175South Branch of Raritan River at Stanton, N. J_.____________ 177Raritan River at Manville, N. J__________________ 179North Branch of Raritan River near Far Hills, N. J_________ 181North Branch of Raritan River at Milltown, N. J_________ 182Black River near Pottersville, N. J____________________ 184Millstone River at Blackwells Mills, N. J______________ 186Green Brook at Boundbrook, N. J______________________ 187Lawrence Brook at Patricks Corner, N. J__________________ 189

Navesink River Basin_______________________________ 191Swimming River near Red Bank, N. J___________________ 191

Absecon Creek Basin___________________________________ 193Absecon Creek at Absecon, N. J_.__________________ 193

Great Egg River Basin________________________________ 195Great Egg River at Folsom, N. J________ _____ ____ 195

Delaware River Basin.._ _______________________ 197East Branch of Delaware River at Fishs Eddy, N. Y______ 197Delaware River at Port Jervis, N. Y___ ______________ 199Delaware River at Belvidere, N. J_________________.. 200Delaware River at Riegelsville, N. J_______________ 202Delaware River at Trenton, N. J__________________-_ 204Beaver Kill at Cooks Falls, N. Y__________________ 206Little Beaver Kill near Livingston Manor, N. Y______________ 208

VI CONTENTS

Gaging-station records Continued.L Delaware River Basin Continued. Page

West Branch of Delaware River at Hale Eddy, N. Y_______ 209Flat Brook near Flatbrookville, N. J..______-________ 211Paulins Kill at Blairstown, N. J_...____-____________ 212Pequest River at Pequest, N. J_____________________________ 214Beaver Brook near Belvidere, N. J_-__-___-__-________-_-___ 215Musconetcong River near Hackettstown, N. J____________ 217Musconetcong River near Bloomsbury, N. J________________ 219Assunpink Creek at Trenton, N. J_______--____-_____-_____- 221North Branch of Rancocas Creek at Pemberton, N. J_______ 223

Susquehanna River Basin____________~-_____----_---___________ 224Susquehanna River at Colliersville, N. Y___________________ 224Susquehanna River at Conklin, N. Y.__-_________-_--_______ 226Susquehanna River at Harrisburg, Pa_______________________ 228Unadilla River near New Berlin, N. Y___________________ 229Chenango River near Chenango Forks, N. Y_________________ 231Tioga River near Erwins, N. Y__________-_____________ 233Chemung River at Chemung, N. Y________________________ 234Canacadea Creek at Hornell, N. Y______-___-_-________ 236Cohocton River near Campbell, N. Y._____________________ 238Juniata River at Newport, Pa_______-___---------_--------- 240

Patuxent River Basin_________________________________________ 241Patuxent River near Burtonsville, Md-__-----------_-------- 241

Potomac River Basin___________________________________--_--_- 243North Branch of Potomac River at Bloomington, Md_________ 243Potomac River at Point of Rocks, Md_____-__-----__-------- 245Savage River at Bloomington, Md_-_-_-_-----------_------- 246Cacapon River near Great Cacapon, W. Va__________________ 248North River near Burketown, Va_________________-_-------- 250South Fork of Shenandoah River near Luray, Va_____________ 251Middle River near Grottoes, Va__________________________ 252South River at Harriston, Va.-__-_--------_---------------- 254North Fork of Shenandoah River at Cootes Store, Va _________ 255North Fork of Shenandoah River near Strasburg, Va __________ 257Monocacy River near Frederick, Md_________________ ____ 258Great Seneca Creek near Gaithersburg, Md________________ 260Northwest Branch of Anacostia River near Colesville, Md______ 261

Rappahannock River Basin__.__________________________________ 263Rappahannock River at Kellys Ford, Va__________-_-__--_-_- 263Rappahannock River near Fredericksburg, Va ________________ 264Rapidan River at Rapidan, Va_____--___-_____---__-------- 266

York^River Basin____________________________- 267North Anna River near Hewlett, Va_____---____--___-------- 267

Miscellaneous discharge measurements_____________________________ 269Index.....________________________________________.__._ 271

ILLUSTKATION

PageFIGURE 1. Typical gaging station_______-_-_--__-----_---_-----_--_- 3

SURFACE WATER SUPPLY OF NORTH ATLANTIC SLOPE DRAINAGE BASINS, 1926

AUTHORIZATION AND SCOPE OF WORK

This volume is one of a series of 14 reports presenting results of measurements of flow made on streams in the United States during the year ending September 30, 1926.

The data presented in these reports were collected by the United States Geological Survey under the following authority contained in the organic law (20 Stat. L., p. 394):

Provided, That this officer [the Director] shall have the direction of the Geolog ical Survey and the classification of public lands and examination of the geological structure, mineral resources, and products of the national domain.

The work was begun in 1888 in connection with, special studies relating to irrigation. Since the fiscal year ending June 30, 1895, successive appropriation bills passed by Congress have carried the following items:

For gaging the streams and determining the water supply of the United States and for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources.

Annual appropriations for the fiscal years ending June SO, 1895-1986

1895-.._.____________ $12, 500. 001896__--___-___-_._._ 24, 500. 001897-1899..____________ 50, 000. 001900__-_--_---_--___--_ 70, 000. 001901-2________________ 100, 000. 001903-1906._____________ 200, 000. 001907__.-------------_ 150, 000. 00

1911-1917.____________ $150, 000. 001918_____---_---_---._ 175,000. 001919_-._-___________ 148, 244. 101920___-__-____-___. 175, 000. 001921-1923._-_____----_ 180, 000. 001924-25___________ 170,000.001926._____--_____ 165,000. 00

1908-1910-_-------____- 100,000.00

In the execution of the work many private and State organiza tions have cooperated either by furnishing data or by assisting in collecting data. Acknowledgments for cooperation of the first kind are made in connection with the description of each station affected; cooperation of the second kind is acknowledged on pages 10 and 11.

Measurements of stream flow have been made at about 5,250 points in the United States and also at many points in Alaska and the Hawaiian Islands. In July, 1924, 1,730 gaging stations were being maintained by the Geological Survey and the cooperating organizations. Many miscellaneous discharge measurements were

1

2 SURFACE WATER SUPPLY, 1927, PART I

made at other points. In connection with this work data were also collected in regard to precipitation, evaporation, storage reservoirs, river profiles, and water power in many sections of the country and will be made available in water-supply papers from time to time.

DEFINITION OF TERMS

The volume of water flowing in & stream the "run-off" or "dis charge" is expressed in various terms, each of which has become associated with a certain class of work. These terms may be divided into two groups (1) those that represent a rate of flow, as second- feet, gallons per minute, miner's inches, and discharge in second-feet per square mile, and (2) those that represent the actual quantity of water, as run-off in inches, acre-feet, and millions of cubic feet. The principal terms used in this series of reports are second-feet, second- feet per square mile, run-off in inches, and acre-feet. They may be defined as follows:

"Second-feet" is an abbreviation for "cubic feet per second." A second-foot is the rate of discharge of water flowing in a channel of rectangular cross section 1 foot wide and 1 foot deep at an average velocity of 1 foot per second. It is generally used as a fundamental unit from which others are computed.

"Second-feet per square mile" is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assumption that the run-off is distributed uniformly both as regards time and area.

"Run-off in inches" is the depth to which an area would be cov ered if all the water flowing from it in a given period were uniformly distributed on the surface. It is used for comparing run-off with rainfall, which is usually expressed in depth in inches.

An "acre-foot," equivalent to 43,560 cubic feet, is the quantity required to cover an acre to the depth of 1 foot. The term is com monly used in connection with storage for irrigation.

The following terms not in common use are here defined:"Stage-discharge relation," an abbreviation for the term "relation

of gage height to discharge.""Control," a term used to designate the natural section or stretch

of the channel or artificial structure below the gage which determines the stage-discharge relation at the gage. It should be noted that the control may not be the same section or sections at all stages.

The "point of zero flow" for a gaging station is that point on the gage the gage height at which water ceases to flow over the control.

EXPLANATION OF DATA

The data presented in this report cover the year beginning Octo ber 1, 1925, and ending September 30, 1926. At the beginning "of

EXPLANATION OF DATA 6

January in most parts of the United States much of the precipita tion in the preceding three months is stored in the form of snow or ice, or in ponds, lakes, and swamps, or as ground water, and this stored water passes off in the streams during the spring break-up. At the end of September, on the other hand, the only stored water avail able for run-off is possibly a small quantity in the ground; therefore the run-off for the year beginning October 1 is practically all derived from precipitation within that year.

The base data collected at gaging stations consist of records of stage, measurements of discharge, and general information used to supplement the gage heights and discharge measurements in deter mining the daily flow. The records of stage are obtained either from

FIGURE 1. Typical gaging station

direct readings on a staff gage, chain gage, or from a water-stage recorder that gives a continuous record of the fluctuations. Meas urements of discharge are made with a current meter. The general methods are outlined in standard textbooks on the measurements of river discharge. A typical gaging station, equipped with water- stage recorder and measuring cable and car, is shown in Figure 1.

From the discharge measurements rating tables are prepared that give the discharge for any stage. The application of the daily gage height to these rating tables gives the daily discharge from which the monthly and yearly mean discharge is determined.

The data presented for each gaging station in the area covered by this report comprise a description of the station, a table giving results of discharge measurements, a table showing the daily discharge of the stream, and a table of monthly and yearly discharge and run-off.

4 StJEPACE WATEK SUPPLY, 1926, PART I

If the base data are insufficient to determine the daily discharge, tables giving daily gage height and results of discharge measure ments are published.

The description of the station gives, in addition to statements regarding location and equipment, information in regard to any con dition that may affect the permanence of the stage-discharge relation, covering such subjects as the occurrence of ice, the use of the stream for log driving, shifting of control, and the cause and effect of back water; it gives also information as to diversions that decrease the flow at the gage, artificial regulation, maximum and minimum re corded stages, and the accuracy of the records.

The table of daily discharge gives, in general, the discharge in second-feet corresponding to the mean of the gage heights read each day. At stations on streams subject to sudden or rapid diurnal fluctuation the discharge obtained from the rating table and the mean daily gage height may not be the true mean discharge for the day. If such stations are equipped with water-stage recorders the mean daily discharge may be obtained by averaging discharge at regular intervals during the day, or by using the discharge integrator, an instrument operating on the principle of the planimeter and con taining as an essential element the rating curve of the station.

In the table of monthly discharge the column headed "Maximum" gives the mean flow for the day when the mean gage height was highest. As the gage height is the mean for the day it does not indicate correctly the stage when the water surface was at crest height and the corresponding discharge was consequently larger than given in the maximum column. Likewise, in the column headed "Minimum" the quantity given is the mean flow for the day when the mean gage height was lowest. The column headed "Mean" is the average flow in cubic feet per second during the month. On this average flow computations recorded in the remaining columns, which are defined on page 2, are based.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

The accuracy of stream-flow data depends primarily (1) on the per manence of the stage-discharge relation and (2) on the accuracy of observation of stage, measurements of flow, and interpretation of records.

A paragraph in the description of the station gives information regarding the (1) permanence of the stage-discharge relation, (2) precision with which the discharge rating curve is defined, (3) refine ment of gage readings, (4) frequency of gage readings, and (5) methods of applying daily gage heights to the rating table to obtain the daily discharge.

PUBLICATIONS O

For the rating tables "well defined" indicates, in general, that the rating is probably accurate within 5 per cent; "fairly well defined," within 10 per cent; "poorly defined," within 15 to 25 per cent. These notes are very general and are based on the plotting of the individual measurements with reference to the mean rating curve.

The monthly means for any station may represent with high accu racy the quantity of water flowing past the gage, but the figures showing discharge per square mile and run-off in inches may be subject to gross errors caused by the inclusion of large noncon- tributing districts in the measured drainage area, by lack of infor mation concerning water diverted for irrigation or other use, or by inability to interpret the effect of artificial regulation of the flow of the river above the station. "Second-feet per square mile" and "run-off in inches" are therefore not computed if such errors appear probable. The computations are also omitted for stations on streams draining areas in which the annual rainfall is less than 20 inches. All figures representing "second-feet per square mile" and "run-off in inches" published by the Geological Survey in earlier reports' should be used with caution because of possible inherent but un known sources of error.

Many gaging stations on streams in the irrigated areas of the United States are located above most of the diversions from those streams, and the discharge recorded does not show the water supply available for further development, as prior appropriations below the stations must first be satisfied. To give an idea of the amount of prior appropriations, a paragraph on diversions is presented in each station description. The figures given can not be considered exact but represent the best information available.

The table of monthly discharge gives only a general idea of the flow at the station and should not be used for other than preliminary estimates; the tables of daily discharge allow more detailed studies of the variation in flow. It should be borne in mind, however, that the observations in each succeeding year may be expected to throw new light on data previously published.

PUBMICATIONS

Investigation of water resources by the United States Geological Survey has consisted in large part of measurements of the volume of flow of streams and studies of the conditions affecting that flow, but it has comprised also investigations of such closely allied subjects as irrigation, water storage, water powers, underground waters, and quality of waters. Most of the results of these investigations have been published in the series of water-supply papers, but some have appeared 4n the bulletins, professional papers, monographs, and annual reports.

6 StJRFACE WATER SUPPLY, 1926, PART I

The results of stream-flow measurements are now published annu ally in 12 parts, each part covering an area whose boundaries coincide with natural drainage features, as indicated below:Part I. North Atlantic slope basins.

II. South Atlantic slope and eastern Gulf of Mexico basins.III. Ohio River Basin.IV. St. Lawrence River Basin.V. Upper Mississippi River and Hudson Bay Basins.

VI. Missouri River Basin.VII. Lower Mississippi River Basin.

VIII. Western Gulf of Mexico basins.I.. Colorado River Basin.X. Great Basin.

XI. Pacific slope basins in California. XII. North Pacific slope basins in three volumes:

A. Pacific slope basins in Washington and upper Columbia RiverBasin.

B. Snake River Basin. C. Pacific slope basins in Oregon and lower Columbia River Basin.

Water-supply papers and other publications of the United States Geological Survey containing data in regard to the water resources of the United States may be obtained or consulted as indicated below:

1. Copies may be purchased at nominal cost from the Superintend ent of Documents, Government Printing Office, Washington, D. C., who will, on application, furnish lists giving prices.

2. Sets of the reports may be consulted in the libraries of the prin cipal cities in the United States.

3. Sets are available for consultation in the local offices of the water-resources branch of the Geological Survey, as follows:

Augusta, Me., Statehouse.Boston, Mass., 2500 Customhouse.Albany, N. Y., 904 Home Savings Bank Building.Hartford, Conn., 64 State Capitol.Trenton, N. J., 423 Statehouse Annex.Charlottesville, Va., Brooks Museum, University of Virginia.Asheville, N. C., 608 City Hall.Tuscaloosa, Ala., Post Office Building.Chattanooga, Tenn., 630 Power Building.South Charleston, W. Va., Naval Ordnance Plant.Columbus, Ohio, Engineering Experiment Station, Ohio State University.Chicago, 111., 1510 Consumers Building.Thief River Falls, Minn., 618 Knight Avenue North.Madison, Wis., 337 N. State Capitol.Rolla, Mo., Rolla Building, School of Mines and Metallurgy.Fort Smith, Ark., Post Office Building.Topeka, Kans., 23 Federal Building.Helena, Mont., 45-46 Federal Building.Denver, Colo., 403 Post Office Building.Salt Lake City, Utah, 313 Federal Building.Idaho Falls, Idaho, 228 Federal Building.

PUBLICATIONS

Boise, Idaho, Federal Building.Tacoma, Wash., 404 Federal Building.Portland, Oreg., 606 Post Office Building.San Francisco, Calif., 303 Customhouse..Los Angeles, Calif., 600 Federal Building.Tucson, Ariz., 104 Agricultural Building, University of Arizona.Austin, Tex., State Capitol.Honolulu, Hawaii, Territorial Office Building.

A list of the Geological Survey's publications may be obtained by applying to the Director, United States Geological Survey, Washing ton, D. C.

Stream-flow records have been obtained at about 5,250 points in the United States, and the data obtained have been published in the reports tabulated below:

Stream-flow data in reports of the United States Geological Survey

fA=Annual Report; B=Bulletin; W=Water-Supply Paper]

Report

10th A, pt. 3 __ ...llth A, pt. 2 __ ...12th A, pt. 2 ___ .13th A, pt. 3 -14th A, pt. 2... __ .B 131. 16th A, pt. 2 ___ ..B 140...

Wll ... ... ......18th A, pt. 4.... .

W15. ..... ... .

W 16

19th A, pt. 4 .

W27 ..... ......

W28 .... .....

20th A, pt. 4 ___ .W 35 to 39 ___ ....21st A, pt. 4 ........W 47 to 52 __ ......22d A, pt. 4 _ .....W 65, 66 _ ..W 75..... ....W 82 to 85..... __ .W 97 to 100.... .W 124 to 135 .W 165 to 178. __ W 201 to 214. __ ...W 241 to 252 ..W 261 to 272........W 281 to 292....... .W 301 to 312... _ ..W321 to 332 ___ .W 351 to 362.. __ .W 381 to 394........W 401 to 414........W 431 to 444........W 451 to 464........W 471 to 484 W 501 to 514 W 521 to 534........W 541 to 554 W 561 to 574 W 581 to 594.. __ .W 601 to 614 ........W 621 to 634........

Character of data

__ do ____________________________ . ...

ly discharge (also many data covering earlier years).

(also similar data for some earlier years).

States, eastern Mississippi River, and Missouri River above junction with Kansas.

sissippi River below junction of Missouri and Platte, and western United States.

(also some long-time records) .

States, eastern Mississippi River, and Missouri River.

and western United States.

__ do. _____________________ . ____ ...... do..... ... ... ..... ...... ........ ... ... ... ... ...... ... do..... . .-do-... .. . ______ . _ .... __ .. _ .... ......... do... ............. . ..-.-.do _ . . ___ .. __ ...... do... ... ........ ............................. ........

do....... _ ..... _ ....... _______ ..... __ . do. . ... -do... ... ... ... ... ... ..... ..... ... ..... ..... ... ...... .do......... ....... . ....................... do...

do ..... . do.... ... ... ... .... ... .......... do...... _ . ..... __ . __ .........

do ........ do . do....... . . ...--. .. do.. . ......... . . ................ .do ..... ...... .... ... .... ... .do. ...................... . ...

Year

1884 to Sept., 1890.1884 to June 30, 1891.1884 to Dec. 31, 1892.1888 to Dec. 31, 1893,

1895.

1896.1895 and 1896.

1897.

1897.

1897.

1898.

1898.

1898.1899.1899.1900.1900.ioni1901.1902 >1903.1904.1905.1906.1907-8.1909.1910.1911.1912.1913.1914.1915.1916.1917.1918.1919 and 19201921.1922.1923.1924.1925.1926.

NOTE. No stream flow data are given in the Fifteenth and Sixteenth Annual Reports.


The records at most of the stations discussed in these reports extend over a series of years and miscellaneous measurements at many points other than regular gaging stations have been made each year. An index of the reports containing records obtained prior to 1904 has been published in Water-Supply Paper 119.

The following table gives, by years and drainage basins, the num bers of the papers on surface-water supply published from 1899 to 1924. The data for any particular station will be found in the reports covering the years during which the station was maintained. For example, data from 1902 to 1922 for any station in the area -covered by Part III are published in Water-Supply Papers 83, 98, 128, 169, 205, 243, 263, 283, 303, 323, 353, 383, 403, 433, 453, 473, 503, 523, and 543, which contain records for the Ohio River Basin for those years.

Num

bers

of

wat

er-s

uppl

y pa

pers

con

tain

ing

resu

lts o

f st

ream

mea

sure

men

ts,

1899

-192

6[F

or b

asin

s in

clud

ed s

ee p

. 6]

1 63T

1899 «..

._..

.1900 o

. ......

1901

.........

1902

.........

1903

.........

1904

1905..

1906

1907-8

1909.. ..

.. ..

.1910

1911

1912

1913

1914

1915

1916

1917

1918

1919-20. ..

...

1921

__ .

1922- ___ -

1923 ..

..19

24

__ .

1925

.

1926

I

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, »4

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4,« 12

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126

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6i>167

.» 20

1, 202

»203

241

261

281

301

321

251

381

401

431

451

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501

521

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581

601

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262

282

302

322

352

3S2

402

432

452

472

502

522

542

S62

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602

622

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65,7

5 83 98 128 Mm 169

205

243

263

283

303

323

353

383

403

433

453

473

503

523

543

563

583

603

623

IV

36 4065

,75

1 82, 83 97 129

170

206

244

264

284

304

324

354

384

404

434

454

474

604

524

544

564

584

604

624

V

36 49* 6

5, 66, 75

"83,85

* 98, 99

, "1

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8, 130 171

207

245

265

285

305

325

355

385

405

435

455

475

505

525

545

565

585

605

625

VI

«36,37

49,<50

66,75 84 99

130, «

131 172

208

245

266

286

306

326

356

386

406

436

456

476

506

526

546

566

586

606

626

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37 50< 65, 66, 75

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*98,99

* 12

8, 131

* 16

9, 173

* 205, 209 247

267

287

307

327

357

387

407

437

457

477

507

527

547

567

587

607

627

VIII

37 5066,75 84 99 132

174

210

248

268

288

308

328

358

388

408

438

458

478

508

528

548

568

588

608

628

J..A

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38 5066,75 85 100

133

175,

177

211

249

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289

309

329

359

389

409

439

459

479

509

529

549

569

589

609

629

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134

176, '177

212,

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250, '25

127

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1290

310

330

360

390

410

440

460

480

510

530

550

570

590

610

630

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134

177

213

251f

271

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1131

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1361

391

411

441

461

481

511

531

551

571

591

611

631

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38 5166,75 85 100

135

178

214

252

272

292

312

332-

A362-A

392

412

442

462

482

512

532

552

572

592

612

632

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135

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393

413

443

463

483

513

533

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573

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613

633

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394

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484

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COOPERATION

Records in Maine were obtained in cooperation with the Public Utilities Commission of Maine, Charles E. Gurney, chairman.

The work in New Hampshire was done in cooperation with the Public Service Commission of New Hampshire, William T. Gunnison, Fred H. Brown, and John W. Storrs, commissioners.

In Massachusetts the work was carried on in cooperation with the Department of Public Works, division of waterways and public lands, William F. Williams, chairman, Richard K. Hale, commissioner, (waterways).

Work in New York was carried on in cooperation with the State and at certain stations in cooperation with the following organizations: Hudson River Regulating District (Hudson River near Newcomb, N. Y., Hudson River at North Creek, N. Y., and Schroon River at Riverbank, N. Y.); Indian River Co. (Indian Lake Reservoir, Indian River near Indian Lake, N. Y., Hudson River at Hadley, N. Y., and Sacandaga River at Hadley, N. Y.); Adirondack Power & Light Corporation (Hoosic River near Eagle Bridge, N. Y., Hudson River at Hadley, N. Y., and Fox Creek at West Berne, N. Y.); West Vir ginia Pulp & Paper Co. (Hudson River at Mechanicville, N. Y.); Cohoes Power & Light Corporation (Mohawk River at Cohoes, N. Y.); Mr. I. C. Blandy (Batten Kill at Battenville, N. Y.); Rensselaer Poly technic Institute (Poesten Kill near Troy, N. Y.); Utica Gas & Electric Co. (West Canada Creek at Kast Bridge, N. Y.); United Hudson Electric Corporation (Wallkill River at Pellets Island Mountain, N. Y., Wallkill River at Gardiner, N. Y., and Shawangunk Kill at Pine Bush, N. Y.); New York State Gas & Electric Corporation (Susquehanna River at Colliersville, N. Y., and Unadilla River near New Berlin, N. Y.).

The work in New Jersey was carried on in cooperation with the State Department of Conservation and Development, Dr. Henry B. Kummel, director, and H. T. Critchlow, chief, division of waters.

The work in Maryland was carried on in cooperation with the Mary land Geological Survey, Washington Suburban Sanitary District, and West Virginia Pulp & Paper Co.

The work in Virginia was carried on in cooperation with the Vir ginia Geological Survey, the cooperating oificial being Wilbur A. Nel son, director.

Financial assistance in New Ipn gland has been rendered by the Orono Pulp & Paper Co., Milo Elecric Light Co., St. Croix Paper Co., Thomas W. Clark, Kennebec Water Power Co., Penobscot Power Co., Great Northern Paper Co., New England Power Co., Turners Falls Power & Electric Co., Connecticut Valley Lumber Co., Holyoke Water Power Co., International Paper Co., Eastern Connecticut

DIVISION OP WORK 11

Power Co., Keene Gas & Electric Co., Profile Falls Power Co., Con necticut Power Co., Mascoma Kiver Improvement Co., Worcester Electric Light Co., W. H. McElwain Co., Upper Connecticut Kiver & Lake Improvement Co., Proprietors of the Locks and Canals on Menimack Kiver, Essex Co., Amoskeag Manufacturing Co., Man chester Traction Light & Power Co., Parker-Young Co.

Financial assistance was rendered in New Jersey by the Hackensack Water Co., Weehawken; city of Morristowa, department of public works, William H. Frapwell, commissioner; borough of Pompton Lakes; Taylor Wharton Iron & Steel Co., High Bridge; Somerset Lake & Game Club, Far Hills (Col. F. S. Tainter, engineer); Tinterh Manor Water Co., Long Branch; Atlantic City Water Department (L. Van Gilder, engineer and superintendent); and the Warren Man ufacturing Co., Milford.

Financial assistance was rendered in West Virginia by the Potomac Edison Co.

Financial assistance was rendered in Virginia by the Virginia Elec tric & Power Co.

DIVISION OP WORK

The data for stations in New England were collected and prepared for publication under the direction of H. B. Kinnison, district engineer. M. K. Stackpole, assistant engineer, had immediate supervision of the work in Maine. The other assistants in New England were Lillian H. Finnerty and Henry F. Hill, jr.

Data for stations in New York were collected and prepared for publication under the direction of Arthur W. Harrington, district engineer, assisted by J. L. Lamson, B. L. Bigwood, A. E. Johnson, W. B. Mifflin, K. K. Hoyt, F. H. Harrington, and Agnes D. Buchanan.

Data for stations in New Jersey were collected and prepared for publication under the direction of O. W. Hartwell, district engineer, assisted by Otto Lauterhahn, H.'C. Barksdale, E. W. Downs, and Miss M. G. Tracy.

Data for stations in Maryland and West Virginia were collected and prepared'for publication under direction of A. H. Horton, district engineer, assisted by D. S. Wallace, J. W. Mangan, and P. R. Speer.

Data for stations in Virginia were collected and prepared for pub lication under the direction of J. J. Dirzulaitis, district engineer, assisted by O. D. Mussey, F. C. Christopherson, J. H. Hofmann, Miss Nellie Minor, and Miss S. F. Norris.

The manuscript was assembled and reviewed by J. W. Mangan.63435 30 2


GAGING-STATION RECORDS

ST. JOHN RIVER BASIN

ST. JOHN RIVER AT TAN BUBEH, ME.

LOCATION. At international bridge at Van Buren, Aroostook County, 14 miles above Grand Falls.

DEAINAGE AREA. 8,270 square miles.RECORDS AVAILABLE. May 4, 1908, to September 30, 1926.GAGE. Gage painted vertically on second pier from Van Buren end of bridge;

read by W. H. Scott.DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Control practically permanent. Banks high, rocky,

cleared, and not subject to overflow except at very high stages.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 22.7 feet at

7.35 a. m. May 19 (discharge, 92,000 second-feet); minimum discharge, 1,500 second-feet March 20-23 (stage-discharge relation affected by ice).

1908-1926: Maximum stage recorded, 29.0 feet May 2, 1923 (discharge, by extension of rating curve, 134,000 second-feet); minimum discharge estimated at 720 second-feet March 18, 1923 (stage-discharge relation affected by ice).

ICE. Stage-discharge relation seriously affected by ice.REGULATION. The little storage that is used for log driving probably does not

materially affect flow.ACCURACY. Stage-discharge relation practically permanent except when affected

by ice. Rating curve well defined. Gage read to tenths once daily, occa sionally twice daily. Daily discharge ascertained by applying daily gage height to rating table with corrections for effect of ice during winter. Records good.

The following discharge measurement was made:February 18, 1926: Gage height, 3.50 feet; discharge, 2,270 second-feet (stage-

discharge relation affected by ice).

Daily discharge, in second-feet, of St. John River at Van Buren, Me., for the year ending September SO, 1926

Day

1 __ ..........2. __ . _ .....3 ......_.. 4...............5 __ . __ .....

6. _ ...........7 ...............8 __ ....-...-.9-....... ....

10 __ ...........

11 ______ ....12...............13 __ ...........14 __ ..........15 ............

16. _______ ..17.... ........18 _ ... _ ......19...............20...............

Oct.

11,90010,6009,5008,7208,980

16,90023,30020,50017,60016,000

15,70015,40014,50013,60013,600

14,50016,60024,00031,90033,200

Nov.

13,60013,00012,80012,20011,600

10,80010,80011,40014,50018,200

23,60023,30021,50022,20025,900

34,10053,50060,20053, 50046.000

Dec.

16,00015,00014,50014,50014,000

14J50016,00016,60014,00010,000

6,6008,600

11,00012,00012,000

12,00010 fYlfl

11,000

9.600

Jan.

6,0006,0005,8005,6005,600

5,4005,4004,9004,5004 400

4,4004,3004,3004,2004,200

4,0004,0003,9003,8003.800

Feb.

3,1003,1003,0002,9002,800

2,7002,7002,6002,500

,2,500

2,4002,3002,3002,2002,200

2,1002 9TW19 3ftfi2,2002.100

Mar.

1,7001,7001,8001,8001,800

1,7001,700i fion1,7001,700

1,6001,7001,7001,7001,600

1,6001,6001,6001,5501.500

Apr.

1,6001,6001,7001,7001,700

1,7001,7001,7001,7001,700

1,7001,7001,7001,7001,700

1,7501,8001,8001,8001.800

May

12,50017,00021,00024,00082,300

75,00079,20079,80079,80081,000

78,00072,00070,20068,40072,000

75,000

90,800no rmn90.100

June

45,00042,50040,10040,60040,100

35,40031,50031,50034,10036,800

35,90032,30028,60026,20023,600

21,80020,50018,80016,90016.300

July

11,40010,60010,0009,2408,720

7,9707,2607,0307,0307,030

6,5907,030

10,60013,60012,200

10,0007,7307,030

6.160

Aug.

3,9403,5803,4103,4103,240

2,7602,4402,4403,0703,580

3,4103,0702,9102,9102,750

2,2902,4402,2902,1502.290

Sept.

3,9404,3204,1303,9403,580

3,2403,5803,7603,7603,940

5,5306,1605,9508,220

10,000

8,9808,2207,4997,4907.400

ST. CEOIX RIVER BASIN 13

Daily discharge, in second-feet, of St. John River at Van Buren, Me., for the year ending September SO, 1926 Continued

Day

21 _ . _ ........22 _ ............23. 24 _______ ..25

26. _ ....... ....27...............28..... .......29 __ ...........30....... ........31... ........

Oct.

31,50027,80025,10022,60020,500

19,80018,50017,60016,60016,30015,400

Nov.

40, 10035,00031,10029,40027,400

25,00022,00019,00018,00017,000

Dec.

9,2009,0008,0008,0007,800

7,8007,6007,4007,0006,4006,200

Jan.

3,7003,7003,7003,5003,500

3,5003,5003,5003,5003,5003,300

Feb.

2,1002,0002,0001,9001,900

1,8501,8001,800

Mar.

1,5001,5001,5001,5501,600

1,7001,7001,7001,7001,6001,600

Apr.

1,8501,9002,0002,3003,200

3,8005,4005,8006,8009,200

May

84,90081,00075,00069, 00075,000

80,40075,00066,60057,50052,50048,000

June

15,70015,10014,50013,60013,000

12,50011,90011,60010,60011,100

July

5,7405,5305,5305,5305,740

7,7306,8105,9505,5304,9204,520

Aug.

2,4402,1502,1502,0101,880

2,0101,8801,8802,4402,5902,910

Sept.

7,0306,8106,3705,7405,740

5,9506,8108,2208,2208,980

NOTE. Stage-discharge relation affected by ice Nov. 26 to Dec. 5 and Dec. 9 to May 4; discharge for these periods determined from gage heights corrected for effect of ice by means of one discharge measure ment and records at Grand Falls.

Monthly discharge of St. John River at Van Buren, Me., for the year ending September30, 1986

[Drainage area, 8,270 square miles]

Month

April _________ . __ ..... ..............

July .... . . ...

September... ___ .. . __________ . ....

Discharge in second-feet

Maximum

33,200 60,200 16,600 6,000 3,100 1,800 9,200

92,000 45,000 13,600 3,940

10,00092,000

Minimum

8,720 10,800 6,200 3,300 1,800 1,500 1,600

12,500 10,600 4,520 1,880 3,2401,500

Mean

18,300 25,200 10,800 4,300 2,340 1,650 2,550

68,100 24,900 7,650 2,670 6,120

14,700

Persquare mile

2.21 3.05 1.31 .520 .283 .200 .308

8.23 3.01 .925 .323 .740

1.78

Kun-ofl in inches

2.55 3.40 1.51 .60 .29 .23 .34

9.49 3.36 1.07 .37 .83

24.04

ST. CROIX RIVER BASIN

ST. CEOIX RIVER HEAR BAIIEYVH1E, ME.

LOCATION. A short distance below power house of St. Croix Paper Co., at Grand Falls, Baileyville Township, 3>6 miles east of Baileyville station of Maine Central Railroad, Washington County.

DRAINAGE ABEA. 1,320 square miles.RECORDS AVAILABLE. November 25, 1919, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by employee of St.

Croix Paper Co.DISCHARGE MEASUREMENTS. Made from cable.CHANNEL AND CONTROL. Bed covered with gravel and boulders. Control for

low and medium stages formed by series of riffles near gage; control for high stages not clearly defined.

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 7.20 feet at 8 p. m. May 2 (discharge, 10,100 second-feet); mini mum stage, 1.28 feet at noon October 4 (discharge, 470 second-feet).

1919-1926: Maximum stage recorded, 13.90 feet May 1, 1923 (discharge, by extension of rating curve, 23,300 second-feet); minimum discharge, estimated at 100 second-feet December 9, 1923, July 20 and 27, 1924 (water held back by dam).


ICE. River remains open throughout winter; stage-discharge relation occa sionally affected by ice or by logs.

REGULATION. About 30 billion cubic feet of storage has been developedfin lakes and pounds above station. Variations in use of water at power plant a short distance above gage cause fluctuations in stage.

ACCTJKACY. Stage-discharge relation shifts occasionally. Rating curves used fairly well defined between 500 and 10,000 second-feet. Operation ̂ of water-stage recorder satisfactory except for short periods as indicatedjin footnote to daily-discharge table. Daily discharge ascertained by apply ing to rating table mean daily gage height as determined by inspection of recorder graph, except for days of considerable fluctuation when the average of 2-hour intervals were used. Records good.

Discharge measurements of St. Croix River near Baileyville, Me., during the year ending September SO, 1926

Date

May 10 ____

Gage height

Feet 5.541.80

Dis charge

Sec.-ft. 6,9901,120

Date Gage height

Feet «3.19

2.13

Dis charge

Sec.-ft. 1,6801,440

Date

Aug. 28

Gage height

Feet 2.16

Dis charge

Sec.-ft. 1,560

" Stage-discharge relation affected by logs.

Daily discharge, in second-feet, of St. Croix River near Baileyville, Me., for the year ending September SO, 1926

Day

1 _ ............2.... ....... ....3 -----^... ............5... ............

6 - 7-. _ --. .8 9 10

11 12 13 14..-- ..15

16 17 18 19 20

21 22 23 24 25

26 27 2829 30. 31

Oct.

1,5801 6001,260

9541,410

1,5301,4901,5501,6602,580

5,900

6,1805,1204,780

4,4604,6204 4604,1403,740

3,280

9 S29fi

3,0502 O1ft

3,9003,5803,2004,4603,8203,280

Nov.

2,8002,9003,0502,8202,520

2,0102,0101,6101,9402,380

2,820

a QQA

3,700

4,4604,460

3,1003,100

3,0502,7602 QAft

5,4107,080

6,7205,4605,2903,7709 Qftft

Dec.

3,0503,0503,0502,9903,050

2 77ft

3 10ft

3,580S Oflft

O AAf\

2,6802,2202,4502,680

2,7502 68fr2 QOn

2 6001,560

9 ^ftft

2,5202,450

940

1,730i G7A

2,2202,4502,2202,220

Jan.

2,0802,0801,7201,9302 QAA

2,1502,2202 1 ttf\

ft tArt

1,500

2 inn

2 90ft

2,1502,1502 99ft

2 OAA

1,6102,0302,3002 KOA

2 COA

2,5202,6001,7002 0Aft

2 7Hft

2 7cn

2 7509 Qftft

1,940

Feb.

2,4002,7502,7502,6802,600

9 fiftft

9 flftft9 fiftft9 PUTO

O FCAft

9 f^ftft

2 4001,'5402 CAn

2 6009 finn2,520o qoft

2 COA

1 940

9 fyift9 Vtfl

9 *9rt

2,500

Mar.

2,4509 fif\f\

2,6002,600

1,6702,2209 fifin2,750

2 /jQA

2,4009 fiftft

1,7409 finft

9 onft9 QftO

2 Qf\f\

2,7002,500

1,4702 0on

9 £Qft9 finft

2,520

2 ftOf\

1,6602,5202 qon

2,820

Apr.

2,900

2,9801,8402,600

2 Q9fk

2 Qftft

2,6802 J20A

2,0709 A^n2 7cn9 Q9ft

2 7cn

2 7Rft

9 T^ft

1,8002,4502 GOA

2 QQft

S ftAft

S rtCft

2 9802 Qfift

9 ion

9 7009,1308 940'

May

9,3209,3209,7009,7009,700

8 <Ldft7 Rdft7 0806,2206,720

6,0004,9504,3004,3004,300

3,0402 Qqn

2,7509 fi9ft

2 O*)A

2 Qftft

3 ncn

2 ion

d. ftfift

4 780

5,6405,8204 Qftft

4 450o eofl

3,660

June

3,0502,9002,9002,8202,820

1,6002,8002 ARf\

2,3802 450

2,5200 1 Rf\

1,0401 fid/1

1,940

1 6601,5501,7702 no/1

1,360

1,6302,0101 Qdft

1,8702 *>Oft

2,6801,6309 Qfift

2,5209 Qftft

July

2,750

2,3801,3101,270

1,5101,5801,5801,5802,010

1,070i qert

1,7001,8701,720

1 Af)f\

I KKfl

1,0301,8501,600

1,5001,1000 Qftft

2,4001,050

2 1009 flflA2 6002^7002 Ann1,500

Aug.

1,0501, 5501,5001,7501,600

1 6001,6501,050i dnt\1,400

1,400

i 4^n1 000

1 QAA

1,2001,4001 7QA

i ^on

1 Afif\

Q34i Ofjft

1,3201 44rt

1,4501,5501 KKf\

9771 9QA

1,460

SepU

1,5101,5101,4501,5101,200

1 0401,2101,4201,5501,550

1,560I' QQ1

1,3401 4801^480

1,5101,5101,630I AOn1,350

1,5501 Kflf\

1,5501,600i *oft

1 0001 *>cft1,4801,5101,520

NOTE. Daily discharge, Nov. 1,18-20, Jan. 8-12, 24-27, Feb. 5, 6, 9-13,15,16, 21-24, 27, Mar. 3-6,12,13, 15-17, 19, 20, June 6 and 7 estimated by comparison with records from power station just above. Stage- discharge relation affected by logs July 16 to Aug. 18.

PENOBSCOT RIVER BASIN 15

Monthly^discharge of St. Croix River near Baileyville, Me., for the year endingSeptember SO, 1926


Month

November .....................................

February ____________________

May...........................................June _______________ . .............July............................... ...........August _______________________September ____________________

The year ................................


Maximum

6,900 7,080 3,580 2,900 2,750 2,900 9,700 9,700 3,050 2,750 1,750 1,630

9,700

Minimum

954 1,610

940 1,500 1,490 1,470 1,800 2,180 1,040 1,030

934 991

934

Mean

3,310 3,480 2,550 2,230 2,420 2,490 3,710 5,390 2,200 1,790 1,400 1,420

2,700

Persquare mile

2.51 2.64 1.93 1.69 1.83 1.89 2.81 4.08 1.67 1.36 1.06 1.08

2.05

Run-off in inches

2.89 2.94 2.22 1.95 1.91 2.18 3.14 4.70 1.86 1.57 1.22 1.20

27.78

NOTE. The monthly discharge in second-feet per square mile and run-off in inches do not represent the natural flow from basin because of artificial storage. (See "Regulation.")

PENOBSCOT RIVER BASIN

WEST BRANCH OF PENOBSCOT EIVER AT MILIINOCKET, ME.

LOCATION. At Quakish Lake Dam and Millinocket mill of Great Northern Paper Co., Millinocket, Penobscot County.

DRAINAGE AREA. 1,910 square miles.RECORDS AVAILABLE. January 11, 1901, to September 30, 1926.GAGES. Water-stage recorder at Quakish Lake Dam and gages in fore bay and

tailrace of mill.CHANNEL AND CONTROL. Crest of concrete dam.DISCHARGE. Flow computed by considering the flow over the dam, the flow

through the wheels, and the water used through the log sluices and filters. The wheels were rated at Holyoke, Mass., before being placed in position and were tested later by numerous tube-float and current-meter measurements. Ratings for four new wheels installed in 1917 are based on acceptance test on one unit after installation; discharge at various gate openings being measured by the use of Pitot tubes. When the flow of the river is less than 3,500 second-feet, all the water generally flows through the wheels of the mill.

ICE. Determination of discharge not seriously affected by ice; Ferguson Pond, just above entrance to canal, eliminates effect from anchor ice.

REGULATION. Except for a short time during the high-water period, run-off is regulated by storage in North Twin and Ripogenus Lakes, the combined capacity of which is about 45 billion cubic feet. Records corrected for storage.

COOPERATION. Records furnished by engineers of Great Northern Paper Co.


Monthly discharge of West Branch of Penobscot River at Millinocket, Me., for the year ending September SO, 1926


Month

October ___________________________November _________________________December. _________________________January __________________________February _________________________March ____________________________April _____________________________May. _ . _________________________June ____________________________July.... ...._-_._.. .._.-_._..__._.__..._.__...._._.._..August ___________________________

The year. __ .... __________________


Observed

2,710 3,280 3,620 2,890 2,580 2,630 2,620 5,690 3,550 2,800 2,830 2,850

3,180

Corrected for storage

Mean

5,720 6,100 3,320 1,260

975 270

1,580 12,600 3,480 2,170 1,500 1,070

3,360

Per square mile

2.99 3.19 1.74 .660 .510 .141 .827

6.60 1.82 1.14 .785 .560

1.76

Corrected run-off

in inches

3.4& 3.5& 2.01

.76-

.6&

.16

.92 7.61 2. OS 1.31 .90 .62

23.8ft

WEST BRANCH OF PENOBSCOT EIVEE NEAB MEDWAY, ME.

LOCATION. Just above Nichatou Rapids, half a mile above mouth of East Branch of Penobscot River and village of Medway, Penobscot County, and 2 miles below East Millinocket.

DRAINAGE AREA. 2,120 square miles.RECORDS AVAILABLE. February 20, 1916, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by George M. Dow.DISCHARGE MEASUREMENTS. Made from cable.CHANNEL AND CONTROL. Bed fairly smooth at measuring section; covered with

rocks and boulders above and below gage. Channel divides a few hundred feet below gage, but practically entire flow passes to left of Nichatou Island. Control formed by Nichatou Island and head of Nichatou Rapids; somewhat shifting.

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 7.46 feet at 9 p. m. May 23 (discharge, 14,900 second-feet); mini mum stage, 1.20 feet 8 a. m. September 19 (discharge, by extension of rating curve, 525 second-feet).

1916-1926: Maximum stage recorded, 9.88 feet June 18, 1917 (discharge by extension of rating curve, 20,000 second-feet); minimum discharge esti mated at 100 second-feet at various times during 1923 and 1924, when water was held back by dams.

ICE. Ice forms along both banks, but main channel remains open; stage-discharge relation not seriously affected.

REGULATION. Flow at ordinary stages completely regulated by dams and storage 'reservoirs above station.

ACCURACY. Stage-discharge relation probably shifted slightly at times of high water. Rating curve well defined between 1,000 and 8,000 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graph except for days of large fluctuations .in stage when the mean of 2-hour intervals was used. Records good.


Discharge measurements of West Branch of Penobscot River near Medway, Me.t during the year ending September SO, 1926

Date

Oct. 13 .........Oct. 21... ......

Gage height

Feet 4.524.07

Dis charge

Sec.-ft. 4,2603,300

Date' Gage height

Feet 5.424.15

Dis charge

Sec.-ft. 6,6903,340

Date

Gage height

Feet 3.99

Dis charge

Sec.-ft. 3,080

Daily discharge, in second-feet, of West Branch of Penobscot River near Medway, Me., for the year ending September SO, 1926

, Day

1 _ . _____ .2 ...............3 . 4 _______ -5 ... ..... ... .6 ...............7. ..............8 . .....9 10-........ ...11 ________12 ...............13.... .......14 15 16 ____ . ......17 ____ . ___ .18...............19 20 __ ..... .....21.. .............2223... _ ... ......24 ______ . ...25 ...........26 ___ . ........27 ..28 .29 ..............30 ..............31

Oct.

3,0602,6502,8902,6403,2403,7603,5403,0603,2403,8704,2504,4804,1004,1003,7603,7603 9803,2003,4003,2403,3403,3003,3003,3003,3004,4005,4004 9fio3,0002,8102,890

Nov.

2,6802,8902,8903,1503,4403,3403,3403,2303,2403,9804 ^40

3,870S QSfi

4,1003,6504,3406 9406,1605,2704,8604,5903,2603,7105,8606,4607,1007,1005,270

3,650

Dec.

3,8704,4604,3404,3404,3404,8606,6207,1006,7807,1007,6107,1004 8405^1304,8604,5904,4604,4603,9803,3403,8704,4604,4604,7209 070

3,7603,6403 SJ7A

4,100A. QQO4,860

Jan.

4,7203,9803,4203,5404,1004 ^404,2104,2104,2103 OCf|

3,3403,8704,2104,1003 osn3,8703,0403,6504,1004,1004,1004,1004,3403,3003,8704,1003,7603,5403,8704,2102,590

Feb.

2,9703,1503,4403 440

3,5403 4402^6403 440

3,5403 KA(\

3,5403,4403 0ift

2,660s 9,403,4403,4403 4403^3403 4402,5603,1503,4403 44ft

3,4403,4403,1502,520

Mar.

3,1503,5403,4403 440

3 4403,2402,5703,2403,5403,7603,7603,5403 AAf\

9 7ftft

3,1503 4403,3403 940

3 2403' 240

'2,5203,0603,2403,2403,1503,1503,0602 QQA

2,9703 2403* 240'

Apr.

3,3403,2403,0602,410O Afift

3,3403,240q net)

3 240

3 4402,5803,3403 4403, 3403 440

3,1509 Q70

2,440O Girt

3,1503,1503,2403,3403 *Mfl

9 QSfi

3,5403,7604 3404* 9904,720

May

4,5904,3505,1305,5605,4205,1304,3404,3404,0004 ^40

3 QQA

3,4403,6504,0503 ft Efl

9 onn3,5403,7603,4003,0503,5004,2509,620

iq ftnfl13,20013,20013,20019 ftftft

10,800Q 94fl

7,610

June

4,3402,8503,0503 ACA

8,3205,200<> fifiO

4,1503 QCfl

4,3404,210O ftCA

3,5504,3404,100q j>7ft

3,6503 OCA

3,5404,0005,8605,2704,9903 QSO

3 2403,2409 Q^fl3 98043403,650

July

3,3403,7003,4002,9002,8103,3003,1503,2403,4503,1502,3503,1503,5403,2403,3403,1003,7602,7003,3403,3403,3403,3403,4403,5402,8003,4403,4403,0603,2403,2403,340

Aug.

2,7503,2402,9702,9703,0602,9703,0603,0004,4603,8703,7603,3403,1503,1502,2303,0603,1503,4402,7503,0603,2402,6402,8103,0603,6503,1502,9703,1502,4202,9703,240

Sept.

3,1503,3402,9703,2402,7902,2802,9802,9702,9703,1502,8902,5702,9902,8103,2403,0903,5403,3402,6402,9703,0603,0603,5403,1503,0602,4702,8303,0603,1503,060

NOTE. Discharge estimated Nov. 18, 19, and 22-29, by comparison with records from power station just above.

Monthly discharge of West Branch of Penobscot River near Medway, Me., for the year ending September SO, 1926[Drainage area, 2,120 square miles]

Month

November ___________

April. .

July. ... ... ......... .....

September _ . .


Observed

Maximum

5,400 7,100 7,610 4,720 3,540 3,760 4,990

13,600 8,320 3,760 4,460 3,540

13,600

Minimum

2,640 2,680 2,970 2,590 2,520 2,390 2,410 2,900 2,850 2,350 2,230 2,2802,230

Mean

3,530 4,370 4,830 3,870 3,270 3,220 3,320 6,250 4,170 3,240 3,120 3,0103,860


Mean

6,540 7,190 4,530 2,240 1,660

860 2,280

13,100 4,110 2,610 1,790 1,2304,030

Per square mile

3.09 3.39 2.14 1.06 .783 .406

1.08 6.18 1.94 1.23 .844 .580

1.90

Corrected run-off in

inches

3.56 3.78 2.47 1.22 .82 .47

1.20 7.12 2.16 1.42 .97 .65

25.84

18 SUEFACE WATER SUPPLY, 1926, PAET I

PEHTOBSCOT BIVER AT WEST EHTEIE1D, ME.

LOCATION. At steel highway bridge, 1,000 feet below mouth of Piscataquis River and 3 miles west of Enfield railroad station, Penobscot County.

DRAINAGE AREA. 6,600 square miles.RECORDS AVAILABLE. November 5, 1901, to September 30, 1926.GAGE. Water-stage recorder on left bank, downstream side of left abutment,

used since December 11, 1912; inspected by Hai*vey Thompson.DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Channel at gage broken by four bridge piers; straight

above and below gage. Banks high and rocky and not subject to overflow. Control is at Passadumkeag Rips, 5 miles below gage.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re corder, 15.15 feet at 6 a. m. May 5 (discharge, 67,500 second-feet); minimum stage, 2.10 feet at 6 a. m. August 16 (discharge, 3,790 second-feet).

1902-1926: Maximum stage recorded, 25.15 feet May 1, 1923 (discharge by extension of rating curve, 153,000 second-feet); minimum stage, 1.0 foot October 29, 1905 (discharge, 1,470 second-feet),

ICE. Stage-discharge relation usually affected by ice from December to April; discharge ascertained by comparison with records at Sunkhaze Rips col lected by Thomas W. Clark.

REGULATION. Flow largely controlled by storage, principally in lakes tributary to West Branch. Records not corrected for storage.

ACCURACY. Stage-discharge relation practically permanent except as affected by ice and occasionally by logs. Rating curve well defined. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage height taken from recorder graph, except for period of ice effect and at times of serious fluctuations in stage when the mean of 2-hour periods was used. Records good.

COOPERATION. Gage-height record furnished by Thomas W. Clark, hydraulic engineer, Old Town, Me. Occasional discharge measurements made by students of the University of Maine under direction of Prof. A. C. Lyon.

The following discharge measurement was made: May 6, 1926: Gage height, 14.30 feet; discharge, 62,700 second-feet.

Daily discharge, in second-feet, of Penobscot River at West Enfield, Me., for the year ending September SO, 1926

Day

1 _ .. __ .. _2. _________3.... __ ......4 ___ ..... _ .5. ___ ........

6 .-- ..-...7...............8.__. _ .____.__9...............

10...............

11.... ______12...............13. ________14_.___.______.__15... .. .- !>- 16...............I?...............18...............19 ..... ....20........ .

Oct.

6,4606,2206,4607,4708,550

10,30010,60010,30010,00010,900

18,20019, 40018,60017,30016,500

17,70018,60019,40019,00019.400

Nov.

17,30015,40014,30013,20012,500

12,20011,90011,90016,50021,600

20,70018,60017,30022,50028,000

29,10046,10043,70037,10033.500

Dec.

15,00015,40015 40014,60014,300

17,70031,30031,30026,50021,200

19,40019,40017,70014,00012,500

11,50013,00013, 50013,00012.000

Jan.

7 8007,4007 0006,6006,600

6,6006,8006,8006,800

6,4006,6007,0007,2007,200

7 nnn6,8006,0007 4nn9.400

Feb.

7,8008,0007 4nn7,4007,400

7,4007,0006,8007,2007,200

7,2007,0007,0006,8006,800

7,0006,6006,4006,4006.400

Mar.

6,6007,0007,0007,0007,000

7,0007,0006,4006,8007,200

7,4007,2007,0006,8006,400

6,8006,8006.8006,8006.800

Apr.

7,8008,0008,0008,0007,400

8,0008,6008,2008,6009,000

9,4009,4009,8009,8009,800

10,00010,00010,00010,00011.000

May

39,50043, 70049,60060,80066,400

61,50056,60053,80051,00048,200

43,70038,90035,90032,90030,200

27,50025,50024,00022,00020*300

June

17,30014,30013,90013,60013,900

14,60013,20015,00013,90013,900

13,20011,90010,60010,60011,200

13,20013,20011,90012,20013.200

July

7,7307,7307,7306,9606,580

6,3406,8406,7106,8406,960

6,7106,3407,2106,9606,840

6,4606,5806,7106,1006.710

Aug.

5,5204,7404,9604,7404,520

4,7404,5205,4005,9806,710

6,1006,2205,5205,6405,400

4,1004,9604,8505,0704,420

Sept.

5,7505,4005,5205,1805,290

4,6304,4205,2905,4005,290

5,2905,1804,5205,0705,070

5,4005,9806,9606,5805,290

PENOBSCOT EIVER BASIN 19

Daily discharge, in second-feet, of Penobscot River at West Enfield, Me., for the year ending September SO, 1926 Continued

Day

91

22 ... 23 ___ . ........24 .. .25

26 ............27 _______ ...28 _________29...............30 31 ............

Oct.

10 /A/nf\18,60016,90016,20015,800

21,60027,00025,50023,00021,60019,800

Nov.

30,20026,00023,00027,50028,000

25,50024,00022,00019,00016,900

I>ec.

U nftn9,800

10,5009,8009,200

8,6008,8008,2008,2098,6009,000

Jan.

U nfln11,00011,00011,00011,000

11,00010,0009,4009,4008,6008,200

Feb.

6,4006,2006,8007,0007,000

7,2007,4007,200

Mar.

6,8006,2006,4007,0007,000

7,0007,0007,2007,0007,4007,600

Apr.

11 nan12,60016,20017,70024,000

30,70035,90034,10034,70037, 700

May

19,00018,20018,60026,50029,600

29,10028,00025,50023,50021,60019, 400

June

12,50012,50011,20010,3008,550

7,7306,9606,5807,7307,470

July

6,4606,1006,1006,1006,100

5,2905,7505,6405,5205,6405,750

Aug.

4,7404,8504,2104,7406,220

6,7106,2206,7106,9605,7505,860

Sept."4

5,8605,7505,6406,2206,340

6,7105,9806,8406,8406,340

NOTE. Stage-discharge relation affected by ice Dec. 14 to Apr. 22.

Monthly discharge of Penobscot River at West Enfield, Me., for the year endingSeptember SO, 1926


Month

April -. . . . May.. ____________ . _ - _ . _ . ....

July. .....................................


Maximum

27,000 46,100 31,300 11,000 8,000 7,300

37,700 66,400 17,300 7,730

6,960 6,960

66,400

Minimum

6,220 11,900 8,200 6,000 6,200 6,200 7,400

18,200 6, 580 5,290 4,100 4,420

4,100

Mean

16,000 22,800 14,500 8,120 7,010 6,920

14,500 35,200 11,900 6,500 5,390 5,670

12,900

Per square mile

2.42 3.45 2.20 1.23 1.06 1.05 2.20 5.33 1.80 .985 .817 .859

1.95

Run-off in inches

2.79 3.85 2.54 1.42 1.10 1.21 2.46 6.14 2.01 1.14 .94 .96

26.56

NOTE. Monthly discharge in second-feet per square mile and run-off in inches do not represent the natural run-oft from basin because of storage. (See "Regulation.")

EAST BRANCH OF PENOBSCOT RIVER AT GRINDSTONE, ME.

LOCATION. At Bangor & Aroostook Railroad bridge half a mile south of rail road station at Grindstone, Penobscot County, one-eighth mile above Grind stone Falls, and Q% miles above confluence with West Branch at Medway.

DRAINAGE AREA. 1,070 square miles; includes about 240 square miles of Cham berlain Lake drainage (measured on maps compiled by Maine Water Power Commission).

RECORDS AVAILABLE. October 23, 1902, to September 30, 1926.GAGE. Chain attached to railroad bridge; read by R. D. Porter.DISCHARGE MEASUREMENTS. Made from railroad bridge or by wading.CHANNEL AND CONTROL. Practically permanent. Stream confined by abut

ments of bridge and broken by one pier at ordinary stages. Velocity of current medium at moderate and high stages but sluggish at low water.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 11.16 feet at 4 p. m. May 4 (discharge, 13,700 second-feet); minimum fetage, 4.30 feet August 20 and 21 (discharge, 270 second-feet).

1902-1926: Maximum stage recorded, 16.5 feet April 30, 1923 (discharge, by extension of rating curve, 35,100 second-feet); minimum discharge esti mated at 30 second-feet February 28, 1904, when stage-discharge relation was affected by ice.


ICE. Ice forms to a considerable thickness at gage and down to head of Grind stone Falls, and although the falls usually remain open during greater part of winter, the stage-discharge relation is somewhat affected.

REGULATION. Dams maintained at outlets of a number of lakes and ponds near source of river are regulated for log driving; during the summer and fall gates are generally left open. The basin of the East Branch since about 1840 includes about 240 square miles of territory draining into Chamber lain Lake that formerly drained into the St. John River Basin, the diversion being made through what is known as Telos Canal. Results not corrected for storage and diversions.

ACCURACY. Stage-discharge relation practically permanent except as affected by ice and occasionally by logs. Rating curve well defined. Gage read to hundredths twice daily, except on Sundays and during winter when it was read once a day. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

Discharge measurements of East Branch of Penobscot River at Grindstone, Me., during the year ending September SO, 19%6

Date

Feb. 3.. .....

height

Feet «5.70"5.49

Dis charge

Sec.-ft. 756469

Date

TVTflr 11

Gage height

Feet »7.1111.07

Dis charge

Sec.-ft. 1,080

13, 100

Date Gage height

Feet 4.69

Dis charge

$ec.-fl. 494

Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of East Branch of Penobscot River at Grindstone, Me., for the year ending September 80, 1926

Day

1 _ ............2. _ ..... _ ...3.. ..........4 _ . _ ........5. _ . ____ ...

6 _ ....... _ -7...............8... .........9. ___ . _ ....

10 _ ..- ...

11 _____ ......12. ____ ... ...13 14.. ____ ......15...... _ ......

16 . _ ........17 18 __ ..........19........ ..20 _ ........

21... ______ ..22........ -..23. _____ .. ...24...............25. __ ..........

26 ___ __ ..27 . 28. ___ ........29 ......30... ______ .31 ...........

Oct.

8501,020

730770

1,250

1,1601,1101,060

9751,110

2,1001,8801,7401,6701,810

9 7nn2,5503,0003,1604,050

3,8603,6703,4903,1603,160

4,6504,6504,0503,6703,6703,670

Nov.

3,3202,5509 isn2,1802,020

2,0202,1002,2504,6504,050

3,3203,0003,0006,250

6,02011, 4009,3407,4706,490

6,2506,0205,7905,3305,100

4,8704,2404,0503,3203,700

Dec.

3,5003,2003,0002,8009 HIM

2,5805,1904,3403,6703,160

3,5003,9003,7003,7003 onn

4,200

4,2003,5003,500

2,8001,9501,9001,8001,600

1,5001,3501,2501,1501,050

980

,Jan.

920860840800760

700640620580560

560540KAfi

540540KOft

520500560

980900900940

1,000

70058052050050048n

Feb.

470470470470470

470460

460AfL(\

4604604604«n460

4604Afl

460460

7601,1001,1001,1001,100

1,1001,1001,100

Mar.

1,1001,1001,1001,1001,100

1,1001,1001,1001,1001,100

1,1001,1001,1001,1001,050

1,000080940o9n900

880860860860840

840840840840780780

Apr.

7607407fifl76074n

720720700700720

7407407407207/tn

74fl

700660640620

640700800

1,1501,550

2,4003,5004,0504,2404,650

May

5,5606,7308,790

13,20013, 200

12,30010,80010,5009,9109,620

8,7908,2507,9907,4707,220

fi ion5,7905,100i ddn4,240

4,4404,0504,0504,6504,650

4,2404,0503,8603,8603,6703,670

June

3,4903,86040503,6703,160

3,0002,1803,0002,8502,700

2,5502,4002,3202,2502,100

2,5502,3202,7009 7nn2,550

2,1801,9501,8101,9501,200

1,0601,020

975930

1,880

July

2,1001,9501,9501,8801,880

1,8801,8801,8801,9501,880

1,9502,0201,9501,8801,810

1,6701,6001,5401,4201,020

975975

1,0201,060

975

930930890930

1,1601,020

Aug.

585345370320320

295295585770930

890850810690520

320295295295270

270295320850890

850850975930850770

Sept.

850655585550460

460620655585620

620585520490490

520770810655550

490490430490550

600655550520460

NOTE. Stage-discharge relation affected by ice Nov. 30 to Dec. 3 and Dec. 11 to Apr. 27; discharge for this period based on gage heights corrected for effect of ice by means of three discharge measurements. Dis charge estimated Sept. 26.


Monthly discharge of East Branch of Penobscot River at Grindstone, Me., for the year ending September SO, 1926


Month

March _ . _______ . ____________April . ... .. . ........

JulyAugust... .....................................


Maximum

4,650 11,400 5,190 1,000 1,100 1,100 4,650

13,200 4,050 2,100

975 850

13, 200

Minimum

730 2,020

980 480 460 780 620

3,670 930 890 270 430

270

Mean

2,460 4,610 2,900

679 633 981

1,270 6,830 2,380 1,510

577 576

2,130

Persquare mile

2.30 4.31 2.71 .635 .592 .917

1.19 6.38 2.22 1.41 .539 .538

1.99

Run-off in inches

2.65 4.81 3.12 .73 .62

1.06 1.33 7.36 2.48 1.63 .62 .60

27.01

MATTAWAMKEAG BIVER AT MATTAWAMKEAG, HE.

LOCATION. At Maine Central Railroad bridge at Mattawamkeag, Penobscot County, half a mile above mouth of river.

DRAINAGE AKEA. 1,500 square miles.RECORDS AVAILABLE. August 26, 1902, to September 30, 1926.GAGE. Chain fastened to railroad bridge; read by J. C. Handy.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Channel at bridge broken by two piers; practically

permanent.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 13.15 feet at

9 a. m. May 6 (discharge, 24,100 second-feet); minimum stage, 3.70 feet August 24 (discharge, 275 second-feet).

1902-1926: Maximum stage recorded, 19.55 feet May 1, 1923 (discharge by extension of rating curve, 43,900 second-feet); minimum discharge, 86 second-feet October 4-12, 1905, September 19 and October 6, 1906, Sep tember 24-29, 1908, and October 14-17, 1910.

ICE. Stage-discharge relation affected by ice.REGULATION. Dams are maintained at outlets of several large lakes and ponds,

but the stored water is used only for log driving.ACCURACY. Stage-discharge relation practically permanent except as affected

by backwater from log jams, ice, or other obstructions. Rating curve well defined below 25,000 second-feet. Gage read to quarter-tenths twice daily, except during winter when it was read once daily. Daily discharge as certained by applying mean daily gage height to rating table. Records good.

Discharge measurements of Mattawamkeag River at Mattawamkeag, Me., during the year ending September SO, 1926

Date

Mar. 2..........

Gage

Feet «7.30"6.48

Dis charge

Sec.-ft. 1,330

966

Date Gage height

Feet 13.095.08

Dis charge

Sec.-ft. 23,9001,630

Date Gage height

Feet H.02

Dis-. charge

Sec.-ft. 449

« Stage-discharge relation affected by ice. * Stage-discharge relation affected by fish dam.

22 SURFACE WATEB SUPPLY, 1926, PAET I

Daily discharge, in second-feet, of Mattawamkeag River at Mattawamkeag, Me., for the year ending September SO, 1926

Day

1 __ . ____ .2 _______ ...3 ...............4 __ . _ .......5. ...........

6 _ .... ___ ..7.. .......8 ............9 _ . __ ......

10 ____ j ....

11...............12 ___ ... _ ...13..... .......14...............15.. ._ __ ...

16. . .17 . 18 ___ . __ ...10

20 __ . __ . _ .

21 _ .... ___ ..22 ________ .23. 24... _ .... __ ,25. ...........

26. .......27. .......28...............29 _ ............30............... 81...............

Oct.

1,3501,1001,1001,7502,900

3,8004,0003,8003,8004,000

5,9107,3507,8607,8607,100

6,8507,1007,3507,3507,350

6,8506,3706,1405,9105,910

5,9106,8507,6007,6007,350 6,850

Nov.

6,1405,4605,0204,2003,800

3,6103,2303,0403,8006,020

5,4605,4605,4605,4606,370

6,8509,420

10,20010,80010,500

9,9608,9007,8608,1208,380

*8,1207,8607,3506,1405,200

Dec.

4,6004,2004,0003,4203,230

3,0404,6005,9105,9104,810

4,2003,8003,4003,0002,800

2,5002,3002,1002 nnn1,850

1,7501,6501,5501,5001 4W

1,4001,3501,3501,4001,350 1,350

Jan.

1,4001,4001,4501,4501,400

1,3501,3501,3001,3001,250

1,2501,2501,2501,2501,250

1 2501,2001,1501 QAA

1,500

1,6001,6001 6001,6001,650

1,7001,6501,5501 *ain1,450 1,450

Feb.

1,4001,3001,2501,2501,150

1,1501,1501,1501,1001,100

1,0501,0001,0001,0001,000

1,0001,0001,0001,000

980

960960960960960

960Qfifl

1,000

.......

Mar.

1,000960960960960

960960

1,0001,0501,100

1,1001,1501,1601,1501,150

1,1001,1001,1001,1001,050

1,0501,0501,0501,1001,100

1,1501,2001,2501,2501,300 1,350

Apr.

1,3001,3001,3001,3001,300

1,3501,3501,4001,6001,550

1,5501,6001,7001,7501,850

1,9002,0002,2002,3002,600

3,2003,6004,4005,2006,140

7,6009,420

10,20011,30012,500

May

13,40015,40018,30022,00023,900

23,90023,50022,40020,90019,800

18,30016,20014,80012,80011,900

10,5009,4208,6407,8607,100

6,1405,0204,2006,6108,380

8,6408,1206,8505,6805,020 4,200

June

3,6103,2303,2302,8703,230

3,2303,0403,2303,2303,230

3,2302,8702,7002,3802,230

2,2302,2302,0909 flon2,530

2,6302,2302,0901,8301,700

1,5001,3801,310i ion1,140

July

1,020970920820770

722675630585585

585630630630585

542500500542630

630585630500500

500500460452420 380

Aug.

370370370360345

345345380380390

420410400380380

370370370370360

350345331275390

400380400410400 400

Sept.

390380370350345

331350380m389

3463804CO420420

460580580720720

680580540580620

680900

1,100980900

NOTE. Stage-discharge relation affected by ice Nov. 30 to Dec. 1 and Dec. 12 to Apr. 24; discharge based on gage heights corrected for effect of ice by means of two discharge measurements. Stage-discharge relation affected by fish dam Oct. 1-5, July 31 to Aug. 4, Aug. 8-21, Aug. 25 to Sept. 4, and Sept. 7-30; dis charge computed from gage heights corrected for effect of fish dam by means of one discharge measurement.

Monthly discharge of Mattawamkeag River at Mattawamkeag, Me., for the year ending September 80, 1926


Month

October- ____________________November _ . _ . ............................December ___________________

February ......................................March ______________________

May . . . June ______________ ____ _ .July............... ............................August. ...... _.- .__ September ___________________

The year. ________________


Maximum

7,860 10,800 5,910 1,700 1,400 1,350

12,500 23,900 3,610 1,020

420 1,100

23,900

Minimum

1,100 3,040 1,350 1,150

960 960

1,300 4,200 1,140

380 275 331

275

Mean

5,580 6,570 2,830 1,410 1,060 1,090 3,560

12,600 2,450

614 373 541

3,240

Per square mile

3.72 4.38 1.89 .940 .707 .727

2.37 8.40 1.63 .409 .249 .361

2.16

Run-off in inches

4.29 4.89 2.18 1.08 .74 .84

2.64 9.68 1.82 .47 .29 .40

29.32


PISCATAQUIS RIVER NEAR FOXCROFT, ME.

LOCATION. At highway bridge known as Lows Bridge, three-fourths mile abovemouth of Black Stream, 3 miles below Mill Stream, and 4$ miles aboveFoxcroft, Piscataquis County.

DRAINAGE ABBA. 286 square miles.RECORDS AVAILABLE. August 17, 1902, to September 30, 1926. CAGE. Staff attached to left abutment of bridge; read by A. F. D. Harlow. DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Practically permanent. Banks high;, overflowed only

during extreme floods. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9.30 feet at

3.30 p. m. November 16 (discharge, 7,390 second-feet); minimum stage,1.40 feet several times during July and September (discharge, 15 second-feet).

1902-1926: Maximum discharge recorded, about 21,700 second-feetSeptember 29, 1909; minimum discharge, 5 second-feet August 6, 1905, andNovember 22, 1908 (water held back by dams).

ICE. Stage-discharge relation affected by ice. REGULATION. The stream is used to develop power at several manufacturing

plants above station; distribution of flow somewhat affected by operationof wheels.

ACCURACY. Stage-discharge relation practically permanent except as affectedby ice. Rating curve well defined between 30 and 5,000 second-feet. Gageread to quarter-tenths twice daily. Daily discharge ascertained by applyingmean daily gage height to rating table. Records fair.

Discharge measurements of Piscataquis River near Foxcroft, Me,, dilring the year ending September SO,

Date

Jan. 12..... .... .Feb. 5... .. ............

Gage height

Feet 3.79-3.50

Dis charge

See.-ft. 304281

Date

Mar. 27. __ ... _____ ...

satFed 3.80

3.23

Difr charge

See.-ft. 322603


Daily discharge, in second-feet, of Piscataquis River near Foxcroft, Me., for the year ending September 30, 1926

Day

1 ___ . _ ....2 _____ . ___3 __ . _ . __ .4 ___ .........5 ............

6 __ ...........7 _____ ......8...............§ 10..

11 ...............12 _ .... _ ..13...............14. ...........15 ... ... ... _

16..............17. 18. ..19...... _ ......20. __ .......

Oct.

202180114400520

490520448448

1,360

2,4501,2701,1001,1401,060

1,1801,7601,9501,4501.360

Nov.

765800765625695

590460625

1,3601,450

765800

1,7504,2002,560

5,2004,3202,5601,8501.550

Dec.

900880800695870

2,3503,4801,9501,3601,360

1,4501,7501,8001,8001,550

1,2001,200980900580

Jan.

340290270400420

340370400290200

250250250220220

135155270440660

Feb.

270230210290230

200175210175230

27029021090110

16513511510090

Mar.

11590125130130

130100135155175

17012512090115

9090809074

Apr.

1008284270270

230210210140290

250290270260270

270320460600660

May

2,7803,9605,3205,9605,450

3,9603,7202,5602,5602,350

1,7501,2701,2701,2701,270

1,1801,1801,020870800

June

49046D430430430

272372490695595

460400320460

1,180

1,060800765870870

July

11491128114114

7257509126

2634576464

4434348250

Aug.

2320304439

3939264447

3644392620

3034343434

Sept.

8250442620

2364826444

2020202018

1830263444


Daily discharge, in second-feet, of Piscataquis River near Foxcroft, Me., for the year ending September 30, 1926 Continued

Day

21. 2223... .... ........24.... .. ......25

26. .......97

28. 29....... ........30 .... ........31

Oct.

1,100800800625

1,360

2,7801,5501,5501,5501,2701,550

Nov.

1,3601,1801,4501,4501,270

1,1001,0201,020

660835

Dec.

720720700660580

370320390350350390

Jan.

740600600560400

340330320320290

Feb.

79155145115155

17011072

Mar.

72140115135210

320270230240175140

Apr.

620620

1,2501,9503,000

3,8403,720

2,4502,670

May

800590

1,2701,3601,360

800625520490460590

June

660460460430225

294294180119114

July

3957443934

50in39304426

Aug.

3426446091

5796

249114

57141

Sept.

5057

10215791

4491

1287257

NOTE. Stage-discharge relation affected by ice Dec. 1,2, and Dec. 11 to Apr. 23; discharge based engage heights corrected for effect of ice on basis of three discharge measurements.

Monthly discharge%of Piscataquis River near Foxcroft, Me., for the year endingSeptember SO, 1926

[Drainage area, 286 square miles]

Month

October........ _ . _ . _________

December.. .. _____ __________JanuaryFebruary _

April.........................................May

July ...... ..... ...... . .. . ..AugustSeptember. ... _ .. _ . __

The year ... ______________


Maximum

2,780 5,200 3,480

740 290 320

3,840 5,960 1,180

128 249 157

6,960

Minimum

114 460 320 135 72 72 82

460 114 26 20 18

18

Mean

1,110 1,500 1,080

350 171 141 940

1,910 502 58.0 53.5 53.3

659

Persquare mile

3.88 5.24 3.78 1.22 .598 .493

3.29 6.68 1.76 .203 .187 .186

2.30

Run-off In inches

4.47 5.85 4.36 1.41 .62 .57

3.67 7.70 1.96 .23 .22 .21

31.27

PISCATAQUIS RIVER AT MEDFOED, ME.

LOCATION. At lower ferry in Medford, Piscataquis County, 1% miles above mouth of Schoodic Stream and 14 miles above confluence with Penobscot River.

DBAINAGE AREA. 1,170 square miles.RECOBDS AVAILABLE. June 27, 1924, to September 30, 1926.GAGE. Inclined staff on left bank 300 feet below ferry; read by E.-E. Chaples.DISCHARGE MEASUREMENTS. Made from ferryboat or by wading.CHANNEL AND CONTROL. Bed covered with gravel and alluvial deposits. Con

trol well defined by riffle of boulders one-fourth mile below gage.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 11.9 feet at

6.30 a. m. November 17 (discharge by extension of rating curve, 22,800 second-feet); minimum stage, 2.21 feet at 6.45 a. m. September 6 (discharge, 294 second-feet).

1924-1926: Maximum stage recorded, that of November 17, 1925; mini mum stage, 1.82 feet November 10, 1924 (discharge, 172 second-feet).

ICE. Stage-discharge relation affected by ice.


REGULATION. Distribution of flow during low-water periods somewhat affected by operation of power plants above on main river and tributaries.

ACCURACY. Stage-discharge relation permanent except as affected by ice. Rating curve well defined below 20,000 seaond-feet. Gage read to hundredths twice daily except during winter when it was read once a day. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

Discharge measurements of Piscataquis River at Medford, Me., during the year ending September SO, 1926

Date

Feb. 4..........

Gage height

Feet «4.27-4.67

Dis charge

Sec.-ft. 1,1501,320

Date

Mar. 26 __

Gage height

Feet «5.4310.98

Dis charge

Sec.-ft. 1,210

19,500

Date

May 12. _ .....

Gage height

Feet 6.704.80

Dis charge

Sec.-fl. 6,3702,730

0 Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Piscataquis River at Medford, Me., for the year ending September 80, 1926

Day

1 2 _ .......3 4 ...5 ..... ... .

6 ... ... 7...............8 _ ............9. ..... __ ..10

11 12 __ ........13 14. .........16 ............

16 ,- _17.... ...........18 19 20

21....... ........22 23 __ ......24...... .........25

26... ... ......27... .. _ .28 29...............30 ...0-1

Oct.

860900940

1,4201,560

1,6201,3701,3701,3201,370

5,0303,8902,8802,5802,440

3,8903,7104,0703,7103,360

3,5303,0402,5802,4401,790

7,3607,6205,8905,6605,4404,260

Nov.

2,8802,7302,4402,1702,170

2,0402,0402,0406,3707,620

5,6604,6404,0709,52010,400

11,60022,50015,50011,3009,240

7,3605,0304,2606,1304,830

4,0703,3602,8802,4402,440

Dec.

2,4402,3002,8802,4402,440

5,89014,20010,4007,8805,030

4,0703,5003,3003,3003,300

3,2003,1003,0002,7002,200

1,9001,9502,1002,2002,100

1,6001,5001,5001,4001,3501,250

Jan.

1,2501,1001,1001,2001,200

1,2001,1501,2001,1501,150

1,2001,1501,1501,1001,100

1,0501,000980

1,2501,750

2,1001,8001,7001,6001,500

1,4001,3501,2501,2001,2001,150

Feb.

1,1001,2001,1501,2501,350

1,3001,2501,2501,2001,200

1,2001,2001,1501,1501,100

1,1001,0501,0001,0001,000

940940

1,0001,0001,000

1,0001,000

980

Mar.

940940940960940

940940940940960

940900920860880

960980

1,000980980

940960

1,0001,0501,100

1,2001,2001,2501,1501,1501,100

Apr.

1,1501,1501,1501,1501,150

1,2501,2001,2001,3001,700

1,8501,8501,9001,9001,950

2,1002,2002,1002,1002,200

2,5002,8003,2004,3009,240

12,90013,50011,30010,10010,400

May

10,40011,30014,50018,60019,200

14,80012,20011,60010,40010,400

7,3606,3705,8905,0304,450

4,4504,4504,4504,0703,710

3,5303,5302,8804,6405,030

4,0703,7102,8802,8802,8802,880

June

3,0403,0402,5802,7302,170

1,9102,0403,0402,8802,730

2,3001,6201,3201,6201,790

4,0703,5302,5803,3603,200

2,5801,9101,6701,4601,370

1,060980980980980

July

900900860700665

700780740700700

665740780700665

665630595700780

780665700700560

525560665595560490

Aug.

380460560560490

490460

1,060940740

700595560525405

525' 525490460356

380380312460

1,020

9801,1001,1901,140860860

Sept

666595560560490

312560700630665

595525405525526

4901,0601,190700900

940820820860

1,100

1,060980860

1;100900

NOTE. Stage-discharge relation affected by ice from Dec. 12 to Apr. 24; discharge for this period based on gage heights corrected for effect of ice by means of three discharge measurements.


Monthly discharge of Piscataquis River at Medford, Me., for the year endingSeptember 30,


Month

October ___________________December.. ____ . ______________

February ____________________

July.. .. .-__ .-. ____.__ ._...____

September ___________________The year. ....... ...................


Maximum

7,620 22,600 14,200 2,100 1,350 1,250

13,500 19,200 4,070

900 1,190 1,190

22,500

Minimum

860 2,040 1,250

980 940 860

1,150 2,880

980 490 312 312

312

Mean

3,160 5,990 3,430 1,280 1,110

998 3,760 7 180 2, 180

689 644 736

2,600

Per square mile

2.70 5.12 2.93 1.09 .949 .853

a 216.14 1.86 .589 .550 .629

2.22

Run-off in inches

an5.71ass1.26 .99 .98

3.58 7.08 2.08 .68 .63 .70

30.18

SEBEC RIVER AT SEBEC, HE.

LOCATION. 1,000 feet below highway bridge and dam at outlet of Sebec Lake, Sebec, Piscataquis County.

DBAINAGE ABBA. 344 square miles.RECORDS AVAILABLE. October 17,, 1924, to September 30, 1926.GAGS. Water-stage recorder on left bank 1,000 feet below dam at outlet of

Sebec Lake; inspected by E. W. Ames.DISCHAHGE MEAStrREMENTs. Made from cable 50 feet below gage or by wading.CHANNEL AND CONTBOL. Bed covered with gravel and small boulders. Control

for low and medium stages is well-defined riffle 100 feet below gage; control for high stages at head of falls 4 miles below gage.

EXTREMES OP DISCHABQE. Maximum stage during year from water-stage recorder, 7.25 feet at 10 p. m. November 16 (discharge, 3,670 second- feet); minimum stage, 1.92 feet on several days during October, 1925, and September, 1926 (discharge, 106 second-feet).

1924-1926: Maximum stage recorded, that of November 16, 1925; minimum stage, 1.36 feet January 25, 1925 (discharge, from extension of rating curve, 20 second-feet).

ICE. Stage-discharge relation not affected by ice.REGULATION. Flow at ordinary stages completely regulated by dams and

storage reservoirs above station. Records not corrected for storage.ACCTTBACY. Stage-discharge relation permanent. Rating curve well defined

between 70 and 3,000 second-feet. Operation of water-stage recorder satisfactory except for short periods indicated in footnote to daily-discharge table. Daily discharge ascertained by applying to rating-table mean daily gage height determined by inspection of recorder sheets, except on days when fluctuations were large, the mean of 2-hour periods, or the discharge integrator was used. Records good.

The following discharge measurements were made: June 3, 1926: Gage height, 3.00 feet; discharge, 541 second-feet. June 24, 1926: Gage height, 2.76 feet; discharge, 411 second-feet. August 4, 1926: Gage height, 2.71 feet; discharge, 393 second-feet.


Daily discharge, in second-feet, of Sebec River at Sebec, Me., for the year endingSeptember 30, 1926

Day

1 -. ..2..............3..............4... ...........5-.---. _ .. ...

6..............7.... ___ .....8..... .........9.. ._.._.___

10..... .........

11.. ...... ......12..............13....... ....14....... .......15..............

16.. ....... .....17..............18... ........19.. 20

21.. ...22 23... ....... ....24 25 . . ..

26..... .........27 ......28..... .........29 ..........30 .........31 ...

Oct.

258

253140270

286277256268254

165258260254257

269238138249252

261272326357552

1,1101,4601,5301,5301,3901,080

Nov.

942975780780806

696584770

1,6001,670

1,530983942

1,8401,950

3,0703,6303,5503,4703,310

2,2701,2801,1801,3601,080

638734715722660

Dec.

600520464464602

1,2502,1102,1901,9901,390

793722670728708

722748562320250

303295291288232

280280280280280288

Jan.

295295284350360

340330340330230

350340330350330

300240320330310

320

310230320

320310350380315230

Feb.

315

320325

400250370370365

365375360285375

385385370375360

270320380320315

320295225

Mar.

335320320320330

360250275350

345365335255370

440440410410375

285410400440435

415370230340365

Apr.

345355360235360

355360410560620

520630640630660

660590500580420

370360375400800

1,6002,3502,5902,5102,510

May

2,5102,5902,9103,3903,310

3,3903,3903,2303,0702,270

1,7401,7401,7001,4201,220

1,1401,140

910878845

910878832942942

1,0101,1401,1401,140

910942

June

942722552660840

780870690475430

440415550780910

1,2201,010

793975

1,080

660370280290305

285280395370365

July

300275255250255

330300305310330

325380375405380

300255192290250

250280280225186

300310265290260265

Aug.

215275265270290

295242144263252

263264273258237

281308273234270

274170286307236

257279210174324282

Sept.

286313277194

284262282336291

189204300272310

304267213187314

285331269306262

175302279301285

NOTE. Water-stage recorder not in op discharge for these periods estimated by

Monthly discharge of Sebec Riv

[Dra

ration Nov. 30 to Dec. 2, Dec. 28-30, Jan. 4-28, and Feb. 20-24; somparison with records at power station just above.

r at Sebec, Me., for the year ending September SO, 1926

nage area, 344 square miles]

Month

April . _ .

July... .. ....... ....... .,


Maximum

1,530 3,630 2,190

380 400 440

2,590 3,390 1,220

405 324 336

3,630

Minimum

138 584 232 230 225 230 235 832 280 186 144 175

138

Mean

475 1,480

674 315 336 356 788

1,730 624 289 257 269

634

Persquare mile

1.38 4.30 1.96 .916 .977

1.03 2.29 5.03 1.81 .840 .747 .782

1.84

Run-off in inches

1.59 4.80 2.26 1.06 1.02 1.19 2.56 5.80 2.02 .97 .86 .87

25.00

NOTE. Monthly discharge in second- natural flow from basin because of artiflc

63435 30 3

eet per square mile and run-off in inches do not represent the il storage. (See "Regulation.")


P1EASAKT EIVEE AT MIIO, ME.

LOCATION. At highway bridge known locally as Snows Bridge in Milo, Piscata-quis County.

DRAINAGE AREA. 325 square miles (measured on map compiled by MaineWater Power Commission).

RECORDS AVAILABLE. June 4, 1920, to September 30, 1926. GAGE. Chain on downstream side of bridge near left abutment; read by Anna

L. Fowler.DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Bed covered with coarse gravel. Control for low

stages is a well-defined riffle 100 feet below gage; control at high stagesformed by series of riffles extending 1 mile below gage.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.50 feetat 7.45 a. m. November 17 (discharge, 8,630 second-feet); minimum stage,2.25 feet at 4 p. m. August 21 (discharge, 28 second-feet).

1920-1926: Maximum stage recorded, 14.33 feet April 30, 1923 (discharge,by extension of rating curve, 24,400 second-feet); minimum stage, 2.10 feetJuly 29, August 2, and September 11, 1921 (discharge, 22 second-feet).

ICE. Stage-discharge relation affected by ice. REGULATION. The flow is partly regulated by a power development at Brown-

ville and by storage dams at headwaters which are used during log-drivingseason.

ACCURACY. Stage-discharge relation changed at time ice left river April 25.Rating curves fairly well defined between 100 and 6,000 second-feet. Gageread to hundredths twice daily except during winter when it was read oncea day. Daily discharge ascertained by applying mean daily gage heightsto rating table. Records good.

Discharge measurements of Pleasant River at Milo, Me., during the year endingSeptember 80, 1926

Date

Oct. 20.. ... .Jan. 6 ______Feb. 3...

Gage height

Feet 3.65

«4.59«4.20

Dis charge

See.-ft. 1,040

248295

Date

Mar. 27.........

May 12.........

Gage height

Feet «5.09

6.174.16

Dis charge

Sec.-ft. 316

6,1801,840

Date

June 24 .........

Gage height

Feet 3.683.212.65

Dis charge

See.-ft. 1,140

601204

« Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Pleasant River at Milo, Me., for the year endingSeptember SO, 1926

Day

I...... .........2 ___ .........3 _____ ......4 _ 5

6 ________ .-78.....-.-..-...9...............

10.. ........._.. .

11 1213 . ___ ....14... ____ .....15 ___ ..........

Oct.

216296341509471

501303407341548

1,100860658571860

Nov.

807509486449471

486486563

2,0502,140

1,6001,2801,3403,3703.080

Dec.

580560560560660

1,7503,1701,8901,5401,340

1,3001,000860800760

Jan.

270270260

240

220250290270290

270270290280270

Feb.

310300300320320

330330320300300

300300300270250

Mar.

210200210220220

230230230230220

220200195185180

Apr.

310320330340350

360370370380460

560620640660680

May

1,7402,3603,2605,7805,540

3,9203,0603,2603,0602,660

2,0801,9901,5801,3001.440

June

1,2401,0401,440

789

690670

1,3001,5101,300

1,170556475530778

July

296316322246246

228259246216240

296271253246222

Aug.

70131131175131

120142148228170

17011014811575

Sept.

21&193142158148

158216204210181

175153175181158

PENO

Daily discharge, in second-feet, Septem

Day

16...............17... . ......... ..18 19... ...... ......20.. . ........ ....21...............22...............23...............24...............25 ............26... ............27 ............28...............29...............30.... ...........31...............

Oct.

1,4701,2201,220

980980

1,3401,1601,040

754540

1,8901,7401,3401,4701,280

920

Nov.

4,8407,0203,7902,7901,8901,1001,0401,2801,4701,2801,1001,100

614

571

Dec.

740720700700680680680680660640

640640580520440350

an.

250240240390680660<un450400360350350350350330320

Feb.

270230200250270230220200200170200210210

Mar.

180

195185210

230260280320320310300300290290

Apr.

680700700720820900

1,1001,3001,4501,6509 9fift1,9001,5101,4401,740

May

1,7401,7401,8201,8201,2401,3701,5101,1702,080

1,3701,300

9201,2401,4401,440

June

1,440ftfift

7561,040

920719610640582490290271271259259

July

222210210246228187148148120115

13611585

12070

115

Aug.

16412011095

10532

105120100199216395482335271265

Sept.

175OQQ

4029/in522335284316259328328284228296277

ISCOT RIVER BASIN ZW

Pleasant River at Milo, Me., for the year ending er 30, 1926 Continued

NOTE. Stage-discharge relation affect height corrected for effect of ice by mean

Monthly discharge of Pleasant R

by ice Dec. 1-6 and Dec. 11 to Apr. 25; discharge based on gage of three discharge measurements.

er at Milo, Me., for the year ending September 30r 1926

[Dra: nage area, 325 square miles]

Month

October __________________November. _ L _________ . __ . ...

February. ________ . __ . __ ....

April. ______________ . ____

July.... ............ . ...

September __ . _____ . __ . _ .....The year


Maximum

1,890 7,020 3,170

680 330 320

2,260 5,780 1,510

322 482 522

7,020

Minimum

216 449 350 220 170 180 310 920 259 70 70

142

70

Mean

881 1,660

883 334 265 234 854

2,170 798 206 167 244726

Persquare mile

2.71 5.11 2.72 1.03 .815 .720

2.63 6.68 2.46

.634

.514

.7512.23

Run-off in inches

3.12 5.70 3.14 1.19 .85 .83

2.93 7.70 2.74 .73 .59 .84

30.36

PASSADUHKEAG RIVER AT IOWEII, ME.

LOCATION. Half a mile below County, and 10 miles abo

DRAINAGE AREA. 301 square RECORDS AVAILABLE. October GAGE. Water-stage recorder o

inspected by M. J. Leard. DISCHARGE MEASUREMENTS. I CHANNEL AND CONTROL. Cha

fairly smooth below gage defined riffle 150 feet below

EXTREMES OP DISCHARGE. Mi recorder, 6.26 feet at 3 p. m stage, 0.50 foot at 5 p. m. ! dam being closed).

1916-1926: Maximum < 1923; minimum discharge, and August, 1921, when g£

dam and highway bridge at Lowell, Penobscotmouth of river,

iles. 1, 1915, to September 30, 1926.right bank half a mile below highway bridge;

ade from cable near gage or by wading.nel rough and somewhat irregular above gage;

Control for low and medium stages at well- gage; for high stages not well defined, ximum stage during year, from water-stageMay 5 (discharge, 2,910 second-feet); minimumptember 30 (discharge, 19 second-feet; gates at

scharge recorded, 5,680 second-feet May 2, stimated at 5 second-feet several times in July is at dam were closed.


ICE. Stage-discharge relation affected by ice.REGULATION. Distribution of flow somewhat affected by use of storage reser

voirs above station. A small dam and mill half a mile above gage cause diurnal fluctuations in stage when mill is in operation, usually from May to November.

ACCURACY. Stage-discharge relation practically permanent. Rating curve well denned below 3,500 second-feet. Operation of water-stage recorded satis factory throughout year. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graphs. For days when fluctuation in stage was large the mean discharge of two-hour periods was used. Records good.

Discharge measurements of Passadumkeag River at Loweli, Me., during the year ending September SO, 1926

Date

Jan. 13.. ..................Mar. 12.. .................

Gage height

Feet "5.40-4.52

Dis charge

Sec.-ft. 366189

Date

Sept. 14

Gage height

Feet 2.561.67

Dis charge

Sec.-ft. 538224

° Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Passadumkeag River at Loweli, Me., for the year ending September SO, 1926

Day

1.. .............2 ------3 _- -- -.4-----.---.--.-.

« .....7... .......8-. .-.. ---------9 -10

11 ----- .12. 13 14 15

16 17 18 ---------19 ..-.20

21...............2223. .....24------.....25 ....

26- 27 28 .....29 ..SO 31

Oct.

303276260303416

516576630652775

850900900875900

900952

1,0101,010980

952900850775750

850900925952952925

Nov.

875825800725«7K

630580554630725

800825875925952

1,0401,1301,1601,160

1,1301,1001,1001,2001,200

1,2001,2001,2001,1501,000

Dec.

980980Qflft

960QOK

9801,1901,2801,1901,100

1,000920880840820

800775725700ft CO

630600

540520

500490480460450430

Jan.

420410

390QQfl

380370370370380

380380380390380

380360360340340

330330330330310

340330320310300310

Feb.

300300290290

290290290270270

270270270270260

260260250250250

240230230220210

200210200

Mar.

195

190185

185185200195195

190185185185

185180180180185

185190190190195

200200210210220220

Apr.

230240

26097ft

280300319345373

400428424408440

492488484484484

492520585725

1,040

1,4901,7601,8601,9302,070

May

2,2202,3802,6202,8602 OfJfl

2,7802,6202,5402,3802,220

2 (Yin1,9301,8601,6801,580

1,5201,4001,3101,2801,340

1,2501,2201,1301,0701,220

1,1901,1601,1601,1301,0701,040

June

980952925925Qfifl

850925850800

800825825825825

875900775952825

750536512520484

444396356332338

July

380428468492

500

504504500496488

484476460448444

432416392396416

424432444444436

412388373356338,297

Aug.

262184158201222

232235257265276

285288285282279

271262251249246

240232219217227

235243271312325315

Sept.

300288276268257

240235235238238

238238232222211

204206211217222

219214206204211

235356420294220

NOTE. Stage-discharge relation affected by ice Nov. 24 to Dec. 4, Dec. 10-16, and Dec. 22 to Apr. 7; discharge based on gage height corrected for effect of ice by means of two discharge measurements.

KENNEBEC EIVEE BASIN

Monthly discharge of Passadumkeag River at Lowell, Me., for the year endingSeptember SO, 1926


31

Month

April..... ................................May.__.« ................................

July......................................

The year. ____ _______ ...


Maximum

1,010 1,200 1,280

420 300 220

2,070 2,860

980 504

. 325 420

2,860

Minimum

260 554 430 300 200 180 230

1,040 332 297 158 204

158

Mean

765 951 784 358 258 193 662

1,740 734 434 252 245

618

Per square

mile

2.54 3.16 2.60 1.19 .857 .641

2.20 5.78 2.44 1.44 .837 .814

2.05

Run-off in inches

2.93 3.53 3.00 1.37 .89 .74

2.46 6.66 2.72 1.66 .96 .91

27.83

KENN1SBEC RIVER BASIN

MOOSEHEAD LAKE AT EAST OUTLET, ME.

LOCATION. At wharf at east outlet of lake at Moosehead, Piscataquis County.DKAINAGE ABE A. 1,240 square miles.RECOKDS AVAILABLE. April 1, 1895, to September 30, 1926.GAGE. Staff at end of boat landing. Two datum planes have been used at east

outlet. The first, or original datum is 1,011.20 feet above mean sea level and about 10 feet below sills of outlet gates; gage is read to this datum.

all gage readings published to and includingThe second datum, to whi 1911 have been referred, is

REGULATION. The lake is regu The dam at the east outlet being at elevations varyin

10 feet higher; that is, the zero is at the sill ofthe gates. As it is believed that low water may go below the sill of the gates (zero of second datum), gage heights since 1912 are published as read; that is, to original datum.

.ated to a capacity of 23,735 million cubic feet, is controlled by 39 gates, the sills of the gatesfrom 8.0 feet to 11.4 feet. At extreme low

stages the flow from the lake is controlled not by the gates but by a bar above the dam at an approximate gage height of 9 feet. The records show only fluctuations in the level of the lake and are used in the studies of regu lation of the lake and in ccmputing the natural flow of Kennebec River at The Forks.

COOPERATION. Record furnished by Hollingsworth & Whitney Co.

Daily gage height, in feet, of Moosehead Lake at eo,st outlet, Me., for the year endingSeptember 80, 1926

Day

I...... ...... ...2... ............3... ... .._4.. .............5 ........... .

6.... ..... ...7 ............8 ...9. ..... ...

10-.-.-.-..-.....

Octi

15.1

15.1

15.15

15.15

Nov.

16.95

17.0

17.0

17.25

Dec.

17.45

17.45

17.2

17.1

1

1

an.

fi.fi

fi 45

fi.35a. OK

Feb.

15.1

15.05

14.9

Id 7^

14.65

Mar.

10 A

13.3

13.15

10 f\

Ii§5

Apr.

n OK

11.2

n o

May

109

June

17.5

17.5

17.5

17 ^

July

17 K

17.45

n OK

17.4

Aug.

1 K QC

15.85

15.7

1 K C

Sept.

14.4

14.35

14. 2

14,15

14.05


Daily gage height, in feet, of Moosehead Lake at east outlet, Me., for the year ending September 30, 1926 Continued

Day

11 . 12...............13 .14...............15

16............... 17...... .........18...............19...............20...............

21...............22...............23... ............24... ........25... ............

26 ..........27... ...... __ ..28...... _ ......29. ___ ........30...............31 .........

Oct.

15.3

15.4

15.45

15.7

16.1

16.4

16.65

16.85

Nov.

17.4

17.5

17.5

17.4

17.4

17.5

17 P»

17.6

17.4

Dee.

17.1

17.1

17.0

17.0

16.95

16.95

1ft Q

16.75

16.7

Jan.

16.1

16.0

15.9

15.7

15.65

15.6

15.4

15.2

Feb.

14.5

14.35

~I4.~2"

14 1

13.9

1H 7

13. e'

Mar.

12.7

12.45

~12.~3~~

12.2

12.6

11.9

11.75

11.55

11.45

Apr.

11.1

11.05

11.0

10.95

10.9

10.9

11.05

11.25

11.4

May

14.6

15.1

~15.~65~

15.95

16.2

16.7

16.95

17.1

17.35

June

17.45

17.5

17.5

17.4

17.45

17.5

17 5

17.5

17.5

July

17.25

17.05

16.85

16.7

16.6

16.45

16.3

16.2

Aug.

15.4

15.3

15.15

15.05

14.9

14.8

14.75

14.65

14.55

Sept.

14.0

13.9

~13.~85

13.75

13.6

13.5

13.5

13.45

KENNEBEC RIVER AT MOOSEHEAD. ME.

LOCATION. At Canadian Pacific Railway bridge one-fourth mile below east out let dam on Moosehead Lake, half a mile northwest of Moosehead railroad station in Big Squaw Mountain Township, Piscataquis County, and 4.4 miles from Somerset Junction.

DRAINAGE AREA. 1,240 square miles (measured on map compiled by Maine Water Power Commission).

RECORDS AVAILABLE. October 1, 1919, to September 30, 1926.GAGE. Water-stage recorder on west bank 250 feet above railroad bridge in

stalled October 8, 1924; inspected by Frank Haggan. Chain gage on bridge used prior to this time at datum about 1.3 feet lower than present

DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Channel composed of large boulders and gravel.

Control is a series of rapids; practically'permanent.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage

recorder, 8.88 feet from noon to 10 p. m. November 17 (discharge by ex tension of rating curve, 12,700 second-feet); minimum stage, 2.23 feet from 1 p. m. April 23 to 11 p. m. April 24 (discharge by extension of rating curve, 156 second-feet).

1919-1926: Maximum discharge recorded, 13,400 second-feet (by exten sion of rating curve) May 12 and 13, 1920; minimum discharge recorded, about 62 second-feet April 7-15, 1923.

ICE. Stage-discharge relation not affected by ice.DIVERSIONS. Leakage through west outlet dam and occasional opening of

gates in this dam allow some water to pass down the west channel which is not included in records of flow at this station.

REGULATION. Discharge is regulated by operation of gates at Moosehead Lake; large diurnal fluctuations occur during log-driving season.

KENNEBEC RIVER BASIN

ACCURACY. Stage-dischargebetween 250 and 7,000 se satisfactory throughout ye to rating table mean daily stage the mean average

33

relation permanent. Rating curve well defined iond-feet. Operation of water-stage recorder ,r. Daily discharge ascertained by applying *age height. On days of large fluctuations in

discharge of 2-hour periods was used. - Records good.

The following discharge measurements were made:November 10, 1925: Gage hei ;ht, 2.91 feet; discharge, 441 second-feet.May 26, 1926: Gage height, 4.13 feet; discharge, 1,600 second-feet.

Daily discharge, in second-feet, of \Kennebec River at Moosehead, Me., for the year ending September 30, 1926

Day

1 . .... .2.... ....... 13 . ...... .....4 . ........5...............6 - .-.. .7... ............8 ............9........... _ .10....... .......11 12. _ .... __ ..13 14........ ____15 16 _17 18 __ .. __ .19 . ..20. 21... ____ .....22. ___ . .......23 24 25 26 27 28 29 . .30 31

Oct.

1,330 1,130 931 478 472515 594 840 858 525380 385 390 395 395395 390 395 395 400400 406 406 412 412412 412 418 430 430 710

Nov.

980 1,080 960 960 980990

1,010 660 460 466472 708

2,200 5,900 7,96010,200 12,400 10,200 5,610 4,1003,410 2,880 4,240 5,480 5,0003,700 3,600 3,900 3,930 2,990

Dec.

2,410 2,120 2,480 2,960 4,4308,000 7,760 2,390 1,070 3,0702, 570 2,260 2,260 2,260 2,2602,260 2,260 2,260 2,260 2,2602,260 2,260 2,260 2,260 2,4002,720 2,720 2,720 2,640 2,640 2,640

J

2, 2, 2, 2, 2,2, 2 3 3 2

I 2 22,2 22, 2 22 2 2 2 22 2 2 2 2 2

in.

560 640 800 800 720800 800 050 050 960960 880 880 880 800800 720 720 480 180180 180 410 560 560480 480 480 410 480 560

Feb.

2,480 2,480 2,560 2,640 2,6402,560 2,560 2,640 2,720 2,6402,640 2,560 2,560 2,640 2,5602,640 2,640 2,640 2,640 2,6402,640 2,640 2,720 2,800 2,8002,720 2,800 2,800

Mar.

2,880 2,960 2,960 2,960 3,0503,050 3,050 3,050 2,960 2,9602,960 2,880 2,880 2,960 2,8802,960 2,880 2,880 2,720 2,7202,720 2,640 2,480 2,410 2,3402,260 2,180 2,110 1,970 1,900 1,900

Apr.

1,840 1,780 1,780 1,710 1,7101,650 1,590 1,590 1,590 1,5301,470 1,450 1,400 1,370 1,3301,250 1,200 1,110 1,050 1,0501,030 886 459 156 166173180 184 190 198

May

208 219 231 251 268286 300 315 325 340360 370 375 380 385390 390 400 400 400400

1,100 430 442

1,230960 454 460

1,570 496 502

June

527 2,100 2,810 3,740 5,3602,790 4,240 6,250 6,120 5,2403,290 1,940

548 2,490 5,0607,960 4,230 3,030 3,340 2,8701,380 1,180 2,210 1,700 1,8301,450 1,920 1,720 1,690 2,140

July

3,020 2,430 2,140 1,970 2,0702,160 2,060 1,930 2,590 2,4701,900 2,110 2,260 2,720 2,8802,960 2,880 2,560 2,640 2,6402,800 2,800 2,880 2,800 2,7202,720 2,720 2,640 2,640 2,640 2,560

Augi

2,480 2,480 2,480 2,480 2,4102,410 2,340 2,340 2,180 2,1102,110 2,040 2,040 2,040 1,9701,970 1,900 1,900 1,900 1,840

762 815

1,710 1,710 1,6501,590 1,590 1,590 1,590 1,780 1,970

Sept.

1,710 1,630 1,530 1,530 1,5301,530 1,530 1,530 1,530 1,5301,530 1,530 1,530 1,650 1,9701,970 1,650 1,590 1,710 1,7101,780 1,840 1,900 1,710 1,5601,450 1,400 1,450 1,460 1,480

Monthly discharge of Kennebec River at Moosehead, Me., for the year endingSeptember 30, 1926

[Drair age area, 1,240 square miles]

Month

October. ................................

JanuaryFebruary ................................

April.. May..... _____ ..... __ . __ .....

July August September _ ...... __ . ................


Maximum

1,330 12,400 8,000 3,050 2,800 3,050 1,840'

1,570 7,960 3,020 2,480 1,970

12,400

Minimum

380 460

1,070 2,180 2,480 1,900

156 208 527

1,900 762

1,400156

Mean

530 3,580 2,810 2,650 2,640 2,690 1,100

472 3,040 2,530 1,940 1,6102,130

Per square

mile

0.427 2.89 2.27 2.14 2.13 2.17 .887 .381

2.45 2.04 1.56 1.301.72

Run-off in inches

0.49 3.22 2.62 2.47 2.22 2.50 .99 .44

2.73 2.35 1.80 1.45

23.28

At the west outlet dam two gales were open 14 hours on June 23NOTE. .four gates 13 hours on June 25, allowing at west outlet dam at high stages of Moc sehead gage does not include the total run-off fri mile " Regulation.")

, four gates all day June 24, andater to pass down the west channel; also leakage through gates

" Lake. For the above reasons the measured discharge at m the basin. The monthly discharge in second-feet per square

- - - - - (geee and the run-off in inches do not represent the natural run-off from the basin because of storage.

34 STJBFACE WATER SUPPLY, 1926, PART I

KENNEBEC RIVEK AT THE FORKS, HE.

LOCATION. Half a mile above highway bridge and 1 mile above mouth of Dead River at The Forks, Somerset County.

DRAINAGE AREA. 1,570 square miles.RECORDS AVAILABLE. September 28, 1901, to September 30, 1926.GAGE. Water-stage recorder on right bank half a mile above highway bridge;

inspected by S. C. Durgin and S. F. Durgin.DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Channel at bridge subject to slight changes; control

well defined by riffles a short distance below gage.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage

recorder, 8.30 feet at 4 p. m. November 17 (discharge, 15,500 second-feet); minimum stage, 2.24 feet at 2 p. m. April 24 (discharge, 766 second-feet).

1901-1926: Maximum stage recorded, 10.1 feet June 18, 1917 (discharge by extension of rating curve, 23,700 second-feet); minimum stage, 0.3 foot October 27, 1911 (discharge, 215 second-feet).

ICE. Stage-discharge relation seriously affected by ice.REGULATION. Flow regulated by storage in Moosehead Lake. During May,

June, July, and August the operation of Indian Pond for log driving causes a large diurnal fluctuation. Records of monthly discharge have been cor rected for storage in Moosehead Lake.

ACCURACY. Stage-discharge relation permanent; affected by ice. Rating curve well defined below 10,000 second-feet. Operation of water-stage recorder satisfactory throughout year. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of recorder graph, except for the period May 1 to August 9 when discharge integrator was used. Records good.

Discharge measurements of Kennebec River at The Forks, Me., during the year ending September SO, 1926

Date

Jan. 9-...--.....Feb. 10 ..Mar. 5 _ ....

Gage height

Feet -4.28"4.34"4.13

Dis charge

Sec.-ft. 3,2502,9603,310

Date

May 26 ... ...

Gage height

Feet 3.28O fiQ

Dis charge

Sec.-ft. 1,9501,180

Date

Sept. 30-. ...

Gage height

Feet 4.972.97

Dis charge

Sec.-ft. 5,3601,570

a Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Kennebec River at The Forks, Me., for the year ending September SO, 1926

Day

12 .........3 ............4...............6 - .

6... .... ........7... ............8-_ ....... ...9.... ...........

10... ...... ......

11 _ ..... _ ....12-j _-,..13-. 14 ............15 ........

Oct.

1,7301,4701,3501,120

940

860

9101,0701,230

1,020870850830970

Nov.

1,4701,600

1,470

1,470

1 6001*7301,730

1 6001,4101 7on

9.560

Dec.

3 1 on

2,7402 Q7A

3,1303 CAf\

6,4709,560

1,8702 1 Oft

2,9002,600<> nnft

2.500

Jan.

2 800

9 onn3,1003,100

S flftft

S ftftft

3,100

S oftft

3 1 An

3,1003,1003,1003.100

Feb.

2,7002,7002 7ftft

2,8002 Qf|A

2,800O Qflfl

2,9003,000

2,8009 Rnn2 QAn2.800

Mar.

3,0003,1003 0AA

3,300

3,3003 QAA

S Qftft

3,200

3 OAA

3,2003,1003 1 Aft

3.100

Apr.

2 0301,950

1,870

1,8001 73ft

1,7301,730

1,6601,6601 600l)6001.600

May

1,8002,5504,3006,4005,600

3,2002 7nn

2,6002,8002 nnn

2,6002,1502 Qftft

2.050

June

9502,100

3,9006,200

4,1006,7006,9006,300

4,5002,300

2 9504.700

July

3,3002,8002,5002,300o ocn

2,4502,4502,1503,500

2,0002,250O 1 KA

3.300

Aug.

2,7002,5503,1002,800

2,600

2,5002,020

2,1902,2809 9Sn

2,2802.280

Sept.

1,9501,6601 6601,950

2,0302,0302,0302,0302,030

2,0302,0302,0301,9502.110

Daily discharge, in second-feet, ending

>f Kennebec River at The Forks, Me., for the year September 80, 1926 Continued

EBEC RIVER BASIN 35

Day

16.... ...........17.......... .18...............19... ............20 ............

21.. .............22.... ...........23...............24...............25... ....... ....

26..........27... ........ ....28...............29 ............30........ .......31 ..........

Oct.

1,180

1,9501,870

1,5401,4101,2901,1801,230

1,6601,8701,7301,5401,3501,230

Nov.

11,300

13,9008,6905,430

4,9303 7Kft

4,0805,940S o/in

4,9304,2004,2004,4403,970

Dec.

2,5002,5002,5002,5000 KflA

2,500o KftA

2,5002,500o ftflA

2,8002,9002,9002,9002,8002,800

)<j<

i .<.

Fan.

,100200000

,900600

500500500fiOO700

700700fiOO600700700

Feb.

2,8009 Rflft2,8002,800o Qftn

2,8002 QAA

2,9003,0003 nnn

3,000

3,000

Mar.

3,1003,1003,1003,0000 Qflft

2,9002 CMV1

2,8002,7402, 640

2,5502 4-fiH2,3702,2802,1902,110

Apr.

1,4701,5401,4101,3501 9Qfl

1,2301,2301,120

8201,020

1,4101,5401,4101 3^fl

1,410

May

1,600i ivin1,7001,800

1,-1201,5801,6601,6800 AK(\

2,400

1,6401,6001,0001,000

June

8,9006,6005,0005,500

2,2002,1003,0502,5009 finn

2,3002,0502,1002,0002,450

July

3,1002,8002,8003,0002,700

2,8003,1503,1002,9002,900

2,9002,9503,1503,0502,9502,750

Aug.

2,1902,1102,1902,1102,110

2,1901,8701,6001,8001,800

1,7301,7301,6601,6601,7302,030

Sept.

2,1102,1101,6601,7301,800

1,8001,8702,0302,0301,800

1,6601,5401,5401,6001,600

NOTE. Stage-discharge relation affect rected for effect of ice by means of three charge from Moosehead Lake.

Monthly discharge of Kennebec River at The Forks, Me., for the year ending September30, 1926

[Dratiage area, 1,570 square miles]

i by ice Dee. 11 to Mar. 23; discharge based on gage heights cqr- liseharge measurements and by comparison with records of dis-

Month

October __________ _..

March.. _ _ ...April................ ..........

June.-.-.- ...... ..............July.......... .................

September __________ .

The year _____ ......

Maximu

1,9 15,1 9,5 3,3 3,01 3,3 2,0 6,418,91 3, 5(3,1 2,1

15,1

. Discharge in second-feet

Observed

n

>0 K) K) X) 0 X) !0 M) )0 K) K) 0

DO

Minimum

830 1,410 1,870 2,500 2,700 2,110

820 1,000

950 1,880 1,600 1,540

745

Mean

1,300 4,550 3,110 2,880 2,840 2,930 1,540 2,350 3,790 2,750 2,180 1,880

2,660


Mean

3,330 5,170 2,210 1,030

740 530

1,480 9,400 3,980 1,070

270 540

2,490

Per square mile

2.12 3.29 1.41 .656 .471 .338 .943

5.99 2.54 .682 .172 .344

1.59

Corrected run-off in

inches

2.44 3.67 1.63 .76 .49 .39

1.05 6.91 2.83 .79 .20 .38

21.54

KENNEB C RIVER AT WATERVILIE, HE.

LOCATION. At dam and mill Kennebec County, 2 miles

DRAINAGE AEEA. 4,270 squar RECORDS AVAILABLE. March GAGES. Rod gages in pond a

recorder installed in pond of discharge through the in the dam.

DETERMINATION OP DISCHAR( through logway, and thro 3,500 second-feet practica

of Hollingsworth & Whitney Co. at Waterville, above confluence with Sebasticook River.miles.

2, 1892, to September 30, 1926.ove dam and in tailrace of mill. A water-stage aove dam is used in connection with computations

v wheels, over the dam, and through the waste gates

E. Discharge computed from flow over dam, gh wheels of mill. When flow is less than about y all water is used through the wheels.


ICE. Stage-discharge relation not generally affected by ice; in most winters theentire flow passes through wheels of mill.

REGULATION. Numerous power plants and much storage above station; resultsnot corrected for storage.

COOPERATION. Records furnished by Hollingsworth & Whitney Co.

Daily discharge, in second-feet, of Kennebec River at Waterville, Me., for the year ending September 80, 1926

Day

1 .... -2., ....3.........4.........6.........

6 ......7 ... 8.........9.........10

11 ......12.........13.........14.........15.........

16.........17.........18.........19.........20 .

21 ......22 23 .....24 25 ....

26 27.........28. ...29 ....30. ..31 ....

Oct.

3,1503,0903,820

4,670

4,970K Ofin

4,6905,2406,500

16,8008,4807,9007,1206,380

8,30010, 50013, 20013,00011, 900

9,8309,2007,5207,9207 700

13,000io Kfin10,10010, 60010 3008,260

Nov.

6,640

6,4305,7704,750

5,7405,9406,880

11,30013, 700

11,600S QCfl

9,75025,800oft finfi

42, 00033,00027, 70010 4nn

14, 60013, 00011,300

13,000

19 7fift

10,60011, 10011, 3006,350

Dec.

7 3406,1607,0607,310

in ftflft

17 Qfift

21 6001A Qftft

6,880

7,8007,2305,430

5,1804,5606,0005,3605,590

4,5005,3505,0104 Q4.fi

4,5604,3404 2804*4904 480

Jan.

4,6804,6804,7604,5504,740

4,7405,0105,5305,6209 ion

4 9504,4805,0004,660

4,3403 qon

4,2805,2606,870

6,8505,8205,8104,2004 49fi

4,6804,6504,6104,6703,240

Feb.

4,0004,6504,3804,3804,180

3 Qfifi

S oon4,7704,1604,150

4,3604,3603,9802 000

3,7503,7103,7503»7103,510

2,9503,6103,9004,1103,890

3,850

o 7on

Mar.

0 QCft

4 3404,1004 0804,070

3,6503 D Eft

4,1104,0704 9Qfi

3,8803 QQ(\

3 fSKf\

3,3404 680

3,9203 Q4fi3 Qd.fi

3,7803 97O.

9 Rp>ft3,630

4 080O QOft

4,2805,020

4,5004,0103,930

Apr.

9 Q4A

4,0704,1103,3603,840

A IQrt

4,1804,1404,2704,580

7,2106,8406,2805,6906,630

7,9806 9006,8306,7506,130

5,7707,7607,950

16,80023,300

27,50094 7finin oflfi

14,80013, 600

May

14,40016,80023,800OK 4Afk

36,200

97 fififi99 Pififi

18,40017,00014,700

13,0009 7909^7609,720

10,200

9,2209 OAA

10,0007,7506,640

Q ssn8,6607,5709,470

11,300

8,90010, 3006,5006,430Q AKfl

8,130

June

5,3205,060fi 94O

6,5407 730

7 PIfift

8 CQn

10 60010 600

11,4008,260

6,3706,490

18,30015,0009,740

11, 70011,600

Ifi 9fift

7,1006,7305,4405,380

6,260

6,2005,0204,290

July

3 QA{\

4,1205,4403,7203,220

4,0703 9704 160O Q/lft

a oQfi

3,7604,2103,820

4,1604,1001,9804 8603^690

3,8604,2204,3203,2302,090

4,4203,9303,6403,5103,3402,740

Aug.

0 7QA

3,7803,2103,6103,780

3,6903 fiO.fi9 74.fi

4,3703,140

2,490S fiQft

3,1402,820

2,5003,0802,8103,2202,620

1,6901,7302,9602,4102,220

2,7702,4902,5801,3402,1003,120

Sept.

9 7fin2,7802,5902,2801,120

1,5309 ftin2,5102,4209 snn

2,380810

2,6202,5902,440

2,6302,9002,6401,4002,350

2,5802,5402,5202,6201,690

8832,6602,8402,6702,490

Monthly discharge of Kennebec River at Waterville, Me., for the year ending SeptemberSO, 1926


Month

November _____________ ...........

February ........ ..............................

July ...... ........................... .....

September. _ . __ . ___________ ....

The year .................................


Maximum

16, 800 42,000 26,400 6,870 4,770 5,020

27,500 36, 200 18, 300 5,440 4,370 2,900

42,000

Minimum

3,090 4,750 4,190 2,190 2,000 2,850 3,360 6,430 3,460 1,980 1,340

810

810

Mean

8,240 14,300 7,700 4,770 3,830 3,970 8,980

13, 400 8,070 3,720 2,830 2,310

6,860

Per square mile

1.93 3.35 1.80 1.12 .897 .930

2.10 3.14 1.89 .871 .662 .541

1.61

Run-ofi in inches

2.22 3.74 2.08 1.29 .93

1.07 2.34 3.62 2.11 1.00 .76 .60

21.76

NOTE. The monthly discharge in second-feet per square mile and the run-off in inches do not represent the natural flow from the basin because of artificial storage. The yearly discharge and run-off doubtless represent more nearly the natural flow, for comparatively little stored water is held over from year to year.

KENNEBEC RIVER BASIN

DEAD RIVER AT THE FORES, ME.

37

LOCATION. One-eighth mile above farmhouse of Jeremiah Durgin, \% miles west of The Forks, Somerset County.

DRAINAGE AREA. 878 square nciles.RECORDS AVAILABLE. September 29, 1901, to August 15, 1907; March 16, 1910,

to September 30, 1926.GAGE. Water-stage recorder on left bank; installed September 29,1923; inspected

by Mrs. H. J. Farley and £. F. Durgin.DISCHARGE MEASUREMENTS. Made from cable or by wading.CHANNEL AND CONTROL. Bed rDugh. Control practically permanent.EXTREMES OP DISCHARGE. ]V aximum stage during year from water-stage

recorder, 7.40 feet at 6 p. m. May 4 (discharge, 12,800 second-feet); minimum stage, 1.72 feet 8 a. m. to 2 ). m. August 12 (discharge, 156 second-feet).

1901-1907; 1910-1926: Maximum discharge recorded, 23,800 second-feet April 30, 1923 (stage of 8. Li feet determined from floodmarks). Minimum stage, 0.2 foot September 12, 13, and 17, 1918 (water held back by logging dams); discharge not determined.

ICE. Stage-discharge relation (seriously affected by ice.REGULATION. A number of dsms on lakes above; used for log driving during

May and June.ACCURACY. Stage-discharge re ation for low stages subject to change at infre

quent intervals. Rating curve well defined. Operation of water-stage recorder satisfactory throughout year. Daily discharge ascertained by applying to rating table mean daily gage height as determined from inspec tion of recorder graph, except for days of large fluctuation when the mean discharge of 2-hour periods or the discharge integrator was used. Records good.

Discharge measurements of Dead River at The Forks, Me., during the yearSeptember 30, 1926

Date

Jan. 8. .........Feb. 9 .

Gage height

Feet "4.49 "3.22

Dis charge

Sec.-ft. 604 405

Mar July

Date

4.. - 14.-

Gage height

Feet «3.36

2.22

Dis charge

Sec.-ft. 301 499

Date

July 15.. -------July 29. ..... .. .

Gage height

Feet 2.20 1.92

Dis charge

Sec.-ft. 495 286


Daily discharge, in second-feel, f Dead River at The Forks, Me., for the year ending September 30, 1926

Day

2 3 -.4 5 -

6 ---------7... ------------8 9... ...... ......10-

19

13 -------14 15

Oct.

640896896

1,0801,540

1,8101,5801,500

1,410

1,5601 640

1,7002.210

Nov.

1,5201,4201,3401,2501,170

1,1401,2001,4503,030

3,6702,730

5,7806.720

Dec.

1,2001,2001,1801,2001,230

1,4802,0102,2201,8801,420

1 14O

1,1001,000980960

Jan.

680660680700660

640600580580580

580580580580560

Feb.

450440440430420

410400410400400

400

390390370

Mar.

260270280290290

280280270270280

300

300270260

Apr.

560540520520520

500500500620720

720700700700700

May

3,2405,1308,18011,80011,200

10, 9009,0808,2007,3006,100

4,550

3,8505,0004,400

June

2,4502,3501,9402,5002,350

2,1002,2002,0501,6001,440

1,620

1, 920 .1,7602,100

July

778756712680640

581545527518527

600600545509500

Aug.

242267281274260

267260242254274

242236394491428

Sept.

923781670224184

167178194194200

194200194178172


Daily discharge, in second-feet, of Dead River at The Forks, Me., for the year ending September 30, 1926 Continued

Day

16-__---------_.-17.. ............ .18 -19 20 -----

21 22... ---------23 24 ... ..25

26 27 .-28. 29_-_ .. .30 -31

Oct.

3,2404,2605,7806,0405,260

3,9003, 0302,4402,0801,880

2,4402,9302,6302 1501,9101,690

Nov.

6,720

7,140

2, 6302,350

1,740-

1,6801 5601,440

1,250

Dec.

920900900900920

940900860840820

780

760

700

Jan.

540

500520

560580580

520

500490480

470460

Feb.

390380370390

390350310290260

270290300

Mar.

260

260

270290360

500

540520500

600560

Apr.

720720760800840

880940

1,0501,4502,600

4,6304,7603,900

2,930

May

5,2004,2504,2003,0003,650

4,3503,6503,6505,5002,700

5,1003,2503,2002,6002,1002,300

June

3,950

3,560

2,830

1,800944944992

1,2301,0701,000

884

July

482473464

428

419394386378346

323295288281260254

Aug.

530543490

401

415390344459455

562607664660670710

Sept.

]89323455446402

338288254260354

518600536473402

NOTE. Stage-discharge relation affected by ice Dec. 12 to Apr. 25; discharge based on gage heights cor rected for effect of ice by means of three discharge measurements.

Monthly discharge of Dead River at The Forks, Me., for the year ending September30, 1926


Month

July


Maximum

6,040 7, .580 2,220

700 450 600

4,760 11,800 4,020

778 710 923

11,800

Minimum

640 1,140

700 460 260 260 500

2,100 884 254 236 167

167

Mean

2,360 3,000 1,080

565 377 343

1,300 5,230 1,990

482 412 350

1,460

Per square mile

2.69 3.42 1.23 .644 .429 .391

1.48 5.96 2.27 .549 .469 .399

1.66

Run-off in inches

3.10 3.82 1.42 .74 .45 .45

1.65 6.87 2.53 .63 .54 .45

22.65

CARRABASSETT RIVEE NEAR NORTH ANSON, ME.

LOCATION. 3 miles above North Anson, Somerset County.DRAINAGE AREA. 351 square miles.RECORDS AVAILABLE. August 23, 1925, to September 30, 1926. November 3,

1901, to May 4, 1907, at site 1 mile above.OAGE. Water-stage recorder on left bank; read by W. C. McKenney. DISCHARGE MEASUREMENTS. Made from cable or by wading. CHANNEL AND CONTROL. Channel opposite gage is a pool at low stage in which

the velocity is slow, The control for this pool is a reef of ledge extendingacross the river 150 feet below gage. At high stages control is probably atupper dam at North Anson which is not in use.

EXTREMES OF DISCHARGE. Maximum stage during period August 23, 1925, toSeptember 30, 1926, from water-stage recorder, 10.57 feet at 1 p. m. May 3,1926 (discharge, 8,590 second-feet); minimum stage, 2.18 feet at 8 a. m.September 15, 1926 (discharge, 25 second-feet).

KENN

ICE. Stage-discharge relation REGULATION. Distribution of

above. ACCURACY. Stage-discharge rel ition

denned below 8,000 second

affected by ice. low affected by power plant two-thirds mile

factory except for short p table. Daily discharge asc gage height, except for da charge of 2-hour periods ( good.

Discharge measurements of Carr period August

probably permanent. Rating curve well -feet. Operation of water-stage recorder satis- ;riods indicated in footnote to daily-discharge rtained by applying rating table to mean daily s when fluctuations were large the mean dis-

r the discharge integrator was used. Records.

Date

1925 Aug. 20 Aug. 22 Sept. 12-. Oct. e.-. .-Oct. 14--... .._Oct. 16.-.- _ Oct. 19

Gage height

Feet 2.603.332.544.144.485.09

Dis charge

Sec.-ft. 62

21655

587802

1,2602,020 Feb. 9

>ate

L925 4 6

926

Gage height

Feet 8.129.78

"3.82a Q Oft

Dis charge

Sec.-ft. 4,7207,330

393

321206

Date

1926 Mar. 4 ...... .

July 13. July 28.

Gage height

Feet "3.96

4.423.252.912.32

Dis charge

Sec.-ft. 16169419511033.*

BBEC RIVER BASIN 39

bassett River near North Anson, Me., during the '0, 1925, to September 30, 1926

Stage-discharge relation affected by ice

Daily discharge, in second-feet, of period August %.

'arrabassett River near North Anson, Me., for the 3, 1925, to September 30, 1926

Day

1 2 ..........3 . 4.. ...........5 . .

6 .... 7.... .........8 .... ...9.... __ .. ...10

11 12- 13 14..... .....15......... ....

16 17-....- ___ ..18 19-.-..- ___ ..20

21_.._. _.22 23 24 25.... _ --....

26 27 -. .28. 29 30 31-

Aug.

7499104

1028881809678

Sept-

134110825273

6770.566464

65912007QO570

340385355270330

1,320840590500410

390345350265240

Oct.

190172235560580

570540495415940

1,5601,5801,560920810

1,1401,4402,6502,0501,540

1,060820600550680

2,2501,8801,4601,3601,120650

Nov.

580580550530490

500 \560 I700 2

2,500 12,050 ]

1,380 ]800

2,1505,3502,800

4,9004,1502,6501,8201,320

980900840885920

885614543662587

Dec.

505465485526693

240580510690350

050880700560480

410360350330320

310310310310310

310280300290290280

Jan.

290290280280270

270260250220240

230250240230230

230230230280390

410340290260260

230230220210190185

Feb.

185185185175185

190135190165180

175175175130180

175175175175185

120135150130135

150150105

Mar.

130145140155150

145140155170165

170160165135155

155150150145145

130140155170190

210210210220195190

Apr.

190210260330400

ocn

320330360410

500500480470620

700880

560500

560880

2,5104,8304,830

4,5303,3202,5101,8802,080

May

2,5103,5806,0807,6804,830

3,5802,5602,4602,0302,030

1,4701,5601,6001,6401,880

1,4301,5601,2701,1101,430

1,310850955

1,3901,270

1,310780801815815992

June

815773766662521

465465576850920

920510450396

1,270

2,4001,4301,1101,110955

706435386350311

278251251230226

July

223203189170157

150150148145174

307263197167154

143132126141132

122114124170128

1161031011148478

Aug

10310310314298

908296200158

130109858075

7073604757

5035555663

1141179092150112

Sept.

8891828272

7795877885

7148867266

68.115154126140

1171047785112

17916615013587

NOTE. Stage-discharge relation affected rected for effect of ice by means of four c and 18.

ay ice Dec. 10 to Apr. 22; discharge based on gage heights cor- scharge measurements. Discharge estimated Aug. 11, 14-16,


Monthly discharge of Carrabassett River near North Anson, Me., for the years ending September SO, 1925 and 1926


Month

1925

1925-26

December. ....................................

March ________ __________April __ ___ _______________ .....

June ... .._____. .__..______.___July .- .._._ .__._..____ __.______. . .

September ____________________

The year ................................


Maximum

1,320

2,650 5,350 3,580

410 190 220

4,830 7,680 2,400

307 200 179

7,680

Minimum

52

172 490 280 185 105 130 190 780 226 78 35 48

35

Mean

89.1 314

1,040 1,470

735 259 163 163

1,240 2,050

693 152 93.4 99.8

682

Persquare mile

0.254 .895

2.96 4.19 2.09 .738 .464 .464

3.53 5.84 1.97 .433 .266 .284

1.94

Run-off in inches

0.85 1.00

3.41 4.68 2.41 .85 .48 .53

3.94 6.73 2.20 .50 .31 .32

26.36

COBBOSSEECONTEE STREAM AT GARDINER, DIE.

LOCATION. At dam of Gardiner Water Power Co. in Gardiner, Kennebec County.

DRAINAGE AEEA. 220 square miles.RECORDS AVAILABLE. June 16, 1890, to September 30, 1926.GAGES. Staff in pond above dam and in tailrace of power house. There are

also gages to indicate water wheels gate and waste gate openings.DETERMINATION OF DISCHARGE. Discharge determined by considering flow over

dam, usually nothing except for a short time in spring; flow through two gates; flow through 39-inch Victor wheel installed in 1907; flow through 39-inch Hercules wheel installed in 1895; and leakage. Daily discharge computed from tables based on coefficients and experiments. The accuracy of these tables was verified by a series of weir measurements in August, 1921. Corrections have been made for leakage.

ICE. Stage-discharge relation not affected by ice.REGULATION. Numerous lakes in the basin are regulated by dams at the outlets.

Results npt corrected for storage.COOPERATION. Computation of daily discharge made by engineers of S. D.

Warren Co., Cumberland Mills, Me.

Daily discharge, in second-feet, of Cobbosseecontee Stream at Gardiner, Me., for the year ending September SO, 1926

Day

1 _ ............2 __ ...........3 4 _____ ...5 ..... .... .

6 7..... __ 8...... .... ... -9 _ ... 10 _ ............

Oct.

190.19019013

160

160160160160160

Nov.

13190190190190

19019013

210210

Dee.

260275290290290

13310310310310

Jan.

29029013

290290

29029029029013

Feb.

290290290290290

29013

290290290

Mar.

290290290290290

29013

345390390

Apr.

34529029013

290

290345400395465

May

1,7201,5801,300925540

29029029013

280

June

270270270270270

13270270270270

July

2702702701313

140270270270270

Aug.

13190190'

190190

19019013

190190

Sept.

19019019019013

190190190190190

ANDROSCOGGIN RIVER BASIN

Daily discharge, in second-feet, o year ending

Day

11 . 12. .... ..13 14. . .15... ....... .....

16 .17.. ....... 18. 19..... .20... ............

21 22,. _ _ _ . .....23. 24 25.. .

26...............27 28...............29........ .......30...............31 .

Oct.

13160160160160

16016013

160160

16016016016013

175190190190190190

Nov.

21021021021013

235260260260260

260ID

260260260

135

19013

260

Dec.

310310300290290

29029029029013

290290290290150

on13

290290290290

Jan.

290290290290290

29013

290290290

29029029013

9Qft

29029029013

Feb.

29029029013

290

290290290290290

13290290290290

29029013

Mar.

39539539513

395

390390395390390

13390390390395

DOC

13395400400

Apr.

7651,4401,6801,4401,600

1,8401,6501,4401,4601,440

1,3401,180945785

1,420

2,1401,9801,8401,8201,740

May

270270270270270

13270270270270

27027013

270270

2702702702701313

June

27027013

270270

270270270271)13

270270270270270

27013

270270270

July

27013

270270270

27024021013

210

210210210210200

13210210210210200

Aug.

19019019019013

190190190190190

19013190190190

19019019013

190190

Sept.

19013

175160160

16016016013160

160160160160160

13175190190190

41

Cobbosseecontee Stream at Gardiner, Me. t for the sptember 30, 1926 Continued

Monthly discharge of Cobbosseec mtee Stream at Gardiner, Me., for the year ending ~*eptember SO, 1926

[Drai lage area, 220 square miles]

Month

December. _______________ ..

February __________________ .March... __________________ .April....................................

June ___________________ .July.......-.......... ................

The year.. ____________ .


Maximum

190 260 310 290 290 400

2,140 1,720

270 270 190 190

2,140

Minimum

13 13 13 13 13 13 13 13 13 13 13 13

13

Mean

149 184 255 245 250 323

1,100 383 236 200 161 154

303

Per square mile

0.677 .836

1.16 1.11 1.14 1.47 5.00 1.74 1.07 .909 .732 .700

1.38

Run-off in inches

0.78 .93

1.34 1.28 1.19 1.70 5.58 2.01 1.19

. 1.05 .84 .78

18.67

NOTE. Monthly discharge in second-fset per square mile and run-off in inches do not represent the natural run-off from the basin because of sfc rage. (See "Regulation.")

ANDROEiCOGGIN RIVER BASIN

AHDROSCC

LOCATION. At two dams ofCounty.

DRAINAGE AREA. 2,090 squar RECORDS AVAILABLE. May 1 GAGES. Staff gages in pond ;

and mills. DISCHARGE. Computed from

formula with modified covariou^ wheels of the po\rated.

GGIW RIVER AT RUMFORD, ME.

Rumford Falls Power Co. at Rumford, Oxford

miles.1892, to September 30, 1926.

bove each dam and in tailrace of power station

discharge over the dam by use of Francis weir fficient, and the quantities passing through the er station and mills, which have been carefully


ICE. Stage-discharge relation little affected by ice.REGULATION. Storage in Rangeley system of lakes at headwaters of Andro-

scoggin River aggregates about 29.6 billion cubic feet. The stored wateris regulated in the interests of the water-power users above and below.Results not corrected for storage.

COOPERATION. Records obtained and computations made by Mr. Charles A.Mixer, engineer, Rumford Falls Power Co.

Daily discharge, in second-feet, of Androscoggin River at Rumford, Me., for the year ending September 30, 1926

Day

1.. ... -2.... ...........S......... ......4 _ ... .. .......5

6 -----7...- _ -.-..-..8 9 10

11 12 13 14 ...... ... ..15

16 .17 18 19 ..20

21 22 ... .23 .-.24. ..........25

26 27 28 29 30 31

Oct.-

2,1902,1402,3502,1803,200

2,9402,5902,5602,5502,880

2,4702,9702,7302,9503,240

4,0604,0104,4703,7003,190

3,0002,9002,9202,7602,810

5,200d. 9/in3,4703,4403,1803,090

Nov.

2,3402,9802,8302,8402,780

2,7802,9203,3407,4705,500

3,8303,2907,0209,3806,060

11,00013,00011,70010,6009,450

8,1906,0105,7204,6804,010

3,8203,3703,5002,3202,760

Dec.

3,1403,8504,1805,0506,870

9,3909,3005,9304,6802,740

2,7504,1503,8503,5003,100

3,4403,8003,7103,8103,470

3,4503,6103,5602,7203,110

2,9002,4502,6209 Qftfi

3,0303,140

Jan.

3,1103,0802,9803,0102,810

3,0002,900

2,5302,410

2,7709 7^n

2,650

2,7102,5402,8503,2003,630

3,1803,0202,9102,6702,900

2,8709 Qftft

2,8902,7702,6402,700

Feb.

2,9702,8302,6802,8302,830

2,7302,4402,9002,8402,930

2,8002,7102,8502,6702,940

2,7802,7002,8602,7902,750

2,5002,8202,8102,7902,630

2,5402,5402,370

Mar.

2,6102, 5102,5902,5602,560

2,5302,4202,6302,6202,520

2,5702,5902,5602,3902,700

2,6402,5502,5402,5502,540

2,3202,7702,8002,8802,890

3,0402,8802,5702,8502,7302,730

Apr.

2,7202,7302,6902,5302,930

2,7802,7502,6703,0403,330

3,3303,1803,3103,7304,160

3,5803,2302,7602,9302,920

3,2103,9506,5208,680

12,400

12, 8009,0006,9006,0606,180

May

6, 5508,940

15,20020,40017,500

13,40012,00011, 1009,7408,620

7,3706,8706,4406,5306,750

6,2106,8406,7106,6306,380

6,0304,6203,9705,4704,500

3,8703,6203,1803,3003,1203,630

June

3,6003,9403,9203,4902,680

2,4002,8102,8903,1603,070

2,8902,7302,2702,7906,880

10,8007,1104,4303,5402,800

3,0902,9202,7902,8509 7nn

2,7302,2602,8202,7602,890

July

2,9302,7402,3601,5301,820

2,5802,6502,4702,6203,870

2,8304,1503,5902,8202,730

2,5502,4302,4102,6002,420

2,3102,4002,3201,880

2,3902,2702,2302,3902,4902,540

Aug.

2,1402,6902,6302,7002,490

2,4702,1402,3702,7602,430

2,1002,2002,1802,1901,660

2,3902,2002,2102,1802,140

2,1101,6802,3002,1602,440

2,3102,2002,1601,9002,1802,010

Sept.

2,0002,0302,0309 nwi1,600

2,4802,2902,1602,110

2,1401 6002,2902,1102,060

2,0702,2002,2101,9802,330

2,1302,0602,0702,2302,330

2,1302,3302,1502,0902,170

Monthly discharge of Androscoggin River at Rumford, Me., for the year endingSeptember 30, 1926


Month

February __________ ... ___ . __ ......

May ____ . ______ .

July


Maximum

5,200 13,000 9,390 3,630 2,970 3,040

12, 800 20, 400 10,800 4,150 2,760 2,480

20, 400

Minimum

2,140 2,320 2,450 2,410 2,370 2,320 2,530 3,120 2, 2fiO 1,530 1, 6PO 1,600

1,530

Mean

3,110 5,520 4,010 2, 850 2,740 2,630 4,570 7,600 3,530 2,570 2,250 2,100

3,640

Persquare mile

1.49 2.64 1.92 1.36 1.31 1.26 2.19 3.64 1.69 1.23 1.08 1.00

1.74

Run-off in inches

1.72 2.94 2.21 1.57 1.36 1.45 2.44 4.20 1.89 1.42 1.24 1.12

23.56

NOTE. Monthly discharge in second-feet per sqifflre mile and run-off in inches do not represent the natural flow from the basin because of artificial storage. (See "Regulation.") The indicated minimum discharge usually occurs on Sunday, when water is held back by dams.

PRESUMPSCOT RIVER BASIN

MAGAIIOWAY RIVER AT AZISCOHOS DAM, ME.

LOCATION. At Aziscohos DamL Oxford County, 15 miles above mouth. DRAINAGE AREA. 233 square miles (measured on map compiled by Maine

Water Power Commission!.RECORDS AVAILABLE. January 1, 1912, to September 30, 1926. GAGE. Vertical staff in two sections, the lower attached to one of the concrete

buttresses of the dam and the upper one to the concrete gate tower. DETERMINATION OP DISCHARGE. Discharge determined from readings of gate

openings. Gates have been rated by current-meter measurements at a station 1 mile below dam.

REGULATION. The storage of about 9,593 million cubic feet is completely regulated, and the discharge corresponds to requirements of water users

the gates is planned to maintain as nearly as Berlin, N. H. Results not corrected for storage,

iputed and furnished for publication by Union

below. The operation of possible a constant flow

COOPERATION. Discharge corWater Power Co., Lewistpn, Me.

Monthly discharge of Magalloi River at Aziscohos Dam, Me., for the year ending \September 30, 1926


Month

November _ . __ .-.-......- ___ ..

March +April........ ...................... ...I.......May...........................................June ______________________ .July.........-.............,..-.......... ..


Maximum

163 1,410 1,110 1,520 1,590 1,560 1,220

254 1,500 1,410 1,450

965

1,590

Minimum

152 163 167 163 162 735 128 133 168 165 326 307

128

Mean

158 334 295 530 518

1,210 761 159 712 700

1,170 ' 626

598

Persquare mile

0.678 1.43 1.27 2.27 2.22 5.19 3.27 .682

3.06 3.00 5.02 2.69

2.57

Run-off in inches

0.78 1.60 1.46 2.62 2.31 5.98 3.65 .78

3.41 3.46 5.79 3.00

34.84

NOTE. Monthly discharge in second-feet per square mile and run-off in inches do not represent natural run-off from the basin because of storage. (See " Regulation.")

PRES^JMPSCOT RIVER BASIN

PRESUMPSCOT RIVER AT OUTLET OF SEBAGO LAKE, ME.

LOCATION. At outlet dam at Sebago Lake and hydroelectric plant at Eel WeirFalls, 1 mile below lake outlet, Cumberland County.

DRAINAGE AREA. 436 square miles.RECORDS AVAILABLE. January 1, 1887, to September 30, 1926. GAGES. On bulkhead of gatehouse at outlet dam, and in fore bay and tailrace of

power plant. 63435 30 4


DISCHAEGB. Prior to March, 1904, discharge was determined from records of opening of gates in dam; since March, 1904, flow from lake has been re corded by three Alien meters, one on each of three pairs of 30-inch Hercules wheels; wheels and recording meters checked by current-meter measure ments, brake tests of wheels, and electrical readings of the generator output. Water wasted at regulating gates is measured from records of gate openings and coefficients determined from current-meter measurements. Water taken from Sebago Lake for supply of Portland Water District and water leaking through reservoir dam, a total of about 1§ second-feet, not included in tables of discharge.

REGULATION. Sebago Lake (area, 46 square miles) is under complete regulation. Results not corrected for storage.

COOPERATION. Record in cubic feet per minute furnished by S. D. Warren Co.; computations on basis of cubic feet per second made by engineers of the Geological Survey.

Daily discharge, in second-feet, of Presumpscot River at outlet of Sebago Lake, Me., for the year ending September 80, 1926

Day

I... 2. ...... - 3 .... -4... ..... ... -5 __ - _

6 7 8.

10

11 12---. .13 14 IS

16 17 .18 19 20

22 23 24 25

26 27 28 28. ..30 31

Oct.

614612530230591

614612615646368

205630613614614

618253262597612

607608614369259

490618611614613578

Nov.

164492686647613

612366308584596

591593544304132

542593613614612

328111596610611

425

55991

Dec.

643614613589142

65523685700590

339627102652683

689651653733

650651654

139

9

659694653

Jan.

655629178755768

767752738723301

713766771748718

750321748

592

707137981

765761775694

Feb.

747712743713754

744222788795796

794794662393609

818791733746775

OQQ

794759782779

704

336

Mar.

762786778749811

742327708774772

748761742355751

725806739820731

268768749710664

674

142722737781

Apr.

711711666150646

644650628652497

47603584555549

576S52

564

488538558

86

473538538586f\Af\

May

553115603602616

652587487127739

636603588602656

98674

683620

593607118640646

6006026485907

June

642595662602614

116600595640585

646564144601606

678604599563269

600656558662

629

692584663

July

65864721175

133

489588578642204

234615563599598

596312302477

53959153916287

593472501616

299

Aug.

392518572651593

584207394500602

588579600408246

509583631554578

222211605606571

562557289345

501

Sept.

616619660

226

90548570594660

312178458559

672636331151480

572613647611387

192530554516674

SACO RIVER BASIN 45

Monthly discharge of Presumpscot River at outlet of Sebago Lake, Me., for the year ending September SO, 1926


Month

March.. _____________________

July .


Maximum

646 686 733 981 818 820 711 739 692 658 651 660

981

Minimum

205 919

137222 142 32 7

116 75

207 0

0

Mean

530 492 514 655 689 684 518 513 558 456 492 476

547

Per square

mile

1.22 1.13 1.18 1.50 1.58 1.57 1.19 1.18 1.28 1.05 1.13 1.09

1.25

Run-ofl in inches

1.41 1.26 1.36 1.73 1.64 1.81 1.33 1.36 1.43 1.21 1.30 1.22

17.06

NOTE. Monthly discharge in second-feet per square mile and run-ofl in inches do not represent the natural flow from the basin because of artifical storage. The yearly discharge and run-ofl doubtless represent more nearly the natural flow, for comparatively little stored water is held over from year to year.

SACO RIVER BASIN

SACO RIVER AT CORNISH, ME.

LOCATION. At highway bridge at Cornish, York County, half a mile below mouth of Ossipee River.

DRAINAGE AREA. 1,300 square miles.RECORDS AVAILABLE. June 4, 1916, to September 30, 1926.GAGE. Water-stage recorder on left bank 300 feet above highway bridge; in

stalled October 30, 1919; inspected by A. H. Guimont.DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Channel covered with sand and boulders; broken by

one pier at bridge.EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re

corder, 9.49 feet at 7 p. m.May 6 (discharge, 12,600 second-feet); minimum stage, 1.23 feet at 7.30 a. m. September 16 (discharge, 205 second-feet; water held back by dams).

1916-1926: Maximum stage recorded, 14.72 feet May 2, 1923 (discharge, by extension of rating curve, 23,000 second-feet); minimum discharge about 90 second-feet October 1, 1921 (water held back by dams).

ICE. Ice forms to a considerable thickness; stage-discharge relation seriously affected during most winters.

REGULATION. Distribution of flow somewhat affected by power development at Great Falls, 3J4 miles above gage.

ACCURACY. Stage-discharge relation shifts slightly at infrequent intervals. Rating curve well defined above 450 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage height as determined by inspection of recorder graphs. Discharge for days of large fluctuation is mean of 2-hour periods. Records good.


Discharge measurements of Saco River at Cornish, Me., during the year endingSeptember SO, 1926

Date

Feb. 2....... _ _.- ..-

Gage height

Feet ' 5.72"4.60

Dis charge

Sec.-ft. 1,5001.700

Date

Mar. 10 . . ..--.--. .......May 7.-.--

Gage height

Feet "5.00

9.22

Dis charge

Sec.-ft. 1,480

12,100


Daily discharge, in second-feet, of Saco River at Cornish, Me., for the year endingSeptember 80, 1926

Day

1 ....2.... .........3 4...............5.... ....... .6.. ......... ....1... ............8 9 10

12 10

14 15 16 17... ---------

19 -20

21 .22 23 24. 25 26 27. .28. 29. 30 31 .

Oct.

1,040998998938989

1,0201,0101,010

998929929998

1,0101,1301,2101,2201,2901,3701,5201,6201,4701,4101,3501,2501,3201,5701,7401,9002,0602,0602,010

Nov.

1,9001,8401,7401,6801,5701,5201,5201,5201,9002,7102,9703,040

3,9104,5005,0105,530c son6 2606,4506,260

5,350

4,2403,830

3,4603,1702,710

Dec.

2,4102,3502,4102,900

4,6705,350

5,8906,000

5,2004,670A Aftft

4,1004,0003,8003 Af)f\

3,0009 &4fl

2,7802,5902,470

2,2002 ftftfl

1,8001,5501,4501.450

Jan.

1,4001,4001,4001,450

1,5001,500

1,4501 4fifl1,4001, 350

1,300i oen

1,2501 7001,' 9009 mn9 Iftn

2,1002,1002,1002,0009 flflfl

1 800l!750

Feb.

1 7ftfi1,7001,6501,6501,650

1,600

1,6001 600

1,6501,6001,550

1,5501,500i ^flfii f^ftn

i f^nn1,500

i 4.p»fl1 4.P»fi

1,500i vifi1,450

Mar.

1,4501,4501,4501,4501,4001,4001,4001,4001,4501,4501,4501,4001,4001,4001,3501 ^Pvfi

1,3501,350

1,3501 QCfl

1,4001,450

1,6501,8001 9002 fiofl2.100

Apr.

2,1002,1002,1002,1002,1002,1002,2002,3002,4002,6002,7002,9703,0403,2403,760

4,080

4,2404,1604,500

6,0707,210

10,00010 60011,00011,200

May

10,60010,20010,00010,20011,20012,40012,00011,00010,0009,2008,4007,4006,8306,2605,7105,3505,1804 Sin4,5004,5004,4204 33Q4,330

4,0804,2403,9103,680o pin

2,9702.840

June

3,1003,1003,0002,9002,7002,6002,6002,6002,6002,6002,6002,6002,5002,4002,4002,4002,600

2,9002,8002,7002,7002,500

1,9601,7401,6201,5201,4101,310

July

1,2701,2401,2201,1001,0601; 0701,010

9801,1401,2401,3701,5701,5701,5701,4701,3301,2201,1201,1401,130

1,070998989963904895815719808

879

Aug.

879863863800839929954895887

1,020

1,0201,0201,060

781798780801790747717625580533

526531

490

676663

Sept.

667587570531610

606636657683680605671673642598599567540520520520520520540580600640644666674

NOTE. Stage-discharge relation affected by ice Dec. 10-12, 14-20, and Dec. 26 to Apr. 11; discharge based on gage height corrected for effect of ice by means of three discharge measurements. Stage-discharge relation affected by logs June 1-23; discharge based on gage heights corrected for effect of logs. Discharge estimated Aug. 22 and Sept. 18-26 by comparison with record of flow at West Buxton.

Monthly discharge of Saco River at Cornish, Me., for the year ending September SO,1926



Month

December----.-.--.-..-...... ._....

February ___ . ________ . _____ .. .....

April .- .

July. .-... .- ..... ......

September _ ... _ __ ._.._ ...._...... .....

Maximum

6,000

1,700

11,20012, 4003,1001,5701 060'683

19 4nn

Minimum

9291,5201,4501,2501,4501,3502,1002,8401,310

719490520

Mean

3,6003,4201,6301,5601,4904,8106,7102,4501,120

767603

2,460

Per square mile

1 002.772.631.251.201.153.70

1.88.862

.4641.89

Run-off in inches

3.093.031.441.251.334.135.952.10.99

.52

SACO RIVER BASIN 47

SACO RIVER AT WEST BUXTON, ME.

LOCATION. At hydroelectric plant of Cumberland County Power & Light Co.,at West Buxton, York County.

DRAINAGE AREA. 1,550 square miles. RECORDS AVAILABLE. October 19,1907, to September 30,1916; January 1, 1919,

to September 30, 1926.GAGES. Gages in pond above dam and in tailrace of power house. CHANNEL AND CONTROL. Crest of concrete dam 300 feet long. DISCHARGE. Flow over dam and through wheels of power plant determined by

means of hourly gage readings. ICE. Stage-discharge relation not affected by ice. REGULATION. Distribution of flow somewhat affected by power developments

above gage. COOPERATION. Records furnished by Cumberland County Power & Light Co.,

Portland, Me.

Daily discharge, in second-feet, of Saco River at West Buxton, Me., for the year endingSeptember 80, 1926

Day

1 ... ... ......2....... .. ..3...............4. .. ........5.... ... ........

6-...-..-.-.....7...............8 .9...............

10...............

11.. ......... ..12...............13...............14... ............15... ............

16 ....... 17... ............18... ............19 ............ 20 .. ..........

21 ...........22...............23... ...._....... 24... .........25

26...-...... .27. . .28 . .2930 31

Oct.

1,2001,3101,020

4361,180

1,3701,3301,2601,3601,260

5761,2001,3701,4401,610

1,6401,4201,0302,2402,120

1,9402,1002,0901,2201,200

2,1602,0502,2602,3802,4401,630

Nov.

1,2402,9302,2401,9502,180

1,7601,7501,1002,5202,490

2,5903,4703,7804,6004,400

5,2805,6405,9206,2006,300

6,2405,5705,6205,1704,920

3,7604,3804,0403,5003,860

Dee.

2,7902,9202,8903,0503,950

4,9206,1406,1506,1906,300

5,2405,5905,2205,0704,200

4,0904,0403,5203,1902,840

3,4202,9403,2003,0701,500

2,6802,0502,1601,9301,6401,920

Jan.

1,4801,9201,5502,3701,730

1,8002,2402,0601,8901,160

1,9201,4301,7101,7301,530

1,470864

1,8602, 310'2,560

2,7002,6002,5502,4503,350

2,6902,6102,6202,4301,9201,290

Feb.

2,5302,1502,0401,9801,700

1,6701,4002,1301,8001,830

1,7601,5101,760

9201,900

1,9801,9001,9801,9301,860

1,2202,1501,8901,6701,880

2,1101,7901,320

Mar.

2,4201,8802,0501,8401,820

1,7501,3201,9601,7201,790

1,7401,7301,780

9761,870

1,5001,4901,6101,6001,530

8421,5501,7401,7002,030

2,0501,7002,4603,6802,5402,410

Apr.

2,2102,4202,3602,3003,270

3,0003,3603,1503,6304,380

4,4304,4504,7305,2605,600

6,1806, 1505,9806,2806,030

5,8606,7907,9709,150

10,400

12,50012,60012, 70012,80012,400

May

12,10011,40011,60011,60012,100

13,30013, 30012,30011,10010,300

9,5508,7508,0007,2506,670

5,7606,0305,7005,2805,120

5,0804,7804,5405,1204,680

4,1404,3804,2803,9803,0203,070

June

3,3303,2603,0603,2002,830

1,8103,6602,8902,7002,720

2,7001,8501,8803,2102,580

2,4902,8603,4003,0502,620

2,9002,8702,6802,4602,100

1,7201,5102,3101,9601,400

July

1,3001,800

992669831

1,2001,1301,1801,2401,360

1,0702,4601,6301,4901,590

1,7601,4701,1801,7701,420

1,0101,4901,1201,1001,120

1,2601,350

7561,310

8621,090

Aug.

794799942

1,070921

1,0901,150

8391,0401,030

1,3701,3001,190

988969

1,0301,2701,210

934761

985361795598798

729717505251616665

Sept.

874742751

1,060565

484591848873824

1,0001,140

886838772

8651,070

154458527

617482768

1,060741

3851,020

757792792


Monthly discharge of Saco River at West Buxton, Me., for the year ending SeptemberSO, 1926


Month

October .......................................November __________________ ....

June _______________________July


Maximum

2,440 6,300 6,300 3,350 2,530 3,680

12,800 13, 300 3,660 2,460 1,370 1,140

13, 300

Minimum

436 1,100 1,500

864 920 842

2,210 3,020 1,400

669 251 154

154

Mean

1,540 3,850 3,700 2,030 1,810 1,840 6,280 7,560 2,600 1,290

894 758

2,850

Persquare mile

0.994 2.48 2.39 1.31 1.17 1.19 4.05 4.88 1.68 .832 .577 .489

1.84

Run-off in inches

1.15 2.77 2.76 1.51 1.22 1.37 4.52 5.63 1.87 .96 .67 .55

24.98

OSSIPEE RIVER AT CORNISH, ME.

LOCATION. At highway bridge in Cornish, York County, Ij4 miles above con fluence with Saco River.

DRAINAGE AREA. 455 square miles (measured on map compiled by Maine Water Power Commission).

RECORDS AVAILABLE. July 5, 1916, to September 30, 1926.GAGE. Chain gage attached to bridge; read by O. W. Adams.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Channel covered with sand and gravel; possibly some

what shifting; broken by one pier at bridge.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.60 feet

April 26 (discharge, 4,690 second-feet); minimum stage, 0.26 foot at 7 a. m. September 23 (discharge, 89 second-feet).

1916-1926: Maximum stage recorded, 8.76 feet April 30, 1923 (discharge, by extension of rating curve, 6,740 second-feet); minimum stage, 0.15 foot October 18, 1923 (discharge, by extension of rating curve, 66 second-feet).

ICE. Ice forms to considerable thickness and stage-discharge relation is seri ously affected during most winters.

REGULATION. Flow regulated by dam at outlet of Great Ossipee Lake. Power developments at Kezar Falls, 5 miles above gage, may have some effect on distribution of flow.

ACCURACY. Stage-discharge relation permanent. Rating curve well defined above 200 second-feet. Gage read to hundredths twice a day. Daily dis charge ascertained by applying to rating table mean daily gage height. Records good.

Discharge measurements of Ossipee River at Cornish, Me., during the year endingSeptember 80, 1926

Date

Dec. 30. ___ .Feb. 2... ....

Gage height

Feet »2.63»2.83

Dis charge

Sec.-ft. 690704

Date

Mar. 10.. -.--

Gage height

Feet "3.01

4.95

Dis charge

Sec.-ft. 605

3,290

Date Gage height

Feet 1.80

Dis charge

Sec.-ft. 684

se discharge relation affected by ice.

SACO RIVER BASIN 49

Daily discharge, in second-feet, of Ossipee River at Cornish, Me., for the year endingSeptember 30, 1926

Day

I......... ...23. - _ ....4...............5 .... ..... ...

6. ...........7 .... ..... ...8 .... ........9.... .......... .10

11 . . . 12....... ........13 14...............15. __ _

16...............17... ............18... .. _ ..19. _ ...........20 ....... .

21 22...... .........23...............24...............25... . __ .

26..... _ .......27...............28...............29 30 31. .

Oct.

470425360380402

402380360360360

320340380402425

448448360360402

360320276279448

448425380360402

Nov.

448495470470470

495470470470595

620680980

1,2601,580

1,7401,8201,8201,8201,820

1,7401,660

980980920

920860840820800

Dec.

780770740980

^1,050

1,7401,8201,9001,9001,740

1,2601,100

960860920

940900900860800

740740

720720

720700700700700680

Jan.

680680660660680

680680680660640

620660620620600

600600620720800

840860840840820

720700660640640660

Feb.

720700700700680

660640640640640

640640640640640

660680630680680

660660

640660

720580600

Mar.

600620620620640

640640640620600

620600600600580

540520500500500

500500520540560

580620660640600600

Apr.

620620640680700

700700700840920

940960

1,0501,1501,420

1,5001,5001,6601,7401,900

2,0602,1402,5903,4904,310

4,6904,6004,5004,3104,030

May

3,6703,4903,4003,3103,400

3,4003,2202,9502,7702,590

2,3202,0601,8201,6601,500

1,5001,5801,2601,1201,050

1,050920860920860

800860650545470425

June

448495570520448

425425520448680

650620570495495

680740740710650

620545495495495

495470402360320

July

296286279255265

276279282425470

470470470470448

425402402380380

360360320300286

268262255380402402

Aug.

380380402380402

495425402402402

380402402402380

380380380360340

268262272259252

230233233221208185

Sept.

124152132179165

182224202211221

214214227202190

140168202208233

179120120224214

211202208211214

NOTE. Stage-discharge relation affected by ice Nov. 28 to Dec. 1 and Dec. 12 to Apr. 14; discharge based on gage heights corrected for effect of ice by means of three discharge measurements.

Monthly discharge of Ossipee River at Cornish, Me., for the year ending September30, 1926


Month

December ____________________

April

July...........................................August


Maximum

470 1,820 1,900

860 720 660

4,690 3,670

740 470 495 233

4,690

Minimum

276 448 680 600 580 500 620 425 320 255 185 124

124

Mean

385 984 993 690 659 585

1,920 1,820

534 356 339 190

788

Per square mile

0.846 2.16 2.18 1.52 1.45 1.29 4.22 4.00 1.17 .782 .745 .418

1.73

Run-off in inches

0.98 2.41 2.51 1.75 1.51 1.49 4.71 4.61 1.30 .90 .86 .47

23.50

SURFACE WATER SUPPLY, 1926, PART I

MERRIMACK RIVER BASIN

PEMIGEWASSET RIVER AT PIYMOUTH, N. H.

LOCATION. At two-span highway bridge in Plymouth, Grafton County, three- fourths mile below mouth of Bakers River.

DRAINAGE AREA. 615 square miles.RECORDS AVAILABLE. January 1, 1886, to September 30, 1926.GAGES. Water-stage recorder on right bank; installed September 11, 1926.

Vertical staff gage in three sections; two lower sections 40 feet above bridge, upper section on bridge abutment, about 600 feet above, used prior to that date. Staff gage read and recorder inspected by A. F. Morse.

DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Right channel rocky and practically permanent; left

channel covered with fine gravel which shifts occasionally. Control section for low stages is gravel bed of river which shifts occasionally. At high stages banks are overflowed below bridge and control is somewhat indefinite.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 11.50 feet at 7 a. m. May 4 (discharge, 14,200 second-feet); minimum stage, 0.29 foot at 7 a. m. September 2 (discharge, 84 second-feet).

1903-1926: Maximum stage recorded, 18.17 feet April 29, 1923 (dis charge from extension of rating curve, 22,400 second-feet); minimum dis charge, 45 second-feet several times during August, September, and October, 1923.

ICE. River freezes over and stage-discharge relation is affected by ice usually from December to March.

REGULATION. Several small ponds on Bakers River and other tributaries but practically no storage regulation. At very low stages the paper mill at Livermore Falls is obliged to shut down several times daily and at these times the ponding of water affects distribution of flow at Plymouth.

ACCURACY. Stage-discharge relation not permanent. Rating curves well de fined below 9,000 second-feet and fairly well defined between 9,000 and 15,000 second-feet. Gage read to half-inches three times a day. Daily discharge ascertained by applying rating table to mean of three daily gage heights. Records fair.

Discharge measurements of Pemigewasset River at Plymouth, N. H., during the year ending September SO, 1926

Date

Jan. 28.........Apr. 24.........

Do.........

Gage height

Feet "2.25

7.326.86

Dis charge

Sec.-ft. 580

8,1607,690

Date

May 21

Gage height

Feet 3.631 flfi

.79

Dis charge

Sec.-ft. 2,980

378256

Date

Aug. 20. ........Do

Gage height

Feet 0.44.33

Dis charge

Sec.-ft. 12494


MEBEIMACK EIVEE BASIN 51

Daily discharge, in second-feet, of Pemigewasset River at Plymouth, N. H., /or the year ending September 80,

Day

1 . ...........2..... ..........3.. .............4...............5...............6...............7 ......... ...8...............9.. ..........

10..... .......11 .. ..........12...............13...............14...............15........ .......16 __ ...........17.... .........18. ...........19 ...........20... .......21...... ........22 ............23. ...........24.. .............25 ...

26. ...........27.-. ........28... ............29...............30. .......31. ..............

Oct.

475388728

1,5501,1801,1201,0701,020

9151,7901,6701,2401,5501,4801,7902,5502,4203,3002,0401,920

1,5501,2401,1801,0201,300

3,8102,3001,7901,6701,3601,070

Nov.

1,070965

865818915

1,0701,7906,0502,8002,0401,7903,4206,2003,3008,7805,1903,1702,5502,1701,9201,6701,5501,6701,0701,1201,0201,300

685

Dec.

8181,0701,0209 fun2,6705,6204,0702,4201,9201,360

9651,3601,240

8651,3001 360l',0701,020

QfJC

818818818

1,0201,1801,1201,070

Jan.

865728648

ErtQ

50850847<;47 <;47544541541 t\

415415415388388

1,3609 O4ft

728728

610575575<U18

508508

Feb.

508508508eno

540508508EftQ

508508508CftQ

508508508508508508K4.0

475508475AAZ

AAZ

445475475

Mar.

47<;445AAK

50847*.

50844547<;475

475

508445AAK

A.AK

415

388335AAK

445AAK

AfK

610685770770770728RAG

540

Apr.

540508508575

540540KAf\

1 3002*420

2,3001,6701 OftA

1,920

2,0401,6701 3001,2401,3601,550

6,3407,780

11, 300

9 *3Af\

3,940

4,070

May

4,0705,330

10,50013,200

6 4805,1904,4804 7603,8102,9202,8003,1703 ftcn

3 1703 17fi

2,5502 Q9ft

3,0503,0503,6802,8002,1702,4202,3001,6701,5501,4201,2601,1001,2001,360

June

1,4202,0402 (ldi\

1 f\f\(\

1,2601,1001 000

nee

1 3flfl1 1*.ft

1,000865865740

1,6103,0501,6701,2001,1501 IW>

780700660584516516

550516398

July

373348348ooe

325348398oneQ7«i

2,9202,9201,6701 n.nft

8207IVt

6225844<ut

348070

348302348348348271258245229298276

Aug.

97fi

27126797fi

229156142740622070

245171 IRA

167164156

171186

186160149160205224245258233201186

Sept.

186182

18617113645451632551645432526224522921621220817121220518615623334S700454373325276

NOTE. Stage-discharge relation aflected by ice Dec. 27 to Apr. 9; discharge based on gage height cor rected for eflect of ice by means of one discharge measurement, observer's notes, and weather records.

Monthly discharge of Pemigewasset River at Plymouth, N. H., for the year endingSeptember 80, 1926


Month

March .........................................

July..... . .... .......... ..... ............

September. .--..---.-..- _ _---___--___


Maximum

3,810 8,780 5,620 2,040

540 770

11, 300 13, 200 3,050 2,920

740 700

13,200

Minimum

388 685 818 388 445 335 508

1,100 398 229 142 136136

Mean

1,560 2,300 1,440

645 500 521

2,720 3,570 1,090

610 238 288

1,290

Persquare mile

2.54 3.74 2.34 1.05 .813 .847

4.42 5.80 1.77 .992 .387 .468

2.10

Run-ofl in inches

2.93 4.17 2.70 1.21 .85 .98

4.93 6.69 1.98 1.14 .45 .52

28.55

MEKKIMACK RIVER AT FRANK1IN JUNCTION, N. H.

LOCATION. At covered wooden bridge of Boston & Maine Railroad 1 mile below confluence of Pemigewasset and Winnepesaukee Rivers, at Franklin Junction, Merrimack County.

DRAINAGE AREA. 1,460 square miles.RECORDS AVAILABLE. July 8, 1903, to September 30, 1926.GAGE. Water-stage recorder on right bank 350 feet above railroad bridge; in

spected by H. F. Chapman, G. E. Abbott, and W. K. Heath.DISCHARGE MEASUREMENTS. Made from upstream side of bridge.

52 SUBFACE WATEB SUPPLY, 1926, PART I

CHANNEL AND CONTROL. Composed of coarse gravel and boulders; fairly per manent.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 15.12 feet at 3 a. m. April 26 (discharge, by extension of rating curve, 20,600 second-feet); minimum stage, 3.49 feet at 6.30 p. m. September 5 (discharge, 684 second-feet).

1903-1926: Maximum stage recorded, 23.5 feet April 30, 1923 (discharge, by extension of rating curve, 41,000 second-feet); minimum discharge, by extension of rating curve, 250 second-feet October 4, 1903.

ICE. Stage-discharge relation affected by ice.REGULATION. Flow affected by storage in Winnepesaukee, Squam, and New

Found Lakes and by operation of mills above station.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined. Recorder operated satisfactorily except for periods indicated in footnote to daily-discharge table. Daily discharge ascertained by use of discharge integrator. Records excellent for open- water period and good for period of ice effect.

Discharge measurements of Merrimack River at Franklin Junction, N. H., during the year ending September 30, 1926

Date

Oct. 9.. ........Feb. 2. .........

Gage height

Feet 4.89

"5.75

Dis charge

Sec.-ft. 1,9201,830

Date

May 27. ........

Gage height

Feet -5.39

5.57

Dis charge

Sec.-ft.

2,770

Date

Aug. 13..

Gage height

Feet 4.39

Dis charge

Sec.-ft. 1,370


Daily discharge, in second-feet, of Merrimack River at Franklin Junction, N. H. for the year ending September SO, 1926

Day

1 ............2 3 . ...... .....4... ............5--...--.----...6- . .......7...............8 ............9...............

10

11 12 . ...........13 ........14.... ......15........ ....16...............17 18-- . ...... .19 20 21 22 ........... .23 24 25 ............26 .27 28 29 30. 31.... ...........

Oct.

1,5901,5401,560

2,2902,210

2,0601,8602 1802,7602,3302,3002,460

3,300

3,6703,2802,860

2,3102,190

4,9304,360

2,7702,440

Nov.

1,9902,0002,030

1,900i QWI2,0802,2308,0205,4403,8303,1903,8309,4606,480

10, 300

4,7404,1003,750

3,0203,0609 77fl

2,5302,210

2,1901,830

Dec.

2,200

S oon

5,0806,840

6,0404,8403,640

2,870

2,4802 360

2,020

1,910

2,020

1,910

1, MO1,590

2,2502,2502,020

Jan.

1 8001.5901 3901,4901 3Qft

1 3901,3901 5Qfl

1 4Qfl

1,4901,590

1 5901,5901,5901 ^QO

3,580A oofl

2 K{\[)

2 1302,1309 fl9fl

1,8001,6901 fiQrt

1,8001,390

Feb.

1 8001 Qflfl

1,8001,8001 f^Qft1 4Qft

1,9102,130

2,020

1,9101,8001,9102 1302,3701,9101 8001*9102.020

1,8001,800

Mar.

1,8001 eflfi1,8001,9101,8001,800

1,690

1.690

1,690

1,5901,590

1,590

1,7201,8402,0402 0Qft

2 7202^6409 5Qfl

2,1902,170

Apr.

2,1502 1202,1602,160

2 ifin2 1 f\(\

3,0804,4204,8804,3604,0604,3005,700

4,500

3,700*J 7Qfl

3,940S QKfl

9,44013,80017 Qftfl

11, 8008,680

May

7,7408.300

12,60017 70013,600

o AQn

7,2006,2105,1004,6804,7004,6804,6004,6604,2004,000

4,550

4,580

3,3903,090

2,470

2,2802,1002,160

June

2,2802 5805,120

2,420

1,9601,9602,080

2,0401,9001,6701,6902 inn5,0503,420

2,2701 QAf)

1,790

1,6801,5801,4801,380

1,460

July

1,4501,2001,290

990960

1,3901,5903,3004,4404,2903,0202,500

1,6901,5601,3801,330

1,3301,3001,3101,300

1,170

1,2401,260

Aug.

1,0001,2001,1001,0601,120

1,2001,6001,7301,5601,4601,3301,3701,3501,1901,2001,2401,2001,2401,2101,150

9751,0801,160

1,1501,1401,210

9701,0801,020

Sept.

875

1.2301,130

875

1 2401,4801,4401,3301,4001,2001,1401,130

1,1601,1801,150

915955

1,0801,1201,1101,1801,2101,2801,460

1,3301,270

NOTE. Stage-discharge relation affected by ice Dec. 17 to Mar. 20; discharge based on gage height cor rected for effect of ice by means of two discharge measurements, observer's notes, weather records, and by comparison with records of streams in adjacent drainage basins. Recorder not in operation Feb. 25,26, Apr. 23, 24, July 2-4, and 8-16; discharge estimated from recorder charts, rainfall data, and comparison with records of streams in adjacent drainage basins.

MEREIMACK RIVER BASIN 53

Monthly discharge of Merrimack River at Franklin Junction, N. H., for the year ending September SO, 1926


Month

April..........................................

July


Maximum

4,930 10, 300 9,060 4,290 2,370 2,720

19,400 17,700 5,050 4,440 1,730 1,480

19,400

Minimum

1,540 1,830 1,590 1,390 1,490 1,590

2,120 2,100 1,380

960 970 875

875

Mean

2,660 3,870 2,890 1,870 1,880 1,890 5,880 5,530 2,130 1,670 1,220 1,180

2,720

Persquare mile

1.82 2.65 1.98 1.28 1.29 1.29 4.03 3.79 1.46 1.14 .836 .808

1.86

Eun-off in inches

2.10 2.96 2.28 1.48 1.34 1.49 4:50 4.37 1.63 1.31 .96 .90

25.32

NOTE. Monthly discharge in second-feet per square mile and run-off in inches, shown by the table, do not represent the natural flow from the basin because of artificial storage.

MERRIMACK RIVER AT MANCHESTER, N. H.

LOCATION. At dam of Amoskeag Manufacturing Co. in Manchester, Hills- borough County, 2 miles above Piscataquog River and 9.5 miles below Suncook River.

DRAINAGE AREA. 2,840 square miles.RECORDS AVAILABLE. January 1, 1924, to September 30, 1926.COMPUTATIONS OP DISCHARGE. Accurate record is kept of the discharge over

the dam and through the various wheels and gates.REGULATION. Flow somewhat regulated by storage in Lake Winnepesaukee and

other reservoirs; diurnal regulation by several power plants above.COOPERATION. Daily-discharge record furnished by Amoskeag Manufacturing

Co., reduced to three significant figures and rearranged for climatic year by engineers of United States Geological Survey.

Daily dii in second-feet, of Merrimack River at Manchester, N. H., for the year ending September 80, 1926

Day

1-... . ...2 3 4-... ...... .-5

6..... ........ -7 ... 8 9.. _ . .. .10

11 12 _________13 14 15

16 17.. ...18 . . _ .19.... .20

Oct.

1,5301,8601,2201,4201,910

2,4102,1301,8202,4502,390

2,3502,4702,4509 fi402,760

3,1403,1903,8404,1203,560

Nov.

1,9102,7402,430

2,230

2,280

1,7205,6607,160

5,3103,7605,1809,9808,950

8,70013,8009,6707,0005.760

Dec.

2,9402,9903,7404,5006,610

13,80018,00013,500

7,450

5,8606,1905,3403,4802,950

3,6903,3003,3103,2302,570

Jan.

2,1001,9801,9401,9002,040

2,0702,3202,1609 oon1,890

1,8401,8001,7001,8401,910

1,8901,4602,1605,0707.810

Feb.

9 4.002,3302,5102,6202,350

2,120

2,1402,1102,250

2,1402,1601,9601,8402,070

2,3402,1702,4002,5302.520

Mar.

2,6902,6302,5309 4<?n2,510

2,2502,0102,5602,6902,730

2,9202,9302,8303,5102,560

2,4502,5702,5702,4502.680

Apr.

6, ̂ 105,6705,2706,0507,080

7,0706,5806,320Q RfiO

12, 700

14,60014,10012,10012,50014,600

14,30012, 00010,90010,4009.550

May

15,40014,60018,20024,80020,800

14, 50011,9009,5708,1607,560

6,7906,6206,4305,7805,950

5,6005,3305,260

5,560

June

3,2202,7803,4303,8503,450

2,0802,8302,2502,3502,570

2,2402,1402,6102,0802,150

4,1604,9203,6902,9901.880

July

1,9301,4801,3801,020

907

1,6001,3901,3601,6201,750

4,2503,9103,3202,4902,400

2,1501,8202,1502,0401,370

Aug.

1,2301,2801,4201,1801,150

1,3701,3001,7301,8201,720

1,5601,4101,2401,2901,130

1,3401,1501,1801,3501,240

Sept.

951919840977

1,010

833934

1,3801,3301,360

1,2101,2101,0901,270

992

1,0901,1101,060

9701,070

54 SURFACE WATEK SUPPLY, 1926, PAET I

Daily discharge, in second-feet, of Merrimack River at Manchester, N. H., for the year ending September 30, 1926 Continued

Day

21.-. 22....--... .23 24 25.-..--..--.....

26 27 28 29 30 ..........31

Oct.

3,1002,7109 ^fifl

2,4602,000

4,1205,2204,1403,7403,4302,330

Nov.

4,4904,3104 5404^2803,820

2,470Q Af\(\

3,9802,8409 SQfl

Dec.

9 01 n3,0903,070

2,920

2,4801,8009 (\df\

2,0109 ^flfl

Jan.

8,0706,8904 0403,6703,590

3,3609 oon9 Qfifl

2,7302 4409 37fl

Feb.

9 9.4.0

2,3109 44fl

2,5102,520

9 E&ft9 A.d.(\

2,520

Mar.

9 44(13,2303,2603,5604,760

6,560a t\At\

6,9206,5106,340

Apr.

9,11011,40019,80025,70028,600

33,700

17,900Ifl fiAfl

May

5,5904,8204,0204,3204,000

3,5803,4003,1002,6902,3202,400

June

2,4302,0101,9402,0201,830

1,660930

2,1301,8101,600

July

1,5501,6001,7401,2901,140

1,5001,1401,2101,3401,4101,210

Aug.

932999

1,0801,0401,100

1,0701,010

990976887939

Sept.

921761

1,0101,220

968

1,1201, 130-l,33fr1,3401,250-

Monthly discharge of Merrimack River at Manchester, N. H., for the year endingSeptember SO, 1926

[Drainage area, 2,840 square milesj

Month

October., ...... ..... .. .. ... . .. ...

February __________________ ......

April _______________ _ .............

July.. ............. ............................


Maximum

5,220 13,800 18,000 8,070 2,620 6,920

33,700 24,800 4,920 4,250 1,820 1,380

33,700

Minimum

1,220 1,720 1,800 1,460 1,770 2,010 5,270 2,320

930 907 887 761

761

Mean

2,760 4,860 4,910 2,940 2,300 3,490

13,700 7,890 2,530 1,790 1,230 1,090

4,120

Persquare mile

0.972 1.71 1.73 1.04 .810

1.23 4.82 2.78 .891 .630 .433 .384

1.45

Run-off in inches

1.12' 1.91 1.99 1.20 .84

1.42 5.38 3.20 .99 .73 .50 .43

19.71

MERRIMACK RIVER AT LAWRENCE, MASS.

LOCATION. At dam of Essex Co., in Lawrence, Essex County.DRAINAGE AREA. Total of Merrimack River Basin above Lawrence, 4,663 square

miles; net drainage area, exclusive of diverted parts of Nashua and Sudbury Rivers and Lake Cochituate Basins, 4,452 square miles.

RECORDS AVAILABLE. January 1, 1880, to September 30, 1926.COMPUTATIONS OP DISCHARGE. Accurate record is kept of_ the flow over the

dam and through the various wheels and gates. This flow includes the water wasted into the Merrimack from the Nashua, Sudbury, and Cochitu ate drainage basins. Estimates of the quantities wasted from these basins are furnished by the Metropolitan Water & Sewerage Board of Boston and subtracted from the quantity measured at Lawrence to obtain the net flow from the net drainage area of 4,452 square miles.

DIVERSIONS. Practically the entire flow of the South Branch of Nashua River,. Sudbury River, and Lake Cochituate is diverted for use by the Metropolitan water distiict of Boston. .

REGULATION. Flow regulated to some extent by storage in Lake Winnepesaukee and other storage reservoirs. The low-water flow is affected by operation of various power plants above Lawrence.

STORAGE. There are several reservoirs in the basin. It is estimated that the- water surface is about 3.5 per cent of entire drainage area.

MERRIMACK RIVER BASIN 55

COOPEBATION. The entire record has been furnished by R. A. Hale, chief engineer of the Essex Co.; rearranged in form for climatic year by engineers of the Geological Survey. ,

Daily discharge, in second-feet, of Merrimack River at Lawrence, Mass., for the year ending September 30, 1926

Day

1 2 3 4 5 ._

6 7... ____ ....8 9 ..... ......10

11.. _ .... ......12 . 13 14 15

16 17 18 19 20

21 22 23....... ........24 25

26 27 28.. ... .......29 30 31 .

Oct.

2,4992,2601,365

1622,531

3,3143,2112,9732,5431,614

1,5172,8214,4423,2903,260

2,8713,1823,7714,5964,794

4,1993,8143,1322,2222,647

4,5015,8736,3145,1764,3783,610

Nov.

3,2294,3224,0663,1473,217

3,0691,8302,0243,2946,957

6,5565,3094,8587,2689,040

8,3719,662

10, 9537,7756,010

4,8283,5484,2223,9373,417

1,8503,0702,4422,6593,694

Dec.

3,3353,0723,7095,937

14,201

17, 11819, 08218,12814,64412,062

8,7937,4217,1127,1425,396

5,2055,2845,0284,0574,651

5,5575,6716,1205,6904,950

4,3273,6494,4754,2833,7983,528

Jan.

1,8553,0113,1074,3623,401

3,5183,8073,6983,1633,041

4,6503,6943,6103,0953,194

2,1752,1014,1955,620

10, 492

11, 98610, 7348,1846,1436,073

5,3725,1994,9494,0303,0942,956

Feb.

4,8164,0%3,7293,9043,704

2,4032,5744,5883,7403,706

3,4643,4282,5502,3674,384

3,8643,7503,6603,7493,194

4,3012,9765,0343,8773,991

4,3824,3194 (\A.<\

Mar.

5,2534, 713 ,5,0964,5444,750

3,7943,9366,0386,0025,5%

5,7715,6545,4755,754

5,2255,051

4,5644,8075,926

6,2667,7828,9129,665

11, 464

14, 77515,83514,83215, 17913,485

Apr.

12, 51111, 72511, 59011, 15213, Oil

14, 07213, 30112, 71214, 72919, 469

20,78921, 71719, 05717,24717, 574

18, 77417, 61615, 05613, 93713,537

12, 27211,92216, 21921,97226,072

31,98733, 67526, 98621, 33018, 327

May

17,12015,23516, 18719, 29022,354

19, 30914, 60212,14410,94410, 249

9,2218,3268,0628,0878,179

7,2977,9846,8608,2128,362

8,0218,3076,7526,5956,159

6,5375,3974,7213,8943,7463,236

June

5,5473,8504,4824,2055,370

4,0024,6754,2503,5233,580

3,5062,7943,2753,7503,678

3,7054,6096,3674,1153,285

4,5214,0163,2273,1582,989

1,817573

3,6413,4183,186

July

3,1772,6871,866

802361

3,1342,9332,8082,4831,556

3714,3194,7514,2503,611

3,0832,016

8952,9722,994

2,4562,0171,9471,661

384

2,4212,3722,3182,3232,3011,582

Aug.

2582,0632,2762,2272,137

2,0731,454

4772,2293,006

2,6772,4812,3851,590

369

2,1792,6242,4162,1322,070

1,315430

1,8562,0222,111

1,9572,0681,241

5631,9802,112

Sept.

2,0022,0691,9681,155

241

3661,8901,8451,9082,040

1,325492

2,0241,9551,915

1,8691,8831,232

1871,746

1,8281,8191,7781,7521,150

1731,6561,8261,8461,798

Monthly discharge of Merrimack River at Lawrence, Mass., for the year endingSeptember SO, 1926

Month

April .......

July..... - .

Mean discharge in second-feet

Measured at

Lawrence (total

drainage area, 4,663

square miles)

3,319 4,821 7,207 4,662 3,736 7,566

17, 678 9,722 3,770 2,350 1,832 1,524

5,684

Wasting into

Merrimack from

diverted drainage basins

(211 square miles)

45 71

185 91

191 229 167 83 20 6

28 6

94

From net drainage area of 4,452

square miles

3,274 4,750 7,022 4,571 3,545 7,337

17, 511 9,639 3,750 2,344 1,804 1,518

5,580

Per square mile of

net drainage

area

0.735 1.067 1.577 1.027 .796

1.648 3.933 2.165 .843 .527 .405 .341

1.26

Run-off

Inches

0.85 1.19 1.82 1.18 .83

1.90 4.39 2.50 .94 .61 .47 .38

17.06

Per cent of

rainfall

18.6 32.4 47.5 45.0 17.6 70.1

157.3 149.7 43.1 18.8 14.3 21.6

46.0

Rain fall in inches

4.59 3.67 3.83 2.62 4.73 2.71 2.79 1.67 2.18 3.25 3.29 1.76

37.09


SMITH RIVER NEAR BRISTOL, US. H,

LOCATION. At highway bridge in South Alexandria, 3 miles from Bristol, Graf- ton County.

DRAINAGE AREA. 78.5 square miles (measured on Walker map).RECORDS AVAILABLE. May 11, 1918, to September 30, 1926.GAGE. Vertical staff attached to downstream side of left abutment of highway

bridge; read by Lillian R. Bucklin.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Channel rough and covered with boulders; control of

ledge rock and boulders 130 feet below gage.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.55 feet at

8 a. m. April 25 (discharge by extension of rating curve, 1,430 second-feet); minimum stage, 0.54 foot at 5.45 p. m. September 3 and 8.30 a. m. Septem-

, ber 12 (discharge, 6.8 second-feet).1918-1926: Maximum stage recorded, 4.94 feet March 29 and 30, 1925

(discharge, 1,660 second-feet);'minimum discharge, 3.5 second-feet August 3 and 16, 1924.

ICE. Ice forms to a considerable thickness during winter; stage-discharge rela tion affected.

REGULATION. A few small mills above gage but no serious effect from their operation. Several small lakes in basin have little if any storage regula tion.

ACCURACY. Stage-discharge relation not permanent; affected by ice. Rating curve poorly defined. Gage read to hundredths twice daily. Daily dis charge ascertained by applying mean daily gage height to rating table. Records fair.

Discharge measurements of Smith River near Bristol, N. H., during the year endingSeptember 80, 1926

Date

Jan. 28- .May 20 . .

Gage height

Feet »2.07

1.37

Dis charge

Sw.-ft. 63

128

Date

Aug. 21_.. -.- .-Aug. 24

Oage height

Feet 0.56.61

Dis charge

Sec.-fl. 8.2

12.7


Daily discharge, in second-feet, of Smith River near Bristol, N. H., for the year endingSeptember 80, 1926

Day

1 ....2 ...3 4... ............5.. ___ .......

6...............7 ..8...............910. ...........

11 12 . ..13.. .............14... ............15...............

Oct.

OK

24304141

503940OQ

94

10089no

10391

Nov.

QC

80738075

7782138258178

140109468710530

Dec.

1551 18113428488

710574389272216

178

Jan.

5140363636

39,10

32240-1

242600

2828

Feb.

47575351

4847

5135

oe

35oo

3030

Mar.

2626232121

2119202123

23

24

18

Apr.

t)AA

216190190

166166

OOA

4.KR

one34600 ft

362514

May

514514596640514

330286247198O1A

234210

153164

June

7883787462

6860627466

63605763122

July

OC

262524OO

20on

262511

16410751AZ

41

Aug.

1491232117

14OC

175

1R

1133Oft

2218

Sept.

to

91

a ft

178.2

1241281Q

28

201O

OQ

21


Daily discharge, in second-feet, of Smith River near Bristol, N. H., for the year ending September 30, 1926 Continued

Day

16. .... .......17 18 19... ............20 .

21 . .22.... ...........23 . .24-. .........25 .

26 .. .27- 28 - .29...... .........30. ..31 .

Oct.

8410014411398

8475686487

319203144132114105

Nov.

488389272230190

144138134I'M

128

109120122124118

Dec.

287302302190128

114190190

244

28728724419012887

Jan.

2726

530488

38924412810075

476770575648

Feb.

3940395430

4757413223

233030

Mar.

1719171820

40101203%u.272

336336319302302272

Apr.

417362286286286

346640

1,0701,1701,380

1,220870684596554

May

153153153122142

12296949489

987874747373

June

198122807356

5050454138

3838403028

July

4231242322

1818171815

1414121415

Aug.

2428252836

2314161511

201921172017

Sept.

1917191517

1514132518

2342232421

NOTE. Stage-discharge relation affected by ice Dec. 15 to Apr. 8; daily discharge based on gage height corrected for effect of ice on basis of one discharge measurement, observer's notes, and weather records.

Monthly discharge of Smith River near Bristol, N. H., for the year ending September30, 1926

[Drainage area, 78.5 square miles]

Month

July


Maximum

319 710 710 530

59 336

1,380 640 198 164 175 42

1,380

Minimum

24 73 87 24 23 17

166 73 28 12 11 8.2

8.2

Mean

91.3 198 246 93.6 41.0

102 479 215 66.2 31.8 30.6 20.2

135

Per square mile

1.16 2.52 3.13 1.19 .522

1.30 6.10 2.74 .843 .405 .390 .257

1.72

Run-off in inches

1.34 2.81 3.61 1.37 .54

1.50 6.81 3.16 .94 .47 .45 .29

23.29

NORTH BRANCH OF CONTOOCOOE RIVER NEAR ANTRIM, N. H.

LOCATION. At village of North Branch, Hillsborough County, 4 miles northwestof Antrim and 6 miles above confluence with Contoocook River.

DRAINAGE AREA. 59.5 square miles (from Hitchcock map). RECORDS AVAILABLE. August 30, 1924, to September 30, 1926. GAGE. Slope gage on right bank 1,000 feet above stone-arch bridge. DISCHARGE MEASUREMENTS. Made by wading or from stone-arch bridge below

CHANNEL AND CONTROL. Bed composed of silt, sand, and stones. Control of boulders 100 feet below gage; probably permanent. Bank subject to over flow at extremely high stages.

EXTREMES OF DISCHARGE. Maximum stage recorded, 5.74 feet at 4 p. m. April 26 (discharge, 1,600 second-feet); minimum stage, 0.43 foot from 7 p. m. September 2 to 7 p. m. September 5 (discharge, 4.9 second-feet).

1924-1926: Maximum stage recorded, that of April 26, 1926; minimum stage, 0.40 foot September 26 and 29, 1925 (discharge, 4.0 second-feet).


ICE. Stage-discharge relation affected by ice.REGULATION. Operation of gates at Contoocook Pond in Stoddard affects stage

at gage slightly. There are several small storage ponds between Contoo cook Pond and the gage, but these do not affect the flow.

ACCURACY. Stage-discharge relation permanent except when affected by ice. Rating curve well denned below 50 second-feet and poorly denned above. Slope gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records fair.

Discharge measurements of North Branch of Contoocook River near Antrim, N. H., during the year ending September 30, 1926

Date

Jan. 26-..- Apr. 26

Gage height

Feet «1.94

5.71

Dis charge

Sec.-ft. 86

1,590

Date

Apr. 27 Do.

Gage height

Feet 5.095.01

Dis charge

Sec.-ft. 1,1201,120

Date Gage height

Feet 1.27

Dis charge

Sec.-ft. 45.2


Daily discharge, in second-feet, of North Branch of Contoocook River near Antrim, N. H., for the year ending September SO, 1926

Day

1 ..... ...... .2--. ... -3 ...... ......4 ... .... ... -5

6 ... .... ...7.. ... ..... .8 .9 .... . -10

11 . 12 13... ............14 - . 15

16 17 18 19 20

21. ---------22 -------23 24 25

26 27 28 29 30 31----. . .

Oct.

1211131415

1615151519

1917171616

1517181715

1413121115

333227211917

Nov.

1513111111

10101391

23

91

19<?Q

8096

172195195188180

15112511310185

7171859090

Dec.

8076'76107195

244302350*JAO

302

195158151

138110

1018071

6671767158

585453535145

Jan.

4437373432

3641373432

3231303030

282829

125

119119119113107

10110185807162

Feb.

6254525462

6258545250

4643424453

585854

66

6662625854

586666

Mar.

5853535452

454480101101

on80716662

6271858590

9690907662

fifi6666626266

Apr.

6662626262

7112580113113

101107119151172

203227227227211

211281605

1,1101,410

1,490975565465

May

350350405405377

350302244211180

158144132119

9076665858

6666524842

444341416685

June

8562485047

3527242424

2220182030

4542328024

2421202020

40342723

July

2118161616

1516161417

5858484538

3430274758

4235423530

97

2424

3438

Aug.

3538474138

3535353230

3032475238

303027

20

3835272015

1 O

121212

7.4

Sept.

6.45.54.94.94 Q

1291

191817

141219

1317

2126323535

3535353641

3632303030

NOTE. Stage-discharge relation affected by ice Dec. 22 to Mar. 28; discharge corrected for effect of ice by means of observer's notes and weather records.


Monthly discharge of North Branch of Contoocook River near Antrim, N. H., for the year ending September 80, 1926

Drainage area, 59.5 square miles]

Month

April.. ____________________ .....

July. .......................................

September ____________________


Maximum

33 195 350 125 66

101 1,490

405 85 58 52 41

1,490

Minimum

11 10 45 28 42 44 62 41 18 14 7.4 4.9

4.9

Mean

17.0 76.8

133 61.3 56.1 71.3

336 154 32.1 31.0 28.8 22.4

84.9

Per square mile

0.288 1.29 2.24 1.03 .943

1.20 5.65

'2.59 .539 .521 .484 .376

1.43

Run-off in inches

0.33 1.44 2.58 1.19 .98

1.38 6.30 2.99 .60 .60 .58 .42

19.37

NUBANUSIT BROOK NEAR PETERBORO, JST. H.

LOCATION. At highway bridge 1}£ miles above Peterboro, Hillsborough County.DRAINAGE ABEA. 54.3 square miles.RECOBDS AVAILABLE. November 18, 1920, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by F. E. Moore.DISCHABGE MEASTTBEMENTS. Made from bridge or by wading.CHANNEL AND CONTBOL. Control for low and medium stages formed by

boulders below gage; for high water at small dam about 1,000 feet below gage. Bed covered with small boulders; probably permanent.

EXTBEMES OF DISCHABGE. Maximum stage during year, from water-stage recorder, 4.70 feet at 8 a. m. April 26 (discharge, 600 second-feet); minimum stage, 1.48 feet at 9 p. m. August 15 (discharge by extension of rating curve, 0.4 second-feet; water held back by dams).

1920-1926: Maximum stage recorded, 5.4 feet at noon March 10, 1921 (discharge by extension of rating curve, 1,050 second-feet); minimum stage, that of August 15, 1926.

ICE. Ice forms along banks and on rocks below gage; stage-discharge relation affected.

REGULATION. Distribution of flow affected by operation of mills at West Peterboro half a mile upstream. There are several storage reservoirs on main stream and its tributaries above gage.

ACCTTBACY. Stage-discharge relation permanent except when affected by ice. Rating curve well denned between 2 and 500 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying mean daily gage height to rating table or by use of discharge integrator, with corrections for effect of ice during winter. Records good.

Discharge measurements of Nubanusit Brook near Peterboro, N. H., during the year ending September SO,

Date

Jan. 26..........Apr. 27-.---....Apr 27....-.-,

Gage height

Feet "4.78

4.17

Dis charge

Sec.-ft. 114379373

Date

Apr. 28... ......Apr. 28... ..... _

Gage height

Feet 4.18

3.00

Dis charge

Sec.-ft. 364S3]

91

Date height

Feet 2.993.00

Dis charge

Sec.-ft. 90QQ

Stage-discharge relation affected by ice. 63435 30 5


Daily discharge, in second-feet, of Nubanusit Brook near Peterboro, N. H., for the year ending September 30, 1926

Day

1 ___ . ___ ..

3...... ...... ...4 _ .. ___ ...5.. .............6.. .... ...7........ .... ...8....... ... -9 ...10 - 11 12 13-.... ..14 15 16 17 -18 19 20 21 22. __ . ____ ..23 24 25 26 27 ___ . ___ ..28 29. .30 31

Oct.

3541192.0404042402.35.43.23.539373736242.63942413736176.2

4343

454218

Nov.

2.642464042182.33.240443.54248384.1484246454822185845404.7

45325.0

49

Dec.

424446591562022151811501201179165707650444428124150697038486686106118116

Jan.

39234642324

1131

2230435256224701461924623253148656372796310

Feb.

11489789099505612273961029556156652505050303856505050523955

Mar.

7567646456448896103103103981018810396103103118150152208220300312368404305245225202

Apr.

190174368177158136139154202266287312281272308284269225242198170200336395505546411308220177

May

1501361411621451127029821121167552606253735950485233456144464439201.41.5

June

47434441202858524648422312434846495427

. 6.0

4944403942201.7

3939

July

3838211.01.0

38393939212.9

3938484140191.6

4241383539191,0

3740

434021

Aug.

0.5423535373716

1.1373537333815.9

3636373835221.0

4040374237181.1

4041

Sept.

384440181.51.92.01.71.71.71.71.7

41414239211.71.7

39383938241.21.4

3738392.6

NOTE. Stage-discharge relation affected by ice Dec. 26 to Mar. 30; discharge based on gage height cor rected for effect of ice on basis of one discharge measurement, observer's notes, weather records, and comparison with records of streams in adjacent drainage basins.

Monthly discharge of Nubanusit Brook near Peterboro, N. H., for the year endingSeptember 80, 1926


Month

December __ . __________ . _____

April.......... ......... . .... .........

July....... ... ....... ............August-... ....... ..........................

The year... _______________


Maximum

45 58

215 192 122 404 546 162 58 48 42 44

546

Minimum

2.0 2.3

121

15 44

136 1.4 1.7 1.0 .5

1.2

.5

Mean

29.1 32.1 84.5 43.1 65.1

154 257 70.1 37.7 30.4 29.1 2.13

71.0

Persqnare mile

0.536 .591

1.56 .794

1.20 2.84 4.73

' 1.29 .694 .560 .536 .392

1.31

Run-off in inches

0.62 .66

1.80 .92

1.25 3.27 5.28 1.49 .77 .65 .62 .44

17.77

SUCTCOOK KIVEB AT NORTH CHICHESTER, N. H.

LOCATION. 100 feet below highway bridge and 500 feet from Chichester depot, North Chichester, Merrimack County, 2J^ miles above mouth of Little Suncook River.

DRAINAGE AREA. 157 square miles (measured on topographic maps).RECORDS AVAILABLE. May 21, 1918, to September 30, 1920; June 15, 1921,"to

September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by Mrs. M. H. Gamage.DISCHARGE MEASUREMENTS. Made from bridge or by wading.


CHANNEL AND CONTBOL. Bed covered with gravel and other alluvial deposits.Low-water control at head of rapids 150 feet below gage; at high watercontrol is probably formed by crest of old dam near Epsom.

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stagerecorder, 8.20 feet April 26, 1926 (discharge, 1,920 second-feet); minimumstage, 0.82 foot at noon September 4 (discharge, 0.4 second-foot).

1918-1926: Maximum stage recorded, 13.0 feet April 7, 1923 (discharge,by extension of rating curve, 4,300 second-feet); minimum discharge, thatof September 4, 1926.

ICE. River is covered with ice for several months during winter. REGULATION. Storage has been developed at several points above Pittsfield.

Operation of mills at Pittsfield causes a large variation in discharge duringdays when mills are in operation.

ACCURACY. Stage-discharge relation permanent except when affected by ice.Rating curve well defined. Daily discharge ascertained from gage-heightgraph by use of discharge integrator except for periods of ice effect andmissing records. Records good.

Discharge measurements of Suncook River at North Chichester, N. H., during the year ending September SO, 1926

Date

Oct. 9..........Jan. 27. ........

Gage height

Feet 1.09

"4.24

Dis charge

Sec.-ft. 7.6

301

Date Gage height

Feet 2.341.84

Dis charge

Sec.-ft. 17284

Date

Aug. 19....

Gage height

Feet 1.54

Dis charge

Sec.-ft. 42.7

<* Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Suncook River at North Chichester, N, H., for the year ending September SO, 1926

Day

1... ............2... ...... ......3...............4 _ ....... __ .5 ...... ......6...............7...... ........ .8...............9....... ........10...............11 . .. .._12........ .......13...... .._....__14...............15 16 .17...............18 ...........19... .........20 . 21 ..........22 23... ...... ......24...............2526. . .27...............28...............29...............30 31 ..........

Oct.

831261210171212f;n56245444485552442043464749433038

13120011013812254

Novt

1744505449516321

13413253482304 in26327528091 f.210150948818413214442164134174280

Dec.

91 *;20019833556055550049531028025516414820521018819017211027

17019618025026019092134205220210

Jan.

8046174255184180180162146751181301421601221205012658551041534527024024020019018017013495

Feb.

225190180192196178881062101702002001449324028028526521021014418026018519520521092

Mar.

210210195200200186QO17023026026023519569166

20019518515666210280350455610540520490470460

Apr.

480495540620690685655640

1,1001,7401,420905765825980860745670755605580790

1,0001,3501,7001,8801,400985820740

May

635560525465420370325290235280280300370290280190205184162180160124135184124120142128761928

June

1621241481267217

1041161141161227217

1101341281481387320124120106128865611126116110

July

116116578.06.49811612412060121021161161148754

104928599995610343642448047

Aug.

9.03438343888259.03234324140308.039-38303038247.2

1614262830237.65.24.8

Sept.

9.09.02.01.42.43.44.42.82.84.48.06.02628272630204.018177.63.612184.43.0

107.24.0

NOTE. Stage-discharge relation affected by ice Dec. 28 to Apr. 9; discharge estimated. No gage-height record Dec. 25-28, Mar. 1-10,17,18, 30-31, Apr. 5-8, 23-25, and May 4-16; discharge estimated by compari son with discharge records of near-by streams.


Monthly discharge of Suncook River at North Chichester, N. H., for the year endingSeptember SO, 1926


Month

November. ___________________

April _____ . ................................

June _______________________JulyAugust _____________________September ..........-..-.-... ........ .......


Maximum

200 460 560 585 285 610

1,880 635 162 124 88 30

1,880

Minimum

8 17 27 46 88 66

480 19 11 6.4 4.8 1.4

1.4

Mean

52.5 141 239 194 190 266 911 251 101 72.9 27.5 10.7

204

Per square mile

0.334 .898

1.52 1.24 1.21 1.69 5.80 1.60 .644 .464 .175 .068

1.30

Run-off in inches

0.38 1.00 1.75 1.43 1.26 1.95 6.47 1.84 .72 .53 .20 .08

17.61

SOUHEGAN EIVEK AT MERKIMACK, H. H.

LOCATION. At head of Atherton Falls, 7 miles below mouth of Beaver Brook and \}i miles above confluence with Merrimack River, Hillsb,orough County.

DRAINAGE AREA. 168 square miles.RECORDS AVAILABLE. July 13, 1909, to September 30, 1926.GAGE. Water-stage recorder on left bank 350 feet above falls installed October

15, 1913; inspected by employee of W. H. McElwain Co.DISCHARGE MEASUREMENTS. Made by wading below falls at low stages or from

cable at high stages.CHANNEL AND CONTROL. Channel opposite gage is pool in which velocity is

very low. Control of this pool is rock ledge at head of Atherton Falls and is permanent.

ICE. Ice forms on control for short periods during some winters.EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage

recorder, 6.93 feet at noon December 5 (discharge, 2,590 second-feet); mini mum discharge, 13 second-feet from 11 a. m. to 5 p. m. September 9.

1909-1926: Maximum stage recorded, 11.82 feet April 8, 1924 (discharge by extension of rating curve, 7,120 second-feet); minimum discharge, that of September 9, 1926.

REGULATION. Flow slightly affected by operation of mills at Milford, 8 miles above.

ACCURACY. Stage-discharge relation permanent; not affected by ice. Rating curve well defined below 2,000 second-feet and extended above. Operation of recorder satisfactory except as noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table. Records excellent.

The following discharge measurements were made:October 8, 1925: Gage height, 2.26 feet; discharge, 40.8 second-feet.August 19, 1926: Gage height, 2.06 feet; discharge, 21.5 second-feet.

MEEEIMACK EIVEE BASIN 63

Daily discharge, in second-feet, of Souhegan River at Merrimack, N. H., for the year ending September 30, 1926

Day

1...:...........2...............3.. ... ....4... ............5.. __ .........

6 .. ...7_. .............8...............9...............

10..... ..........

11 . 12...............13 ......14...............15.... ...........

16..... ..........17....... ........18...............19....... ....20.... ...... ... ..

21. .... .......22...............23.... ...24...............25 ........

26 27 . .28...............29 30 31. ...... ...

Oct.

2341293Q21

40444Q4948

6060725862

6874846855

6874686657

311253192152142120

Nov.

888092QO

Od.

88887982

120

110104355

1 140cin

ccc

442339281

260204222195182

15516093Q323207

Dec.

188

2781,5402,410

9 ft^n

1,470950720ccn

KAf\

406367384416

24694fi216210ion

ojc424665dfii;470

2641581 CC

180 158

140

Jan.

130142122

142

170182145138108

112120130138114

IfU160170182185

182142142

138

140132170220190140

Feb.

199122148140 \A K

1OC

130100

120116

lift135135128132

122120142145172

182188160

170

195260246

Mar.

OOQ

99 c

2131Q9

165155OOK

380O7C

ORE

281250207207

91 1192185180198

OCfi

371575637980

i un1,260

890775775

Apr.

665580565720QCA

Q9fi80277 K

1,3601,680

1,5001,260

9801 f\Af\

1,230

980890775720610

565720

1,070OCA

1,170

1,230802610570520

May

A.V)

411393OKI

ooq

288264OKA

91 Q228

210222201

108

192246327256

239201152168155

14514013813210092

June

165

150130

Qfi104116120128

116100706284

1301401169872

vi62586666

7674627857

July

51fin54AK

46

3837Xi3330

35354Q

4542

4849484234

3639413938

312929293333

Aug.

3634371136

QQ37453331

2827272929

2930272624

2530272525

252733322724

Sept.

2521241920

2129181418

2524212218

16 18

182220

1718272327

3822203230

NOTE. Water-stage recorder not in operation Jan. 18 and Jan. 26 to Feb. 1; discharge estimated.

Monthly discharge of Souhegan River at Merrimack, N. H., for the year endingSeptember 30, 1926


Month

April ....................................

July.......-......-.:..........................

September .....................................

The year.. ___.._.______. __.__._


Maximum

311 1,140 2,410

220 260

1,540 1,680

452 165 60 45 38

2,410

Minimum

21 72

140 104 116 155 520

92 57 29 24 14

14

Mean

82.2 253 545 147 151 446 907 229 98.0 40.1 30.2 22.2

246

Persquare mile

0.489 1.50 3.24 .875 .899

2.65 5.40 1.36 .583 .239 .180 .132

1.46

Run-off in inches

0.56 1.67 3.74 1.01 .94

3.06 6.02 1.57 .65 .28 .21 .15

19.86

SOUTH BRANCH OF NASHUA RIVER BASIN NEAR CLINTON, MASS.

LOCATION. At Wachusett Dam, near Clinton, Worcester County.DRAINAGE AREA. 119 square miles 1896-1907; 118.19 square miles 1908-1913;

108.84 square miles 1914-1926. RECORDS AVAILABLE. July, 1896, to September, 1926.


REGULATION. Flow affected by storage in Wachusett Reservoir and other ponds. Beginning with 1897, the determinations of discharge have been corrected for gain or Iocs in the reservoir and ponds, so that the record shows approximately the natuial flow of the stream.

The yield per square mile is the'yield of the drainage area including the water surfaces. For the years 1896 to 1902, inclusive, the water surface amounted to 2.2 per cent of the total area; 1903, 2.4 per cent; 1904, 3.6 per cent; 1905, 4.1 per cent; 1906, 5.1 per cent; 1907, 6.0 per cent; 1908 and subsequent years, 7.0 per cent.

COOPERATION. Record furnished by the water division of the Metropolitan District Commission; rearranged in form of climatic year by engineers of the Geological Survey.

Yield and rainfall in South Branch of Nashua River Basin (Wachusett drainage area) near Clinton, Mass., for the year ending September SO, 1926


Month

April ....................

June... .......................July - . .-.-...--

September. __________

Total yield (million gallons)

1,474.6 2, 607. 2 5, 479. 7 3,207.0 2, 533. 8 6, 367. 5 7, 877. 3 2, 782. 1 1, 322. 7

871.9 850.2 656.2

36, 030. 2

Yield per square mile

Million gallons per

day

0.437 .799

1.624 .951 .831

1.887 2.416 .825 .405 .258 .252 .201

.907

Second-feet

0.676 1,235 2.513 1.471 1.286 2.920 3.738 1.276 .627 .400 .390 .311

1.403

Run-off

Inches

0.779 1.378 2.897

1.695 1.340 3.366 4.165 1.471 .699 .461. .449 .347

19.047

Per cent of rainfall

17.8 40.2 65.9 64.1 23.2

115.1 169.4 73.6 34.2 15.7 15.5 24.2

51.1

Rainfall in inches

4.37 3.43 4.39 2.64 5.77 2.92 2.46 2.00 2.05 2.93 2.90 1.43

37.29

SUDBURY RIVER AND LAKE COCHITUATE BASINS NEAR FRAMINQHAM AND COCHITUATE, MASS

DRAINAGE AREA. Area of Sudbury Basin from 1875 to 1878, inclusive, was 77.8 square miles; 1879-80, 78.2 square miles; 1881-1926, 75.2 square miles. Area of Cochituate Basin from 1863 to 1909, inclusive, was 18.87 square miles; 1910, 17.8 square miles; and 1911-1926, 17.58 square miles.

RECORDS AVAILABLE. Of Sudbury River, January, 1875, to September, 1926; of Lake Cochituate, January, 1863, to September, 1926. Records of rain fall have been kept in the Sudbury Basin since 1875 and in the Cochituate Basin since 1852, but the accuracy of the latter is considered doubtful previous to 1872.

REGULATION. The greater part of the flow from these basins is controlled by storage reservoirs operated by the Metropolitan Water and Sewerage Board. Lake Cochituate, which drains into Sudbury River a short distance below Framingham, is controlled as a storage reservoir for the Metropolitan waterworks system. In the Sudbury River Basin the water surfaces exposed to evaporation have been increased from time to time by the construction of additional storage reservoirs. From 1875 to 1878, inclusive, the watei surface amounted to 1.9 per cent of the total area; from 1879 to 1884, to 3 per cent; 1885 to 1893, to 3.4 per cent; 1894 to 1897, to 3.9 per cent; 1898 and subsequent years, 6.5 per cent.

MERRIMACK RIVER BASIN

DETERMINATION OF DISCHARGE. In determining the run-off of the Sudbury and Cochituate drainage areas the water diverted for the municipal supply of Framingham, Natick, and Westboro, which discharge their sewage outside the basins, is taken into consideration; the results, however, are probably less accurate since the sewage diversion works were constructed.

Water from the Wachusett drainage basin also passes into the reservoirs in the Sudbury Basin and must be measured to determine the yield of the Sudbury Basin; the small errors unavoidable in the measurement of large quantities of water decrease the accuracy of the determination of the Sud bury water supply during the. months of low yield for years subsequent to 1897.

COOPERATION. Records furnished by the water division of the Metropolitan District Commission; rearranged in form of climatic year by engineers of the Geological Survey.

Yield and rainfall in Sudbury River Basin near Framingham, Mass., for the year ending September SO, 1926


Month

April........ ..................

July ........-. . .........


817.7 1, 308. 8 4, 351. 7 2,011.9 2,086.6 6, 354. 5 4, 341. 7 1, 678. 1

234.3 -159.0

542.2 -255. 8

23, 312. 7


Million gallons per

day

0.351 .580

1.867 .863 .991

2.726 1.927 .720 .104

-.068 .233

-.113

.849

Second-feet

0.543 .898

2.888 1.335 1.533 4.218 2.982 1.114 .161

-.106 .360

-.175

1.313

Run-off

Inches

0.626 1.001 3.330 1.539 1.596 4.863 3.323 1.284 .179

-.122 .415

-.196

17.838


14.2 31.6 57.8 51.2 27.0

150.6 150.5 56.1 11.2

-3.8 7.5

-14.0

42.8

Eainfall in inches

4.41 3.17 5.76 3.00 5.92 3.23 2.21 2.29 1.60 3.18 5.51 1.40

41.68

Yield and rainfall in Lake Cochituate Basin near Cochituate, Mass., for the year ending September SO, 1926


Month

October ________ ........

February. _______ . .....

July..... ......................August _________ . ---

The year ......... ......


196.7 253.6 911.4 469.2 783.0

1, 455. 7 861.9 430.4 110.6 36.6

251.6 -1.7

5, 759. 0


Million gallons per

day

0.361 .481

1.672 .861

1.591 2.671 1.637 .790 .210 .067 .462

-.003

.897

Second-feet

0.558 .744

2.588 1.332 2.461 4.133 2.532 1.222 .324 . 104 .714

-.005

1.388

Run-off

Inches

0.64 .83

2.98 1.54 2.56 4.77 2.82 1.41 .36 .12 .82

-.01

18.84


14.3 24.9 54.8 49.4 45.4

135.8 119.6 54.6 22.8 35.0 17.9 -.4

45.5

Rainfall in inches

4.52 3.335.44 3.11 5.64 3.51 2.36 2.58 1.59 3.42 4.59 1.32

41.41


PROVIDENCE RIVER BASIN

BLACKSTONE RIVER AT WORCESTER, MASS.

LOCATION. 150 feet below highway bridge on Webster Street, Worcester, Worcester County, three-quarters of a mile above mouth of Tatnuck Brook and 1 mile below Kettle Brook.

DKAINAGE AREA. 31.5 square miles, including 6.3 square miles from which water is diverted to water-supply system of Worcester (measured on topographic maps).

RECORDS AVAILABLE. August 14, 1923, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by H. C. Merritt.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Channel smooth, subject to growth x>f aquatic vegeta

tion during summer. Control for low stages at riffles 200 feet below gage; at high stages control is in vicinity of railroad bridge, half a mile below gage.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 3.60 feet at 12.30 p. m. March 25 (discharge, 400 second-feet); minimum stage, 0.35 foot from 2 a. m. to 2 p. m. September 25 (discharge, 4.8 second-feet).

1924-1926: Maximum discharge recorded, 740 second-feet April 7, 1924; minimum discharge, 2.2 second-feet October 13, 1924, and August 5, 1925.

ICE. At times of very low temperature ice forms along banks of river; stage- discharge relation not affected.

DIVERSIONS. Water is diverted from 7.0 square miles as a part of the water supply of Worcester. During low and medium stages practically the entire flow from this area is diverted.

REGULATION. Operation of several storage reservoirs above gage affects dis tribution of flow; diurnal variation in stage is also caused by operation of small mill 200 feet above gage.

ACCURACY. Stage-discharge relation not permanent. Rating curve well defined below and fairly well above 20 second-feet. Operation of water-stage recorder satisfactory except for periods indicated in footnote to daily- discharge^table. Water diverted into the water-supply system of Worcester is measured by Venturi meters. Table of daily discharge shows flow past gage without correction for diversion. Daily discharge ascertained by apply ing mean daily gage height by inspection to rating table. Records good.

Discharge measurements of Blackstone River at Worcester, Mass., during the year ending September SO, 1926

Date

Oct. 14.. .......Nov. 10. .....

Gage height

FeetO CfJ

.632.26

Dis charge

Sec.-ft. 8.3

Date

T)(wi K

Gage height

Feet 2.30.99

1.08

Dis charge

See.-ft. 134.023.926.8

Date

Apr. 21.. .......July 27.. .......

Gage height

Feet 1.14.55.48

Dis charge

Sec.-ft. 35.59.26.4

NOTE. Eecorder not in operation Oct. 3-4 and Sept. 4-7; daily discharge estimated.

THAMES RIVEK BASIN 67

Daily discharge, in second-feet, of Blackstone River at Worcester, Mass., jor the yearending September 30,

Day

1.. ______2.... __ .......3.. .............4... _______5....... ___ ...

6... . ___7.... ...........8...............9.. ........ _ ..10

11. 12. .. _ .....13.. .............14 ______ .. ...15...... ......

16...... ........ .17.. 18...............19...............20...............

21...............22..... ..........23...............24...............25. _____ ... _

26.. ..........27.. ..........28 29.... ......30. ..........31...............

Oct.

1010128.89.3

108.88.39.8

15

127.48.69.59.8

9.39.59.88.67.2

7.87.07.6Q Q

18

1717

141414

Nov.

131219

ft

12121212

119 0

253331

4230373823

1519161212

1112161513

Dec.

13

30118

119108

766007

2931222922

3135302721

42584507

25

19191Q

222323

Jan.

2114141415

2425221918

1518242218

181524

116102

9185

01

21

302820252217

Feb.

201Q

23OK

25

191624181Q

2026261924

2218233232

2021203642

2741Eft

Mar.

9512664Eft

68

5356

210115108

10396626990

76707180

104

113128160125

1491271191149397

Apr.

125131106

1OK

111106113170172

121112

958583

765954KA

40

41

33i<;36

8173fid

5856

May

4422484.9

36

2830271722

2421242622

2478807759

3028241Q

20

2418182214» K

June

192114109.0

9.5111211g Q

107.88.18.19.0

1110109.38.6

116.67.87.08.3

1015131110

July

13139.58.67.6

7.87.68.38.88.3

7.26.86.67.06.8

8.11810108.6

8.68.68.8

1313

128.8

109.88.68.8

Aug.

8.89.38.80 Q

8.3

7.87.47.48.6

23

31128.18.18.3

, 9.512141414

121212

9.5

9.01213128.86.2

Sept.

6.07.2

141911

7.47.67.67.69.0

10107.86.86.2

11126.66.0

11

8.15.85.35.15.0

5.36.06.2

299.5

Monthly discharge, in second-feet, of Blackstone River at Worcester) Mass., for the year ending September 30, 1926


October __________________________

December _________________________

April _____________________________

June. ___________________________July................ ....................................

September ___________________ ..........

The year ______________________

Maximum

1842

12611656

2101728021183129

210

Observed

Minimum

7.09.8

13141650249.56.66.66.25.0

5.0

Mean

10.718.042.331.825.5

10185.631.510.69.41

11.28.97

32.3

Corrected

charge «

13.625.349.841.435.7

11198.345.321.420.821.819.4

42.0

« Corrected for diversion to water supply of Worcester, but not corrected for storage.

THAMES RIVER BASIN

QUINEBAUG KIVER AT JEWETT CITY, CONN.

LOCATION. 1,000 feet below railroad bridge and 570 feet below outlet of canal from Slater Mills (mouth of Pachaug River); Jewett City, town of Griswold, New London County.

DKAINAGE ABBA. 712 square miles (measured on topographic maps).RECOBDS AVAILABLE. July 17, 1918, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by Theodore Da vis.

68

DISCHARGE MEASUREMENTS. Made from cable.CHANNEL AND CONTROL. Channel of gravel and alluvial deposits. Control for

low stages is fairly well defined riffle a few hundred feet below gage, at high stages control is at head of rapids 2% miles below gage.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 11.67 feet sometime during period March 6-10 (discharge, 5,620 second-feet); minimum stage, 3.58 feet at 10 a. m. September 25 (discharge, 41 second-feet; water held back by dams).

1918-1926: Maximum stage, about 16.3 feet during high water March 14-19, 1920 (discharge by extension of rating curve, 10,800 second-feet); minimum discharge, 30 second-feet August 23, 1919 (water held back by dams).

ICE. Stage-discharge relation not affected by ice.REGULATION. Flow of Pachaug River, which drains 59.7 square miles and enters

Quinebaug River through the canal 570 feet above gage, is under almost complete regulation. Numerous small reservoirs and power developments on the main river and tributaries above station also affect distribution of flow. Operation of mills at Jewett City causes a large variation in discharge.

ACCURACY. Stage-discharge relation practically permanent; unaffected by ice. Rating curve well defined above 200 second-feet. Operation of water-stage recorder satisfactory except for periods indicated in footnote to daily- discharge table. Daily discharge ascertained by use of discharge integrator. Records good.

The following discharge measurements were made: October 14, 1925: Gage height, 5.97 feet; discharge, 826 second-feet. May 29, 1926: Gage height, 7.36 feet; discharge, 1,720 second-feet. July 28, 1926: Gage height, 4.85 feet; discharge, 309 second-feet.

Daily discharge, in second-feet, of Quinebaug River at Jewett City, Conn., for the year ending September 30'. 1926

Day

I...... .... .....2...............3...............4...............5 6 7... _ .........8.. ............ .9 __ . ___ ...10 11 ......12.... _ .. . ...13...............14..... ...._. ...15...............16 _ ............17...............18. .......19...............20... .........21...............22... ... .........23............ _24...............25 ............26... .......27.... ....... __28........ .......29...............30. ..........31...............

Oct.

3503807455

465500540465420290285550475480390440445240485480440435420178235565720605605560385

Nov.

200490470480415400225194

520450725

1,090865

1,3701,7301,5001,2401,000755455765900735370540695580

Dec.

990895

1,0701,8702,1002,1002,3402,1001,8101,4901,3301,020715

1,0101,210885

900670415875

1,3301,6801,460950715

950QQC

810

Jan.

550465380815940970980915680410755830755675595545330665

2,1202,8702,2602,0901,4601,070

1,2151,1201,040840660530

Feb.

8951,030990855740695510920osn785825800720

1,2201,5201,2501,310

2,1001,6701,7801,5601,4301,4503,9203,9502,690

Mar.

2,4202,6903,3202,6902,1801,7402,5004,250

3,2302,8702,4201,9501,6701,4801,600

1,5401,5001,3701,5302,1802,1802,2602 2602,3402,250

, 1, 6702,1002,4002,300

Apr.

2,2602,5102,1802,2602,5102,6902,8702,7802,7602,6902,3402,1001,950

1,8101,6701,5301,1901,4601,4901,0701,1901,1301,0101,1301,8801,8103,6701,5301,280

May

1,2501,0101,3401,3501,2701,2101,110815

700935775750720600980

1,8102,0201,8101,5601 280785600Qftn

1,100840850690

440

June

940985990730515360760720715600585450215565690650580560

230

620555485465370230465515485

July

47547030013610635038036034045050

375400

38540578

395Af\K

395405

38520558330320340345490605

Aug.

365515545460455395200124390385425400420172210505865910695580410205505495495430455370230520485

Sept.

4654203601686634037030526523017066

395

335260215120532602752452251685457215260

325

NOTE. Kecorder not in operation Jan. 2-6, Mar. 6-10,13-17, 27-31, Apr. 4-24, 29, June 21-23, July 27, 28, Sept. 6,8-11, and 16-18; discharge estimated.

CONNECTICUT KIVEK BASIN 69

Monthly discharge of Quinebaug River at Jewett City, Conn., for the year endingSeptember SO, 1926


Month

October. .. ___ _____ _________ ..

December- ___________________January. ......................................

March _______________________April.. _______________________

June.. _____ . ________________July... .....................................August ______________________September _________________ ....

The year.. ..............................


Maximum

720 1,730 2,340 2,870 3,950 4,250 2,870 2,020

990 605 910 465

4,250

Minimum

55 194 415 330 505

1,370 1,010

410 215 50

124 53

50

Mean

418 705

1,200 998

1,380 2,260 1,890

996 564 337 439 245

950

Per square mile

0.587 .990

1.69 1.40 1.94 3.17 2.65 1.40 .792 .473 .617 .344

1.33

Run-off in inches

0.68 1.10 1.95 1.61 2.02 3.66 2.96 1.61 .88 .55 .71 .38

18.11

CONNECTICUT RIVER BASIN

SECOND CONNECTICUT LAKE NEAR PITTSBURG, N. H.

LOCATION. At dam of Upper Connecticut River & Lake Improvement Co. at outlet of Second Lake, 12 miles northeast of Pittsburg, Coos County.

DRAINAGE AREA. 41.5 square miles.RECORDS AVAILABLE. October 1, 1922, to September 30, 1926.GAGE.: Vertical staff on cribwork of dam.EXTREMES OF STAGE. Maximum stage recorded during year, 14.45 feet No

vember 18 (water stored, 934 miUion cubic feet); minimum stage recorded, 1.3 feet April 8 (water stored, 58.1 million cubic feet).

1922-1926: Maximum stage recorded, 15.8 feet on September 11, 1924 (water stored, 1,045 million cubic feet); minimum stage, 0.7 foot February 1 to March 19, 1923 (water stored, 30.3 million cubic feet).

REGULATION. Normal capacity of lake is 979 million cubic feet at gage height 15.0 feet; the maximum stage of September 11, 1924, was due to unusual conditions, as ordinarily the water is not allowed to rise above gage height of 15.0 feet. Records show fluctuations in level of lake and are used in making corrections for effect of storage to observed records of flow of Con necticut River.-

Daily gage height, in feet, of Second Connecticut Lake near Pittsburg, N. H., for th e year ending September SO, 1926

Day

1.-- -- . 2.3-. . ........ .4...............5 ...... . .....

6. .......... .7 . 8 . _....9 ..... ...... .10 ............

11....... . ...... .12... ............13 ............14.. .........15.... ...........

Oct.

11.912.012.111.8511.6

11.210.7511.011.211.45

11.75U n

12.0512.212.4

Nov.

11.9512.0

12.1

12.219 3

12.4513.613.3

12 712.219 9.

13.013.6

Dec.

13.213 1510 1

13.051°. n

iq n13.0510 1

10 1 C

10 1 K

13.01 9 O^12 919 Q

12.85

Jan.

11.65

11.511.4U OK

n o

11.2U 1 *\

11.1

11.0511.1

11.111.1

Feb.

11.9H O

11 911 9U QC

11.95n nc

11.95n o11 9

U QC

n QC

n OK

11.9

Mar.

11.85U Q

n 'rc

11.711.7

11.7

11.6511.55

7 fto a

9 -1

9 a

10.2

Apr.

2.01 9i ft1.7

1.51.41 Q

1.4i P»

1.451.-41.4

May

3.65Q 7K

4.46 47.65

7.77 ft7 9O IK

7 Q

7 3

7.78.3

June

11.7512.251 9 O

12.2n cc

11.411.0n o

11.4

n o

U OK

12.0519 1

19.3.

July

19 7^19 *7

12.719 fi^L.19 ft

i n c

12.45

12 412.5

19 a19 OK.19 QK19 Q

12.RK

Aug.

12.0512.051O 1 K

19 119 119919 91 9 9

19919 9

12.2512. 35

Sept.

19 719 7

19 A

12.55

19 K.

19 EC

U QK

10.9510.65in. 35


Daily gage height, in feet, of Second Connecticut Lake near Pittsburg, N*H.,for the year ending September 30, 1926 Continued

Day

16... ............17... ............18...... .........19.......... .. .20...............

21..............22..... .23...-.....; ....24...............25........

26..............27.... . .28.......... ..29.. . . ..30...............31.. .

Oct.

13.112.7512.8

11.9

11.3511.010.5510.6510.75

11.1511.3511.511.6511.7511.85

Nov.

13.8514.414.4514 t1415

19 Q

13.65iq ec

13.5

13.513.413.4iq QC

13.35

Dec.

12.7512.65

19 4519 qc

12.319 919 1 K

12.119 fi

11.911 a11.7511.7

Jan.

11.15n o

11.2n o

11.45

11.611.7511.7511.7511.75

n o

n o

11.8511.85n °C

11 9

Feb.

11.911 9n o1 1 QC

11.95

11.95n Qc

11.9511 911 9

11 911.8511.85

Mar.

10.811.5

fi 0

6 9

5.0A. 5

4.13 0

3 C

3 0

2.92.72 C

2.39 9

Apr.

1.4

i z*1.5

1.51.51.651.75

i (\^ a3.7q 7K

3.7

May

8.5a &9.1Q i

9 R

9 K

9.49 APL

10.6

11.4512.112.15n o

11.5511.4

June

13.05

12.01O OK

19 P;

19 fi

12.712.7512.7519 71

19 7

12.7512.7519 7 C1

12.75

July

12.812.712.6512.6512.6

12.5512.512.4512.419 S5

12.3512.212.1512.112 112.1

Aug.

12.3512.412 419 4

12.45

19 S5

12.3512.3510 OK

12.5

12.5512.6512.712.7512.7

Sept.

9.89 18.5a n7.75

7.06.25.55

' 4 0

4.955.04.754.454.15

FIRST-CONNECTICUT LAKE NEAB PITTSBUBG, N. H.

LOCATION. At dam of tipper Connecticut River & Lake Improvement Co. at outlet of First Lake, 6 miles northeast of Pittsburg, Coos County.

DRAINAGE AREA. 81.4 square miles.RECORDS AVAILABLE. October 1, 1916, to September 30, 1926.GAGE. Staff gage attached to timber of dam near gates with datum 0.9 foot

above sill of lowest outlet gate.EXTREMES OP STAGE. Maximum stage recorded during year, 26.2 feet June 5

and 6 (water stored, 2,916 million cubic feet 0; minimum stage recorded, 7.65 feet April 8 (water stored, 758.4 million cubic feet ')

1917-1926: Maximum stage recorded, same as 1926; minimum stage re corded, 2.1 feet February 17, 1917, and May 6 and 7, 1922 (water stored, 252.5 million cubic feet 1)-

REGULATION. During the summer of 1924 the dam at outlet of First Connecti cut Lake was raised to give a total capacity of 3,010 million cubic feet at gage height 27 feet. The dam is controlled by three gates, the sills of the gates varying from 0.9 to 14.4 feet on the gage. Records show fluctua tions in level of lake and are used in making corrections for effect of storage to observed records of flow of Connecticut River. Additional storage has been developed in Second Lake and on tributary streams.

Daily gage height, in feet, of First Connecticut Lake near Pittsburg, N. H., for the year ending September SO, 1926

Day

I... .......... 2. ..............3-.. ....... .4...... _ ......5 .............

6-... .......7 -. 8 ._.-. .-9...............

16 ............

Oct.

18.618.618.6519.019.65

20.020.420.4520.520.55

Nov.

24.8594 OK

24.8594 S2^

94 Rf^

24.8524.925.425.7

Dec.

25.95OK QK

25.9526.0

26.026.0526.0526.126.1

Jan.

26.126.126.126.126.1

26.126.126.126.126.1

Feb.

25.525.4525.3525.325.2

25.125.024.924.824.7

Mar.

20.319.719.1518.517.8

17.1516.4515.915.2514.5

Apr.

8.858.78.58.38.15

8.07.87.657.77.75

May

10.8511.111.7512.913.75

14.4515.115.8516.4517.1

June

25.7525.625.826.0526.2

26.226.1525.8525.5525.2

July

25.6525.6525.625.625.6

25.5525.5525.5525.5525.6

Aug.

25.325.225.225.1525.05

24 052458524.7524.7

Sept.

20.1519.619.0518.517.9

17.3516.7516.1515.5514.9

1 Does not include water stored in Second Lake or tributaries.

CONNECTICUT RIVER BASIN 71

Daily gage height, infect, of First Connecticut Lake near Pittsburg, N. H., for the year ending September SO, 192'6 Continued

Day

11 . 12..... ..........13......... ......14...............15...............

16...............17...............18...............19.............20 ...........

21 22 . 23 .24 ............25 ............

26...............27 .28 ............29 . .30 31

Oct.

20.6520.7520.820.8520.95

21.221.822.7523.424.0

24.3524.6524.9524.924.85

24.9524.8524.924.924.924.9

Nov.

26.026.026.025.925.95

26.0526.126.0526.026.0

25.9525.9525.95

25.9

25.8525.8525.925.9525.95

Dec.

26.126.126.126.126.1

26.0526.026.026.026.0

26.026.026.026.026.0

26.026.026.0526.0526.0526.1

Jan.

26.126. 1526.1526.1526.15

25.9525.925.8525.825.75

25.725.725.7

25.7

25.725.725.625.625.625.6

Feb.

24.624.524.424.3524.25

24.023.8523.5523.3523.2

23.022.7522.5522.3522.1

21.721.320.85

Mar.

13.613.112.712.111.7

10.7510.359.99.79.4

9.19.29.259.359.45

9.459.59.459.49.259.05

Apr.

7.757.757.757.87.85

7.958.08.058.158.2

8.258.3&48.68.9

9.459.85

10.110.410.65

May

17.618.1518.6519. 1519.8

20.4521.121.7522.322.85

23.523.924.425.025.15

25.225.1525.2525.525.725.9

June

25.125.024.9525.024.95

25.125.525.925.925.8

25.825.725.525.525.5

25.525.525.525.525.6

July

25.725.825.825.825.8

25.825.825.825.825.75

25.7525.725.725.6525.6

25.5525.525.525.425.425.4

Aug.

24.6524.5524.524.4524.35

24.2524.1524.124.023.9

23.823.723.623.5523.55

23.222.6522.2521.7521.2520.7

Sept.

14.314.214.113.6513.2

12.912.712.6512.311.85

11.711.511.210.7510.55

10.510.29.95

10.1510.35

CONNECTICUT RIVER AT FIRST CONNECTICUT LAKE, NEAR PITTSBURG, N. H.* ;

LOCATION. At outlet of First Connecticut Lake, 6 miles northeast of Pittsburg, Coos County. *

DRAINAGE AREA. 81.4 square miles.RECORDS AVAILABLE. April 1, 1917, to September 30, 1926.GAGE. Water-stage recorder on right bank one-fourth mile below outlet dam;

inspected by H. H. Young.DISCHARGE MEASUREMENTS. Made from cable 200 feet above gage, from high

way bridge 3 miles below, or by wading.CHANNEL AND CONTROL. -Bed rough, with rock bottom; channel at cable sec

tion has been improved by removal of rocks and ledges. Control for river gage is rock ledge extending completely across stream; 3 feet of fall immedi ately below ledge.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re corder, 3.73 feet at 3 p. m. March 14 (discharge, about 1,220 second-feet; water being released from storage); minimum discharge, 7 second-feet April 14 and 15 (gates closed at dam).

1917-1926: Maximum discharge recorded, about 3,870 second-feet May 5, 1925 (water being released from storage); minimum discharge during period 3 second-feet during several days in April, 1917 (gates closed at dam).

ICE. Stage-discharge relation occasionally slightly affected by ice.REGULATION. 4.1 billion cubic feet of storage has been developed in lakes and

ponds above gage; records of monthly discharge have been corrected for effect of storage in First Lake since April, 1917, and for effect of storage in Second Lake since October, 1919.

ACCURACY. Stage-discharge relation permanent; not affected by ice. Rating curve fairly well defined below 800 second-feet. Operation of water-stage recorder satisfactory except as noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table, except on days of considerable fluctuation when discharge for portions of days were weighted to obtain mean. Records good.

The following discharge measurement was made:September 4, 1926: Gage height, 3.28 feet; discharge, 871 second-feet.


Daily discharge, in second-feet, of Connecticut River at First Connecticut Lake, near Pittsburg, N>. H., for the year ending September 80,

Day

1.. .............2..... .......3. _ .. _ . _ ..4.. _ ..........5. .

6.. ..........7. 8. ...........9...............10

11 _ ............12...... ....13........ __ ..14 - _ .......16

16 17 18 . 19. __20

21 __ ..22... . ...23- __ ..24 .25

26 27 28. _ ...........29 __30 31. ......

Oct.

5252566060

6265656567

6767676767

6771788083

8386168227156-IDA

14598989898

Nov.

09

920909

89

8989952144-flfi

Wl

526519RIO

526

606698698CQ1

485

406374302230287

201153«149145145

Dec.

149

142142149

142

14C

16419791 fl

210

21021091 fl

210

91 fl

172149140

145

145142149

142142

1077889959595

Jan.

104110

114114

114114114101so

80767474

164

206176

176176

1601531 t&.

153131

114114988686121

Feb.

14.0

149180914

214

21421421491 fl

206

206201197

328

4124063931OT

387

381368362387591

71474fi

796

Mar.

839882Qftfl990945

990900Qftncon

1,040

1,040900

1,1201,1201,040

990945873813754

298114110110114

114114114224317312

Apr.

V\7307OflO

297297

277258914,

8383

83834577

9811912

1288818

1311101010

May

1222242119

2022262932

3538394345

5052545458

606067117292

302307302307350374

June

374374V7A.412519

576591583569381

25814983283212

114114168262272

267267236172153

117117114114117

July

117117117117117

117121117117121

124124124124124

124124124124124

124124128128131

131131131131131131

Aug.

135135135135135

135153153153153

153153153153153

153149149145145

149149149149417

746754730730746779

Sept.

770762762770754

770770770762754

779804779779770

577458668730706

698682666659643

6516363163232

NOTE. Water-stage recorder not in operation Feb. 24,25, Mar. 5-8, and 17-20; discharge estimated from record of gate openings.

Monthly discharge of Connecticut River at First Connecticut Lake, near Pittsburg, N. H., for the year ending September SO,

1 [Drainage area, 81.4 square miles]

Month

November ....................

February .....................

July. ... .... ....... .......

Observed discharge (second- feet)

Max imum

227 698 210 206 796

1,120 307 374 591 131 779 804

1,120

Min imum

52 89 78 74

149 110

7 12 83

117 135 32

7

Mean

88.9 314 154 124 337 675 93.6

104 278 124 272 657

267

Gain or loss in storage at First

and Second Connecti cut Lakes

(millions of cubic-feet)

+800.2 +259.0 -110.0-51.7

-612.7 -1,952.9

+242.4 +2,324.7

+65.6 -78.2

-590.0 -1, 728. 9

-1,432.5

Discharge corrected for storage

Mean

388 414 113 105 84

%972 303 94.8 52

( )

227

Per square mile

4.76 5.08 1.39 1.29 1.03a,

11.9 3.73 1.16 .639

W

2.79

Run-off iahwjjjss

5.49 5.67 1.60 1.49 1.07

<\57 13.72 4.16 1.34 .74

«Q7 OQd(. OO

0 Apparent depletion of storage during March and September slightly exceeded total discharge past the gage during these months. *


* CONNECTICUT EIVEB AT SOUTH NEWBUBY, VT.

LOCATION. At covered highway bridge between South Newbury, OrleansCounty, Vt., and Haverhill, Grafton County, N. H., half a mile belowOliverian Brook, and 4 miles above mouth of Waits River

DRAINAGE AREA. 2,830 square miles. RECORDS AVAILABLE. July 22, 1918, to December 20, 1921, and August 19,

1922, to September 30, 1926. GAGE. Chain gage on downstream side of bridge; read by Mrs. M. W. Dickey.

Datum is 8.8 feet higher than datum of gage at Orford. DISCHARGE MEASUREMENTS. Made from downstream side of highway bridge

\% miles above gage.CHANNEL AND CONTROL. Channel wide and deep, with gravelly bottom. Con

trol not clearly denned, except that several distinct riffles appear betweenSouth Newbury and Orford.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 26.90 feet at6 p. m. May 5 (discharge, by extension of rating curve, 37,200 second-feet);minimum stage, 0.50 foot at 8 a. m. August 23 (discharge, 540 second-feet).

1918-1926: Maximum stage recorded, 30.65 feet May 1, 1923 (discharge,by extension of rating curve, 43,600 second-feet); minimum stage 0.30' footSeptember 24, 1921 (discharge, 460 second-feet).

ICE. Stage-discharge relation affected by ice, usually from December to March;ice cover generally remains in place throughout winter.

REGULATION. About 4,100 million cubic feet of storage has been developed atFirst and Second Connecticut Lakes and tributary streams above Pittsburg.There are several power developments above station, but their operationdoes not seriously affect distributipn of flow.

ACCURACT. Stage-discharge relation permanent except when affected by ice.Rating curve well defined below 28,000 second-feet and extended above.Gage read to hundredths twice daily. Daily discharge ascertained byapplying mean daily gage height to rating table with correction for effect ofice during winter. Records good during open-water period and fair forperiods affected by ice.

The following discharge measurements were made:January 30, 1926: Gage height, 3.94 feet; discharge, 1,570 second-feet (stage

discharge relation affected by ice).May 21, 1926: Gage height, 10.03 feet; discharge, 10,300, second-feet. September 15, 1926: Gage height, 2.44 feet; discharge, 1,840 second-feet.

Daily discharge, in second-feet, of Connecticut River at South Newbury, Vt., for the year ending September SO, 1926

Day

I... ............2...............3 .. ......... .4...............5---.- ..........

« 7... ... ......8... ......... ...9... ..... .......

10.. ..........

11 12 13 14 ...... .16... ............

Oct.

4,0003,1002,8306,5409,740

9,2206, 7805, 8605,2005,090

5,9706,1906,4205,4206.780

Nov.

5,2004,3204,1003,9003,700

3,5003,3004,430

12,20015,900

15,20011,2008,220

10,60012.700

Dec.

5,3105,8605,8605,8606,420

6,5408,580

6,9004,760

4,8705,0904,9804,9804.760

Jan.

9 <18fl2,3802,3002,380-2,140

2'SBO2' loo1^8201,860

1,8201,7001 8601,7401.620

Feb.

1,8601,6601,8201,7401,780

1,6201, 6601,7401,5901,520

1,5501,590

1, 5201,6201.590

Mar.

1,8202,0602,1002,1002,140

1,7402,2202,3002,3802,380

2,2202,3009 ^nn2,3802.380

Apr.

2,6502,7402,7402,9202,920

2,6202,9203,1004,3207,740

10,60010,3009,8709,480

12.000

May

16,90016,70023,50033,20036,900

36,40030,9009d inn19,00016,200

14,90013,200

12,90012.900

June

5,4205,7505,9706,7806,660

5,8605,0904,5404,5404,870

4,6504,3204,2103,8005.530

July

2,4702,7402,6502,2202,140

1,6601,5501 6601,7803,800

11,00010,6007,9806,6003.SOO

Aug.

1,7001,5201,5502,0202,220

1,9001,6601,7001,7401,900

1,9401,8601,7001,5201.740

Sept.

3,2003,0101,9401,8201,740

1,7401,9802,0202,1002,020

1,8601,9402,1001,6001.740


Daily discharge, in second-feet, of Connecticut River at South Newbury, Vt., for the year ending September 30, 1926 Continued

Day

16. 17 .18 19.... _ 20.

21. _________22 _________23 24.... _ ........25

26 27 ____ ... 28 _ ............29 30.. ___ .......31 _ ....... _ ..

Oct.

10,00012,20016,10015,50014,100

in 4/in8,3406,9005,9705,420

8,8309,6108,7007,2606,1905,420

Nov.

16,400

21,40018,80013, 800

in fiftft9,0907,9807 1406,080

5,640

4,7604,7604,650

Dec.

4,6504,7604,5404,6504, 650

4,2104,1004,0003,3003,300

2,9202,6502,5602,9202,4702,380

Jan.

1,6601,6201,5201,9003 4/in

S Kftft

3,3002,9202,7402,380

2,1802,1401,9001,6201,700

Feb.

1,6201,6201,6201,6601,700

1 7^n

1,7401,7801,6201 740

1,6601,8201,740

Mar.

2,4702,560

2,5602,470

2,3802,380

9 fi^fl

2,7402,8302,8302,6502,5602,560

Apr.

9,610

6,7805,750

8,34015, 80090 nrtfl

30,300

35,00032,60028,70024,00019,600

May

12,80012,20011,50011,40010,600

10,1009,3508,4608,1008,100

7,5007,140

5,7505,310

June

17,000

17,6009,0907,980

4,7604,2103,8003,300

2,9202,8303,2002,9202,380

July

3,200

2,4702,0602,140

2,0601,8601,8202,1802,220

1,8201,5901,3401,5201,6201,740

Aug.

1,9002,1401,7801,6201,660

1,200950715

1,2001,380

1,9003,2003,3003,7003,6003,500

Sept.

1,9009 nfid3,5003,5002,920

2,5602,3802,0202,0201,940

4,3204,7604,4303,6002,830

NOTE. Stage-discharge relation affected by ice Dec. 22 to Apr. 12; discharge based on gage height cor rected for effect of ice on basis of one discharge measurement, observer's notes, weather reports, and records from stations in adjacent drainage basins.

Monthly discharge of Connecticut River at South Newbury, Vt., for the year endingSeptember SO, 1926


Month

April.. ............ .......

July ..-.-... ......


Max imum

16,100 22,200 8,580 3,500 1,860 2,830

35,000 36,900 17, 600 11,000 3,700 4,760

36, 900

Min imum

2,830 3,300 2,380 1,520 1,520 1,740 2,650 5,310 2,380 1,340

715 1,740

715

Mean

7,740 9,210 4,740 2,170 1,680 2,390

11,500 14,900 6,160 3,080 1,950 2,530

5,690




+800.2 +259.0 -110. 0 -51.7

-612. 7 -1, 952. 9

+242.4 +2, 324. 7

+65.6 -78.2

-590. 0 1, 728. 9

-1, 432. 5


Mean

8,040. 9,310 4,700 2,150 1,430 1,660

11,600 15,800 6,180 3,050 1,730 1,860

5,640

Per square mile

2.84 3.30 1.66 .760 .505 .587

4.10 5.58 2.18 1.08 .611 .657

1.99

Run-off in inches

3.27 3.68 1.91 .88 .53 .68

4.57 6.43 2.43 1.24 .70 .73

27.05

CONNECTICUT EIVEE AT WHITE EIVEE JUNCTION, VT.

LOCATION. At railroad bridge between Westboro, Lebanon Township, Grafton County, N. H., and White Rivei Junction, Hartford Township, Windsor County, Vt. Mascoma River enters from east 1 mile below gage.

DRAINAGE AREA. 4,120 square miles.RECORDS AVAILABLE. November 1, 1911, to September 30, 1926.GAGE. Chain gage over west channel installed June 16, 1918; read by F. H.

Chipman.DISCHARGE MEASUREMENTS. Made at highway bridges one-fourth mile above

gage, the flow in White River and in Connecticut Rivei above confluence of two streams being measured separately, the sum of the two being the dis charge at gage.


CHANNEL, AND CONTROL. Channel deep, bed covered with alluvial deposits, gravel, and rock ledge; control formed by rock outcrop extending across the river at several places below gage; control for high water is probably at Quechee Falls, 7 miles downstream.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 20.4 feet at 4 p. m. April 25 (discharge, 57,100 second-feet); minimum stage, 3.2 feet at 8 a. m. August 22 (discharge, 820 second-feet).

1912-1926: Maximum stage recorded, 30.0 feet at 9 p. m. Maich 27, 1913 (discharge, by logarithmic extension of rating curve, 113,000 second-feet); minimum stage, 2.8 feet September 8, 1913 (discharge, 560 second-feet).

ICE. River covered with ice each winter, usually from December to March; stage-discharge relation seriously affected.

REGULATION. Distribution of flow not seriously affected by power plants, except for low water on Sundays caused by Sunday shutdown of paper mill at Wilder, 2 miles above gage. About 4,100 million cubic feet of storage at Connecticut Lakes and tributary streams above Pittsburg, N. H., has some effect on low-water discharge.

ACCURACY. Stage-discharge relation permanent except when affected by ice. Rating curve well defined. Gage read to tenths twice daily. Daily dis charge ascertained by applying mean daily gage height to rating table, with correction for effect of ice during winter. Records good for open-water period and fair foi periods affected by ice.

COOPERATION. Gage-height record furnished by New England Power Co.

The following discharge measurements were made:February 1, 1926: Gage height, 8.18 feet; discharge, 3,990 second-feet.May 22, 1926: Gage height, 9.15 feet; discharge, 12,300 second-feet.

Daily discharge, in second-feet, of Connecticut River at White River Junction, Vt., for the year ending September SO, 1926 ,

Day

1- . . 2.. .............3 4... ___ ......5.... . ..........6

8 9 _________

10.. ._-.__... _11 12 13 14.. ......-.15 16 17 18 19. .......20...... .........21 22 23..............24 25 .26 27 ..28 -29 30 31 .

Oct.

5,3904,6004,6006,960

11,40012,00010, 3008,1807,2007,9308,1808,9609,5009,2309,230

11,40014,50018,70019,00017,70015, 10011, 7009,7708,4307,930

15, 10014, 10012,60011, 4009,7708,430

Nov.

7,2007,2006,2706,2705,8305,6106,0507,680

15, 70019,70019, 70016,10013, 20016,40016,40024,70029, 600 .27, 70024,70022,50015,70013,20012, 30010,9009,7708,6907,9307,9307,2005,830

Dec.

5,1805,3906,5007,680

10,30012, 60014,80012,90011,4008,6904,9805,1806,2706,2705,3905,3904,9804,9804,6004,2204,4104,4104,0403,8603,6803,6803,5003,6803,6803,5003,500

Jan.

3,5003,5003,3203,5003,1502,8203,1503,5003,1502,8203,5003,5003,1502,9802,8202,5302,2502,5303,6806,730

5,8305,3904,6004,6004,2203,8603,6803,5003,3202,390

Feb.

4,0403,6803,1503,1503,1503,1502,3903,5003,3203,5003,1503,1502,9802,2503,1503.1502,8202,8202,8202,820

2,9802,8202,9802,8202,8202,8201,980

Mar.

3,1502,8202,8202,8202,8202,9802,1103,3203,1503,1502,9802,8202,8202,2502,8202,5302,5302,6702,6702,6702,250

2,8203,1503,3204,0404,0404,0403,8603,8603,320

Apr.

2,9802,9803,1503,1503,6803,3203,3203,5008,690

13,20015, 10015,10012, 90015,70021,10018, 70015,10013, 20012,00010, 90010, 90017,00032,80039, 60057, 10055, 20048,80042, 70038,30032,400

May

27, 70026,90035,70048,00049, 70049, 70044. 40035,30026, 90023,60021,80019, 00018, 30017,70017, 30016,70016, 40015, 40015,10014,10013, 80012,60011,40010,60010, 3009,7709,5009,2308,1807,2007,200

June

6,9606,9607,6808,1808,180

7,6806,9606,5006,2706,2705,8305,8304,6004,6005,390

17, 70021, 10018, 70013,8009,7707,9306,7305,8305,1804,7904,2203,5004,6004,4104,220

July

3,8603,5004,0401,9802,6703,5002,9802,9802,6705,390

14, 10014,50011,1008,4306,7305,6104,4102,5302,9802,6703,1502,9803,1502,9801,7203,1502,8202,2501,9801,9802,530

Aug.

1,4002,8202,5302,9802,8202,9802,6701,4003,1502,820

2,6702,6702,6702,5301, 5003,1502,2502,2502,2502,2502,250

8901,9801,5001,4002,9802,9803,8603,3204,6003, 860

Sept.

2,6702,2503,1502,8201,3001,5002,5302,8202,8202,8203,3201,5002,6702,9802,6702,1102,2502,9803,3203,5006,2703,3202,8202,8202,8204,7906,2705,8304,6003,860

NOTE. Stage-discharge relation affected by ice Dec. 21 to Apr. 8; discharge based on gage height cor rected for effect of ice on basis of discharge measurement, observer's notes, weather reports, and records from stations in same drainage basin.

63435 30 8


Monthly discharge of Connecticut River at White River Junction, Vt., for the year ending September 30, 1926


Month

October. .....................

March.. ......................

July... .......................August ___________ ....


Max imum

19,000 29,600 14,800 6,730 4,040 4,040

57,100 49,700 21,100 14,500 4,600 6,270

57,100

Min imum

4,600 5,610 3,500 2,250 1,980 2,110 2,980 7,200 3,500 1,720

890 1,300

890

Mean

10, 600 13,300 6,120 3,680 2,990 3,020

19,100 21,000 7,680 4,370 2,560 3,180

8,140




+800.' 2 +259.0 -110. 0 -51.7

-612. 7 -1,952.9

+242. 4 +2, 324. 7

+65.6 -78.2

-590. 0 -1,728.9

-1,432.5


Mean

10,900 13,400 6,080 3,660 2,740 2,290

19,200 21,900 7,700 4,340 2,340 2,510

8,100

Persquare mile

2.65 3.25 1.48 .888 .665 .556

4.66 5.32 1.87 1.05 .568 .609

1.97

Run-off In inches

3.06 3.63 1.71 1.02 .69 .64

5.20 6.13

. 2.09 1.21 .65 .68

26.71

CONNECTICUT RIVER AT SUNDERIAND, MASS.

LOCATION. At five-span steel highway bridge at Sunderland, Franklin County, on road leading to South Deerfield, 18 miles in direct line and 24 miles by river above dam at Holyoke. Deerfield River enters from west 8 miles above station.

DRAINAGE AREA. 8,000 square miles.RECORDS AVAILABLE. March 31, 1904, to September 30, 1926.GAGE. Water-stage recorder on left bank, near downstream side of bridge;

inspected by P. J. Hogan.DISCHARGE MEASUREMENTS. Made from highway bridge.CHANNEL AND CONTROL. Channel deep, with bottom of coarse gravel and

alluvial deposits. Control at low stages not well defined but practically permanent. At high stages the control is at crest of dam at Holyoke.

EXTREMES OF DISCHARGE; Maximum stage during year, from water-stage recorder, 24.90 feet at 1.30 p. m. April 26 (discharge, 83,700 second-feet); minimum stage, 0.08 foot at 6 a. m. September 27 (discharge, 490 second- feet).

1904-1926: Maximum stage recorded, 30.7 feet during night of March 28, 1913, determined by leveling from floodmarks (revised discharge, by extension of rating curve, 135,000 second-feet); minimum stage, 0.0 foot August 29, 1921 (discharge, by extension of rating curve, 450 second-feet).

ICE. River usually freezes over early in winter, but ice is likely to break up at times of sudden rises in stage and at those times it occasionally forms ice jams at Northampton, 10 miles below station causing several feet of back water at gage.

REGULATION. Distribution of flow affected by operation of power plants at Turners Falls, and by regulation of Deerfield River (see Deerfield River at Charlemont, Mass.). Effect of regulation is shown by low water at gage on Sundays and Mondays. Records of monthly discharge corrected for storage in First and Second Connecticut Lakes and in Somerset and Davis Bridge Reservoirs.


ACCURACY. Stage-discharge relation permanent except when affected by ice. Eating curve well defined below 75,000 second-feet. Chain gage read to hundredths twice daily. Operation of recorder satisfactory except foi period as noted in footnote to daily-discharge table. Owing to partly clogged intake pipe mean daily gage height as determined from recorder graph by inspection was corrected by amount as determined from chain gage readings. Daily discharge ascertained by applying corrected mean daily gage height to rating table, with corrections for effect of ice during winter. Records fair for open-water conditions; during ice period, subject to error.

.The following discharge measurements were made:April 13, 1926: Gage height, 12.44 feet; discharge, 34,100 second-feet.July 17, 1926: Gage height, 5.86 feet; discharge, 9,840 second-feet.

Daily discharge, in second-feet, of Connecticut River at Sunderland, Mass., for the year ending September 30, 1926

Day

1 - . 2 3-...-.....--...4.... ...........5....... ........

6..-...-..-.....7.... ...........8...............9...............

10... ............

11...............12...............13- 14 15

16... ...... . 17. ...........18.... .. .........19 20

21..... ....22 ...... ......23 24 .25 .

26.. ........27 28 29 .80.... ...........31

Oct.

6,490 7,420 6,720 5,620 7,420

12,600 13,600 14,000 13,300 12,600

8,160 8,160

12,000 13,000 12,600

12,000 13,000 13,600 21,700 22,800

21,700 19,500 17,000 16,000 11,300

21,000 23,200 21,400 19,500 17,800 17 000'

Nov.

12,300 11,700 11,300 10,400 10,100

8,690 10,100 9,240

17,800 25,100

25,500 25,500 31,200 38,000 30,800

33,100 41,900 42,300 37,700 37,700

29,300 24,000 20,600 24,700 16,700

13,600 13,600 15,400 15,000 14,000

Dec.

1-2, 300 10,100 10,700 17,800 26,200

32,300 34,200 29,300 27,700 22,100

19,500 15,300 7,660

10,400 14,000

12,000 12,600 15,300 14,700 9,520

10,100 13,600 14,300 13,300 11,000

14,000 8,420 8,960

12,000 9,520 9,810

Jan.

7,910 5,410 3,670 7,910 9,240

8,160 7,910 7,910 8,960 5,830

5,830 8,160 6,950 6,050 7,910

5,300 5,200 7,180

16,400 20,600

20,600 18,800 16,000 10,100 10,700

10, 700. 10,100 10,400 10.JOO 9,240 6,490

Feb.

7,910 8,960 9,810 9,810 8,160

7,910 6,950 7,420

10,400 9,810

8,960 9,520 9,520 5,410 7,180

9,810 10,100 8,420 9,810 8,690

5,830 7,910

10,100 8,960 8,420

8,960 9,240 7,420

Mar.

10,700 14,700 8,420 7,180 6,950

7,180 4,590 7,180 9,810

10,700

11,000 11,000 9,520 6,950 9,240

9,240 8,960 8,960 9,520

11,000

8,420 9,810

13,000 14,700 17,400

21,000 23,600 21,400 16,400 16,700 16,000

Apr.

15,300 14,300 13,000 11,000 13,600

16,400 15,700 16,700 24,300 30,800

37,700 39,200 35,300 35.000 41,600

43,100 39,200 33,400 30,400 27,700

26,.200 32,700 56,500 67,700 75,100

82,900 76,700 66,900 60,100 54,800

May

49,400 43,900 47,800 55,700 58,900

58,500 58,100 53,700 45,500 40,400

32,700 30,800 28,500 27,000 27,700

19,200 20,600 24,000 18,800 19,500

21,000 19,900 17,800 17,400 15,700

14,000 14,000 14,700 13,300 10,100 8,420

June

10,100 11,000 10,100 14,000 13,000

8,160 11,000 10,700 10,400 10,700

9,520 10,100

7,660 7,660 8,420

13,300 21,700 25,500 22,500 18,100

15,000 12,300 10,100 9,2407,420

6,050 5,410 7, -910 7,420 6,050

July

6,950 6,270 6,050 4,500 2,940

4,790 4,790 5,830 6,050 6,050

8,160 20,300 20,300 16,000 14,700

12,000 8,960 5,620 5,200 5,620

5,300 4,990 4,990 3,940 2,080

5,410 4,890 4,890 6^490 4,590 3,580

Aug.

1,290 4,210 5,100 4,300 5,300

5,620 5,620 2,380 3,420 4,790

6,050 4,690 4,210 3,020 1,840

3,420 5,100 3,940 4,030 4,210

2,650 1,240 3,170 4,210 4,030

4,300 4,590 3,250 1,730 4,500 6,720

Sept.

6,270 5,410 4,690 4,890 2,580

1,620 4,990 5,200 4,690 4,590

3,9401,180 3,670 5,830 4,790

4,690 4,400 2,940 1,130 3,580

5,200 4,990 5,100 4,400 3,760

1,340 4,210 7,910 7,420 7,420

NOTE. Stage-discharge relation affected by ice Dec. 27 to Apr. 3; discharge estimated by comparison with records of Connecticut River at Vernon, Vt., and by study of observer's notes and weather records. Recorder not in operation Apr. 9-13; mean of two daily chain gage readings used.


Monthly discharge of Connecticut River at Sunderland, Mass., for the year endingSeptember SO, 1926


Month

July.. .- .-. ......


Maxi mum

23,200 42,300 34,200 20,600 10,400 23,600 82,900 58,900 25,500 20,300

6,720 7,910

82,900

Mini mum

5,620 8,690 8,420 3,670 5,410 4,590

11,000 8,420 5,410 2,080 1,240 1,130

1,130

Mean

14,300 21,900 15,400 9,540 8,620

11,700 37,800 29,900 11,400

7,170 3,970 4,430

14,700

Gain or loss in storage at

Connecti cut Lakes, Somerset

and Davis Bridge

Reservoirs (millions of cubic-feet)

+859 +1, 624

-446 -1, 870 -2,800 -2, 111 +3, 936 +4, 151

-312 -1,744 -1,632 -2, 344

-2, 688


Mean

14,600 22,500 15,200 8,840 7,460

10,900 39,300 31,400 11, 300 6,520 3,360 3,530

14,600

Per square mile

1.82 2.81 1.90 1.10 .932

1.36 4.91 3.92 1.41 .815 .420 .441

1.82

Run-off in inches

2.10 3.14 2.19 1.27 .97

1.57 5.48 4.52 1.57 .94 .48 .49

24.72

WHITE RIVEB AT WEST HARTFORD, VT.

LOCATION. 500 feet above highway bridge in West Hartford, Windsor County, 7 miles above mouth of river.

DRAINAGE AREA. 687 square miles.RECORDS AVAILABLE. June 9, 1915, to September 30, 1926.GAGE Inclined staff on left bank; read by F. P. Morse.DISCHARGE MEASUREMENTS. Made by wading.CHANNEL AND CONTROL. Channel wide and of fairly uniform cross section at

measuring section; covered with gravel and small boulders. Control formed by rock ledge 100 feet below gage; well defined.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 13.20 feet at 7 a. m. April 25 (discharge, 16,700 second-feet); minimum stage, 2.78 feet at 6 p. m. September 22 (discharge, 126 second-feet).

1915-1926: Maximum stage recorded, 16.9 feet April 12, 1922 (discharge by extension of rating curve, 24,500 second-feet); minimum stage, 2.05 feet June 27, 1923 (discharge, 19 second-feet).

The high water of March 27,1913, reached a stage of 18.9 feet as determined from reference point on scale platform opposite gage (discharge, about 30,000 second-feet).

ICE. River freezes over at gage; control usually remains partly open, although ice on rocks and along shore affects stage-discharge relation.

REGULATION. There are several power plants on the main stream and tribu taries above station, the nearest being that of Vermont Copper Co. at Sharon. When this plant is in operation it causes some diurnal fluctuation in discharge at low stages. The effect of power, plants farther upstream is

, practically eliminated by the large amount of pondage at Sharon.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined. Gage read to hundredths twice daily. Daily discharge determined by applying mean daily gage height to rating table. Records good for open-water period; fair for ice period.


The following discharge measurements were made:January 31, 1926: Gage height, 4.36 feet; discharge, 611 second-feet (stage-

discharge relation affected by ice).September 14, 1926: Gage height, 3.01 feet; discharge, 160 second-feet. September 14, 1926: Gage height, 3.11 feet; discharge, 201 second-feet.

Daily discharge, in second-feet, of White River at West Hartford, Vt., for the year ending September SO, 1926

Day

1 2.... ........3 ___ ......4 _ ..... ___ ..

6.. .......... ...7...............8...............9... ...... ......

10...............

11......... ...12...............13... ............14........ _ _-15,..... ..-..

16.. ._..,........17...............18............. .19...............20... ............

21...............22. ....23...............24...............25...............

26...............27...... _ ......28...............29..............30...............31... .........

Oct.

445395

1,3701,040

1,040855820750

1,200

1,2001,2001,5501,2801,280

1,4601,3701,8601,3701,650

1,2801,1201,0401,0401,200

4,0002,3201 7V\

1,8601,5501,280

Nov.

1,2801,2001,1201,040

960

1,0401 0401^2804,7302,320

1,860

2,5704,3602,840

6,1004,1802,9902,4402,200

1,9701,7501,7501,5501,370

1,2801,2809 9Oft

1 460'960

Dec.

1,2001,3701,2801,5502,570

3,1403,1402 00A

1,200

1,120

1,1201 A4.A

8901,200

960960960

960960960620750

652500

620560500

Jan.

530560Ken

530

CQA

445472

472

500472445

4452,0801,750

1,280960750750

652685652

560620

Feb.

620590560560

con

620530500

560

560620

620590560620685

652

652652620

620620a co

Mar.

652620

CQA

590620Ken

560ERA

530can

560

CQfl

9251,2001,2001,200

1,2001,200

1,2001,2801,370

Apr.

1,2801,2801 2801,280

1,2801,3701,550

5,900

4,0009 ft4.A

4,000C QAfi

4 0002,9902,700

2,8407,300

13,50011,00015,700

10,4006,3005,7004,9205,500

May

5,5001A 3ftfi

7,300

4,3604,0003 OOA

3,1402,840

2,7002,5702,4402.3209 9fin

1,7501,6501,6501,550

1,3701,2801,2001,200

960

925890855890785717

June

750820890820

620685820785

685560

5002 QQA

4 0001,8601,3701,200

855720717620

4455907QK

445

July

500OQC

395325

620eon

500

3,4701,6501,200

960

620500445445

370325345305265

247215230265345472

Aug.

230370

890750

370247

395345

285

285370

345345247285247

265230200247445

530395345325285230

Sept.

200200170175200

230one

325247395

420265230200215

200215200175215

200142170215560

560530420247247

NOTE. Stage-discharge relation affected by ice Dec. 22 to Apr. 8; daily discharge estimated from gage height corrected for ice effect by means of one discharge measurement, observer's notes, and a study of climatological data.

Monthly discharge of White River at West Hartford, Vt., for the year ending SeptemberSO, 1926


Month

July... ................ ........................


Maximum

4,000 6,100 3,140 2,080

685 1,370

15,700 14,200 4,000 3,470

890 560

15,700

Minimum

395 960 500 445 500 530

1,200 717 445 215 200 142

142

Mean

1,320 2,090 1,240

680 602 786

4,610 2,970

950 606 355 269

1,370

Per square mile

1.92 3.04 1.81 .990 .876

1.14 6.71 4.32 1.38 .882 .517 .392

2.00

Run-off in inches

2.21 3.39 2.09 1.14 .91

1.31 7.49 4.98 1.54 1.02 .60 .44

27.12


MASCOMA RIVER AT MASCOMA, N. H.

LOCATION. 250 feet below railroad bridge and 1,500 feet below outlet of Mas- coma Lake, in Mascoma, Grafton County.

DRAINAGE AREA. 148 square miles (measured on Walker map).RECORDS AVAILABLE. August 16, 1923, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by Frances Greeley.DISCHARGE MEASUREMENTS. Made from railroad bridge or by wading.CHANNEL AND CONTROL. Channel opposite gage is pool in which velocity is very

low. Control well denned at head of rapids 200 feet below gage.EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage

recorder, 5.57 feet at noon April 26 (discharge, by extension of rating curve, 2,680 second-feet); minimum stage, 1.15 feet at 4 a. m. and noon September 6 (discharge, by extension of rating curve, 2.4 second-feet).

1923-1926: Maximum stage recorded, 6.25 feet March 30, 1925 (discharge, by extension of rating curve, 3,700 second-feet; minimum stage, 1.03 feet June 28, 1925 (discharge, 1.2 second-feet).

ICE. Stage-discharge relation not affected by ice.REGULATION. Operation of gates in storage dam 1,500 feet above gage causes

considerable fluctuation in discharge during ordinary stages. About 1.5 billion cubic feet of storage has been developed in ponds and lakes in drainage basins above gage.

ACCURACY. Stage-discharge relation permanent. Rating curve well denned below 1,700 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying rating table to mean daily gage height or using weighted mean discharge for days when variation occurred from, opening and closing gates at dam. Records excellent.

The following discharge measurements were made:February 1, 1926: Gage height, 2.33 feet; discharge, 148 second-feet.May 24, 1926: Gage height, 2.44 feet; discharge, 168 second-feet.

Daily discharge, in second-feet, of Mascoma River at Mascoma, N. H., for the year ending September 30, 1926

Day

1. ..... ......2...............3 _ -... ..4. .- ......5 _______ ...6.. _ - _ ......7.... .......... .8.. --__.._- - .9...... .........10. ...........11 12....... ....... .13....... ........14 . 15

17 _ '. _ . _ . 18 19 20

21 22 23. .24

26 27 . _ ... ...28 . 29. ......30 31

Oct.

104103103811081041051101091128612211789969998113205208221

175158158227326322271250215

Nov.

185165

158153

158

326282

453ftOQ

643fiftfi47538533397 e

256235991

204206201199170

Dec.

115117123151288JO K

5034173189QS

125127127

12519Q

137142140l/IC

129125123123

Jan.

125123123123123IOQ

121121

1151 1Q

131129

129129

142160ISfl1 fift

175165

1 CO

151151151149147

Feb.

^ 147147147147147147145145

1471 t\1

1531 W

153151

170170170

168

1601 CO

156156

Mar.

151158173173170168168

158

151149

14714.C

142

14013713714014014.C

145145147149

Apr.

149149151153153

156

107

1OC

13504.7

589489422

4fl ccoo

1,060

2,1709 fi'yi

2,040

1,110

May

940884948

1,2401,210

712606

453409397070

286262240

203

20319717515914319C

130121115110108

June

108110

. 121123121115110106108108104.

102100100100104108112

117115115110108110Iftfi

104104IfU

July

104102100989797979797100110234

1751481281171061041021021021001001009897959595104

Aug.

115115115115115112112110112110110110110108

98878684869197979797Q<;89898787

Sept.

1009797812.5

4797979798978997100989797

86Q1

89Q&

9189QQ

fU.

938993


Monthly discharge of Mascoma River at Mascoma, N. H., for. the year endingSeptember 30, 1926


Month

April..........................................

July.................... ......................

The year. .. ___ . __ . _ -.-._--. .....


Maximum

326 643 518 188 170 173

2,650 1,240

123 234 115 100

2.650

Minimum

81 153 115 115 142 137 107 108 100 95 84 2.5

2.5

Mean

155 298 200 139 155 151 629 417 109 114 102 88.8

213

Persquare mile

1.05 2.01 1.35 .939

1.05 1.02 4.25 2.82 .736 .770 .689 .600

1.44

Run-off ininches

1.21 2 24 1.66 1.08 1.09 1 18 4.74 3.25 .82 .89 .79 .67

19.52

ASHUELOT RIVER NEAR GILSUM, N. H.

LOCATION. At stone-arch highway bridge on Keene-Newport road, 1 mile below- Gilsum and 8 miles north of Keene, Cheshire County.

DRAINAGE AREA. 68.5 square miles (measured on Hitchcock map).RECORDS AVAILABLE. August 18, 1922, to September 30, 1926.GAGE. Water-stage recorder on right bank 60 feet above bridge; inspected by

employee of Keene Gas & Electric Co.DISCHARGE MEASUREMENTS. Made by wading or from highway bridge.CHANNEL AND CONTROL. Channel rough with steep slope. Control formed by

rocks and boulders near gage.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage re

corder, 8.33 feet at 10.30 a. m. April 25 (discharge, 1,490 second-feet); minimum stage, 1.17 feet at 5 a. m. July 3 (discharge, 5.4 second-feet).

1922-1926: Maximum stage recorded, that of April 25, 1926; minimum discharge about 1 second-foot October 6, 1922, and July 10, 1923 (water held back by dam).

ICE. Ice forms on rocks and along banks, occasionally affecting stage-discharge relation.

REGULATION. Flow affected by operation of mills at Gilsum. Several lakes and ponds above gage provide opportunity for storage, but little if any utili zation of these possibilities has been made.

ACCURACY. Stage-discharge relation changed, probably during high water April 25. Rating curves well defined below 70 second-feet and fairly well defined from 70 to 1,000 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying mean daily gage height to rating table with correction for effect of ice during winter. Records good.

Discharge measurements of Ashuelot River near Gilsum, N. H., during the year ending September 80, 1926

Date

Jan. 25... ...Apr. 29.. .......Apr. 29 _ ......

Gage height

Fed «2.49

5.365.34

Dis charge

Sec.-ft. 68

539484

Date

May 24 ____ .

Gage height

Feet 5.302.332.42

Dis charge

Sec.-ft. 509

5762

Date

Sept. 21. . ......Sept. 21.. --.--.

Gage height

Feet 1.331.292.05

Dis charge

Sec.-ft. 8.86.4

38.2

' Stage-discharge relation affected by ice.


Daily discharge, in second-feet, of Ashuelot River near Gilsum, N. H. t for the year ending September SO, 1926

Day

1 ________2... ............3...............4..... _ . ___ .5 _________ .

6.. .............7...............8...............9...............10 __ _

11..............12 ____ . ____13.... ....... ....14 15 ..... ......

16 _17 18 .19 .........20.

.21 _ ............22 23 24 25 ..........

26 ___ ... ___ .27 . ..-28 29 30 31-... .......

Oct.

1921313032

4840233764

4746444840

3351605754

4444392462

15011792816752

Nov.

47

493944

474067147126

9585

202455410

610390290212

177142135113

8591151150163

Dec.

173133121

310

480555

310227

2021 P\Q

1241101(\A

10110198QA

83

8080798170

73QQ

133197

212

Jan.

220ooft

019

200

25082

212

2051QO

187173114

11772150745

220103908478

645957645940

Feb.

4338373636

3636373837

35

333333

OA

323551

105

9875564337

585351

Mar.

4948464443

4048121

112

9070585049

4444444444

46526180123

145142134123112110

Apr.

9580868289

93100124220310

340310300350467

410370330330310

330635

1,0601,1201,440

1,080768582522466

May

402402558594488

363291242189175

162

137118104

100101898090

8677666451

484644424026

June

4047856860

5456474339

3435262154

8364646857

5542423429

5164483437

July

1625131617

1928252537

6142406948

3431223230

2016161720

172122172424

Aug.

1720352022

2020161426

1711151716

1420171317

1415162616

161316151626

Sept.

1424172617

2134252434

1713161718

1416151516

1218201214

1116191110

NOTE . Stage-discharge relation affected by ice Dec. 16 to Jan. 17, and Jan. 22 to Apr. 6; discharge based on gage height corrected on basis of one discharge measurement, observer's notes, weather records, and records from adjacent drainage basins.

Monthly discharge of Ashuelot River near Gilsum, N. H., for the year endingSeptember SO, 1926


Month

May..... .....................................

July... . .- .

September..-.. __________ ____ ...


Maximum

150 610 555 745 105 145

1,440 594 85 69 35 34

1,440

Minimum

19 39 73 40 32 40 80 26 21 13 11 10

10

Mean

51.5 176 174 171 45.4 75.5

427 175 49.4 27.2 17.9 17.9

117

Persquare mile

0.752 2.57 2.54 2.50 .663

1.10 6.23 2.55 .721 .397 .261 .261

1.71

Run-off in inches

0.87 2.87 2.93 2.88 .69

1.27 6.95 2.94 .80 .46 .30 .29

23.25


ASHUELOT RIVER AT HINSDAIE, N. H.

LOCATION. At lower steel highway bridge a quarter of a mile below dam ofFisk Paper Co. and \% miles above mouth of river at Hinsdale, CheshireCounty.

DRAINAGE AREA. 440 square miles. RECORDS AVAILABLE. February 22, 1907, to December 31, 1909, and July 11,

1914, to September 30, 1926.GAGE. Chain gage on downstream side of bridge; read by Mrs. Agnes Golden. DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Channel covered with coarse gravel and boulders.

Control is a short distance below gage; practically permanent. EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.79 feet at

4 p. m. April 26 (discharge, 4,140 second-feet); minimum stage, 2.02 feet at8 a. m. August 30 (discharge, 11 second-feet).

1914-1926: Maximum stage recorded, 9.98 feet March 29, 1920 (dis charge by extension of rating curve, 8,940 second-feet); minimum stage,1.87 feet August 12, 1923 (discharge, 5 second-feet).

ICE. Ice forms below bridge on control, affecting stage-discharge relation forshort periods.

REGULATION. The mills immediately above station are operated continuouslyexcept Sundays and holidays, but cause little fluctuation in stage. Severalreservoirs and ponds on river and tributaries have some effect on distributionof flow.

ACCURACY. Stage-discharge relation probably permanent except when affectedby ice. Rating curve well defined. Gage read to hundredths twice daily.Daily discharge ascertained by applying mean daily gage height to ratingtable. Records fair.


discharge relation affected by ice).May 25, 1926: Gage height, 3.53 feet; discharge, 354 second-feet. September 22, 1926: Gage height, 2.90 feet; discharge, 112 second-feet.

Daily discharge of Ashuelot River at Hinsdale, N. H., for the year ending SeptemberSO, 1926

Day

1 .... .....2. 3. . ......... .4 _ . _____ ..5. ... ........

6.. .... ......7 8. ........9....... ........10

11. .......12 13 14 15

16 17 18 1020

Oct.

15516716716765

291197124268200

206223239203209

209239247

227

Nov.

239Qlrt

247164197

239219

375430

203209239900

1,000

1,3201,7901,550

950

Dec.

490660730770

1,210

1,4301,5501,3201,050770

555555375310315

3101,000520

264

Jan.

1,000RQK

460400Q7K

350345340330

227310460400350

278286235

1,9102.580

Feb.

490dfid430460Ann

430400

400460

520490400330191

200215239

350

Mar.

430430400430460

460400460555695

660660625590520

460400400

460

Apr.

1,050QKft

770770

1,050

1,0501,1001,4302,3009 79fl

2,5802,4402,1702,0402,300

2,3002,1701,9101,6701.550

May

1,7901,6101,5501,6101,610

1,4901,1001,000855900

855770730625660

430590430490590

June

268340430490400

400695350350350

291310145115278

520460350315273

July

320179173115179

98132155122158

325300273185296

239203132191260

Aug.

155115197206231

1911028179111

10296106145161

18515516116768

Sept.

209132139129124

5810665197108

1679813479124

1241201113565


Daily discharge of Ashuelot River atHinsdale, N. H., for the year ending September80, 1926 Continued

Day

21.... ........ ...22..............23 24....... ........25.

26 ...........17 28 29 30 31

Oct.

2312392432734nn

460660375350320oq e

Nov.

695855810<;ofi520

1,260590490430

Dec.

1674305204fift350

/ton695

1,2101,6701,610i 4/*n

Jan.

1,790730660660695

770660520555KOA

Feb.

430430430460520

430460460

Mar.

490555900

1,0501,320

1,7901,6701,4301,0001,2601,210

Apr.

1,4901,5502,4403,1403,570

4,0102,8602,3002,1702,040

May

660555400430400

340375340310260243

June

247235278191191

179260350273197

July

223176155278188

981157975

142120

Aug.

9498

102215132

15558927235

118

Sept.

75124102102115

15417315013491

NOTE. Discharge Dec. 22 to Jan. 18 and Jan. 24 to Mar. 17 determined from gage height corrected for effect of ice by means of one discharge measurement and study of climatological data, observer's notes, and discharge records of near-by stations.

Monthly discharge, in second-feet, of Ashuelot River at Hinsdale, N. H., for the year ending September SO, 1926


Month

February ____________________

April..........................................

July.


Maximum

660 1,790 1,670 2,580

520 1,790 4,010 1,790

695 325 231 209

4,010

Minimum

65 164 167 227 191 400 770 243 115 75 35 35

35

Mean

255 630755 637 396 731

2,000 774 318 183 129 118

576

Per square mile

0.580 1.43 1.72 1.45 .900

1.66 455 1.76 .723 .416 .293

2.68

1.31

Run-off in inches

0.67 1.60 1.98 1.67 .94

1.91 5.08 2.03 .81 .48 .34 .30

17.81

OTTER BROOK NEAR EEENE, N. H.

LOCATION. At highway bridge on road from Keene to Sullivan, three-tenths mile above Ferry Brook, 3% miles above confluence with Minnewawa Brook, and zyz miles northeast of Keene, Cheshire County.

DRAINAGE AREA. 39.5 square miles (measured on Hitchcock map).RECORDS AVAILABLE. October 1, 1923, to September 30, 1926.GAGE. Water-stage recorder on left bank, downstream side of bridge; inspected

by J. H. Jackson.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed covered with coarse gravel and boulders; pool

opposite gage. Control is riffle a short distance below gage.EXTREMES OF DISCHARGE. Maximum discharge during year estimated at 440

second-feet April 25 (record missing); minimum stage from water-stage recorder, 2.11 feet from 2 to 6 p. m. September 20 (discharge, 5.7 second- feet).

1923-1926: Maximum stage recorded, 5.98 feet April 7, 1924 (discharge, 1,440 second-feet); minimum discharge, 2 second-feet August 24, 25, and November 17, 1924.


ICE. Stage-discharge relation affected by ice.REGULATION. Two small mills above gage, the nearest at East Sullivan, 3 miles

upstream, cause slight diurnal fluctuation in discharge. Several lakes and ponds above gage provide opportunity for storage, but little if any utiliza tion has been made of these possibilities.

ACCURACY. Stage-discharge relation permanent except when affected by ice. Rating curve well denned. Operation of recorder satisfactory except as noted under footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table. Records good except for estimated period and when stage-discharge relation was affected by ice, for which they are subject to considerable error.

The following discharge measurements were made:January 25, 1926: Gage height, 4.79 feet, 33.3 second-feet (stage-discharge

relation affected by ice.)April 29, 1926: Gage height, 3.60 feet, 242 second-feet. May 25, 1926: Gage height, 2.57 feet, 33.3 second-feet.

Daily discharge, in second-feet, of Otter Brook near Keene, N. H. t for the year endingSeptember 30, 1926

Day

l... ....... .....2...............3...............4... ............ 5 ............

6... ............7...............8...............9...............

10...............

11-. ..-. .12...............13 ............14...............15...... ......

16 ............17 ..........18...............19...... . ........20

21 22. 23...............24 ..........25

26...............27... ............28 ......29..... ...... 30. ........31.. .............

Oct.

1212139.19.6

1815141427

1311131516

1520131511

7.97.18.37.924

452217151312

Nov.

11109.6107.9

9.19.6173834

27229411980

186130856051

4439363442

2743696265

Dec.

756560

205273

321298235194150

-12085655250

4748485052

5560554540

373850555560

Jan.

7570554555

6055505035

2540383538

302555

300200

10540353332

353840383530

Feb.

2823232222

2020232020

2323222018

2022222727

3032353230

303030

Mar.

3030333230

2830606555

4540353332

3030303030

3235405065

757368606060

Apr.

6060585757

606575150190

300280250270290

250220185188160

165200280210440

390300260230214

May

186170191189151

128113988385

8176696559

5253524869

5849424937

343332302726

June

3236594941

3233343632

2825202449

5442342820

2426242622

3247473732

July

27IV161210

1218161546

14466494635

2722298054

3527302520

161312131616

Aug.

1416272921

161312119.6

9.110111110

9.19.19.18.77.9

7.57.17.17.98.7

9.6119.68.37.57.1

Sept.

7.17.57.57.17.1

9.120128.77.1

6.46.47.91112

1212127.97.9

1211121916

1111151414

NOTE. Stage-discharge relation aflected by ice Nov. 30 to Dec. 3 and Dec. 10 to Mar. 30. Gage-height record missing Oct. 28-31 and Jan. 25 to Apr. 29. Daily discharge for these periods ascertained from study of weather records, and observer's weekly gage readings and notes, one discharge measurement and com parison with discharge records at three near-by stations.

86 SURFACE WATER StJPPLY, 1926, PART I

Monthly discharge of Otter Brook near Keene, N. H., for the year ending September 80,A926


Month

May. ....--.................................

July..-..............-.. ...................

The year ____________ . .........


Maximum

45 186 321 300

35 75

440 191

59 144 29 20

440

Minimum

7.1 7.9

37 25 18 28 57 26 20 10 7.1 6.4

6.4

Mean

15.0 49.0 98.2 58.0 24.8 43.4

197 78.3 34.2 31.1 11.4 10.8

54.3

Persquare mile '

0.380 1.24 2.49 1.47 .628

1.10 4.99 1.98 .866 .787 .289 .273

1.37

Run-off in inches

0.44 1.3& 2.87 1.70 .65

1.27 5.57 2.2S .97 .91 .3$ .30

is. er

SOUTH BRANCH OF ASHUELOT RIVER AT WEBB, NEAR MARLBORO, N. H.

LOCATION. At highway bridge on State road between Keene and Troy, one- fourth mile from Webb railroad station, Marlboro, Cheshire County.

DBAINAGE AREA. 36.6 square miles.RECOBDS AVAILABLE. November 16, 1920, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by W. L. Goodell.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Large pool opposite gage; water swift above and

below. Control is formed by boulders 50 feet below gage; probably permanent

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 4.02 feet at 3 p. m. April 25 (discharge, 565 second-feet); minimum discharge, 0.4 second-foot September 15-17.

1920-1926: Maximum stage recorded, 5.53 feet February 12, 1925 (dis charge, about 1,150 second-feet); minimum discharge, that of September, 1926.

ICE. Stage-discharge relation affected by ice.REGULATION. Distribution of flow affected by operation of mills at Troy, 4 miles

upstream; several small storage ponds on main stream and tributaries above gage.

ACCURACY. Stage-discharge relation not permanent. Rating curves well defined below 200 second-feet and fairly well defined between 200 and 500 second-feet. Operation of water-stage recorder satisfactory except for periods indicated in footnote to daily-discharge table. Daily discharge ascertained by use of discharge integrator, with correction for effect of ice during winter, except where mean gage height could be obtained accurately by inspection and for period January 28 to March 7, when discharge was estimated. Records good for open-water period and poor for winter.

Discharge measurements of South Branch of Ashuelot River at Webb, near Marlboro, N. H., during the year ending September SO, 1926

Date

Jan. 24.........Apr. 30.. .......

Gage height

Feet "2.88

2.54

Dis charge

Sec.-ft. 39.0

140

Date Gage height

Feet 2.612.12

Dis charge

Sec.-ft. 16474

Date

Sept. 22........

Gage height

Feet 0.89

Dis charge

Sec.-ft. 0.56



Daily discharge, in second-feet, of South Branch of Ashuelot River at Webb, near Marlboro, N. H., for the year ending September SO, 1926

Day

1 ________2.. . ............3.... ...........4...............5.....:.. _ ..6 ............7. __ . .........8.. .. ........9.. ___ . .......10-.. .........

11.. . ...i..12 13...............14 ___ . .........15 ..........

16 ..........17 .... ......18 19 ...........20 .........

21 22...............23.. .............24...............25... ............

26...............27 ..........28...............29.............30..... ..........31 .........

Oct.

1.21.21.31.4

15

111.51.5

122.9

178.0161712

1.711102416

121.75.05.0

38

844426262412

Nov.

28so213.613

3.615324329

15

417181

194146796254

4841322517

8.0326913

112

Dec.

140

38120140

1521307857

120

235106554658

65991226258

7569647281

9197112132124

. 138

Jan.

1169791116112

6495525852

69302946

25164422362

3727313949

615845353235

Feb.

3229282625

2424242424

2526231913

1316192530

3535353637

363131

Mar.

3235373839

3640626159

5246414139

3735353536

3946566878

898072646274

Apr.

8374686184

88.83137275

323259221-253272

226192149145120

126213323297471

312192159168145

May

114111

10089

77K1

516160

6153424033

3547503782

7033294037

282416201712

June

3207

563822

5444343325

1010101719

3016101314

1713201022

181618147.0

July

5.08.0107.028

261717105.0

2124128.07.0

5.0125.0207.0

7.05.0164.017

9.0115.01.6104.0

Aug.

1.210262810

101.0.9.7.7

1.0106.0.7

3.0

111.31.0.9

10

.9

.91.07.01.0

5.0145.0.5

12.5

Sept.

0.5

10.6.5

1.2121.2

109.0

.6

.512.6.4

.4

.4

.5

.6

.6

.6

.6

.6145.0

.95.01.04.0.7

NOTE. Stage-discharge relation affected by ice Nov. 30 to Dec. 2 and Dec. 15 to Apr. 3. Daily discharge ascertained by means of one discharge measurement, weather records, observer's notes, and by comparison with records of flow in the adjacent drainage basins. Recorder not in operation Jan. 28 to Mar. 7; discharge estimated by comparison with records from Ashuelot River at Hinsdale and near Qilsum.

Monthly discharge of South Branch of Ashuelot River at Webb, near Marlboro, N. H,, for the year ending September SO, 1926


Month

November ____________________December. ....................................

March .........................................April..........................................

July ........... ... ............ .


Maximum

84 194 235 223

37 89

471 120 56 28 28 14

471

Minimum

1.2 3.6

38 16 13 32 61 12 7.0 1.6 .5 ,4

.4

Mean

14.8 45.8 96.8 61.6 26.6 50. 5 '

194 52.9 22.6 11.1 5.85 3.15

48.8

Persquare mile

0.404 1.25 2.64 1.68 .727

1.38 5.30 1.45 .618 .303 .160 .086

1.33

Run-off in inches

0.47 1.40 3.04 1.94 .76

1.59 5.91 1.67 .69 .35 .18 .10

18.10


MILLERS RIVER NEAR WINCHENDON, MASS.

LOCATION. At steel highway bridge known as Nolans Bridge, half a mile below mouth of Sip Pond Brook and 2 miles west of Winchendon, Worcester County.

DRAINAGE AREA. 80.0 square miles. RECORDS AVAILABLE. June 5, 1916, to September 30, 1926.GAGE. Water-stage recorder on right bank below highway bridge; inspected by

Robert Sawyer.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Channel covered with gravel and alluvial deposits.

Control for low and medium stages is gravel bar 80 feet below gage.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage re

corder, 7.37 feet at 4.45 p. m. April 26 (discharge, 902 second-feet); mini mum discharge, 10 second-feet September 16-20 (water held back by dams).

1916-1926: Maximum discharge recorded, about 1,280 second-feet June 25, 1922; minimum discharge recorded, practically zero at 5 a. m. Septem ber 20, 1918, and at 9 p. m. January 14, 1925 (water held back by dams).

ICE. Ice cover usually forms during the winter and, owing to large diurnal fluctuation caused by operation of power plants near Winchendon, water fre quently overflows ice.

REGULATION. The distribution of flow is affected by operation of power plants at and below Winchendon and by storage in Lake Monomonac and other reservoirs.

ACCURACY. Stage-discharge relation not permanent. Rating curves fairly well defined. Operation of water-stage recorder satisfactory except for periods indicated in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table or by discharge integrator with corrections for effect of ice during winter. Records good for open-water periods when water-stage recorder was in operation and fair for other times.

Discharge measurements of Millers River near Winchendon, Mass., during the ye"ar ending September 30, 1926

Date

Oct. 5.--. Jan. 22.. .......

Gage height

Feet 3.283.36

"5.22" 5.43

Dis charge

Sec.-ft.87

100301300

Date

Feb. 8.. ........Apr. 30... ......

Gage height

Feet "5.495.01

4.24

Dis charge

Sec.-ft. 242385333277

Date

July 14.. __ ..July 14.........

Gage height

Feet 4.523.543.182.82

Dis charge

Sec.-ft. 3191416119.1

" Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Millers River near Winchendon, Mass., for the year ending September 30, 1926

Day

12......... _ ...3.... ....... ....4... __._.. ......5.... ..... ......

6 - .. 7....... _ .....8-_.__ ... ....9.. ___--- ...10.. .............

Oct.

5462402455

8368768295

Nov.

421488696108

1125050126108

Dec.

116110150220

420375320265215

Jan.

615434120160

1461181508872

Feb.

70144150180172

12853162194225

Mar.

172174166178200

182180260235235

Apr.

225148114128200

230235295385470

May

235158230170160

1581788048124

June

8610211011274

247197108112

July

9484501516

3858595838

Aug.

1736625366

543014.2048

Sept.

39.44607536

' 4044201422


Daily discharge, in second-feet, of Millers River near Winchendon, Mass., for the year ending September 80, 1926 Continued

Day

11.. .......... ...12...............13..... .......14... -... ..15

16 ............17-. -......18....--- ...19 20

21...........22 23 24 25

26... __ .. _ ...27 .28 29 30 . 31

Oct.

2250645963

6876457484

8578795245

11815411610615660

Nov.

102104152

120

250200172144

80431169288

366411046106

Dec.

22018080116150

1281261088928

13417416016458

16096190158152140

Jan.

70621103270

8388132226295

26021015067144

1441421401324018

Feb.

22094ft235240225

235235

128178178162

186170136

Mar.

250245105154215

205

' 178194220

178220240220240

2952751842752459dfl

Apr.

430475470AfiK

405

OQK

410530420370

275305380380585

825650460435315

May

140-IAA

140136108

36138136122134

12811446134126

10077100401715

June

10853168696

9896903816

5086778071

4215889896

July

1859526462

8038177994

7688754327

667886837430

Aug.

4768643021

5863603758

3817344661

587632194244

Sept.

1414121218

1010101010

2011122022

1517121211

NOTE. Stage-discharge relation affected by ice Jan. 4 to Mar. 19; daily discharge based on gage heights corrected for effect of ice by means of three discharge measurements, hydrograph, observer's notas, and weather records. Operation of water-stage recorder unsatisfactory Oct. 14-17, Nov. 18, Jan. 15-19, Feb. 9-16, Feb. 25 to Mar. 5, Mar. 19-22, and Apr. 19; daily discharge based on hydrograph, observer's notes, and weather records.

.Monthly discharge of Millers River near Winchendon, Mass., for the year endingSeptember SO, 1926


Month

April..........................................

June. ___________________ . __ .July.........................................August.. ___________________ _.


Maximum

156 250 420 295 275 295 825 235 112 94 76 75

825

Minimum

22 36 28 18 53

154 114

15 15 15 14 10

10

Mean

74.0 111 170 117 184 214 380 118 76.5 58.0 44.3 22.2

130

Per square mile

0.925 1.39 2.12 1.46 2.30 2.68 4.75 1.48 .956 .725 .554 .278

1.62

Run-off in inches

1.071.55 2.44 1.68 2.40 3.09 5.30 1.71 1.07 .84 .64 .31

22.10

MILLERS RIVER AT ERVING, MASS.

LOCATION. One-fourth mile below dam at Erving, Franklin County, 8 miles above confluence with Connecticut River, and below all important tribu taries.

DRAINAGE AREA. 372 square miles.RECORDS AVAILABLE. August 1, 1914, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by Napoleon Lemire.DISCHARGE MEASUREMENTS. Made from cable or by wading.CHANNEL AND CONTROL. Channel covered with coarse gravel and boulders;

control section a short distance below gage is practically permanerit.


EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re corder, 4.63 feet at 11 a. m. April 10 (discharge, 3,090 second-feet); minimum stage, 0.93 foot at 7.30 p. m. September 6 (discharge, 6 second-feet; water held back by dams).

1914-1926: Maximum stage recorded, 5.74 feet March 28, 1920 (dis charge, 5,800 second-feet); minimum discharge, practically zero at various times during 1915 and 1916 when water was held back by dams above gage.

ICE. River freezes over below gage during some winters.REGULATION. Distribution of flow affected by operation of various power plants

and storage reservoirs above station.ACCURACY. Stage-discharge relation permanent. Rating curve well defined.

Operation of water-stage recorder not satisfactory as explained in footnote to daily-discharge table. Daily discharge ascertained by discharge inte grator or by applying mean daily gage height, obtained by inspection, to rating table. Corrections made for effect of ice during winter. Records good for open-water conditions and poor for estimated periods and period affected by ice.

Discharge measurements of Millers River at Erving, Mass., during the year endingSeptember SO, 1926

Date -

Oct. 3 .....Oct. 4.. ........Jan. 21...... ..

Gage height

Feet 2.061.283.67

Dis charge

Sec.-ft. 227

311.440

Date

Feb. 8.... ......

Gage height

Feet «3.46

3.34

Dis charge

Sec.-ft. 692

1,060

Date

July 16.. ....Sept. 6-. .......

Gage height

Feet 2.05.95

Dis charge

Sec.-ft. 236

7.4

« Stage-discharge relation affected byyice.

Daily discharge, in second-feet, of Millers River at Erving, Mass., for the year endingSeptember SO, 1926

Day

1 _ ............2...............3.. .............4...............5...............6...............7. ..S...... .........9...............10 . 11 . 12...............13 ...........14...............15....... ........16... ............17.. ....... ......18 19...............20 21 22 . .23 ...........24 25...............26...............27 28...............29...............30...... ....... 31- .. ..

Oct.

17417417411194fi

94ft

225200

205144325280260186325

305325213250260

200375520665615520430325

Nov.

23535533032031594n210

510430380575800535

1,2101,3401,110910810610450560

455280350510480505

Dec.

465

1,2101 ^fl

770780530590CAZ

450450455405245cnK670OCR

705505QAn

1,3301,270

375

Jan.

275174

9fin

345

240325350qcn

325one

280280375

1,3601,5001,360

915610490

> 680760585260

Feb.

295370*>7n

400

400

470505490

215

265

415490OA(\

345420465405415465350

Mar.

420350

00 C

qoe

375505

605605610

550490460430405430520615

860i ftdn1,2101,7101,6201,5301,4301,400

Apr.

1, 2501,130975948

1 2001,2501,4101,5902,2402,7102,7102,520

2,150

1,9001,8001,6601,5001,330

.1,1801 44n

1,9202,2402,1901,7101,490

May

1,100915880820720665620610476450515525520475505415

570510550

AAn

415400AKf)

385315

230

June

305430330

365

325265375350325280146325310350

325240144200210

230210

160205235285

July

250305205116

16212212611691205

2001501729560

310215205240

1fl4

40

182

210174

Aug.

104225205180

16429550646652116144913417015814414813088361441741661441449128150120

Sept.

11610412264118

19011011213813811

174144144138116691115011011650395015818091144

NOTE. Stage-discharge relation affected by ice Dec. 26 to Jan. 18 and Jan. 23 to Mar. 21. No gage-heigh, record Oct. 1-3, 5-8, 10-14, 16-19, 21-26, Oct. 28 to Nov. 7. Jan. 10-18, Feb. 12, 13, Mar. 6, 7, 14-19, June 5-7t 9-20, 27, 28, July 1-5, 9-12, July 31 to Aug. 3, Aug. 12-17, 23-31, Sept. 12-22, and 29-30. Daily discharge for these periods determined by comparison with records of flow of Swift and Ashuelot Rivers and from study of weather records.


Monthly discharge of Millers River at Erving, Mass., for the year endingSeptember SO, 1926


Month

April. .........................................May ___ .. ________ . _ . ______ ...

July ...............-. ..................... .


Maximum

665 1,340 1,560 1,500

515 1,710 2,710 1,100

430 310 295 190

2,710

Minimum

111 205 245 174 205 350 948 190 144 40 28 8

8

Mean

289 532 750 552 386 739

1,700 536 276 173 128 94.9

513

Persquare mile

0.777 1.43 2.02 1.48 1.04 1.99 4.57 1.44 .742 .465 .344 .255

1.38 .

Run-off in inches

0.90 1.60 2.33 1.71 1.08 2.29 6.10 1.66 .83 .54 .40 .28

18.72

SIP POND BROOK NEAR WINCHENDON, MASS.

LOCATION. 500 feet above highway bridge one-fourth mile below Massachusetts- New Hampshire State line, \% miles below outlet of Sip Pond, and 3 miles northwest of Winchendon, Worcester County.

DKAINAGB ABEA. 18.8 square miles.RECORDS AVAILABLE. May 29, 1916, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by Mary N. Greenall.DISCHARGE MEASUREMENTS. Made from footbridge or by wading.CHANNEL AND CONTROL. Channel fairly uniform in section in vicinity of gage;

control clearly defined.EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re

corder, 8.23 feet at 10 p. m. April 25 (discharge, 193 second-feet); minimum stage, 5.02 feet at 9 a. m. October 2 (discharge, 2.1 second feet).

1916-1926: Maximum stage recorded, 9.34 feet May 23, 1919 (discharge by extension of rating curve, 339 second-feet); minimum discharge, 0.1 second-foot August 25, 1924.

ICE. Stage-discharge relation occasionally affected by ice.REGULATION. Distribution of flow considerably affected by operation of mills at

State Line, N. H., and by storage in Pearly and Sip Ponds.ACCURACY. rStage-discharge relation not permanent. Rating curves well de

fined. Water-stage recorder operated satisfactorily except for periods noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table with corrections for effect of ice during winter. Records good.

Discharge measurements of Sip Pond Brook near Winchendon, Mass., during the year ending September SO, 1926

Date

Oct. 5..........Jan. 23 ____

Gage height

Feet 5.32

«6.88

Dis charge

See.-ft. 6.1

56

Date

Feb. 8 ....

Gage height

Feet «6. 19

6.90

Dis charge

Sec.-ft. 26 282

Date

July 13. .....

height

Feet 6.905.80

Dis charge

Sec.-ft. 8118.6

'Stage-discharge relation affected by ice. 63435 30 7

92

Daily dii


, in second-feet, of Sip Pond Brook near Winchendon, Mass., for the year ending September SO, 1926

Day

1 ___ .__. 2 . ___ «.. _ . _ ......4 5. __ .... 6 7 ____ .....8.. .... ... ...9 10-.-.. . ......11 . . __ 12...... ...13 ___ ..... .14 __ ... . 15 __16 17 18. ___ ........19 ......20 _ ........21...............22...............23 __ ......24.. __ .........25 26.... ......27 _ ...... _ 28 29........ .......30... ___ ......31 _ . __ ......

Oct.

2.24.62.82.64.14.65.33.45.74.83.83.43.13.1

. 4.34.97.85.36.45.66.45.55.79.57.0171823222116

Nov.

7.0139.8

111010127.014161416232527435856463633243328291618263132

Dec.

303132426369696044413429253130231918158.518273434-25

283022232116

Jan.

14115.5

111216132114101612151256692650473843282319201820158

Feb.

16151215121261412232322155

1616141413141025201717201715

Mar.

21161514231413212826292525232023192017151121202634465059747268

Apr.

666353526569598610813415616615314014814013211210492869011213216618514812010292

May

78706760554643373236292927262527302726272927192621212020207.06.9

June

17202221207.22022201616176.4161316126.9144.9121613134.55.05.9

131310

July

9.0107.83.93.69.29.57.87.87.25.99.89.5129.25.35.64.2169.89.89.08.87.24.9129.57.07.0

6.3

Aug.

4.5129.85.64.54.25.25.08.86.46.3

14119.85.26.7109.59.08.54.13.96.95.66.69.06.27.85.56.76.0

Sept

5.2A. O4.55.2484.66.68.58.57.06.43.86.76.26.33. a4.13.93.87.87.04.26.77.04.14.15.ft4.24.13.9-

NOTE. Stage-discharge relation affected by ice Jan. 8 to Mar. 28; discharge based on gage heights cor rected for effect of ice on basis of two discharge measurements, observer's notes, and temperature and pre cipitation records. Gage-height record missing Mar. 28-31 and July 25-31; discharge estimated.

Monthly discharge of Sip Pond Brook near Winchendon, Mass., for the year endingSeptember SO, 1926


Month i

April..... ...... _ ..... ........ ....... .

July


Maximum

2358 69 50 25 74

185 78 22 16 14 8.5

185

Minimum

2.2 7.0 8.5 5.5 5

11 22 6.9 4.5 3.6 3.9 3.8

2.2

Mean

7.71 24.1 32.0 18.3 15.4 28.6

111 32.7 13.8 8.09 7.24 5.45

25.3

Per square mile

0.410 1.28 1.70 .973 .819

1.52 5.90 1.74 .734, .430 .385 .290

1.35

Run-off in inches

0.471.43 1.96 1.12. .85-

1.75 6.68. 2.01 .82- .50-

! .44 .32

18.25-

PRIEST BROOK NEAR WINCHENDON, MASS.

LOCATION. At highway bridge 3 miles above confluence with Millers Riverand 3^ miles west of Winchendon, Worcester County.

DBAINAGE ABEA. 18.8 square miles. RECOBDS AVAILABLE. May 25, 1916, to September 30, 1917; July 18, 1918, to

September 30, 1926. GAGE. Sloping staff on left bank 200 feet below highway bridge; read by FrdtL

E. Terry.


DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Channel above station straight with fairly uniform

section and gravel bottom. Control formed by foundation of old dam 30feet below gage.

EXTREMES OF DISCHARGE. Maximum discharge recorded during year, 20&second-feet at 5.30 p. m. April 12; minimum discharge, 0.9 second-foot at5 p. m. September 21 and at 7 a. m. September 22.

1916-1926: Maximum discharge, approximately 700 second-feet March*28, 1919; minimum discharge, 0.4 second-foot August 21, 1921, and several:days in December, 1924, and January, 1925.

ICE. Brook freezes over at gage but usually remains open at control; stage-discharge occasionally affected.

REGULATION. Flow not appreciably affected by regulation. ACCURACY. Stage-dischaige relation permanent except when affected by ice.

Rating curve fairly well defined below 150 second-feet. Gage read tohundredths twice a day. Daily discharge ascertained by applying mean*daily gage height to rating table with corrections for effect of ice during:winter. Records good for open-water period and fair for ice period.

Discharge measurements of Priest Brook near Winchendon, Mass., during the yearending September SO, 1926

Date

Oct. 5. Do __ .. ...

Gage height

Feet 2.492.48

Dis charge

Sec.-ft. 3.33,2

61

Date

Feb. 8 .

Gage height

Feet "3.54 3.03

3.72

Dis charge

Sec.-ft. 5313.180

Date

July 14..

Gage height

Feet 3.722.63

Dis charge

Sec.-ft.. 786.01


Daily discharge, in second-feet, of Priest Brook near Winchendon, Mass., for the year ending September SO, 1926

Day

1-.... ......2...... .........3. ........ ...4.... _ .... ....5.... ...........6 . .... . 7.... ... _ ..8.... ... .....9 10 11. ___ -12..... .. ...13 14 15. _______ --16 17 18 19 20..... _ . 21 ___ .22 .. _ ... 23 . 24 25.... _ ... _ ..26- _ ..........27 . 28 29. 30 31 . __ ......

Oct.

8.5108.56.58.56.02.99.25.614138.0134.03.71511115.68.5108.08.05.616341815138.510

Nov.

9.210107.29.210121620161313273226345456443332242421172014283027

Dec.

213636547510210292725452363644271616161618183333483638171413813

Jan.

81212881381411118811138688581151026756321912108

111011

Feb.

101310108101412811118811118109

13111114172222232329

Mar.

28191818162318222950393433292728272519'28232331466287115102878467

Apr.

605349535167786213517018518517013514212113510296967093128149177185135108111108

May

786253463936282822201814222522221928311914221416161418126.79.210

June

1415191516131212151812136.73.712119.21011116.74.03.73.73.73.7128.03.74.0

July

6.73.73.73.73.73.73.73.73.72.4155.23.75.24.04.03.02.84.84.02.62.33.23.42.62.01.61.41.63.22.4

Aug.

2.01.53.93.32.01.52.62.21.61.11.22.04.44,01.71.62.23.22.42.74.42.11.96.02.72.45.02.13.72.212

Sept.

2.02.12.11.41.42.03.0-2.42. 02.4l.ft-1.5!.& 1.5»1. *l.»1.11.21.2Tl.O*1.21.0»'1.52. P2.0*

2.62.0=2.11.8-1.8-

NOTE. Stage-discharge relation affected by ice Dec. 26 to Jan. 19 and Jan. 23 to Mar. 24; discharge based on gage height corrected for effect of ice on basis of two discharge measurements, observe*'s notes, weather records, and records of flow in adjacent drainage basins.

SUEFACE WATER SUPPLY, 1926, PART I

Monthly discharge of Priest Brook near Winchendon, Mass., for the year endingSeptember 80, 1926


Month

April

July


Maximum

3456

102 115 29

115 185 78 19 15 12 3.0

185

Minimum

2.9 7.2 8 6 8

16 49 6.7 3.7 1.4 1.1 1.0

1.0

Mean

10.3 23.0 38.5 22.1 13.1 40.5

114 25.3 10.1 3.77 2.95 1.73

25.4

Persquare mile

0.548 1.22 2.05 1.18 .697

2.15 6.06 1.35 .537 .201 .157 .092

1.35

Runoff in inches

0.63 1.36 2.36 1.36 .73

2.48 6.76 1.56 .60 .23 .18 .10

18.35

EAST BRANCH OF TULLY RIVER NEAR ATHOL, MASS.

LOCATION. At highway bridge half a mile below mouth of Lawrence Brook and3% miles north of Athol, Worcester County.

DRAINAGE AREA. 50.2 square miles.RECORDS AVAILABLE. June 13, 1916, to September 30, 1926. GAGE. Vertical staff on downstream side of right abutment; read by W. A.

Thompson.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Two channels under bridge, one channel above; at

high and medium stages there are two channels from bridge to control.Control well defined by rocks and boulders at foot of island.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 3.18 feet at5 p. m. April 10 (discharge, by extension of rating curve, 480 second-feet);minimum stage, 0.20 foot at 5 p. m. September 16 (discharge, 2.0 second- feet).

1916-1926: Maximum stage recorded, 4.2 feet March 29, 1920 (discharge,by extension of rating curve, 1,000 second-feet); minimum stage, that ofSeptember 16, 1926.

ICE, River freezes slightly along banks, but stage-discharge relation seldomaffected.

DIVERSIONS. Half a mile below station water is at times diverted through acanal into Packard Pond. The following measurement of this diversionwas made: January 22, 1926, 17.9 second-feet.

REGULATION. Flow not seriously affected by regulation. ACCURACY.. Stage-discharge relation permanent; not affected by ice. Rating

curve waell defined below 300 second-feet. Gage read to hundredths twice . a day except from December 1-18 when gage was read once a day. Daily

discharge ascertained by applying mean daily gage height to rating table,Hecords excellent.

Discharge measurements of East Branch of Tully River near Athol, Mass., during the year ending September 80,

Date

Oof 4.Jan. 22

Gage height

Feet 0.62

"2,42

Dis charge

Sec.-ft. 10.3

192

Date

Do....... -.

Gage height

Feet 2.212.21

Dis charge

Sec.-ft. 158156

Date

July 15

Gage height

Feet 0.69

Dis charge

Sec.-ft. 13.1

; Stage-discharge relation aflected by ice.

CONNECTICUT EIVEE BASIN 95

Daily discharge, in second-feet, of East Branch of Tully River near Athol, Mass., for the year ending September SO, 1926

Day

1 2...............3...............4...............5

6 ..7...............8... ............910-....--........

11 12 . IS...............14 15

16 17 18. . .19 20

21

23 - 24 25.... .......

26 27 28 29. 30 31.. ...... ......

Oct.

5.75.76.69.79 K

119.59.59.721

2621191718

1821302624

2220181731

9193

624736

Nov.

2926242120

23242759

524258109107

242218168134

10684736355

5248819481

Dec.

696369126187

209227200170117

9875796554

4642413938

468612610983

746349413429

Jan.

2927272930

3439343227

2625242422

212122

222348

29221318511490

817762535147

Feb.

4846

4343

4241394041

4039383739

3839394049

506264

58

628894

Mar.

9486797066

576398137

162

123113

9179726970

84103130148

295320268218

Apr.

185168146148170

185191227351460

440400330316330

308290250211190

175173171269330

380322269221

May

175157137122110

9890837773

7171636255

5662595665

7164575041

343333322629

June

3232484744

3432323844

3829222026

3329262115

1445491513

1636292116

July

13119.08.87.5

8.57.86.65.55.3

1815111213

119.09.22517

118.87.56.46.0

4.84.23.54.46.27.1

Aug.

6.46.88.89.28.0

6.65.54.84.44.2

4.04.46.68.08.0

6.47.17.36.46.0

4.44.23.93.74.2

4.24.24.64.64.24.0

Sept.

3.43.2:2.9-

. a*2.6-

3.2*4.44.9'4.6"4.2"

4.0'3.73.22.92.6

2.22.32.32.3.2.3.

2L.&2.6-2.8.

. 3.2"3.9-

4.64.2'4.04.24.2

Monthly discharge of East Branch of Tully River near Athol, Mass., for the year ending September SO, 1926[Drainage area, 50.2 square miles]

Month

October.., ___________________

December...., ....... ....... .............

April....... ...... .... . May ..June _ , _________________ __ .July.... ...... ....... .... ....


Maximum

93 242 227 348 94

320 460 175 49 25 9.2 4.9

460

Minimum

5.7 20 29 21 37 57

146 26 13 3.5 3.7 2.2

2.2

Mean

26.8 77.7 88.8 75.1 48.8

135 260 71.4 29.9 9.45 5.66 3.33

69.3

Per square mite

0.534 1.55 1.77 1.50 .972

2.69 5.18 1.42 .596 .188 .113 .066

1.38

Run-off in inches

0.62 1.73. 2.04 1.73. 1.01 3.10 5.78 1.64 .66 .22" .13. .07

18.7*

MOSS BROOK AT WENDEIL DEPOT, MASS.

LOCATION. One-fourth mile above confluence with Millers River and one--fourth mile north of Wendell Depot, Franklin County.

DRAINAGE AREA. 12.2 square miles.RECORDS AVAILABLE. June 7, 1916, to September 30, 1926. GAGE. Sloping staff gage on left bank; read by Mary C. Eno. DISCHARGE MEASUREMENTS. Made by wading.

96 SURFACE WATER SUPPIiY/; 1926, PART I

CHANNEL AND CONTROL. Channel composed principally of ledge rock andboulders; control formed by large boulders 25 feet below gage.

..EXTREMES OF DISCHARGE. Maximum discharge recorded during year, about 1145 second-feet December 27 (stage-discharge relation.affected by ice); Hninimum stage, 0.89 foot September 17 and 20 (discharge, 0.6 second-foot).

1916-1926: Maximum discharge, 190 second-feet (by extension of rating curve) March 28, 1919, and June 22, 1922; minimum discharge, that of 1926.

ICE. Stage-discharge relation affected by ice during some winters. REGULATION. Flow not affected by regulation.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined between 1 and 70 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table with corrections for ice during winter. Records good.

Discharge measurements of Moss Brook at Wendell Depot, Mass., during the year ending September SO, 1926

Date

Oct. 3.. .... .Oct. 4..........

Gage height

Feel 1.271.26

Dis charge

Sec.-ft. 4.13.8

Date

Nov. 7.-.

Gage height

Feet 1 412.60

Dis charge

Sec.-ft. 6.9

67.8

Date

Feb. 7. . ........July 16.. .

Gage height

Feet 1.521.25

Dis charge

Sec.-ft. 9.94.3

Daily discharge, in second-feet, of Moss Brook at Wendell Depot, Mass., for the year ending September SO, 1926

Day

1 __ ...........2 _____ .... ...3...............45. ., .- .

6... .........7...... .........8 .... ........9..... _ .......10. ......... ..

11 .12 _____ .......-13 .......14...............15 ....... _

16 . 17 ..........18...............19...............^0....... _ .....

.21.. ......-.2223 24 -..--.......-25 _ _

26...............27...............28.. ....... ...... 29...............30 . ___ .....31 ___ .. __ ....

Oct.

2.42.74.34.35.7

6.54.63.75.0

- 10

8.05.74.84.24.6

5.27.06.66.86.3

5.95.04.84.314

573514119.98.0

Nov.

7.08.07.06.56.1

7.57.28.71815

109.2283522

fid.72432724

18

121112

1111304232

Dec.

2216184253

4842322724

20

131017

201 K

9.47.78.0

10324146so

4674.R

1301036420

Jan.

8.07.06.86.16.8

8.21010109.4

7.26.15.05.0A Q

4.64.67.0

12564

4327262317

141911121111

Feb.

11109.79.99.7

9.2Q Q9.79.48.9

8.78.98.07.07.5

. Q A

8.28.08.710

11119 A8.9Q A

161513

Mar.

1314141211

1013181919

2524201715 1312111213

18' 21

303945

586972574.Q48

Apr.

4138363945

48536386101

. 9686757068

6761544643

394<;494667

6559484337

May

3029272420

1817161412

1316141715

1417161316

181714109.2

8.4a n8.27.77.57.2

June

8.99.48.97.76.3

8.47.06.«

129.9

8.0

5.95.28 Q

9.28.07.25.4

4.64 65.94.94.0

5.68.05.95.2

-4.3

July

4.33.83.22.32.1

2.21 Q

1.71.41.4

8.46.34.97.05.4

4 0

3.62.9ao5.0

4.33.64.34.23.2

9 72.21.81.54.33.8

Aug.

3.23.27.04.93.8

3.22.52.72.42.0

1.82.85.94.44.8

4.35.24.33.42.7

2.11.82.23.79 7

3.74,02.92,41.81.3

Sept.

1.01.01.11.01.6

2.23.22.51.81.4

1.31.11.0.8.8

.7- .7V.O ..7.7

.81.01.32.21 8

1.61.21.61.61.3

NOTE. Stage-discharge relation affected by ice Dec. 11-20, Dec. 25 to Jan. 19, and Feb. 20 to Mar. 21. Daily discharge for these periods based on gage height corrected on basis of two open-water measurements, observer's notes, and weather records.


Monthly discharge of Moss Brook at Wendell Depot, Mass., for th& yetir endingSeptember SO, 1926


§ Month

October ___________________

April.... ................... ...................

July

The year.. ________________


Maximum

57 72

145 125

16 72

101 30 12 8.4 7.0 3.2

145

Minimum

2.46.1

. 7.7 4.6 7.0

10 36 7.2 4.0 1.4 1.3 .7

.7

Mean

8.95 20.6 36.6 16.9 9.77

26.2 57.1 15.3 6.92 3.74 3.33 1.33

17.2

Per square mile

0.734 1.69 3.00 1.39 .801

2.15 4.68 1.25 .567 .307 .273 .109

1.41

Run-off in inches

0.85 1.89 3.46 1.60 .83

2.48 5.22 1.44 .63 .35 .31 .12

19.18

DEERFIE1D RIVER AT CHARIEMONT, MASS.

LOCATION. 1 mile below Charlemont, Franklin County.DRAINAGE AREA. 362 square miles.RECORDS AVAILABLE. June 19, 1913, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by E. F. Spear.DISCHARGE MEASUREMENTS. Made from cable or by wading.CHANNEL AND CONTROL. Channel of coarse gravel and boulders; fairly uniform

section; control practically permanent. >'EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re

corder, 6.87 feet at 3.30 a. m. April 25 (discharge, 7,980 second-feet; water held back by storage reservoirs); minimum stage, 1.51 feet at noon September 13 (discharge, 50 second-feet; water held back by dams at power stations above gage).

1913-1926: Maximum stage recorded, 15.7 feet-July 8, 1915 (discharge by extension of rating curve, 45,000 second-feet); minimum stage, 0.70 foot June 17, 1921 (practically no flow; water held back by dams).

ICE. Since extensive regulation on river, stage-discharge relation seldom affected: by ice.REGULATION. Flow regulated by storage reservoirs at Somerset and Whiting-

ham, Vt. Several power plants above station cause diurnal fluctuation.ACCURACY. Stage-discharge relation changed slightly during high water in

April; not affected by ice. Rating curve well defined. Operation of water- stage recorder satisfactory except as noted in footnote to daily-discharge table. Daily discharge ascertained from recorder graph by means of dis charge integrator. Records excellent except for estimated periods, for which they are fair.

The following discharge measurements were made:January 19, 1926: Gage height, 3.61 feet; discharge, 1,520 second-feet.July 16, 1926: Gage height, 3.31 feet; discharge, 1,220 second-feet.


Daily discharge, in second-feet, of Deerfield River at Charlemont, Mass., for the yearending September SO, 1926

Day

1 ___ .........2..-.--.-.-.....3... .......... .-4.. ....... _ ...5 _ .--------...

6.... ...........7..............8..... .......9... .

10. ...........

11 12 ._ .......13 14...............15... ............

16...-..-..--....I?........ .18. _ .......19...............20 . -

21...............22..... ..........23...............24...............25.. ....

26 ..........27 .28...............29 ...........30 31...............

Oct.

810780770355550

570630610630520

176

660610680

700420245KQfl

520540660440740

1,520790740660620410

Nov.

235

760

850

770650700

1,560oflfl

950900

2,150

795

4,0501,6301,1701,0501 000

370940

1,0301,040

qje

885775285

1,190

Dec.

1,0301 98A

2 OK/1

1 9201 9fift

1,0801,010*

1,000630420

1,0101 240

1 190T Ofirt

1,200855605

9601,2701,170i i cn

1 9^fl

1,0701,030

7451,350i tdn1,380

Jan.

1 ifitn

3401 2001,500

1 4>tfl

1 3901 9^rt

ftf\n

9601 Qfitn

1,3401,340

1,210940

1 9*\fl

1,710930

8407554fi1i on

1,200

1,090i ocn

1,0701 080

490

Feb.

1,0801 4401,3801,3001,270

1,2804957Qfl

1,430

t J.Qrt1 4.00

1,450775

1,030

1,030

i 3301,5001 190

00rt

1 190

1,210

1 000Ton

Mar.

8709607007on

440

370176AQK

800

850

ocn4AK

34097fl

385

485570620

605

AAft

730750

1,020

1,110

420705685695

Apr.

630565AAf\

310615

6957Q5

1,0501,9801 840

1,6501,4401,460

9 fiofi

1,6401,280

1,060

1,7203,4405,2503,5305,030

2,5401,5201,5101,4301,450

May

1,0501,4602,1801,9501,120

885768

525575

695810

425

3207Q<;830875

455245795770

695620585370205255

June

640540840575260

1547109509407QC

795545475695950

72558550594 K

118

605940

1,020940

735365510710695

July

885875

f 570395370

775940

1,0201,110

775

385555585875

940

455865

1,100

1,040795895655445

920955

1,0601,020

830

Aug.

230760

735735

605500114520685

640675220160

660650600

585

30090

505465490

510270184475545

Sept.

620490370140106

270685455465225

24090

470545475

485555285114570

575645510330

120490485435400

NOTE. No gage-height record Dec. 19-31, Jan. 8, 9,11-19, 22, 23, Feb. 2, 3,8-10,13-17, Mar. 3, 9,10, and 13-18; daily discharge estimated from records at plant No. 4 at Shelburne Falls.

Monthly discharge of Deerfield River at Charlemont, Mass., for the year endingSeptember 80, 1926


Month

Oetobtr.. __ ........ _ ...

.TarmnrvFebruary. __________March ........................April.........................

June ______ ___ ..July..........................August .......................

The year ________


Maxi- imum

1,520 4,050 2,610 1,710 1,500 1,110 5,250 2,180 1,020 1,110

760 685

5,250

Mini mum

17« 235 420 190 305 176 310 205 118 245 90 SO

90

Mean

615 1,020 1,220 1,070 1,130

630 1,700

771 639 768 497 406

869

Gain or toss in storage in Somer

set and Davis Bridge

Reservoirs (millions of cubic-feet)

+59 +1,365

-336 -1,818 -2, 187

-158 +3,694 +1,826

-378 -1,666 -1,042

-615

-1, 256

Discharge correct ed (tar storage (second-feet)

Mean

637 1,547 1,095

391 226 571

3,125 1,453

493 146 108 169

829

Per square mite

1.76 4.27 3.03 1.08 .624

1.88 8.63 4.01 1.36 .403 .298 .467

2.29

Run-off in inches

2.03 4.76 3.49 1.24 .65

1.82 9.63 4.62 1.52 .46 .34 .52

31.08

CONNECTICUT RIVEB BASIN 99

WARE RIVER AT GIBBS CROSSING, MASS.

LOCATION. Between highway and electric railway bridges at Gibbs Crossing, Hampshire County, three-quarters of a mile above mouth of Beaver Brook and 3 miles below Ware.

DRAINAGE AREA. 201 square miles.RECORDS AVAILABLE. August 20, 1912, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by Marion G. Moore.DISCHARGE MEASUREMENTS. Made from electric railway bridge or by wading.CHANNEL AND CONTROL. Channel rough and subject to growth of aquatic veg

etation during summer. Control free from weeds and at ordinary stages well defined at section near gage; shifts occasionally; at high stages control is probably at dam at Thorndike, 4 miles below gage.

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 4.03 feet at 9 a. m. April 10 (discharge, 1,490 second-feet); minimum stage, 1.27 feet from 5 a. m. to 11 a. m. September 20 (discharge, 15 second- feet).

1912-1926: Maximum stage recorded, 6.25 feet April 8, 1924 (discharge, 2,950 second-feet); minimum discharge, 5 second-feet October 26, 1914 (water held back by dams).

ICE. River usually freezes over, and stage-discharge relation is affected by ice during most winters.

REGULATION. Flow affected by operation of mills at Ware, which at low stages causes a large variation in discharge on days when mills are in operation, and a low discharge on Sundays and holidays.

ACCURACY. Stage-discharge relation permanent except when affected by ice. Rating curve well defined. Operation of water-stage recorder satisfactory except for periods indicated in footnote to daily-discharge table. Daily discharge ascertained by use of discharge integrator with corrections for effect of ice during winter. Records good for open-water period and fair for ice period.

Discharge measurements of Ware River at Gibbs Crossing, Mass., during the year ending September SO, 1926

Date

Feb. 4..........

Gage height

Feet o o a/i"2.66

Dis charge

Sec.-ft. 183298

Date Gage height

Feeto 1 O9

2.88

Dis charge

Sec.-ft. 33.8

508

Date

Tnltr tA.

Sept. 7- .....

height

Feet 1.682.11

Dis- charge

See.-ft. 56

146


Daily discharge, in second-feet, of Ware River at Gibbs Crossing, Mass., for the year ending September 30, 19S8

Day

1 . __. 2... .__.___.__._3.... ...........4...............5.... ...... _

6...............7.... ...........8 ............9...............10...............

Oct.

84825940184

19412210512091

Nov.

6684808072

7692102246320

Dec.

280245275415555

665745620510400

Jan.

540325250285200

186210230210125

Feb.

19821075140110

166148245370580

Mar.

390395375345300

230290770730615

Apr.

810750705745900

840810870

1,1901.270

May

435385455400355

310295230215300

June

230220162145110

37184ISO152148

July

105135833320

7075807040

Aug.

3ft879T9593

6232286772

Sept.

9272733224

20TO646364

100

Daily


, in second-feet, of Ware River at Gibbs Crossing, Mass., for the year ending September 80, 1926 Continued

Day

11 .. _ 12 _ ..... ___ .13 ,.14...............15 _ ...... __ ..16 __ ........ ...17. 18. ........19. .20 ... .........21...............22...............23. ...........24. ..........25 ..........26 27 28 29.30 _ _.31 ..........

Oct.

9812519420417215586561601721301381207748330345264240176112

Nov.

310280340390380

620640AKf\

340300255305285235122240260

290

Dec.

330305280

285200235220120120275380490385275260225OOC

fiAK

735

Jan.

13010588695652

187705680

4009Sfl

315270135184

260166

Feb.

840800645825

1,030' 925

825600380450535340300

2703154454,9 C

Mar.

530455380330340310285290OQft

375515700825860

1 0001,1901,010

815760745

Apr.

1,2701,2001,030900840785720665

585475435475510730980840720620530

May

310225215230170225320315290310305245215275255190 !

18011270102122

June

1289832

13814212282736435100112124124865884220195120

July

205391120100712724757710563633926667292768637

Aug.

6Y565630,26

88102104988841,27887861555024183062

Sept.

4322192453455128182661565659312420546858

NOTE. Stage-discharge relation affected by ice Dec. 28 to Jan. 4 and Jan. 11 to Feb. 26; daily discharge 1 based on gage height from integrated discharge corrected for effect of ice by means of three discharge measure ments, observer's notes, weather records, and records from adjacent drainage basins. Discharge Nov. 1-7, 10-14, 18-19, and Jan. 9-10, estimated from record and by comparison with records from adjacent drainage basins.

Monthly discharge of Ware River at Gibbs Crossing, Mass., for the year endingSeptember 80, 1926


Month

October _______________________November _ . ________________

January __________________

March...... __ , _________________

TVTavJune ____ __ : _ __ .July __ _ ...August .. _ ...T _______________


Maximum

345 640 745 705

1,030 1,190 1,270

455 230 135 104 92

1,270

Minimum

40 66

120 52 75

230 435 70 32 20 18 18

18

Mean

145 268 381. 251 446 560 794 260 124 66.6

v 61.5 46.3

282

Per square mile

0.721 1.33 1.90 1.125 2.122 2.78 3.95 1.28 .617 .331 .306 .230

1.40

Run-off in inches

0.83 1.48 2.19 1.44 2.31 3.20 4.41 .49 .69 .38 ..35 .26

19.03

SWIFT BIVEE AT WEST WARE, MASS.

LOCATION. 1,000 feet below old wooden dam opposite West Ware station of Bos ton & Albany Railroad, Hampshire County, 6 miles downstream from Enfield, and 3 miles below confluence of East and West Branches of Swift River.

DRAINAGE AREA. 186 square miles.RECORDS AVAILABLE. July 15, 1910, to September 30, 1926.GAGE. Water-stage recorder on left bank; inspected by H. C. Davis.DISCHARGE MEASUREMENTS. Made from cable or by wading.CHANNEL AND CONTROL. Gravel and alluvial deposits; some aquatic vegetation

in channel during summer. Control shifts slightly at various times; at high stages control is probably at dam at Bondsville, 4 miles below gage.

CONNECTICUT RIVEB BASIN 101

EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder 6.03 feet at 10 p. m. April 11 (discharge, 1,250 second-feet); minimum stage, 1.91 feet from 8 p. m. September 24 to 8 p. m. September 25 (discharge^ 52 second-feet). -

1910-1926: Maximum stage recorded, 9.08 feet April 7, 1923 (discharge,- 2,390 second-feet); minimum discharge, 22 second-feet September 22, 1914.

ICE. River usually freezes over, and stage-discharge relation is affected by ice during most winters.

REGULATION. Operation of mills at Enfield, 6 miles above station, has at times affected distribution of flow at low and medium stages; not seriously affected during present year.

ACCURACY. Stage-discharge relation not permanent. Rating curves fairly well defined. Water-stage recorder operated satisfactorily except for periods- indicated in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table, with corrections for ice- effect during winter. Records good for open-water period and fair for ice- affected period.

Discharge measurements of Swift River at West Ware, Mass., during the year ending.September SO, 1926

Date

Nov. 9 _.____..__Nov. 17 Dec. 4 ....

Gage height

Feet 2.723.75a 37

Dis charge

Sec.-ft. 216487383

Date

Jan. 16.... .Feb. 5. .........

Gage height

Feet 2.81"3.22

Dis charge

Sec.-ft. 140176

Date

Apr. 21 Tnlv *)A.

Gage height

Feet 3.882.15

Dis charge

Sec.-ft. 505-8*


Daily discharge, in second-feet, of Swift River at West Ware, Mass., for the year ending September 30, 1926

Day

1 _ .. _____2_ ___ . .....3. ____ . ......4......... ......5 ... .. .....6 ........7 8 _____ ......9 __ . ____ -10 11..... ___ ....12. .13.. _ . .........14 __ . __ . __ .15. ___ ........16 17.,.. __ ,. __ -18.. __ ........19'. I.' ..... 20., . 21.. _ ....... ...22. . 23.. ___ ........2A '425 .26. ...... ....27..... ..........28. ....-.....29., _i-w ...30. I ..31.. _ ..... .....

Oct.

919198109110109120114116146152154146140150161163173171161144140128120154272330330

255215

Nov.

1841671541481441441631 AQ

210231226208248330330367470470410367317272241221201190184232262223

Dec.

238231260367455

515545500440367305305260236226219236221206190197255330305305255745680560455355

Jan.

262257275305227241217186184179175161154

146144146146165650715730635560515470485305330

367212

Feb.

197201188190199241173208250199217229236184179179188156175236257260253243231305342355

Mar.

34234233028025023124342548548545541036730528026225324322»221317410545650797915915885

780730

Apr.

698665650650665680698780950

1, 1301,2501,0501,010886806758726666621561531516516sifi636758758640582524

May

484432406380355330310288275258254254244239251244268278258282285263242917

2041781661621 ^4.

148148

June

164170172170156150142146146146142128126115132142128122124118104102115115107118181185183158

July

136122113106898386888278868982888989888889888686908283777473788282

Aug.

8076941171029490847874767780827880106111102959084807371747677736967

Sept.

676T6T67"67"

?r89«7771'70'

6666-6663'67'

64.62'63;6262!64(62:62?6?52"

5T63-6263-62:

NOTE. Stage-discharge relation affected by ice Dec. 22 to Mar. 25; discharge based on gage height coi> rected for effect of ice by means of two discharge measurements, observer's notes, weather records, and rec ords from adjacent drainage basins. Recorder not in operation Oct. 12, Dec. 15-20, Mar. 28 to Apr. 4^, discharge determined by comparison with records from adjacent drainage basins.

102 SUEFACE WATEE SUPPLY, 1926, PAET I

^Monthly discharge of Swift River at West Ware, Mass., for the year endingSeptember SO, 1926


Month

October... ...... _ ... ______________

March ______________________April. ........................... _ ...........

July...........................................August. - . .......... ...................September... _ .... __ . ...............

The year... _______________


Maximum

330470 745 730 355 915

1,250 484 185 136 117 89

1,250

Minimum

91 144 190 144 156 221 516 148 102 73 67 5252

Mean

163 249 347 322 224 458 730 266 140 88.8 84.2 65.2

262

Persquare mile

0.876 1.341.87 1.73 1.20 2.46 3.93 1.44 .753 .478 ..453 .351

1.41

Run-off in inches

1.01 1.50 2.16 1.99 1.25 2.84 4.38 1.66 .84 .55 .52 .39

19.09

QUABOAG RIVER AT WEST BRIMFIEID, MASS.

LOCATION. At two-span highway bridge near railroad station of Boston & Albany Railroad, West Brimfield, Hampden County, one-third mile above mouth of Blodgett Mill Brook.

DRAINAGE AREA. 150 square miles.RECORDS AVAILABLE. August 23, 1909, to September 30, 1926.'GAGE. Water-stage recorder on left bank, upstream side of bridge; inspected

by Mrs. G. G. Alien.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed covered with boulders, gravel, and alluvial deposits;

slight shifts in control have occurred at various times.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage

recorder, 4.40 feet at 8 a. m. April 9 (discharge, 890 second-feet); minimum stage, 1.59 feet at 5 p. m. July 12 (discharge, 4 second-feet).

1909-1926: Maximum discharge recorded, 1,980 second-feet March 17, 1920; minimum discharge, 2.5 second-feet September 17 and 18, 1910 (water held back by dams).

ICE. River usually freezes over, and stage-discharge relation is affected during most winters.

REGULATION. Flow affected by operation of power plants at several places above gage. At low stages this causes a large variation in discharge on days when mills are in operation and a low discharge on Sundays and holidays.

ACCURACY. Stage-discharge relation permanent except when affected by ice. Rating curve well defined between 15 and 600 second-feet. Operation of water-stage recorder satisfactory except for periods mentioned in footnote to table of daily discharge. Daily discharge ascertained by discharge integrator. Records good for open-water period and fair for period of ice effect.

Discharge measurements of Qudbpag River at West Brimfield, Mass., during the year ending September S0t 1926

Date

Jan. 15 ..........Feb. 6...... ....-Apr. 22.........

Gage height

Feet »4.04»5.07

3.59

Dis charge

Sec.-ft. 171189490

Date

Apr. 22..... __

3RFeet 3.363.05

Dis charge

Sec.-ft. 413300

Date

July 24.. .......July 25...... ...

Gage height

Feet 2.001.95

Dis charge

See.-ft 5334..



Daily discharge, in second-feet, of Quaboag River at West Brimfield, Mass., for the year ending September SO, 1926

Day

I........ ... ....2 ...... ......3. 4...............5... _ 6... . .- 7 __ _ . .....8.... _ . 9...... __

10... __ .......11 __ ..........12........ .......13....... ........14 ___ . ___ ..15. _ ..... ......16 .. 17 ... __18 19. 20........ _ ....21... ............22...............23...... ...... ...24 ...............25 26. . 27... ............28....... _ .....29 _ ..... .30. _ ...........31........ ...

Oct.

64667459645049438496527054829394100698288879086581051159891898286

Nov.

86867878749269828474727614512099185150150160145145135135130135127135135100140

Dec.

135110145185180202210205190180215195160155150275250235250190185225160210240275315420540315180

Jan.

12011511013513012013515516516516016015515014012588120205135140245135195245270275250230250175

Feb.

155160170160165150135130140135135140135125130130130130150140140125125130135165140130

Mar.

135140155150150145160510500490480460420395335280260240255325405450495510555600590560510525540

Apr.

555525555605600590620660760700680650630605560540490470465415390580580385460445425420405390

May

3703503453052t>0285260230205210220200185170165170200198210235220182165155160170165165120115105

June

12013013512511010512012511511010084707890947580584478566968747277727858

July

68784820386851423944331821283340341044363829502829474130364538

Aug.

24505042314031244232364144522871687262534126664646494930306443

Sept.

32244121113762342827241ft443T3Tsa4ft31146016-ia3826,2716-56.32'36.34

NOTE. Stage-discharge relation affected by ice Dec. 24 to Mar. 14; discharge estimated. No gage- height record June 5-10 and July 8 and 9; discharge estimated by comparison with records from adjacent drainage basin.

Monthly discharge of Quaboag River at West Brimfield, Mass., for the year ending.September 30, 1926


Month

April . _ ..............May ______ . _______ . ................

July......... ..................................

September .... _____ _____ . _ .


Maximum

115 185 540 275 170 600 760 370 135 78 72 62

760

Minimum

43 69

110 88

125 135 385 105 44 10 24 1110

Mean

78.1 114 222 164 141 378 538 210 89.0 38.8 44.6 33.0

171

Per square mile

0.520 .760

1.48 1.09 .940

2.52 3.59 1.40 .593 .259 .297 .220

1.14

Run-off itt inches

0.6ft .85.

1.71 1.26, .98

2.90 4.00 1.61 .66- .30- .34 .25

15. 46.

WESTFIEID RIVER AT KNIGHTVIIIE, MASS.

LOCATION. At single-span steel highway bridge known locally as Pitcher Bridge in Knightville, town of Huntington, Hampshire County, 1 mile north of outlet of Norwich Lake and 3 miles above confluence with Middle Branch of Westfield River

DKAINAGE AKEA. 162 square miles.RECORDS AVAILABLE. August 26, 1909, to September 30, 1926.GAGE. Chain attached to downstream side of highway bridge; read by Russell

Burr.


DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Channel rough, covered with boulders and ledge rock;

control practically permanent. EXTREMES OP DISCHARGE. Maximum stage recorded during year, 6.90 feet at

7.30 a. m. April 25 (discharge, 4,740 second-feet); minimum stage, 0.88foot September 4 (discharge, 18 second-feet).

1909-1926: Maximum stage recorded, 10.8 feet April 7, 1924 (discharge,by extension of rating curve, 10,500 second-feet); minimum stage, 0.60 footAugust 10, 1913 (discharge, 4 second-feet).

ICE. Ice usually forms in river early in winter and affects stage-dischargerelation.

REGULATION. Flow not seriously affected by regulation. ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve fairly well defined below 3,500 second-feet. Gage read to-hundredths twice daily. Daily discharge ascertained by applying meandaily gage height to rating table. Records good for open-water period;fair for period affected by ice.

Discharge measurements of Westfield River at Knightville, Mass., during the year ending September 80, 1926

Date

Jan. 18 ____________Feb. 6. __

Gage height

Feet 1.94"2.50

Dis charge

Sec.-ft. 117158

Date

July 20

Gage height

Feet 4.641.32

Dis charge

Sec.-ft. 1,950

60


Daily discharge, in second-feet, of Westfield River at Knightville, Mass., for the year ending September 80,

Day

1.. __ ........2.. _ .3 _________

5. _________6 -1. ....... .......8 __ -9 __ -

10. __ .... ___ -11 12. ___ ___13 ___ -14 15 ....16 . ___ .17 - __ -1«. ____ ......19 20 21....... ... 22 ____ 2& __ _ ,M... ...... ... ...:25 _ . __

26 27 28 _ ............29 __ ......30 _ ......31 _____ ....

Oct.

635157108857774736812612897848197119132

,1191158481777171

191310240225173160148

Nov.

1411321231191139787275567292240225

2,700910512

3,4401,1201,2001,050370

275240225

205

625292

Dec.

210

2751,7301,8302,1401,0508125954853903102922401QQ

207225240240257

715485275IQfi

144115

225202104

Jan.

188

199160

151175MUL121111

1081111069780

84

85132

O 1AA

910OQA

240178

100Q9onOA

153

Feb.

126108113106100123123123117

1111029389QK

Q7

958107

111

1021041041171512402101Q1

Mar.

180

1531301231111212103900*70

310292275OK7

t)A(\

2251QQ

275JOK

655945QlflQ-IO

OCA

685CQC

419

390460

Apr.

512412370390370°.7fl

412625

1,2001,360

1,1201,2001,5401,6301 4501,2801,050

Sit;780945

9 OKA

2,7009 fl^o3 GQA

i o^n1 360OCA

747

May

685

685

595485390

275

275275257257240240

25791 fl

540330240194163139

1 OQ

117

OQ

01

June

102173183153130

113IfU

134

99999292

240144121AQ

93$29

7095857O

79240

857Q

July

676458565354574135363501235054KA

4741475447OQ

263128OK

3026q-i

50QK

67

Aug.

50611801531097956433937385316382viOQ

2051288567KA

AQ

50

3656CO

47OK

2624

Sept.

22211918215317810977604738362824

2428

22202120

. 24OQ

KO

QQ

on

24

NOTE. Stage-discharge relation affected by ice Dec. 25 to Jan. 18 and Jan. 22 to Mar. 24; discharge ^ge.height corrected for effect of ice.

CONNECTICUT RIVEE BASIN 105

Monthly discharge of Westfield River at Knightville, Mass., for the year endingSeptember 80, 1926

[Drainage area; 162 square miles]

Month

March ______ . _______________

July.... .......... ........ ...... ...............August


Maximum

310 3,440 2,140 2,140

240 980

3,830 685 240 350 205 178

3,830

Minimum

51 87

115 84 81

111 370 81 70 26 24 18

18

Mean

116 550 486 230

-120 382

1,200 313 117 59.5 70.6 38.9

306

Per square mile

0. 716 3.40 3,00 1.42

'.741 2.36 7.41 1.93 .722 .367 .436 .240

1.89

Run-off in inches

0.83 3.79 3.46 1.64 .77

2.72 S.-27 2.22 .81 .42 .50 .27

25.70

WESTFIELD RIVER NEAR WESTFIELD, MASS.

LOCATION. At Trap Rock Crossing, 1 mile below mouth of Big Brook, 2 miles below mouth of Westfield Little River, and 3 miles east of Westfield, Hampden County.

DRAINAGE AREA. 496 square miles.RECORDS AVAILABLE. June 27, 1914, to September 30, 1926.GAGE, Water-stage recorder on right bank; inspected by Andrew Kelly.DISCHARGE MEASUREMENTS. Made from cable or by wading.CHANNEL AND CONTROL. Bed covered with gravel and alluvial deposits; some

aquatic vegetation in channel during summer. Riffle of boulders 200 feet below gage forms control at low and medium stages. At high stages con trol is probably formed by crest of storage dam at Mittineague, 3 miles below station.

EXTREMES OP DISCHARGE. Maximum stage during year from water-stage recorder, 11.75 feet at 9 a. m. April25 (discharge, about 8,880 second-feet); minimum stage, 3.13 feet at 8.45 a. m. July 20 (discharge, 77 second-feet).

1914-1926: Maximum stage recorded, 22.13 feet April 7, 1924 (discharge by logarithmic extension of rating curve, 32,500 second-feet); minimum stage, 2.78 feet October 2, 1921 (discharge by extension of rating curve, 9 second-feet).

ICE. Stage-discharge relation seldom, if ever, affected by ice. River freezes over above and below gage, but control remains open throughout winter.

DIVERSIONS. Water is diverted from Westfield Little River and carried to Springfield for municipal use.

REGULATION. There are several power plants above station but diurnal fluctua tion is small; the nearest dam is at Westfield.

ACCURACY. Stage-discharge relation for low stages subject to slight changes. Rating curves fairly well defined between 100 and 7,500 second-feet. Opera tion of water-stage recorder satisfactory. Daily discharge ascertained by applying mean daily gage height by inspection of recorder sheets to rating table. Records good.


Discharge measurements of Westfield River near Westfield, Mass., during the year ending September SO, 1926

Date

Nov. 8... _ ....Jan. 16 __ ....Feb. 7

Gage height

Feet 3.60a 784.14

Dis charge

See.-ft. 254322481

Date

Apr. 23 Do...... ....

Gage height

Feet 9.309.105.72

Dis charge

Sec.-ft. 5,8505,5101,550

Date

July 17. .... .

Gage height

Feet 3.30

Dis charge

Sec.-ft. 122

Daily discharge, in second-feet, of Westfield River near Westfield, Mass., for the year ending September SO, 1926

Day

1... ___ ... ...2...............3. ... ..... 4. .. .. _ .

6. .... ... ....T. ..............8 9. ... ........10 11.... _ ........12. ___ ........13.. ..........14.. _ ..........15 16. 17........... .18 19... ............20...............21...... _ ..._..22. .. .23 24...............25 26 27. . 28 29. ..30 31 .

Oct.

223175172191291283169183215239279299267227231299299283376263255215247172535

1,790864600500430344

Nov.

331344349304304299394326

1,050750540445

2,9002,4001,3302,9002,2101,3301,050

894810702726630580440580

1,120882642

Dec.

590605828

3,1004,0204,1402,5501,7101,4401,050

918942894804642610610580550

7801,3001,190

786702575610930580460394

Jan.

385440435475450520510580398349394389394349340335304450

4 7801,9801,210

9526786266265<U

564CftQ

509444489

Feb.

569494479419424454439459414414424410390386434386405386405534605636529489474705924059

Mar.

759759786678579534559

1,1201,2701,150

952813759668678626584584605786

1,2101,4801,8001,7601,9302,9401,8801,4801,2101,2401.480

Apr.

1,9301,4801,3001,2401,2401,2401,4401,7603,9004,5204,2603,6602,9403,4203,9002,9402,8302,1102,1101,8801,8404,0205,5804,0206,2803,6602,2501,8401,8401,590

May

1,4401,3001,4001,3401,1201,010

924840786786732813759732705642896786678980952732584647514474459424328338366

June

539559554595429328484424424504333275280275294489529309243266252239275280234190459r>fKi

290225

July

19917513723012713414013414311319015316015718319916027514797

150164190153153147140140309559400

Aug.

252257434759464299216271338252208239509484314390732678504338252290252248243257318212208186186

Sept.

16016016016020823050459036623029919424S2211901901901942oa19919419920824823929»239252314262

Monthly discharge of Westfield River near Westfield,September 30, 1926


Mass,, for the year ending

Month

December ___________

February .....................

April- ....................May_ ____ . ...............

July..........................

Observed discharge (second-feet)

Maxi mum

1,790 2,900 4,140 4,780

952 2,940 6,280 1,440

595 559 759 590

6,280

Mini mum

169 299 394 304 386 534

1,240 328 190 97

186 160

97

Mean

352 919

1,140 690 501

1,090 2,770

790 370 186 342 245

782

Diversion from

Westfield Little River

(millions of gallons)

486. 32 436.65 426. 79 421. 16 411. 33 420.08 390.19 443. 10 445.27 483.56 478.32 483.46

5, 326. 23

Total discharge (second-feet)

Mean

376 941

1,160 711 524

1,110 2,790

812 393 210 366 270

805

Persquare

mile

0.758 1.90 2.34 1.43 1.06 2.24 5.62 1.64 .792 .423 .738 .544

1.62

Run-off in

inches

0.87a 12 2.?a1.65 1.10 2.58 6.27 1.89 .88 .49 .85 .61

22.01

CONNECTICUT KIVER BASIN 107MIDDLE BRANCH OF WESTFIELD RIVER AT GOSS HEIGHTS, MASS.

LOCATION. At highway bridge in Goss Heights, half a mile above confluence with Westfield River, and \% miles above Huntington, Hampshire County.

DRAINAGE AREA. 53 square miles.RECORDS AVAILABLE. July 14, 1910, to September 30, 1926.GAGE. Water-stage recorder on right bank upstream side of bridge abutment;

inspected by Chester W. Cady.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Channel covered with coarse gravel and boulders.

Control somewhat shifting.EXTREMES OP DISCHARGE. Maximum stage during year from water-stage

recorder, 4.43 feet at 4 a. m. April 25 (discharge, 1,660 second-feet); minimum stage, 0.68 foot August 11 and September 25 (discharge, 3.4 second-feet).

1910-1926: Maximum stage recorded, 7.33 feet July 8,1915 (discharge by extension of rating curve, 4,500 second-feet); minimum discharge, prac tically zero October 26 and 27, 1914.

ICE. River usually frozen over during greater part of winter; ice jams occa sionally form below gage, causing several feet of backwater.

REGULATION. Flow somewhat affected at times by operation of small power plant 2 miles above station. \

ACCURACY. Stage-discharge relation not permanent. Rating curves well defined below 1,500 second-feet. Operation of water-stage recorder satis factory except for period indicated in footnote to daily-discharge table Daily discharge ascertained by applying mean daily gage height, as deter mined by inspection of gage-height graph, to rating table with corrections for effect of ice during winter. Records good for open-water periods and fair during winter.

Discharge measurements of Middle Branch of Westfield River at Goss Heights, Mass.. during the year ending September SO, 1926

Date

Jan. 17..........Feb. 6.... ...

Gage height

Feet "1.53«1.43

Dis charge

Sec.-ft. 27.234.6

Date

Apr. 22.........Apr. 23........ .

Gage height

Feet 4.143.19

Dis charge

Sec.-ft. 1,440

852

Date

Apr. 23.. .......July 21. ........

Gage height

Feet 3.14.78

Dis charge

Sec.-ft. 811

9.7


Daily discharge, in second-feet, of Middle Branch of Westfield River at Goss Heights, Mass., for the year ending September 80, 1926

Day

1...............2...............3.. ....... ...4....... .....

6...... .........7_. .............8...... ....... ..9...............10

11. 12 13 14 ...........15

Oct.

9.17.79.91515

1311

9.919

2320181719

Nov.

2628232221

283464

15474

4737540284163

Dec.

130120F35

610.384189146107

10294828598

Jan.

2532312426

3434202425

2325222623

Feb.

3225253447

4145414047

4750505054

Mar.

961001009487

89105157186166

138125125117117

Apr.

14812610810297

106123206500522

522410393500508

May

171160165152116

9983726657

5261524644

June

2838352821

2121252628

2118151628

July

1010111010

1212131312

1213131313

Aug.

8.911354119

8.98.27.56.86.1

5.48.2

362112

Sept.

7.56.86.86.16.8

2248311510

8.27.56.86.86 1

63435 3(


Daily discharge, in second-feet, of Middle Branch ofWestfield River at Goss Heights Mass., for the year ending September 30, 1926 Continued

Day

16 ............17 18.... ...........19 20 .

21 22 23 24... .......25

26. .. ..27 ........28-. .....29 30 31

Oct.

2324292118

18161314122

1777647403228

Nov.

60529818914394

7870645458

495015789112

Dec.

135125877672'

96107606872

7866fi9491918

Jan.

232335700189

1OA

8582

138

13510572414332

Feb.

5852587896

9889

7682

115125105

Mar.

112112112110135

246344483610690

790349149128126146

Apr,

389361270-267247

369765880575970

432267225216180

May

44554636116

7955444034

303027222122

June

4426181513

1212151211

2238201210

July

1313131616

7.55.46.16.16.1

6.15.44.7113012

Aug.

1886321912

118.98.9&98.2

9.68.98.28.28.26.8

Sept.

5.44.74.74.04.0

4.04.04.04.04.0

5.46.16.86.86.8

NOTE. Stage-discharge relation affected by ice Dec. 15 to Jan. 18 and Jan. 25 to Mar. 23; discharge based on gage height corrected for effect of ice by means of two discharge measurements, temperature and precipitation records, and by comparison with records from adjacent drainage areas.

Monthly discharge of Middle Branch of Westfield River at Goss Heights, Mass., for the year ending September SO,

[Drainage area, 53 sqnare miles]

Month

November ______ . ______ . _____

January. _______________

March.. ...... _______________April .May.-.. __________ ..: .........

July... .. .».. ............

September ____________________

The year.


Maximum

177 605 610 700 125 790 970 171 44 30 41 48

970

Minimum

7.7 21 18 20 25 87 97 21 10 4.7 5.4 4.0

4.0

Mean

29.5 122 144 75.2 '

62.1 208 360 67.6 21.6 11.2 16.1 9.00

93.7

Per square mile

0.557 2.302.72ts3.93 6.79 1.28 .408 .212 .304 .170

1.77

Run-off in inches

0.64 2.57 3.14 1.64 1.22 4.53 7.58 1.48 .46 .24 .35 .19

24.04

FARMINGTON RIVEE WEAR HEW BOSTON, MASS.

LOCATION. At highway bridge a quarter of a mile below Clam River and 1 milesouth of New Boston, Berkshire County.

DRAINAGE AREA. 92.7 square miles.RECORDS AVAILABLE. May 27, 1913, to September 30, 1926. GAGE. Water-stage recorder on left bank, downstream side of bridge; inspected

by George Snow.DISCHARGE MEASUREMENTS. Made from cable or by wading. CHANNEL AND CONTROL. Channel rocky and covered with boulders. Control

practically permanent.


EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 6.34 feet at 3 a. m. April 25 (discharge by extension of rating curve, 1,740 second-feet); minimum stage, 2.66 feet from 11 a. m. to 10 p. m. July 13 (discharge, 26 second-feet).

1913-1926: Maximum stage recorded, 7.84 feet April 7, 1924 (discharge by extension of rating curve, 3,450 second-feet); minimum stage, 2.22 feet August 27, 1913 (discharge, 4.4 second-feet; water held back by dam).

ICE. River usually frozen over during greater part of winter with occasional1 ice jams below gage.REGULATION. Flow affected by storage in Otis Reservoir 5 miles above New

Boston, which has a capacity of 880 million cubic feet, and by operation of a woodworking shop just above station.

ACCURACY. Stage-discharge relation practically permanent except when affected by ice. Rating curve well defined below 1,700 second-feet. Operation of water-stage recorder satisfactory except for periods noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height, determined by inspection of gage-height graph, to rating table, with corrections for ice during winter. Records good.

The following discharge measurements were made:January 17, 1926: Gage height, 3.30 feet; discharge 43.5 second-feet (stage-

discharge relation affected by ice).July 23, 1926: Gage height, 3.35 feet; discharge, 100 second-feet.

Daily discharge, in second-feet, of Farmington River near New Boston, Mass., for the year ending September SO, 1926

Day

I... .. ... ....2_. ..............3 - 4 ___ -5 .

6. . 7 ... . -.-.--... ..8. ...........9... ...... ...10 -

11-... -l'_._ :-_.-.12. _ .rur.-.is..... : _: .14...............15 .. .......

16 - ,17 ............18... .........19 . ........ ..20

21 - 22...-----.......23... .........24 .25 ... ....... ..

26-. , . .27 .... _ ..28_._ ........29 __ .30 ...........31

Oct.

1229873

, 41QS

8175707185

122173 162105118

11298686159

585555162253

224131100877767

Nov.

6259585553

707388162114

9081 375253238

375285210162131

1201071008886

7790197122120

Dec.

10598122395435

550356269197151

151141122106151

185151131110100

131269224238210

1972382381629056

Jan.

5050505051

6676718181

98156 13713567

444372

:>337

238162131210337

455415415477356197

Feb.

167127110116125

9475615652

5250 474853

545251129208

208169137110108

302337319

Mar.

-385269269253238

238250680710550

455415 356319319

319302302285319

455455356337395

315356337269269269

Apr.

269269238238238

269269395740805

805650 600650650

600600625625477

455770

1,140910

1,400

875650575-550415

May

375375395375319

269253238210185

173185 173185173

162173162141210

185151141118

1029390878687

June

102151141116100

94911009990

7876 717672

7873666353

4645464848

6486665852

July

4342383636

3434312930

3129273029

Qfl1629410496

939098100Qfi

91888817316296

Aug.

706055131120

64681318165

5676 15110487

9122413110281

7260566055

102102989491-88

Sept.

8786364855

10077615044

5354 514685

173162384288

871221228232

29114141141141

NOTE. Stage-discharge relation affected by ice Dec. 24 to Jan. 19 and Jan. 27 to Mar. 14; discharge based on gage height corrected for ice by means of one discharge measurement, observer's notes, and weather records. Operation of water-stage recorder unsatisfactory Nov. 15, 16, Dec. 27 and 28; discharge esti mated by comparison with discharge records from near-by stations.


Monthly discharge of Farmington River near New Boston, Mass., for the year endingSeptember SO, 1926


Month

December -------------- _-._. - .. -

February.-.--- ----- -..-- . .March

June. .. .July...... ...... ........... ......... ___________


Maximum

253 375 550 550 337 710

1,400 395 151 173 224 173

1,400

Minimum

41 53 56 43 47

238 238 86 45 27 55 29

_:7

Mean

102 137 196 182 122 356 592 193?ao71.6 91.2 81.6

184

Per square mile

1.10 1.48 2.11 1.96 1.32 3.84 6.39 2.08 .841 .772 .984 .880

1.98

Run-off in inches

1.27 1.65 2.43 2.26 1.38 4.43 7.13 2.40 .94 .89

1.13 .98

26.89

HOUSATONIC RIVER BASIN

HOtJSATONIC RIVER NEAR GREAT BARRINGTOW, MASS.

LOCATION. At highway bridge one-fourth mile northeast of Van Deusenville station of New York, New Haven & Hartford Railroad and 2 miles north of Great Barrington, Berkshire County.

DRAINAGE AREA. 280 square miles.RECORDS AVAILABLE. May 17, 1913, to September 30, 1926.GAGE. Inclined staff attached to concrete anchorages on downstream side of

left abutment of highway bridge; vertical high-water section attached to bridge abutment; read by Mrs. Herbert Armstrong.

DISCHARGE MEASUREMENTS. Made from upstream side of highway bridge or by wading.

CHANNEL AND CONTROL. Bed composed of sand and gravel; control for high stages not well denned; at low stages control is riffle a few hundred feet below gage.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.00 feet at 6 p. m. April 25 (discharge, by extension of rating curve, 3,370 second- feet); minimum stage, 0.78 foot at 5 p. m. October 25 (discharge, 19 second- feet) .

1913-1926: Maximum stage recorded, 8.0 feet March 31, 1916 (discharge, by extension of rating curve, 5,300 second-feet). Zero flow recorded at va rious times caused by storage of water at dams above.

ICE. Stage-discharge relation seldom, if ever, affected by ice, although river freezes over a few hundred feet downstream from gage.

REGULATION. Storage above dam of paper mill 1 mile above station causes low flow on Sundays and holidays.

ACCURACY. Stage-discharge relation permanent; unaffected by ice. Rating curve well defined below 2,000 second-feet. Gage read to quarter-tenths twice a day. Daily, discharge ascertained by applying mean daily gage height to rating table. Records good.

The following discharge measurement was made:July 22, 1926: Gage height, 1.49 feet; discharge, 152 second-feet.

HOtTSATONie RIVER BASIN 111

Daily discharge, in second-feet, of Housatonic River near Great Barrington, Mass., for the year ending September SO, 1926

Day

1 ____ 2.......... _ ..3...............4...............5...............

«__-_____-______7______ ______8_______________9___. ___________10._____. ________

11 _____12 .... .__ 13___ _______14_. _.____..____.15_______________

16___. ..__.______17.. .._______._._18 19____..____ _ __20 _ _

21. ___.__.______.22 _.._.-_____23 24... _________ _25 __________

26 _-_.._____27 __._..______28 __________ _.29... ._____ 30.__. ___________31 __________

Oct.

38222125147280

320125162190190

175145135150390

240

175162137

1752051907699

47520190260240145

Nov.

151300300260205

24028090

,415550

492. 390

300675675

1,1301,4901,6501,340990

745342465580520

342550815580342

Dec.

465465550KOfl

580

990920885780710

640465465465145

365300300320

390320492610342

240520342280260260

Jan.

175390300320Ojlft

365300320105175

365415280190999

88205190745

1,060

920780365390465

32036532030064260

Feb.

342390280300300

70300280222222

240240175280190

175205125365240

43300365240365

260415390

Mar.

3654404153on320

320365520610640

6105804154654_,n

440AA(\342415415

640745

1,2001,3401,200

1,4101,4901,060990990

1,060

Apr.

1,060990920745492

815850990

1,5701,730

2,6502,8302,3802,3802,470

2,3802,2902,1301,5701,410

1,4101,4102,5603,1003,370

3,1902,8302,3801,5701,490

May

1,270990850990

1,130

885780440222675

fun640580580580

550520465440415

320320280300320

240300280190175205

June

190205205175175

68175222222260

24019062190240

240205240175105

190222162205130

150150175175190

July

2052051057292

175205240280175

150175175162130

15013562162147

13513715014053

205222162205240260

Aug.

222240342415365

280162240342280

222240342280222

365440365320260

190175320342320

240175147122205135

Sept.

125140147100300

465415390415342

260205205205260

240162110135150

115110 92140145

115162175150162

Monthly discharge of Housatonic River near Great Barrington, Mass., for the year ending September SO, 1926


Month

December. ____________________________________

April...... _____ . _ _.____May... _ __ _ _

July _ ______

September. ___________________


Maximum

520 1,650

990 1,060

415 1,490 3,370 1,270

260 280 440 465

3,370

Minimum

22 90

240 64 43

320 492 175 62 53

122 92

22

Mean

187 573 474 355 261 680

1,870 535 184 165 268 205

479

Pea- square mile

0.668 2.05 1.69 1.27 .932

2.43 6.68 1.91 .657 .589 .957 .732

1.71

Run-off ininches

0.77 2.28 1.95 1.46 .97

2.80 7.45 2.30 .73 .68

1.10 .82

23,31

HOUSATONIC RIVER AT FAILS VILLAGE, CONN.

LOCATION. Half a mile below power plant of Connecticut Power Co. at FallsVillage, Litchfield County.

DRAINAGE ABE A. 644 square miles. RECOKDS AVAILABLE. July 11, 1912, to September 30, 1926.

112 SUJRFACE WATER SUPPLY, 1926, PART I

GAGE. Water-stage recorder on left bank; inspected by an employee of Con necticut Power Co.

DISCHAEGE MEASUREMENTS. Made from cable 150 feet above gage or by wading.

CHANNEL AND CONTROL. Channel deep and fairly uniform in cross section; one channel at all stages. Control not clearly denned except at low stages.

EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 8.32 feet at 7 p. m. April 11 (discharge, 4,370 second-feet); mini mum discharge, 7 second-feet September 18.

1912-1926: Maximum stage recorded, 13.3 feet March 29, 1914 (discharge about 8,830 second-feet); no flow at various times when water was held back by dam.

ICE. Stage-discharge relation affected by ice during some winters.REGULATION. Low-water flow is completely regulated by power plants at

Falls Village.ACCURACY. Stage-discharge relation not permanent. Rating curves well

defined above 90 second-feet. Operation of water-stage recorder satis factory. Daily discharge ascertained by discharge integrator except for days for which mean gage height could be accurately obtained by inspection, and daily discharge ascertained therefrom by application to rating table. Records good.

The following discharge measurements were made July 22, 1926: Gage height, 2.09 feet; discharge, 433 second-feet. Gage height, 1.06 feet; discharge, 94 second-feet.

Daily discharge, in second-feet, of Housatonic River at Falls Village, Conn., for the year ending September 30, 1926

Day

1 . ...........2 - 3 4.. ........... -.5 _- -...

6. - 7...............8...............9...............10..............

11 12... .........13.... .... .......14... ...... ......15

16- 17... .........18 19 20

21.! 22..- 23 .24 25 ..... ......

26 27 28 29 30 31

Oct.

230220

150315

460255240425400

215430300280275

345455OKA

385330

305280265460295

750850

750675700

Nov.

380390510420

335505410675

1,100

950800

1,1001,3901,120

1 4fifl

2,1402,140

1,8001,050

1,0001 ft^n

77<=L

775i o^n

QOK

Dec.

775805935

1,2001,340

1,3401,7001,6401,4901,220

1,1001,040695790470

850

7ftft660480

64092098577077fL

Oftft

fin/i

420440485

Jan.

575600500475530

660600400483220

340325485485380

465205

3,2902,770

2,2401,730

905QAA

7257ftftCOC

700a en41 1\

Feb.

765715750975675

850700625680625

555460440340420

400

530875

825OAfi

825900

1,000

1,250

1,520

Mar.

1,4801,5201,6501,6001,290

1,2101,0602,3402, 5102,430

2,1401,7801,6201,2901,190

1,0801,1201,020

1,180

1,4901,970

2,7803,180

3,3703,0802,5602,1402,0201,980

Apr.

2,1202,0201,8901,8001,830

1,8301,8802,0803,0703,800

4,1304,1604,0203,790

3,4803,3703,070

2,310

2,1102,030

2,9603,720

4,1303 Q1 ft

3 4on2 8402,310

May

2,0801,8501,8101,8201,810

1,7501,5501,3101,000925

960985950885

715765CQC

730835

93500 C

690

500600590

' Kflrt

June

370560640635570

380395470530500

470510

355370

445460425

180

285OQK

285360345

350one

470530565

July

30527031017074

275250205215188

61240

205235

22521048

315

285220265285104

270o^n

420585firm

Aug.

84280Oin

440605

605605235425470

395355680880475

690

7Qfl655520

450ion340495

295OQC

68365315

Sept.

295290205240184

198555860865650

740240390370320

3fiA3651315128305

255235230245405

174OQA

380O1A

375

NOTE. Stage-discharge relation affected by ice Dec. 25 to Jan. 3, Jan. 7-17, 25-30, and Feb. 3 to Mar. 2; daily discharge based on gage height corrected for effect of ice on basis of observer's notes and records at power plant above gage.

113

Monthly discharge of Housatonic River at Falls Village,. Conn,, for the yearSeptember 80> 1986

Month

October... .NovemberDecember ...JanuaryFebruaryMarch _ ....April.MayJuneJuly ....August-. ..--September

The year


! Maximum

850 2,140 1,700 3,290 1,520 3,370 4,160 2,080

640 600 880 865

4,160

Minimum

150 335 360 205 340 935

1,800 340 180 48 68

128

48

Mean

398 1,030

872 820 743

1,850 2,900

995 426 252 442 359

922

Per square mile .

0.618 1.60 1.35 1.27 1.16 2.87 4.50 1.54 .661 .391 .686 .557

1.43

Run-off in inches

0.71 1.78 1.56 1.46 1.21 3.31 5.02 1.78

74.45 .79 .62

19.43

HUDSON RIVER BASIN

HUDSON BITER HEAR NEWCOMB, N. Y.

LOCATION. At steel highway bridge half a mile below outlet of Harris Lake, 2miles east of Newcomb, Essex County, 4 miles above mouth of Wolf Creek,and 5}£ miles above mouth of Goodenow River.

DEAINAGE ABEA. 192 square miles- (measured on topographic maps). RECORDS AVAILABLE. September 13, 1925, to September 30, 1926. GAGE. Staff gage at downstream side of bridge on right bank; read by Peter

Tefoe.DISCHABGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTBOL. Bed composed of boulders. One channel at all stages;

straight for 350 feet above and below gage. Banks subject to overflow atextremely high stages. Control composed of boulders; probably permanent,

EXTREMES OF DISCHARGE. Maximum stage recorded during period of record, 7.1feet April 26, 1926 (discharge, 4,660 second-feet); minimum stage, 1.53 feetat 7 a. m. July 28, 1926 (discharge, 55 second-feet.)

ICE. Stage-discharge relation probably not'affected by ice. REGULATION. Slight seasonal regulation by small storage reservoirs on head

waters of Opalescent and Hudson Rivers. ACCURACY. Stage-discharge relation permanent; not affected by ice. Rating

curve well defined between 90 and 5,000 second-feet; extended beyond these limits. Gage read to hundredths twice daily. Daily discharge ascertained

by applying mean daily gage height to rating table. Records good. :

Discharge measurements of Hudson River near Newcomb, N. F., during the years ending September SO, 1925 and 1926

Date

1925 Sept. 14.. ......Nov. 16... ......

1926Jan. 17 ___ ...

Gage height

Feet 2.854.17

1.93

Dis charge

Secr-ft. 456

1,300

130

Date

1926 Mar. 15.. .......Apr. 25. __ ....Apr. 26.. __ ..Apr. 26.. __ ..May 11... __ ..

Gage height

Feet 1.806.577.097.054.18

Dis charge

Sec.-ft. 98.7

3,9004,6804,5501,330

Date

1926

July 21 .... -Aug. 11... ......Aug. 27.. ....

Gage height

Feet 3.082.881.862.282.92

Dis charge

Sec.-ft. 590476117239476


Daily discharge, in second-feet, of Hudson River near Newcomb, N. Y., for the period September IS, 1925, to September SO, 1926

Day

1 ....2. 3.. __4......5-

6......7......8......9......

10_

11 ...12......13 14......15......

16 17......18......19......20. ..

21. .22......23_.....24.. 25......

26......27. 28.- 29......30...-.31. .

Sept.

178568710

6801,0501,050

742595

840910622595489

442357318489420

Oct.

357311318489595

5684894894424S9

466420442466442

540840980

1,050910

775650540489466

742840710650540442

Nov.

357

318303

296288338489710

MIS489489

1,360

1,3601,2801,200

980775

650540514

420

338378338288:

Dec.

263238238281398

8401 AM\

1,4401,120

749

VJpSL«;14.466398318

318318

318300

281263ORO

228

210194178178172155

Jan.

128112

112112

123100

136

136

i^fi

136

136131

178917

288318qnft300288

252

204178178164

Feb.

164IM164164164

1581581J.Q

149144

IQQ

136 iqi

100

114114114114

114

114

114

114114114

Mar.

114114114114114

114114114114

107107107107100

100100100100100

1121141281AA

149

144141fOQ

133131136

Apr.

136131131123123

128128144178217

540CJIA

540568

568650595540489

489595

O AQfl

3,670

4 6603,5402 qon

1,9801,440

May

9801,0501,8802,0802,710

2,1801,9801,7901,8801,610

1,2801,200

1,050980

980910980980

1,050

980910840775650

568514442420398378

June

514622775680568

489514466489595

650775808568595

1,3601,9801,790

910680

514420357311285

285285OQft

303303

July

267204181166144

144191204191274

489514

318259

224191161144126

114105928575

685957647373

Aug.

707896

121112

107123210292274

238204172146133

12313111810592

858189

144540

650540398338252194

Sept.

15513310592

100

105123146149146

136194184155133

131139184210184

155139133184442

514442357288252

Monthly discharge of Hudson River near Newcomb, N. Y., for the period September IS, 1925, to September SO, 1926

'[Drainage area, 192 square miles]

Month

1925 September 13-30 __ _____ ....... ___ _.

ua&ffiNov«nber ___________________

January... _______ _______ ........

March... . . . April ___________________ , ....

July r . . ._

September __ ̂ _____________ ...

Theyear. ________ _____


Maximum

1,050

1,050 1,360 1,440

318 164 149

4,680 2,710 1,980

514 650 514

4,660

Minimum

178

311288 155 112 112 100 123 378 285

57 70 92

57

Mean

14

579 592 425 173 133 117 984

1,150 640 183 202 194

448

Per square mile

3.20

3.02 3.08 2.21 .901 .693 .609

5.12 5.99 3.33 .953

1.05 1.01

2.83

Run -off in inches

2.14

3.48 3.44 2.55 1.04 .72 .70

5.71 6.91 3.72 1.10 1.21 1.13

31.71

HUDSON RIVER BASIN 115

HUDSON BIVER AT GOOIEY, HEAR INDIAN LAKE, N. T.

LOCATION. Half a mile above Gooley, Essex County, 1% miles below mouth of Cedar River, 1 mile above mouth of Indian River, and 5 miles northeast of Indian Lake village, Hamilton County.

DRAINAGE AREA. 418 square miles (measured on topographic maps).RECORDS AVAILABLE. -August 30, 1916, to September 30, 1926.GAGE. Gurley printing water-stage recorder on right bank; inspected by engi

neers from Albany office of Geological Survey.DISCHARGE MEASUREMENTS. Made from cable 100 yards below gage or by

wading. . ,CHANNEL AND CONTROL. Solid ledge overlain with coarse gravel; practically

permanent.EXTREMES OP DISCHARGE. Maximum stage during year from water-stage re

corder, 8.3 feet at 9 a. m. April 25 (discharge, 9,600 second-feet); minimum stage, 1.70 feet from 7.30 a. m. July 29 to 7.30 a. m. July 30 (discharge, 147 second-feet).

1916-1926: Maximum stage recorded, 10.0 feet at 8.15 a. m. April 12, 1922 (discharge, 13,900 second-feet); minimum stage, 1.38 feet from 8 p. m. August 22 to 10 p. m. August 23, 1923 (discharge, 44 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Large diurnal fluctuation due to logging operations during spring.

Seasonal distribution of flow slightly affected by storage.ACCURACY. Stage-discharge relation affected by backwater from ice or from

logs during most of year. Standard rating curve well defined between 200 and 7,500 second-feet. Operation of water-stage recorder satisfactory except during winter. Daily discharge for periods of no backwater effect ascer tained by applying to rating table mean daily gage height obtained from printed record by averaging hourly gage heights or, for days of considerable fluctuation in stage, by averaging discharges for hourly intervals of the day.

' Daily discharge for periods of backwater effect from ice or logs ascertained as indicated in footnote to table of daily discharge. Records good except those for periods of ice or log effect and those estimated, which are fair.

Discharge measurements of Hudson River at Gooley, near Indian Lake, N. Y., during the year ending September SO,

Date

Nov. IS.........Jan. 15... ......

s»Feet

«5.25»3.22

Dis charge

See.-ft. 3,300

339

Date Gageheight

Feet »3.28 3.11

Dis charge

See.-ft. 236061

Date

July 20- ... .

height

Feet 2.40 3.12

Dis charge

Sec.-ft. 485

1,010

1 Stage-discharge relation affected by logs on control. b Stage-discharge relation affected by ice.


Daily discharge, in second-feet, of Hudson River at Gooley, near Indian Lake, N. Y., for the year ending September SO, 1926

Day

1 ...2 ...............3. _______

*4^_ _ ... _ ...5 ___ .........

> 6 ...... ... ...7 __ ... 8- _____ .....9 - ... ... ....10

11 __ . __ .....12. -- 13 '14... ............15 _ .......

16 . .17 18 19 20.. ..

21 22 23 ........24....-..,-......25..... .

'26 ..... ..... ..27 .. ..28 ...........29...............30 . ..........31 __ ......

Oct.

700600650900

1,000

1,2001,000

900850900

900800850900850

9001,0001,4001,5001,400

1,3001,2001,100

9501,000

1,6001,5001,3001,2001,100

QW1

Nov.

900850000700650

600650760

1,4001,500

1,3001,3001,4003,2003,400

3,2002,8002,4001,9001,600

1,4001,2001,100

950850

800750800800800

Dec.

950

Jan.

340

320

300600700440480

550480480460440

/wn420420400400380

Feb.

400qon

290

Mar.

[ 240

240240

220220200200200

220260300340340

340320300280300300

Apr.

300300320320320

340550800

1,1001,300

1,5001,7001,8002,0002,000

1,8001,600i onn

1,1001,100

1,2001,5003 Ann5,7609,120

8,6606,5305,0303,7803,180

May

2,6902,9005,5707,5605,030

4,5103,4003,7802,9703,940

3,0403,3102,0502,0501,990

1,9301,6401,5902,3002,300

1,7002,220

1,1301,100

945785710710710725

June

1,7001,2001,4001,300

800

750700700750850

900950

1,000800

1,300

2,6002,6002,2001,6001,200

900650750650600

700850850650

. 600

July

480420380354311

296327354380850

1,1001,200

900650500

500750700650550

380306

236211

187172161147151154

Aug.

154161211241215

195215354412418

370321282254227

207199191179169

203227219380800

1,000850700550460360

Sept.

306267236'215219

245267287287343

418406343292258

245249272306306

700850700600850

900750600500420

NOTE. Discharge Jan. 15 to Feb. 2 anti Mar. 14 to Apr. 23, determined from gage heights corrected for backwater effect from ice by means of two discharge measurements and study of weather records. Dis-

, charge Oct. 1 to Nov. 30, June 1 to July 3, July 9-21, Aug. 24-31. and Sept. 21-30 determined from gage : heights corrected for backwater effect from logs by means of four discharge measurements and comparison

. with flow at other stations in Hudson River drainage basin. Discharge Dec. 1 to Jan. 14 and Feb. 3 to Mar. ' 13 estimated by comparison with-flow at other stations in Hudson River Basin, because of lack of gage-height record. Braced figures show mean discharge for periods indicated. '

Monthly, discharge of Hudson River at Gooley, near Indian Lake, N*Y., for-the year ending September SO, 1926

[Drainage area, 41* square miles}- ---

Month

December. ___ ________ ____

March _ ..... __________________

May ______________________June _ . ____________________July...........................................

September _ . __________________


Maximum

1,600 3,400

700 400 340

9,120 7,560 2,600 1,200 1,000

900

9,120

Minimum

600 600

300

200 300 710 600 147 154 215

147

Mean

1,050 1,360

950 402 297 256

2,340 2,480 1,080

452 346 421

954

Per square mile

2.51 3.25 2.27 .962 .711 .612

5.60 5.93 2.58 1.08 .828

1.01

2.28

Run-off in inches

2.89 3.63 2.62 1.11 .74 .71

6.25 6.84 2.88 1.24 .96

1.13

31.00

HUDSON RIVER BASIN 117HUDSON RIVER AT NORTH CREEK, N. Y.

LOCATION. At two-span! steel highway bridge in North Creek, Warren County, immediately above mouth of North Creek.

DBAINAGE ABEA. 792 square miles (revised; measured on topographic maps).RECORDS AVAILABLE. September 21, 1907, to September 30, 1926.GAGE. Chain gage on ^ipstream side of left span of bridge; read by William

Alexander. IDISCHARGE MEASUREMENTS. Made from upstream side of highway bridge or by

wading.CHANNEL AND CONTROL. Heavy gravel; fairly permanent.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9.2 feet at

7.30 a. m. April 25 (discharge, 17,200 second-feet); minimum discharge, about 430 second-feet on July 5.

1907-1926: Maximum stage recorded, 12.0 feet during the evening of March 27, 1913 (dispharge, about 30,000 second-feet); minimum stage, 1.92 feet at 7.30 a. m. and 5 p. m. September 2, 1923 (discharge, 128 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Numerous lakes and ponds in the basin of the upper Hudson

have a decided effect on low-water flow, especially the reservoir at Indian Lake. Many of the reservoirs are used to make flood waves in the spring in connection with log driving.

ACCURACY. Stage-discharge relation practically permanent except as affected by ice. Rating curve revised for use after April 24; curve used October 1 to April 24 well defined between 400 and 7,000 second-feet; curve used April 25 to September 30 well defined between 400 and 12,000 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except for periods noted in footnote to table of idaily discharge. Records good except those for periods of ice effect and those estimated, which are fair.

Discharge measurements of Hudson River at North Creek, N. Y., during the year ending September 30, 1926

Date

Jan. 14 _ ......

Apr. 27 -

Gage height

Feet "3.56

7.30

Dis charge

Sec.-ft. 1,360

77110,400

Date

May 11 ..... .

July 21

Gage height

Feet 5.513.253.55

Dis charge

Sec.-ft. 5,320

1,420

Date

Aug. 11... Aiicr 97

Gage height

Feet 3.383.48

Dis charge

Sec.-ft. 1,2101,350


Daily discharge, in second-feet, of Hudson Riv&r at North Creek, N. Y., for the year ending September 30, 1926

Day

i. ........... ...2..... ....... z....... ........4 5. ... . 6 _.._.._..7..-. ........8. 9... ............10 11 12 _ 13 14...............15

Oct.

845845

1,1001 QUl

2,0201 70A

1,3901 330l[5201,3901 3301 QQft

1,3901.390

Nov.

1,5901,5901,590

1,2101,1501,2101,3902 4.9A

2,7502,4202,2602,920

6.680

Dee.

9901 fwft

9901,040

5,1806,1605,1804 CAA

3,2002,800

9 9AA

1,9001.700

Jan.

1,660

1,3901,6001,500^5001,4001,4001 4001,4001,400

1 4001,3001.300

Feb.

1,3001 3001,3001 OAA

1,3001,2001,2001 2001,1001,100

1,1001 2001.100

Mar.

950

950Qin950900QAA

900900850850800OAA

800800

Apr.

940QQO

940

845845

9901,2101 730

2,1009 9/lft

2,420

3.280

May

4,330

9,35011,7008,1106,3704,8105,5704,0905,3104,5704,3303,0703,2603.260

June

1,8901,9601,3002,7001,0801,030

osn1,0301,0301,1301,1301,1301,1801,0301.890

July

885795670520490710

1 OAA

1,4201,3002,190

2,3502,0401,6101,130

980

Aug.

1,0301,0801,1301,1301,130

750670

1,1301 *)Aft

1,3001,2401,180

885670930

Sept.

1,0801,030

980710630930

1,030750630670710

i50A

75093n

118 STTEFACE WATEE SUPPLY, 1926, PAET I

Daily discharge, in second-feet, of Hudson River at North Creek, N. Y., for the year ending September 30, 1926 Continued

Day

16 .17 .18 . 19 -20

21

23 ------24 25

26 --------27- ---------28 --------29 ..30 ------31

Oct.

1,3901,5202,100

2,260

2,1001 7^£\

1,520i ^on1 660

3,1002,7502 9AH9 IflO1 Q^n1 SM\f\

Nov.

6,1605,6605,1804,2803,470

3,2802 eon

1 eoni *;Qn

1,1501 ^Qfl

QOrt

Dec.

1 4001,100

940QQO

1 1 VI

oftn800

7*\t\1 ficn

2,4202,2602 inn2 100

Jan.

1 Qftrt

1,400

1,7001 ^W)

1,1001,0001,7001,700

1,7001 fiflfl

1,6001,4001,4001,400

Feb.

1,1001,1001,2001,1001,000

1,0001,0001,0001,000

950QCn

Mar.

800

755755755

800

940

1,040

670

515670990

Apr.

3,1002,7502,4201,9501,950

1,8803,6607,480

17,200

14,2009,9907,8106,0905,310

May

2,7002,7003,0704,8103,460

2,7002,8802,3501,7501,480

1,3001,1301,030

98C930980

June

4,3303,8703,2602,5201,960

1,5401,3001,6101,6101,480

1,4201,5401,240

980980

July

8851,0801,3601,6801,610

1,4201,240

840670

1,030

1,0801,0801,0801,0801,0801,080

Aug.

1,030980980980930

9301,0301,0301,2401,480

1,4801,3601,1801,3001,2401,130

Sept.

980980980

1,030980

1,1801,4201,4201,3001 480

1,4201,6101,080

840710

NOTE. Discharge Dec. 10-17 and Jan. 4 to Mar. 11 determined from gage heights corrected for ice effect by means of two discharge measurements, observer's notes, and weather records. Observed gage height doubtful July 4 and 5; mean daily gage height estimated by comparison with records for adjacent stations.

Monthly discharge of Hudson River at North Creek, N. Y., for the year endingSeptember 30, 1926


Month

October-... ___________ ._ ___ . _ _

January.. _ .......... . _ ..

March ___ _ . _ .............

MAy.... ................................... .June _ -. ____ . _____ ..... ___ . __ ..July--. .. .....-.................. ... .August. _ . _ ...- ______ . ___ . ......

The year... __ . _______ ... .......


Maximum

3,100 6,680 6,160 1,700 1,300 1,040

17,200 11,700 4,330 2,350 1,480 1, 610

17,200

Minimum

845 990 755

1,000 950 515 845 930 930 490 670 630

490

Mean

1,740 2,640

. 2,030 1,420 1,120

848 3,940 3,790 1,670 1,180 1,090

986

1,870

Per square mile

2.20 3.33 2.56 1.79 1.41 1.07 4.97 4.79 2.11 1.49 1.38 1.24

2.36

Run-off in inches

2.54 3.72 2.95 2.06 1.47 1.23 5.54 5.52 2.35 1.72 1.59 1.38

32.07

NOTE. The monthly discharge in second-feet per square mile and run-off in inches shown by the table do not represent the natural flow from the basin because of artificial storage mainly in Indian Lake Reser voir. The yearly discharge and run-off doubtless represent more nearly the natural flow.

HUDSON RIVER AT HADIEY, N. Y.

LOCATION. At Hadley, Saratoga County, a quarter of a mile above mouth ofSacandaga River and just below mouth of Lake Luzerne outlet.

DRAINAGE AREA. 1,660 square miles (from Fourth Annual Report of NewYork State Water Supply Commission).

RECORDS AVAILABLE. July 15, 1921, to September 30, 1926. GAGE. Friez 7-day graph water-stage recorder on right bank; inspected by

J. F. Kelly.DISCHARGE MEASUREMENTS. Made from cable 100 yards above gage. CHANNEL AND CONTROL. Solid ledge with some large boulders; practically

permanent.

HUDSON EIVEE BASIN 119

EXTREMES OF DISCHARGE}. Maximum stage during year from water-stage re corder, 16.4 feet at 4 P- na. April 25 (discharge, 26,100 second-feet); mini mum stage, 2.12 feei[ at noon September 14 (discharge, 832 second-feet).

1921-1926: Maxinjmm stage recorded, 19.71 feet at 3.30 p. m. April 12, 1922 (discharge, 33,lkK) second-feet); minimum stage, 1.19 feet at 9.30 a. m. September 3, 1923 (discharge, 362 second-feet) .N

ICE. Stage-discharge relation affected by ice.REGULATION. Discharge regulated to some extent by storage reservoirs at

Indian, Schroon, and Brant Lakes and the mills on Schroon River.ACCURACY. Stage-discharge relation practically permanent during year except

as affected by ice or logs. Rating curve revised slightly for use beginning May 1; curve used prior and subsequent to May 1 well defined between 700 and 25,000 second-feet. Operation of water-stage recorder satisfactory. Daily discharge for periods of no backwater ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of considerable fluctuation in stage, by averaging discharge for intervals of day. For periods of backwater effect from ice or logs daily discharge was ascertained as indicated in footnote to table of daily dis charge. Records excellent except those for periods of backwater from ice or logs, which are fair.

Discharge measurements of Hudson River at Hadley, N.September 30, 1926

during the year ending

Date

Nov. 13 __ ....Nov. 24.. .....Nov. 25 _ .....Jan. 13 _ ......

Gage height

Feet 6.025.094.81

3.50

Dis charge

Sec.-ft. 6,0504,2503,8401,940

Date

Mar. 11 Apr. 22... ......Apr. 29 June? _____

Gage height

Feet 3.017.58

11.343.41

Dis charge

Sec.-ft. 1,5508,370

15,1001,860

Date

July 23 - .July 31. _ .....Aug. 28.........

Gage height

Feet 3.212.94

*3.24

Dis charge

Sec.-ft. 1,7701,4301,640

« Stage-discharge relation affected by ice.* Stage-discharge relation affected by logs on control.

Daily discharge, in second-feet, of Hudson River at Hadley, N. Y., for the year ending September 30, 1926

. Day

I ..-........2...............3 ........ -4.. .............5...-.-..-...

6.. ........ ..7-..--.-..... .8 ..9... .........10. . . ......

11-.. . .12.-. - _..13 ..14.. ..._...... ..16 . .... ..-.

16 . 17-.... 18-.. ........19.. .............20.. .............

Oct.

2,2001,9201,8602,0302,620

3,0302,7602,3202,2002,500

2,7002,5002,4409 44ft2,440

2,3202,4402,9803,3103.460

Nov.

3, 170 !2,9602,9602,630-

2,5002,5002, 760 ;3,680:4, 060

3,980'3.680:5, 120

8,570;

9,290 !9,290;8.3907,3306.4801

Dee.

2,7002,7002,6302,7003,340

7,9409,6508,3907,3305,980

5,3405,0204,7004,2203,610

3,2003,0002,6002,4002.200

Jan.

2,6002,2002,0002,4002,400

2,4002,4002,0002,0001,900

1,9001,9002,0001,9001,900

1,8001,8002,0003,0003.400

Feb.

2,4002,0002,2002,0002,000

2,0001,9001,8001,8001,700

1,7001,8001,7001,7001,700

1,7001,7001,6001,7001.700

Mar.

1 600l!7001,7001,5001,400

1,4001,4001,4001,4001,400

1,4001,4001,4001,4001,300

1,3001,3001,3001,3001.300

Apr.

2,2002,2002,0001,9002,000

2,0002,2002,4003,8005,000

5,0005,0005,000a 5008,500

8,0006,9906,3105,8205.340

May

11,20011,50012,60015, 70014,500

11,30010,1008,8808,5407,860

8,2007,3506,8405,840.5,840

5,6805,5204,8805,3605.200

June

2,2103,6502,7003,1102,450

2,0901,9802,0302,1502,090

2,1502,0302,0302,0302,550

5,7005,5205,0404,4003.700

July

1,8601,7001,5501,2401,560

1,6501,3801,9201,9802,630

3,3203,1802,7002,2701,860

1,6501,6001,9202,4502.270

Aug.

1,4601,7001,8101,6501,550

1,4101,0801,1901,6001.6EO

1,6501,5601,4601,1201,010

1,3201,3201,3201,2801,280

Sept.

1,400'1,3001,2001,100

950

1,1001,4001,3001,0001,300

1,2001,1001,000

9001,200

1,4CO1,4001,4001,5CO1,500


Daily discharge, in second-feet, of Hudson River at Hadley, N. Y., for the year ending September SO, 1926 Continued

Day

21. . ......... .22 23 24 25

26 27 .. ..28. ...........29.... ...........30. 31. . ...

Oct.

3,2403,0302,7602,6303 1 fin

5,3405,0204,3803,980

3,460

Nov.

5,980

4,7004,2203,760

3,4603,1703,4603,1702,820

Dec.

2,6002,4002,2002,000

1,700i son2,6002,6002,4002,600

Jan.

9 fiflA9 9fln1 9002,000o finn

9 Ann2,4002,4002,000o onft

2,200

Feb.

i fifin1,6001,6001,5001 RArt

1,5001,7001,600

.......

Mar.

1,4001,5001,7002,0002,200

2,4009 4nn2,0001,8001,700o nun

Apr.

5,3407,920

19 inn14,80023,200

24,20020,70017,00014,90013,000

May

5,2004,0805,0403,7703,180

2,9702,7702,5102,3302,1502,150

June

3,1102,8402,6402,9002,700

2,7003.04C2,5802,1502,030

July

2,0901,9201,7001,2401,160

1,5501,5001,5001,6001,5501,500

Aug.

1,2401,2401,3601,6002,000

1,9001,8001,6001,6001,6001,500

Sept.

1,4001,7001,9001,8002,000

,2,2002,2001,9001,5001,300

NOTE. Discharge Dec. 16 to Apr. 16 determined from gage heights corrected for ice eflect by means of two discharge measurements, observer's notes, and weather records. Discharge Aug. 25 to Sept. 30 determined from gage heights corrected for backwater from logs by means of one discharge measurement and comparison with flow at other stations on Hudson River.

Monthly discharge of Hudson River at Hadley, N. Y., for the year endingSeptember SO, 1926


Month

June - .. ______ . . -. July . -. . ... . .


Maximum

5,340 9,290

' 9,650 3,400 2,400 2,400

24,200 15,700 5,700 3,320 2,000 2,200

24,200

Minimum

1,860 2,500 1,500 1,800 1,500 1,300 1,900 2,150 1,980 1,160 1,010

900

900

Mean

2,940 4,700 3,700 2,220 1,760 1,590 8,040 6,740 2,880 1,870 1,480 1,420

3,280

Persquare mile

1.77 2.83 2.23 1.34 1.06 .958

4.84 4.06 1.73 1.13 .892 .855

1.98

Run-off in inches

2.04 3.16 2.57 1.54 1.10 1.10 5.40 4.68 1.93 1.30 1.03 .95

26.80

NOTE. The monthly discharge in second-feet per square mile and run-off in inches shown by the table do not necessarily represent the natural flow from the drainage basin because of artificial storage, mainly in Indian Lake Reservoir and Schroon and Brant Lakes. The yearly discharge and run-off doubtless rep resent very nearly the natural flow.

HUDSON KIVER AT MECHANICVILLE, N. Y.

LOCATION. At Duncan Dam of West Virginia Pulp & Paper Co. in Mechanic- ville, Saratoga County> 3,700 feet above mouth of Anthony Kill, 1}£ miles below mouth of Hoosic River, and 9 miles above mouth of Mohawk River.

DBAINAGE AREA. 4,500 square miles.RECORDS AVAILABLE. October 1, 1887, to September 30, 1926.GAGE. Water-stage recorder at dam, installed in 1910.EXTREMES OF DISCHARGE. Maximum daily discharge during year, 51,800 second-

feet April 26; minimum daily discharge, 995 second-feet September 5.1887-1926: Maximum discharge recorded, 120,000 second-feet at 6 a. m.

March 28, 1913. The plant is occasionally shut down and the flow of the river stored in the pond so that the discharge below station at these times becomes practically zero.

121

DIVERSIONS. Water is diverted from Hudson River through the Glens Falls feeder and the old Champlain Canal into the summit level of the Barge Canal. A portion flows north into Lake Champlain. No correction has been made for this diversion.

ACCURACY. Discharge over spillway determined from a rating curve based on coefficients derived by the United States Geological Survey for dams of ogee section. Discharge through turbines computed from records of their operation. Discharge at lock and through Barge Canal turbines at lock computed from records of the number of lockages a day. Comparative studies with stations above Mechanicville indicate that the record published in this report is low by amounts ranging from 5 to 20 per cent, the yearly average being about 10 per cent low.

COOPERATION. Discharge over the spillway and through turbines of the West Virginia Pulp & Paper Co. furnished by Mr. W. J. Barnes, engineer of the company." Record of lockages obtained from the office of the State super intendent of public works.

Daily discharge, in second-feet, of Hudson River at Mechanicville, N. Y., for the year ending September SO, 1926

Day

l. ___ .....2....... ........0

^... ............5

6 ___ 1... ....... .... .8.. _____ -9 _____ .....10

11.. __ ......12. 13 _14. 15 _ ..

16 17 18 19 20. __

21 22 23 24 25.

26 - _ .27 28.. . 29 _30 .31. ...........

Oct.

4,8004,9704,0302,7604,470

6,1505,8205,0805,0005,320

5,6005,2905,2304,6604,800

5,2804,9205,3905,9406,380

6 4306,0206,1205,5709 ifin

1O AftA

14,40010 nnn

13,40012,10010,700

Nov.

10,5009,8508,3308,0407,180

7,1705,8808,050

12,20012,?00

11 90011,30014,80019,60020,700

29,20027,000M nflft18 40016? 400

14 9Afl19 en/I

11,9009 C7n8,780

7,7708,8709 9408 O<m

8 7fifl

Dec.

7,8707,1706,9307,5708,540

14,20019,20018,70017,20014,200

11,60011,20010,1008,7609 44O,

7,7506,3006,7505,660<i 31 fi

5,5907,3206,5505,8309 osft

4,0702,650S oftfi4,8504,7104,490

Jan.

3,9304,9303,3604,8304,950

4,8304,7505,4803,8902,530

9 RRfl

3,8103,8004,0804,220

3,4302,2004,290

11,4008,870

7,5206,6806,3804,000c con

5,8305,5705,360z <un4,4202,470

Feb.

4,7704,9304,7104,4404,850

4,2702,6603,5004,3604,060

3,5703,6503,3202,7803,710

4,0404,180<t QQfl

4,0804,220

3,260<i 09n4,1703,870A nnn

5,0604,7003,470

Mar.

3,9204,4704,4104.14Q<i Q4n

3,7802,2004,0704,4704,270

4,330*4,340,3,9901,7503 AQA

3,9603,8304,1803,6504 VTfi

9 4Qfi

6,12011,00013,000id. Qnft

14,50011,2009 790

10,20010,2009,910

Apr.

9,7008,3907 980

10,50011 400

11,20012,200IQ 3Oft22,70023 goo

22,20022,80022,30022,90025,500

23,70021,70019,00016,90015,000

14 00017,10026,50033,60045,000

51,80047,600OQ Kftn

34,70029,500

May

25,70023,80026,10031,00030,500

25,50022,20018,70017,70016,500

16,10014,30013,70011,900in onn

9,5509,6508,6108,210

8,8207; 9707,6207,920

4 fifin5,2305,0703,4909 ocn1 780

June

3,9604,6706,3805,7405,970

5,2804,2104 ion4,2504,580

4,8103,8402,8204,3805,280

11,60010 9009 <jon

8,030

7,6906,9205,0404,7604,710

4 1403,0704 7405^5104,910

July

4,3603,6702,5802,3601,340

1,900

2,8309, 19.fi

3,180

4,9206,9106,5605,8704,230

4 fifift3,310O f\A{\

2,7503,160

3,5603 inn

9 ono9 *5Qfii Kin

1,4109 OftA9 AQfl9 flftft

2,7402,210

Aug.

1,4301,8804 Q7fi

4,7803,870

3,3709, (Mfl

1,8202,0302,520

2,4102,5002,6102,2601,540

1,8002, 1702,1702,1201,980

1,9501,2801,4301,6203,530

3,5603,5603,2401,7402,2802,410

Sept.

2,4202,1802,6202,180

One

1,0701,5103,8603,5204,050,

4,2903,2203,1002,7502,920,

2,5402,2802,2301,5001,300

1,7802,3802,3509, 7on3,100

2,1704,1204 0003,480Q OQft,

NOTE. Flashboards damaged by high water Nov. 14; additional damage Nov. 16; damaged by ice during March; completely destroyed Apr. 4; partly installed May 29; reinstallation completed May 31; discharge corrected accordingly.


Monthly discharge of Hudson River at Mechanicville, N. Y., for the year endingSeptember SO, 1926


Month

July... -. .-.-.. .....................

The year.-..-- --.. _ __ .. __ .....


Maximum

14,400 29,200 19,200 11,400 5,060

14,900 51,800 31,000 11,600 6,910 4,970 4,290

51.800

Minimum

2,760 5,880 2,650 2,200 2,660 1,750 7,980 1,780 2,820 1,340 1,280

995

995

Mean

6,860 12,800 8,240 4,890 4,020 6,160

22,900 13,300 5,660 3,170 2,510 2,670

7.760

Per square mile

1.52 2.84 1.83 1.09 .893

1.37 5.09 2.96 1.26 .704 -.558 .593

1.72

Run-off in inches

1.75 3.17 2.11 1.26 .93

1.58 5.68 3.41 1.41 .81 .64 .66

23.41

NOTE. The monthly discharge in second-feet per square mile and run-off in inches shown by the table do not necessarily represent the natural flow from the basin because of artificial storage. See " Diversions " above.

INDIAN LAKE RESERVOIR NEAR INDIAN LAKE, N. Y.

LOCATION. At masonry storage dam at outlet of Indian Lake, 2 miles south ofIndian Lake village, Hamilton County, and 7% miles above mouth of IndianRiver.

DRAINAGE AREA. 131 square miles, including 9.3 square miles of water surfaceof Indian Lake at the elevation of crest of spillway (measured on topographicmaps).

RECORDS AVAILABLE. July 22, 1900, to September 30, 1926. GAGE. Chain gage on dam near gate house; read by Frank Brown from October

1 to January 15, by J. L. Fish from January 16 to February 6, and by GeorgeCampney from February 7 to September 30. Mean elevation of crest ofspillway is at gage height 33.38 feet.

EXTREMES OF STAGE. Maximum elevation of water surface recorded during year,35.55 feet November 15 and 16; minimum elevation recorded, 7.95 feetApril 7.

1900-1926: Maximum elevation recorded, 38.8 feet March 28, 1913;minimum elevation, 2.0 feet March 9-18, 1907, and January 3-17, 1910.

REGULATION. At ordinary stages discharge is completely regulated by theoperation of sluice gates. Water is held in storage until needed to augmentthe flow of the upper Hudson during the low-water period. Storage capacityis about 4.7 billion cubic feet, equivalent to a flow of about 600 second-feet for90 days.

COOPERATION. Record of gate openings furnished by Indian River Co.

Daily gage height, in feet, of Indian Lake Reservoir near Indian Lake, N. Y. t for the year ending September SO, 1926

Day

1... .......2...............3 ............4...............5-...--.-.. .....6_. .............7... ........8...............9..............10-..-....,...

Oct.

30.3530.4530.6530.730.7530.931.0531.1531.3531.45

Nov.

34.9534.9534.9534.9534.9534.934.8534.8534.9534.95

Dec.

34.534.6534.7534.8534.9534.9534. 95.34.8534.7534.65

Jan.

31.3531.3530.9530.4530.1530.0529.3528.9528.9528.65

Feb.

24.3523.7523.3522.5522.4521.8521.3521.0520.6520.35

Mar.

14.9514.8514.5514.2514.0513.7513.4513.1512.8512.75

Apr.

9.259.059.058.558.158.157.958.358.759.15

May

23.2523.9525.5526.8527.5528.0528.6529.2529.9530.25

June

32.7532.9532.9533.1533.2533.3533.3533.4533.4533.65

July

34.4534.45344534.453445344534.0533.7533.4533.45

Aug.

27. 1527.5527.2526.7526.4526.2626.2525.9525.6525.15

Sept.

20.0519.7519.5519.3519.2518.9518.9518.9518.9518.95


Daily gage height, in feet, of Indian Lake Reservoir near Indian Lake, N. Y.,for the year ending September 80, 1926 Continued

Day

11 _ ............12...............13...............14.. ____ . .....15.... .... .......

16 17...............18-...... .19...............20... ............

21 ...... 22...............23 .. 24..... ....... ...25..... ..........

26..... ........ ..27 28. 29...............30...............31.... ...........

Oct.

31.5531.6531.8531.9532.05

32.1532.3532.532.5532.75

32.9533.1533.2533.3533.55

33.9534.3534.6534.834.9534.95

Nov.

35.0535.1535.2535.3535.55

35.5535.3535.1534.9534.9

34.5534.3534.3534.2634.15

34.2534.3534.3534.434.45

Dec.

34.4534.2534.1533.9533.85

33.8533.8533.8533.85

33.7533.6533.5533.5533.45

33.4532.9532.0531.9531.4531.45

Jan.

28.1527.7527.3527.0526.95

26.2525.7525.4525.4525. 75

25.9526.1526.3525.9525.55

25.2525.0524.8524.6524.5524.15

Feb.

20.0519.8519.4519.1518.95

18.5518.1518.0517, 7517.35

17.1516.8516.5516.2515.95

15.8515.5515.25

Mar.

12.5512.2512.1511.7511.55

11.2511.0510.9510.7510.45

10.3510.159.959.759.65

9.559.65

9.659.459.55

Apr.

9.659.95

10.4510.7511.15

11.6511.9512.3512.6512.75

12.9513.5514.7516.2518.95

20.3521.3521.9522.3522.85

May

30.6530.8531.1531.4531.65

31.6531.6531.6531.6531.55

31.6531.8531.9532.2532.15

32.2532.3532.4532.5532.5532.65

June

33.6533.7533.7533.9534.25

34.8535.2535.3535.2535.25

35.2535.1534.9534.6534.55

34.4534.4534.4534.4534.45

July

33.5533.5533.4533.3533.35

33.1533.1532.7532.2532.05

31.5531.2531.1530.9530.55

30.0529.65

28.8528.5528.15

Aug.

24.8524.5524.3524.2523.85

23.4523.0522.6522.4522.15

21.6521.4521.2521.2521.45

21.4521.5521.4521.1520.7520.35

Sept.

18.9518.9518.9518.6518.25

17.9517.7517.3517.1516.95

16.5516.2516.0516.1516.35

16.2516.1516.1516.15

INDIAN RIVER NEAR INDIAN LAKE, N. Y. 1

LOCATION. Three-fourths mile below dam at outlet of Indian Lake, 2 miles south of Indian Lake village, Hamilton County, 1 mile above mouth of Big Brook, and 6}£ miles above mouth of Indian River.

DRAINAGE AREA. 132 square miles (measured on topographic maps).RECORDS AVAILABLE. July 1, 1912, to June 30, 1914; June 5, 1915, to September

30, 1926. !GAGE. Gurley 7-day graph water-stage recorder on right bank; inspected by

Frank Brown, J. L. Fish, and George Campney.DISCHARGE MEASUREMENTS. Made from cable near gage or by wading.CHANNEL AND CONTROL. Control is a reef of coarse gravel; practically permanent.EXTREMES OF DISCHARGE. Maximum stage during year as recorded by hydrog-

rapher when inspecting recorder, 4.9 feet at 10 a. m. November 15 (dis charge, 1,580 second-feet); minimum discharge occurs when all gates in dam are closed and there is no flow over spillway.

1912-1926: Maximum stage recorded, 7.8 feet at 4 p. m. March 28, 1913 (discharge, 3,460 second-feet); minimum discharge occurs when all gates in dam are closed and there is no flow over spillway.

ICE. Stage-discharge relation occasionally slightly affected by ice.REGULATION. Discharge is regulated by operation of sluice gates at Indian Lake

Dam.ACCURACY. Stage-discharge relation permanent. Rating curve well defined.

Operation of water-stage recorder satisfactory; some record lacking for period November to January owing to inability to obtain observer. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days when there were changes in opening of sluice gates at Indian-Lake Dam, by averaging discharge for intervals of the day; for periods of no record daily discharge was ascertained as indicated in footnote to table of daily discharge. Records good except those for periods during which recorder was not operating, for which they are fair.

63435 30 9


Discharge measurements of Indian River near Indian Lake, N. Y., during the year . ending September 30, 1926

Date

Nov. 15 .. Jan. 14.... ....Mar. 13. ......

Gage height

Feet 4.913.542.62

Dis charge

Sec.-ft. 1,630

824469

Date

Apr. 24-...--...

July 20.. .......

Gage height

Feet 0.34.19

3.72

Dis charge

Sec.-ft. 7.862.65

905

Date

Aug. 26 ------

Gage height

Feet 1.67

Dis charge

Sec.-ft. 202

Daily discharge, in second-feet, of Indian River near Indian Lake, N. Y., for the year ending September 30, 1926

Day

1 . ..... -- 2... ............3 5-...-.....-.-.5 .

7...............8.. .............9 -- 10

11 12. 13 .14.-...-.----.--.15

16 17..... ...18... ............19 20

21 . .22 ...........23 24-. .25

26--.. ---------27...-.-- _ ....28 29 30 31 _

Oct.

1213

260556223

1717171918

1717171717

1720212121

2122222230

29313579150220

Nov.

220

240270990

1,4601,550

1,5201,4001,2801,2001,140

854350130120

1-

Dec.

1 Mf *360

1,0301,0201,020

780590590580250

20

980QKA

950940420

Jan.

25480930920910

890880880870

860850840830824

824QrtO

802495

5.2

3 Q

437

779

77Q770

7797*77*7

757

Feb.

735735735735714

714714693693693

673673653653

634fJQj.

614614

K(\A

575575

556

Mar.

537537537519519

519501501484484

484484

466466

449

432432

422416410

2093.62 7

81384

Apr.

381372369366363

3603541696.66.6

6.25.97.9

13

6.2

2.72.52.5

3.71713

15

6.23.6c O

6.2A Q

May

4.64.65.2

342170

101576110

200

219221213256355

537K1Q

519273

7.13.93.93.63.6

q*fi

S o

3 Q

3.63.6

June

3.63.63.22.92.7

2.72.72.93.63.6

3.93.94.24.215

26

201315303

631757714533OQO

1QQ

126126126

July

124114585035

395995896824535

265265262259259

259590920920920

920

329687Q71

Q71

848QAQ

QAQ

Aug.

824824824802525

327583802779779

779584312551757

75770 K

714

I14 ?14693405tQQ

1QQ

200KnQ

714fiQO

RQO

Sept.

693;

42ft257506;

369186186186

186,271

634

614594

KQ4.

57548700 K

174

172170

NOTE. Owing to inability to obtain observer, gage-height record is lacking Oct. 31 to Nov. 14 and Nov. 22 to Jan 14; discharge ascertained by means of records of stage and gate changes at Indian Lake Reservoir. Recorder not operating properly Feb. 1-6, 12, and 13; discharge determined from estimated gage-height graph. Braced figures show mean discharge for periods indicated.


Monthly discharge of Indian River near Indian Lake, N. Y., for the year endingSeptember SO, 1926


Month

July................... .....................


Maximum

556 1,550 1,030

930 735 537 381 537 757 995 824 693

1,550

Minimum

12

3.9556

2.7 2.5 3.2 2.7

35 198 170

2.5

Mean

64.5 496 424 692 650 416 96.3

150 163 563 628 419

396

Per square mile

0.489 3.76 3.21 5.24 4.92 3.15 .730

1.14 1.23 4.27 4.76 3.17

3.00

Run-off in inches

0.56 4.20 3.70 6.04 5.12 3.63 .81

1.31 1.37 4.92 5.49 3.54

40.69!

NOTE. Elevation of water surface in Indian Lake Reservoir at end of year was 14.3 feet lower than at begirining of year, corresponding to a loss in storage of 2,280 million cubic feet. This is equivalent to a run-off of 72.3 second-feet, 0.55 second-foot per square mile, or 7.44 inches on drainage area.

NORTH CREEK AT NORTH CREEK, N. Y.

LOCATION. 125 feet below dam in North Creek, Warren County, and 1,000 feet above mouth.

DRAINAGE AREA. 21.8 square miles (measured on topographic maps).RECORDS AVAILABLE. July 9, 1924, to September 30, 1926.GAGE. Vertical staff on left bank; read by William R. Alexander.DISCHARGE MEASUREMENTS. Made from highway bridge a short distance above

dam or by wading.CHANNEL AND CONTROL. Gravel and small boulders; shifts occasionally.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 5.5 feet at

7.30 a. m. April 25 (discharge, corrected for backwater from Hudson River, 715 second-feet); minimum stage, 0.94 foot at 5 p. m. September 1 (discharge, 0.3 second-foot; probably caused by regulation.

, 1924-1926: Maximum and minimum stages for period of record, occurred in 1926, as given above.

ICE. Stage-discharge relation slightly affected by ice.REGULATION. The intentional or accidental closure of a small spillway notch in

old dam just above gage produces a marked effect on low-water discharge over a period of a few days. Such a condition probably prevailed September 1-4, 1926.

ACCURACY. Stage-discharge relation for medium and low stages changed during flood of April 25; affected by ice during periods from December to March and by backwater from Hudson River during a few days in April and May. Rating curve used prior to April 25 well defined between 6 and 300 second- feet; curve used subsequent to that date, well defined between 3 and 300 second-feet. Gage read to hundredths twice daily. Daily discharge ascer tained by applying mean daily gage height to rating table, except for periods of backwater from ice or from Hudson River for which it was ascertained as indicated in footnote to table of daily discharge. Records good except for periods of backwater from ice or from Hudson River for which they are fair.


Discharge measurements of North Creek at North Creek, N. Y., during the year ending September 30, 1926

Date

Nov. 14. .....

Mar. 15--......Apr. 23

Gage height

Feet 3.06

« 1.57 1.52' 4.11

Dis charge

Sec.-ft. 234

12.7511

Date

Do.. ........

May 11. .......

Gage height

Feet

2.25

Dis charge

Sec.-ft.652CK7

25471.8

Date

Aug. 27

Crage height

Feet 1.701.341.301.47

Dis charge

Sec.-ft. 22.26.224.34

11.2

<* Stage-discharge relation affected by ice.* Stage-discharge relation affected by backwater from Hudson River..

Daily discharge, in second-feet, of North Creek at North Creek, N. Y., for the year ending September 30, 1926

Day

1- . ....23 .-. 45.

67.8 ... ..9_. ____________10 -

11 ------12 . 13.1415

16 1718 ~ 19 20-

21 22. 23. 24 .

26 __._ 27 ............ 28 29 '30ot

, Oct.

1513394652

4127212344

3332302725

3045474747

3130251891

1639156454336

Nov.

3630292Q24

24257210666

4538282238142

211123726152

4643424236

2829453327

Dec.

252S249Q

45

409132917252

4238343230

282626-2626

2729302928

242322201816

Jan.

1817151416

2224181614

1413131314

1413

1410672

5643362824

2020181716i ^

Feb.

1816141415

1617161412

1213141616

1614141414

1414121212

121415

Mar.

1818171414

1214151414

1314121313

1212111314

1618182431

343027262426

Apr.

2832303029

28283398174

132132142224238

1861321235245

52430547430600

369152163198163

May

152163452163123

10698919184

8477716555

4543434343

3931.30

35

242221181519

June

2439444130

2222313631

25211921

238

152106714331

2725222019

2125221623

July

1514121110

10109.21271

4338291614

119.28.08.07.3

6.25.65.25.24.5

4.54.54.87.37.07.0

Aug.

6.68.4107.67.0

7.07.37.36.65.6

4.54.54.34.14.1

4.34.54.54.34.1

3.94.18.01326

21128.86.64.83.9

Sept.

0.6.4.4

1.14.1

2235192731

2016107.06.6

6.65.96.66.65.9

5.24.85.2

4242

2014118.88.4

NOTE. Discharge Dec. 11-19, Dec. 28 to Jan. 18, Jan. 24 to Feb. 28, Mar. 4-18, Mar 29 to Apr. 1, and Apr. 6-7 determined from gage heights corrected for backwater from ice by means of 2 discharge measurements, observer's notes, and weather records. Discharge Apr. 23-28 and May 3-5 determined from gage heights cor rected for backwater from Hudson River by means of 4 high-stage discharge measurements made during year.


Monthly discharge of North Creek at North Creek, N. Y., for the year endingSeptember SO, 1926


Month

October--.....November.. ...... _ .... ..December....January......... _ ........... __ .. __ .....

April. .............. __ ...

June _ .........July ....__.__ __._ _

September........... .. ...

The year............-. -.. _ ...


Maximum

163 282 409 106

18 34

600 452 238 71 26 42

600

Minimum

13 24 16 13 12 11 28 15 16 4.5 3.9 .4

.4

Mean

42.4 69.1 47.7 24.3 14.3 17.8

167 76.9 42.2 13.5 7.38

13.1

44.6

Persquare mile

1.94 3.17 2.19 1.11 .656 .817

7.66 3.53 1.94 .619 .339 .601

2.05

Run-off in inches

2.24 3.54 2.52 1.28 .68 .94

8.55 4.07 2.16 .71 .39 .67

27.75

SCHROOfr RIVER AT RIVERBANK, N. Y.

LOCATION. At steel highway bridge at Riverbank, Warren County ̂ 9 miles below Schroon Lake Reservoir and 12 miles above mouth of river.

DRAINAGE AREA. 534 square miles.RECORDS AVAILABLE. September 2, 1907, to September 30, 1926.GAGE. Au continuous water-stage recorder on right bank 30 feet above high

way bridge; installed October 3, 1925; inspected by J. H. Roberts and W. C. Roberts. Prior to October 3, 1925, chain gage on upstream side of high way bridge.

DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Boulders and gravel; shifts occasionally. Logs

occasionally become lodged on control causing backwater.EXTREMES OP DISCHARGE. Maximum stage during year from water-stage

recorder, 9.6 feet at 5 p. m. April 26 (discharge, 7,720 second-feet); minimum stage, 1.50 feet several times in September (discharge, 191 second-feet),

1907-1926: Maximum stage recorded, 10.7 feet at 5 p. m. March 28, 1913 (discharge, about 13,500 second-feet); minimum stage, 0.85 foot at 5 p. m. October 17, 1909 (discharge, 28 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Flow affected by storage in Schroon and Brant Lakes.ACCURACY. Stage-discharge relation permanent during year except as affected

by ice. Separate rating curves developed for chain and automatic gages on account of slope divergence at stages above low water; curve for chain gage used October 1-3 well defined; curve for automatic gage used October 4 to September 30, well defined between 200 and 6,000 second-feet. Chain gage read to hundredths twice daily. Operation of water-stage recorder unsatisfactory at times. Daily discharge for days when chain gage was used ascertained by applying mean daily gage height to rating table; for periods during which recorder operated daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspec tion or, for days of considerable fluctuation in stage, by averaging dis charge for intervals of the day; for periods of ice effect and periods of no record discharge ascertained as indicated in footnote to table of daily dis charge. Records good except those for period of ice effect, which are fair.

128 SUEFACE WATER SUPPLY, 1926, PART I

Discharge measurements of Schroon River at Riverbank, N. Y., during the year endingSeptember 30, 1926

Date

Oct. 3__. .......Jan. 19-. .......Mar. 12. ......

Gage height

Feet 2.79

°2.81= 2.28

Dis charge

Sec.-ft.

555382

Date Gage height

Feet

5.102.74

Dis charge

Sec.-ft. 6,3602,520

659

Date

July 22. ........Aug. 12 . Aug. 28... ......

Gage height

Feet 2.101.641.64

Dis charge

Sec.-ft. 393229229


Daily discharge, in second-feet, of Schroon River at Riverbank, N. Y., for the year ending September 30, 1926

Day

1. --...---- -----2... ..... ------3...... ......4... ____________5.... ...........

78 . _.-- .. .9___ __________10 .

11. . ..........12-_. ___-____._..13_ ___.. .14 _ __15

17...-. ---____..18 19______. ...._.__20

21 .22..... ...23... ...-.._.____2425... . _________

26 2728 29 30. ___________31. ... _

Oct.

760675702710765

792792792820820

792792820765685

635685710738765

792792820820850

1,0001,1801,1801,2101,2101,180

Nov.

1,1001,1001,0701,000972

910910880910940

940940

1,0401,2401,460

1,7501,9302,0201,9801,930

1,8401,7001,6201,5001,390

1,3201,2401,2101,1801,380

Dec.

1,5401,5801,5001,3901,320

1,2401,1801,070972940

880820820792765

765

685685940

1,1001,4601,620940750

650600600

550

Jan.

550550550500550

550550550550

500480500500

550550550

600550550550500

500480480480460

Feb.

460440440440440

440420420420420

400400400380380

380380380380380

380380380380360

380380380

Mar.

380400400380360

360360360360360

360360360340300

300300280280280

300340380400454

493497480467489502

Apr.

511511520533538

547586635792972

1,2401,4201,6201,8802,250

2,4002,5002,4002,3002,200

2,0602,3003,0004,1505,930

7,4607,3306,4205,6905,090

May

4,6104,2604,1504,3704,370

4,0403,6003,3003,1002,800

2,6002,3502,2002,0601,880

1,7501,6201,5401,4201,350

1,2401,2101,1801,1001,070

1,000940910850820820

June

792792765738710

685660660660.660

635610586561660

738880940

1,0001,000

940910880820765

738738710685710

July

660610473362347

347326319322397

471500520540538

511484454446421

405385359351333

322329305308301281

Aug.

278271281268265

259262259243243

240234228225222

219219213211208

205202

. 210220250

240230225219211202

Sept.

199199197194191

197199194197211

197197194195195

200200200200

197191191211211

202199205202197

NOTE. Discharge Dec. 25 to Mar. 24 determined from fragmentary gage-height record corrected for ice effect by means of two discharge measurements, by study of weather records, and by comparison with flow of adjacent streams. Discharge Dec. 20, 24, July 12-14, Aug. 23-27, Sept. 13-20, and 27 ascertained by comparison with flow of adjacent streams on account of lack of gage-height record. Chain gage readings used Oct. 1-3, Jan. 3. 10-16, 30, Feb. 7, 14, 20, 28, Mar. 1-8, 10, 11, and Sept. 21-26.


Monthly discharge of Schroon River at Riverbank, N. Y., for the year endingSeptember SO, 1926

[Drainage area, 534 square milesl

Month

OctoberNovember -December- -----

February _ _ _MarchApril...May.--_-June _ .---_- . _ .-July..-August- .September-., __- ._-.


Maximum

1,210 2,020 1,620

600 460 502

7,460 4,610 1,000

660 281 211

7,460

Minimum

635 880 550 460 360 280 511 820 561 281 202 191

191

Mean

840 1,310

970 527 401 377

2,530 2,210

754 411 235 199

898

Per square mile

1.57 2.45 1.82 .987 .751 .706

4.74 4.14 1.41 .770 .440 .373

1.68

Run-off in inches

1.81 2.73 2.10 1.14.78 .81

5.29 4.77 1.57 .89 .51 .42

22.82

NOTE. The monthly discharge in second-feet per square mile and run-off in inches shown by the table do not necessarily represent the natural flow from the drainage basin because of artificial storage in Schroon and Brant Lakes.

SACANDAGA RIVER NEAR HOPE, N. 7.

LOCATION. \% miles below junction of East and West Branches, 4}£ miles above Hope, Hamilton County, and 12 miles above Northville.

DRAINAGE AREA. 494 square miles (measured on topographic maps).RECORDS AVAILABLE. September 15, 1911, to September 30, 1926.GAGE. Staff in three sections on left bank, the lower inclined, the middle and

upper vertical; read by Melvin Willis.DISCHARGE MEASUREMENTS. Made from cable 100 feet below gage or by wading.CHANNEL AND CONTROL. Rocky; practically permanent.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9.0 feet at

6.30 p. m. April 25 (discharge, about 18,600 second-feet); minimum stage, 1.55 feet at 6.30 p. m. August 21 (discharge, 108 second-feet).

1911-1926: Maximum stage recorded, 11.7 feet during flood of March 25-30, 1913, determined by leveling from floodmarks (discharge above limits of rating curve); minimum stage, 1.17 feet at 7.55 a. m. September 30, 1913 (discharge, about 16 second-feet).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent except as affected by ice.

Rating curve well defined below 10,000 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two daily readings and averaging discharge for intervals of the day, except for period of ice effect for which it was ascertained as indicated in footnote to table of daily dis charge. Records only fair on account of unreliable gage-height record.

Discharge measurements of Sacandaga River near Hope, N. Y., during the year ending September 30, 1926

Date

Mar. 7 .. May 9 ___ ...

Gage height

Feet »3.28

4.82

Dis charge

Sec.-ft. 364

3,130

Date Gage height

Feet 4.282.97

Dis charge

Sec.-ft. 2,300

795

Date

July?. Aug. 29_. -.-_.__

Gage height

Feet 2.322.24

Dis charge

Sec.-ft. 380362


130

Daily di , in second-feet, of Sacandaga River near Hope, N. Y., for the year ending September 30, 1926

Day

1... . ..... ...2.... ...... ..3. ......... ..4..--...-..- _ .5 ..........

6.. ........... ..7... ........... .8 9.. ....... ... ...

10

11 12 13 14.... ..... ......15

16. 17 18 19 20

21 .22.. ..23. ...........24...............25

26 27 - 28... ...29 30 ..31 .

Oct.

324348900

1,1401,140

1,140992730812900

855730652580615

580580546514

514483454483

4,1302,7102,0801,6801,5601,450

Nov.

1,2901,1401,040

900812

9002,3303,6402,230

1,8101,5604,6206,8208,000

8,5006,0003,5002,5002,000

1,7001 <t>tf)1,5601 4-^ift

1 190

1,0901,0901,3401,3401,340

Dec.

1,2401,1101,1901,2901,680

8,0107,4304,050

1,810

1,5601,3401,3401,2901,240

1,040Qfin

730

690690690650600

550

550

Jan.

550KKfl

550

550KfiO

500500480

ARf\

4404204fin

400

420

700i 3nn1 OHO

1,4001,000

950850700

600

550550Ken

600

Feb.

550500500500480

460440440

420

480

460

dd ft420440440440

10040049O

4fiOAA(\

Mar.

440440420400400

380360380400420

420420

400420

420420AA{\

460460500650700

850

950950

1,0001,100

Apr.

1,1001,000

900850850

9001,0001,6802,5402,880

2,8803,0603,2503,2503,060

2,8802,3802 0801,6801,560

1,6803,4404,6408,580

18, 100

16, 00012, 60011, 70010,1009,320

May

8,5907,9007,2406,6104,960

4,4904,0503,6403,4402,880

2,7102,5402,3802,0801,810

1,6801,4501,4501,3401,340

1,2401,090

700

June

950

855900

1,0401,040

900

770

730812

1,560

3,4402,0801,8101,6801,560

1,3401,1901,010

855730

812900945855770

July

652546483398324

348372348302

1,560

1,5601,340

992615483

398372

240

Aug.

425425398372324

302280240229211

194172155144129

122115115115115

110124480992652

580483

425348302280

Sept.

240218204218425

546546514652

1,680

1,240

465

280260

280324580770652

NOTE. Discharge Dec. 24 to Apr. 7 determined from gage heights corrected for ice effect by means of one discharge measurement, observer's notes, and weather records. Owing to unreliable or missing gage- height record discharge ascertained by comparison with flow of river at Hadley Nov. 15-21, Dec. 27 to Jan. 2, May 6-9, 12-14, 23-31, June 1-5, 21-27. 30, July 1-4, 18-31, Aug. 27 to Sept. 1, and Sept. 12-23. Braced figures show mean discharge for periods indicated.

Monthly discharge of Sacandaga River near Hope, N. Y., for the year endingSeptember 30, 1926


Month

October... ___________________November ___ ________ ... . ___ ..

January. _________ ___ ._ . ..February ______________________March _ ___ ____ ____ . __ . ..April ________________________

June __ _______ ..July.......................... .................August __________ . __ . __ _ .. ..September.. ______ . __ ...

The year.. ..............................

Discharge in seoond-feet

Maximum

4,130 8,500 8,010 1,900

550 1,100

18, 100 8,590 3,440 1,560

992 1,680

18, 100

Minimum

324 812

400 400 360 850

730

110204

110

Mean

1,030 2,470 1,570

660 452 542

4,630 2,620 1,140

466 302 507

1,360

PerSquare mile

2.09 5.00 3.18 1.34 .915

1.10 9.17 5.30 2.31 .943 .611

1.03

2.75

Run-off in inches

2.415.58 3.67 1.54 .95

1.27 10.23 6.11 2.58 1.0'J .70

1.15

37.28

HUDSON RIVER BASIN 131SACANDAGA RIVER AT HADLEY, N. Y.

LOCATION. Half a mile west of Hadley, Saratoga County, 1 mile above mouth of river, and 4J4 miles below site of proposed storage dam at Conklingville.

DRAINAGE AREA. 1,060 square miles (measured on topographic maps).RECORDS AVAILABLE. January 1, 1911, to September 30, 1926.GAGE. Friez 7-day graph water-stage recorder on left bank; inspected by

J. F. Kelly.DISCHARGE MEASUREMENTS. Made from highway bridge half a mile below gage

or by wading.CHANNEL AND CONTROL. Very rough but practically permaneitt.EXTREMES OF DISCHARGE. Maximum stage during year from water-stage

recorder, 10.6 feet at 2 p. m. April 26 (discharge, 22,500 second-feet); mini mum stage, 2.72 feet from 8 a. m. to 6 p. m. August 22 (discharge, 235 second-feet).

1911-1926: Maximum stage recorded, 12.36 feet from 11 a. m. to noon March 28, 1913 (discharge, about 35,500 second-feet); minimum stage, 2.25 feet all day September 16, 1913 (discharge, about 61 second-feet).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent except as affected by ice.

Rating curve well defined below 14,000 second-feet. Operation of water- stage recorder satisfactory. Daily discharge ascertained by applying to

Trating table mean daily gage height obtained from recorder graph by inspec tion or, for days of considerable fluctuation in stage, by averaging discharge for intervals of the day, except for periods of ice effect, for which it was ascertained as indicated in footnote to table of daily discharge. Records excellent except those for period of ice effect, which are fair.

Discharge measurements of Sacandaga River at Hadley, N. Y., during the year ending September 80, 1926

Date

Jan. 13 ____Mar. 11... _ ...

Gage height

Feet «4.70«4.11

Dis charge

Sec.-fl. 1,010

894

Date

Apr. 23.. ....

Gage height

Feet

4.14

Dis charge

Sec.-ft.

1,280

Date

July 23.........

Gage height

Feet 3.08

Dis charge

Sec.-ft. 436


Daily discharge, in second-feet, of Sacandaga River at Hadley, N. Y., for the year ending September 30, 1926

Day

1.. ........ .....2..... ..........3 4...............5...... .........

6..-. _ ..----.-7......... ...8... ............9... ............10 ...

11... ............12.... ....... ....13...............14...............15.... ...........

Oct.

816

752

1,620

1,5801,5401,3801,2701,340

1,5101,4201,3001 2301.140

Nov.

3,6603,0602,6009 ion1,890

1,7501,7202,1503,870

4,200

4,6106,7908.240

Dec.

9 dnn2,2002,2002,2002,800

5,2807,4107 QflO

7,100K RA(\

4,6704,200q Ecn

2,8702.120

Jan.

1,0001,1001,1001,1001,100

1,0001,0001,000

OKAQCft

950QKAOKAQ^n950

Feb.

1,2001,100

1,1001,000

1,0001,0001 AAA

1,000OKA

QCft

QrtA

900900900

Mar.

QKfl

950Qnn850ftcn

800800ftnnOKA

onn

Qftfl

900QAA

onn850

Apr.

9 4nno ion1 Qfill1 fiQAi SQn

1 oen

2,1202,520q 7fin

5,030

7,100ft ojn8,770c con

8.770

May

10 800

10, 00011, 100n KAn

10,8009,3108,0707 2506,500

K runK 41 n

5,0304,5503.9SO

June

1,160i 4f>n1 Qcn

1,8201,570

1 OKA

1,3101 4401^710i 7f»n

1,5701 QPtfl

1,1301,1201. 5fiO

July

1,3201,170

Q7nftnaAQQ

650

706671

O AQn

9 fiftft

2, 0401 740i! Kin

Aug.

528

oqo

1 AQA

848

63654152251547Q

Ane.QQQ

Q77q77371

Sept,

CAO

A.V7OAK^U1

6161,6409 ion1,7109 Ann

q OKA

2,520i fton1,4801.150


Daily discharge, in second-feet, of Sacandaga River at Hadley, N. Y., for the year ending September 30, 1926 Continued

Day

16... ............17........... ...18...............19..............20...............21.... . ..22.......... ...23...-24... ,. . ..25... ........26. ..27... .. .28... .......29.. -.30.. .........31 _______

Oct.

1,1001,1401,570

1,8201,890

1,5801,4402,0*04,7905,8005,9405,5405,030

Nov.

9,310

8,950

6,5005,8005,0304,2003,4502,8702,520

2,960

2,690

Dec.

1,9401,9001,7001,600

1,4001 fiftft

1,7001,5001,400

1,100i HAH

1,0001,000

Jan.

900

1,0001 900

3,0002 8002,4002,2001,800

1,400

1,3001,1001,100

Feb.

900

900

950

950900900900900GKfl

Mar.

850850800850800850900

1,0001,200

1,6001,8002,0002,2002,2002,400

Apr.

8, 9508,4207,250

5,2804,790

7,74011, 50017,00022,00019, 90016, 10013, 50011, 900

May

3,450

2,6902,4402,8703,160

2,5202,1901,9601,7501,380

988925

1,0201,060

June

4,0204,4404,0903,4502,8702,2701,8901,7501,5501,3201,090

1,8901,6201,420

July

1,160898752

567503467449431425491491461431455534

Aug.

341323305287265255240383892

1,4801,4601,090

872760622567

Sept.

970824706706720664615560554931

1,6501,7101,5701,4401,190

NOTE. Discharge Dec. 1-5 and Dec. 17 to Apr. 1 determined from gage heights corrected for ice effect by means of two discharge measurements, observer's notes, and weather records.

Monthly discharge of Sacandaga River at Hadley, N. Y., for the year endingSeptember 30, 1926


Month

October ._November. ......_.__ ..

January. _ ...... .February .___ _ _ ._ ...March

May

July .. ...


Maximum

5,940 9,670 7,900 3,000 1,200 2,400

22,000 11,500 4,440 2,690 1,480 3,250

22, 000

Minimum

736 1,720

950 900 900 800

1,890 925

1,090 425 240 341

240

Mean

2,150 4,390 2,740 1,360

964 1,130 7,770 4,980 1,920

920 600

1,200

. 2,510

Persquare mile

2.03 4.14 2.58 1.28 .909

1.07 7.33 4.70 1.81 .868 .566

1.13

2.37

*

Run-off in inches

2.34 4.62 2.97 1.48 .95

1.23 8.18 5.42 2.02 1.00 .65

1.26

32.12

BATTEN Kill AT BATTENVIIIE, N. Y.

LOCATION. 1 mile southwest of Battenville, Washington County, 3 miles belowmouth of Whitaker Brook, and 11 miles above mouth.

DRAINAGE AREA. 397 square miles (measured on topographic maps). RECORDS AVAILABLE. October 1, 1922, to September 30, 1926. GAGE. Gurley 7-day graph water-stage recorder on left bank; inspected by

employee of Blandy Paper Co. DISCHARGE MEASUREMENTS. Made from cable 400 feet below gage or by

wading. CHANNEL AND CONTROL. Solid rock ledge extends practically across channel,

overlain with some gravel on right side; practically permanent. EXTREMES OF DISCHARGE. Maximum discharge recorded, 4,820 second-feet from

10 p. m. to midnight April 25 (gage height, 7.5 feet). Minimum stage, 1.94 feet from 10 a. m. to 2 p. m. September 21 (discharge, 59 second-feet).

1922-1926: Maximum discharge recorded, about 7,350 second-feet at11 a. m. February 12, 1925 (gage height, 9.5 feet; stage-discharge relation affected by ice). Minimum stage, 1.65 feet at 6 a. m. November 19, 1924 (discharge, 40 second-feet).


ICE. Stage-discharge relation seriously affected by ice.REGULATION. Some diurnal fluctuation, due to operation of mills at Battenville

and above, is noticeable during low water.ACCURACY. Stage-discharge relation changed slightly during break-up of ice in

March; affected by ice December 24 to March 24. Rating curves fairly well denned above 100 second-feet. Operation of water-stage recorder un satisfactory at times. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of considerable fluctuation in stage, by averaging discharge for intervals of the day, except for periods of no record or of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Records good except those estimated or those for period of ice effect, which are fair.

Discharge measurements of Batten Kill at Battenville, N. Y., during the year endingSeptember 30, 1926

Date

Feb. 19.........

Gage height

Feet 4 98

«4.84"4.65

Dis charge

Sec.-ft. i son1,070

403

Date Gage height

Feet

3.74

Dis charge

Sec.-ft. 1, 760

933

Date

Aug. 6 . ------

Gage height

Feet 2.932.94

Dis- ' charge

Sec.-ft. 450.42»


Daily discharge, in second-feet, of Batten Kill at Battenville, N. Y., for the year ending September 30, 1926

Day

1--..---... -.-.2. ..3-__. _..__-_ ...4...............5

6..., , ..7... __.._ _8-....-..-.....9_-_. .-,.- . .10-

11. -.___--12.._ ., ,.13 -14_._ . -. . .15... ....... _..

16. -17_.. ..-..18. _---.__. ______19._. -._-_ ,- _20 ............

21... .. ....22...-..-.--- -23, . . .. _24-..---....- __25... ., .

26-........-..-_.27..-.---.. ._..-28---_. . .........29.. -..._. ---.--_30... .- --31.

Oct.

345340355431392

398370340340458

470442453464480

519614

194470

431623

1,180970

1,000905808

Nov.

749704650614572

8792,0201,660

1,2501,0401,2301,9801,750

2,1802,3201,880

1 °.^ft

1,000938840

ene

1 4-Qrt

970

Dec.

872

970

1,1101,000840

775775

686

566

453

840742600550

460QCfl

360QAfl

320320

Jan.

320300

300

360300260

240

260

280280

2 nnn

1,1007nn

^nn

380380400400

Feb.

480420400

OQrt

360

320

320

090

OAT)

Qrtrt

1,000

850700550

440

1 3001 4001,000

Mar.

AQf\

QCrt

400480

1 400l', 300i (\f\f\

900

700

550

500460600

QKf\

1 200i ^nn

9 ^7n

1 8001,700

1,5201,570

Apr.

1,350

1 0301,3001,520

1,4801,5709 inn

3,740

O I fcf\

2,520

9 1 7n

1 o^n1,6201,4401,310

1,270

9 QQfl

3 3204 340

2,9402 2202 220

May

1 880

9 ^9n3,270

9 *39n1 QQrt

1,750

I QQft

1,310

one

CSrt

774708650

715

c7c

548497

ACQxoi

QQQ

37n355

June

376

754

497

464

453

QQO

365335OQfl

CQC

Eqn

475

QCO

360

404

QOO

320350

July

291267

91 ̂

215277

O1Q

01 0

1,2701,030632K79

475

QQQ

315

315977

254

Of\C

267223

2031911799Q^

>1fl

Aug.

203291

1,110958682

475387419370

291

291254

24123622391Q91 1

169

1Q9

]95

215

1QK

1 on

153

Sept.

145138133128147

310-301219'203.

191167

143.

123114144134

US-199124136

445

NOTE. Discharge Dec. 24 to Mar. 24 determined from gage heights corrected for backwater from ice by means of two discharge measurements, weather records, and comparison with flow of Hoosic R ver near Eagle Bridge. Gage heights estimated because of faulty operation of water-stage recorder Dec. Wi-26, Mar ~ 3-5, 11-13, 22-27, and July 31 to Aug. 6.


Monthly discharge of Batten Kill at Battenville, N. Y., for the year endingSeptember 30, 1926


Month

November _ _ _ ...... _ _ .. .. ...

July...- ...-.......-...-..-...........,....August ______ . ____ - ......- _ _ __ _


Maximum

1,450 2,320 1,330 2,400

. 1,400 2,370 4.3403,270 1,440 1,270 ], 110

445

4,340

Minimum

340 572 320 240 240 320

1,030 355 320 179 150 113

113

Mean

569 1,200

710 505 522

1,010 2,210 1, 160

516 361 316 187

772

Per square mile

1.43 3.02 1.79 1.27 1.31 2.54 5.57 2.92 1.30 .909 .796 .471

1.94

Run-off in inches

1.65 3.37 2.06 1.46 1.36 2.93 6.21 3.37 L45 1.05 .92 .53

26.36

BOOSIC RIVER NEAR EAGIE BRIDGE, N. Y.

LOCATION. Half a mile below mouth of Walloomsac River, lj£ miles southeast of Eagle Bridge, Rensselaer County, and 22 miles above mouth.

DRAINAGE AREA. 512 square miles (measured on topographic maps).RECORDS AVAILABLE. August 13, 1910, to March 31, 1922; July 25, 1923, to

September 30, 1926.GAGE. Au 7-day graph water-stage recorder on left bank; installed August 17,

1925; inspected by J. E. Sherman.DISCHARGE MEASUREMENTS. Made from cable half a mile below gage or by

wading.CHANNEL AND CONTROL. Gravel, occasionally shifting.EXTREMES OF DISCHARGE. Maximum stage during year from water-stage

recorder, 9.5 feet at 4 p. m. November 16 (discharge, 7,350 second-feet);minimum stage, 2.05 feet at 5 p. m. September 23 (discharge, 56 second-feet).

1910-1926: Maximum stage recorded, 13.5 feet at 7.30 a. m. July 9, 1915(discharge, about 16,700 second-feet); possibly higher stages previous toAugust 17, 1914, as gage was inaccessible at extremely high water; minimumstage, 6.1 feet (old datum) at 5 p. m. September 14, 1913 (discharge, prac-

1 tically zero).ICE. Stage-discharge relation affected by ice.REGULATION. During medium and low stages there is considerable diurnal

fluctuation in flow caused by operation of power plants at and below Hoosick Falls, which is about 3/£ miles above gage, and by sawmills on Walloomsac River.

ACCURACY. Stage-discharge relation permanent except as affected by ice. Rating curve well defined. Operation of water-stage recorder very satis factory. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of considerable fluctuation in stage, by averaging discharge for intervals of the day, except for periods of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records excellent; winter records fair.


Discharge measurements of Hoosic River near Eagle Bridge, N. Y., during the year ending September SO, 1926

Date

Nov. IS....

Gage height

Feet 6.225.924.19

Dis charge

Sec.-ft. 2,4802,210

829

Date

Feb. 22 _Mar. 25 . Mar. 27. -....

Gage height

Feet

8.245.61

Dis charge

Sec.-ft. 704

5,2302,050

Date

May 14... __ .July 16 ... _

Gage height

Feet 4.162.96

Dis charge

Sec.-ft. 830232


Daily discharge, in second-feet, of Hoosic River near Eagle Bridge, N. Y., for the year ending September SO, 1926

Day

1 2-.-----.. _ ...3 4 ... ........5 ... ... .6 ... ...7 ...... ....8 ....... ....9..... .......10 11 12 13 ........14. 15 16 17 18 19 20 21 . 22 23 .24 25 ! 26 27 28 ...........29 -... ..30 31

Oct.

387341363510429401384345

546573

544543558639635695585560510

4431,0002,1501,3001,0601 060937789

Nov.

714727675618585719769

1,2402,8601,5901,2601,1001,8602,5001,8305,2803,7602,3901,9501,6801,4201,2601,2201,060891

8871,5301,020799

Dec.

782804832

1,1901,3701,8501,6401,2601,130848830852779710588590595543533485634

1,3701,010734631534460420380340320

Jan.

320320320340400500500420360320320300280280280280300800

3,8101,540960768579550480440420400380400440

Feb.

650600

500480420400400380360360360380360360360320320480

1,100850700550460440

1,8001,400800

Mar.

700600550500420420550

1,8001,6001,100850700650600550550550550550900

1,3001,8002,4002,7803,4309 Q7fl2,0001,6401,4201,5901,640

Apr.

1,3801,1801,0601,3801,4601,5401,7604,4905,7804,7904,0103,1202,7203,0003,4902,7702,6002,0401,9001,7701,7202,9505,4705,1606,1204,0702,6002,2409 CMfl

2,090

May

1,8602,0402,6002,7501,8601.5001,3801,2201,0601,0601,030

890825730700700652590676700558

552505430402418401346342

June

425706932700558470504550583521450370334402631

1,000616484425338380

331315321

326370297300

July

256225

148166212231203180175179ORQ

240279261229178123264241199173180167111169166152175208186

Aug.

144199fifiO450283

226

207187175IRQ280288327256242216195192165124

174180198244192119160157

Sept*

124

151122138591464227208184135176176

19713213696142127iqc

130160215231220192174

NOTE. Discharge Dec. 28 to Jan. 18 and Jan. 24 to Mar. 23 determined from gage heights corrected for backwater from ice by means of two discharge measurements, weather records, and comparison with flow of Batten Kill at Battenville.

Monthly discharge of Hoosic River near Eagle Bridge, N. Y., for the year ending- September SO, 1926


Month

November, __________________ ..

April .... ....

July .


Maximum

2,150 5,280 1,850 3,810 1,800 3,430 6,120 2,750 1,000

279 662 591

6,120

Minimum

341 585 320 280 320 420

1,060 342 250 111 119 95

95

Mean

649 1,500

808 574 576

1,210 2,900

979 475 198 224 185

855

Per square mile

1.27 2.93 1.58 1.12 1.12 2.36 5.66 1.91 .928 .387 .438 .361

1.67

Run-off in inches

1.46 3.27 1.82 1.29 1.17 2.72 6.32 2.20 1.04 .45- .50 .40

22.64


MOHAWK RIVER AT VISCHER FERRY DAM, N. Y.

LOCATION. At Vischer Ferry Dam of Barge Canal (Lock No. 7), 1 mile above Stony Creek and Vischer Ferry, 7 miles below Schenectady, Schenectady County, and 11 miles above mouth.

DRAINAGE AREA. 3,430 square miles (measured on topographic maps).RECORDS AVAILABLE. Discharge June 24, 1913, to September 30, 1919; water-

surface elevations only, October 1, 1919, to January 31, 1926.GAGE. Stevens continuous water-stage recorder (showing head on crest of

spillway) in the southerly corner of the basin near upper end of Barge Canal lock. Staff gage in masonry of outer lock wall just above upper gates. Datum of staff gage 12.1 feet lower than that of recorder. Recorder inspected and staff gage read by J. J. Hannan, lock tender.

CHANNEL AND CONTROL. Control is crest of spillway.EXTREMES OF STAGE. Maximum stage during period from water-stage recorder^

3.0 feet at 9.30 a. m. November 14; minimum stage, 0.24 foot at 5 p. m. January 29.

1913-1926: Maximum stage recorded, 7.6 feet just before noon March 28, 1914, determined by leveling from floodmarks. This stage lasted but a few moments and was caused by the breaking of an ice jam near Schenectady. Minimum stage occurred during periods when the flood gates were opened and water drawn below crest of spillway.

EXTREMES OF DISCHARGE. 1913-1919: Maximum discharge, about 140,000 second-feet just before noon March 28, 1914 (estimated by engineers of the Department of State Engineer and Surveyor. Minimum discharge, about 290 second-feet from 4 a. m. to 5 a. m. and 4 p. m. to 6 p. m. October 31, 1914.

REGULATION. Considerable diurnal fluctuation is caused by operation of Lock No. 7, State power plant, flood gates in dam, and movable dams upstream. Seasonal regulation affected by operation of Hinckley and Delta Reservoirs.

DIVERSIONS. Barge Canal Lock No. 7 at the south end of dam was put in operation May 15, 1915. Discharge records included flow over the spillway and through lock and water wheels of lock power plant. State-owned power plant at north end of dam was put in operation January 29, 1926.

ACCURACY. From October 1, 1919, to January 31, 1926, water-surface eleva tions only have been published for this station, but should the occasion arise, conditions at the station were such that a discharge record could be computed. However, when operation of the State-owned power plant began on January 29, 1926, conditions at the station were so changed that the determination of discharge became practically impossible and the value of the gage-height record thereby greatly reduced. Hence, although the station was continued in operation after January 31, 1926, at the request of the State engineer, nothing is published after that date.


Daily gage height, in feet, of Mohawk River at Vischer Ferry Dam, N. Y., for the year ending September 80, 1926

Day

12 __ . .3. ........ ......4_ ...

6-....

9...-. . .. .. . 10

11 ..12. ........ ......13.. .................14..... ..15...................

Oct.

0.60.54.62.90.94

.65

.71 69

.68

.79

.71

.66

.68

.66

.67

Nov.

0.92.80.89.85.78

.98

.90 1 251.84 1.62

1.131.121.952.852.75

Dec.

0.85.91.86

1.001.36

2.35 2.21 7^

1 52 1.16

1 08.98

1.411.191.05

Jan.

0.71.68.68.67

.62

.69

.71

.70

.63

.62

.68

.71

.68

.73

Day

1617--.--.---.-.-.--..IS....... . . ...19-.-- .-.....

21 - - 22-..-.... . 23__. _ .__ ....24- . 25--..-.--.......-.

26.- -

28- 29. ... Of)

31-. ... ......

Oct.

0.68.89.73.83.82

.74

.85

.81

.78 1.43

2.2

1.481.281.031.03

Nov.

2.82.41.861.511.39

].15 1.07 1.01.93 .86

.72

1.921.351.09

Dec.

1.10.82

757673

73 89 998678

666353606875

Jan.

0.77.70.66.91

1.59

1.53 1.34 1.13.92.81

.83

.82

.71

.32

.27

.26

MOHAWK RIVER AT COHOES, N. Y.

LOCATION. 50 feet below School Street power plant of Cohoes Power & Light Corporation at Cohoes, Albany County, 500 feet below Cohoes Falls, and \% miles below Crescent Dam.

DRAINAGE AREA. 3,500 square miles (from annual report of New York State engineer and surveyor).

RECORDS AVAILABLE. October 20, 1925, to September 30, 1926, at present location. From December 1, 1917, to July 16, 1925, records were obtained at Crescent Dam, \% miles upstream. Flow at Cohoes is the flow at Cres cent Dam less the amount diverted for lockages and other canal purposes at Lock No. 6 (Crescent Dam) on Barge Canal. A table giving daily .amount of diversion at Lock No. 6 is published below. City of Cohoes diverts a small amount of water from the fore bay of the School Street plant for domestic supply. This diversion is negligible and may be dis regarded in comparative computations. For the period July 17 to October 19, 1925, records of discharge were determined from gage heights above Cohoes Power & Light Corporation Dam and from operating records at School Street power plant. These records are directly comparable with records from present station. See under "Diversions."

GAGE. Au continuous water-stage recorder at end of concrete tailrace guard wall near right bank; inspected by superintendent of power plant.

DISCHARGE MEASUREMENTS. Made from upstream side of highway bridge half a mile below gage or, for low stages, from footbridge across power- plant canal a quarter of a mile above gage.

CHANNEL AND CONTROL. Solid rock; probably permanent.EXTREMES OF DISCHARGE. Maximum stage during period of record, from

water-stage recorder, 16.6 feet above 6 a. m. April 10, 1926 (discharge, about 52,600 second-feet); minimum stage, 3.97 feet at 7.15 a. m. September 19, 1926 (discharge, 31 second-feet; caused by regulation).

ICE. Stage-discharge relation probably not affected by ice.REGULATION. Seasonal regulation from storage reservoirs at Delta on upper

Mohawk River and at Hinckley on West Canada Creek. Dams at locks on the canalized Mohawk River operate to flatten out flood flows. Large diurnal regulation from operation of School Street power plant.


DIVERSIONS. Water is diverted at Crescent Dam through Lock No. 6 for use in Barge Canal which leaves the river at this point. New York City Board of Water Supply diverts water from Schoharie Creek, a tributary of Mohawk River, for municipal use. City of Cohoes diverts its water supply just above the School Street plant and there is also a small diversion at this point for industrial use, most of which returns to the river above the measur ing section, and is thus included in the record.

To partly offset these diversions a considerable amount of water is received into Delta Reservoir from Black River Basin, through the Black River Canal (flowing south) and Lansing Kill. A small amount of water is also received through feeders from the upper Chenango Basin. Small amounts of water may also be received, during the navigation season, from the Oswego Basin through the summit level of Barge Canal, although it is possible that the amount of water thus gained from Oswego Basin is about the same amount lost from the Mohawk.

ACCURACY. Stage-discharge relation permanent during period of record. Rat ing curve well defined between 400 and 35,000 second-feet; extended beyond these limits. Operation of water-stage recorder unsatisfactory at times. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of consider able fluctuation in stage, by averaging discharge for intervals of the day, except as indicated in footnote to table of daily discharge. Records excel lent for periods during which recorder operated satisfactorily, except for extremely low stages; good for other periods.

Discharge measurements of Mohawk River at Cohoes, N. Y., during the years ending September 30, 1925 and 1926

Date

1925

July 6- ......Nov. 23. _Nov. 28. _

Gage height

Feet 8.799.53

10.429.50

11.0713.48

Dis charge

Sec.-ft. 1 3002,3804,6809 94ft

6,89021,800

Date

1926

Mar. 26.-- Apr. 2..........

Apr. 20 ......Apr. 26

Gage height

Feet 12.6814.4712.0711.7012.4011.9114.399.42

Dis charge

Sec.-ft. 15,80030,80012,1009,380

14,20011,10030,2002,210

Date

1926

July 24

Do.... ..Do.........

Do.........

Gage height

Feet 10.058.547.987.487.626.637.02

Dis charge

Sec.-ft. 3,5201,12ft

910706794464599-

Daily discharge, in second-feet, of Mohawk River at Cohoes, N. Y., for the year; ending September 80, 1925 and 1926

Day

1925 1 2 _ ......3 4.........5. _ -

6 ...7 ..8 9 _ ......10

July Aug.

3,4302,4402,7302,6802,090

1,9902,3902,1002,0806,990

Sept.

1,0601,0401,5701,4301,680

1,3201,8901,9002,5802,250

Day

1925 11... _ ...12 ...13 .14 15 ..

16 17 18 19Oft

July

4,6904,3101,4202,420

Aug.

5,750

3,4405,1806,530

2,8703,210

2,4202,770

Sept.

1,8501,8203,0908,7406,380

4,8504,3804,2603,570

Day

1925 21.........22. 23 24 __ .....25.^.-..

26. -27 28 29 30 31

July

1,4103,250

13,5009,5606,510

3,9406,5408,0406,3307,0204,200

Aug.

2,6102,2801,5701,7202,000

2,0801,9801,8301,290

523870

Sept

2,7502,010-1,6002,29&2,610"

2,120-919-

1,890-3,000-3,250-

HUDSON EIVER BASIN 139

Daily discharge, in second-feet, of Mohawk River at Cohoes, N. Y., for the years ending September 30, 1925 and 1926 Continued

Day

1925-26 1.. ... .2...............3.... .... 4...............5...............

6.. ...-.. .7 ...S.... ...........9...............

10 ....... __ -

11. 12.... ....... .IS...............14.. ...... _ ....15...............

16...............17 ............18 19 20

21.... ...........22..............23........ ......24......... ...25..... ..........

26...............27........ .......28... .... ........29......... ......30 31....... ......

Oct.

2,3701,9002,4604,2504,740

4,4902,8202,8602,9502,880

3,2903,3202,8002,8402,740

2,6403,0001,9703,4704,150

2 8803,8603,7203,420

10,700

24,30013,500XI, 5009,1606,6206,070

.Nov.

5,2804,0104,8504,6904,210

4,5405,4106,860

16,40013,800

8,5407,110

14,90033,00033, 100

31,80027,70017,70019 Rftft10,700

8,2807,0406,5906 (\Af\

5,520

i 7on4,620

17,40011,4007,510

Dec.

4,4305,3505,0305,140

10,200

23,20023,20016,60012,5008,850

6,5306,350

11,1005,5105,840

6,3404,4203,8003,6703,390

3,6104,7006,1504 8404^110

3,7002,3701,3804,1902,6103,310

Jan.

3,2603,1803,1403,1403,240

3,4603,9104,5004,3602,940

£,8002,9103,7002,930o 940

3,200

2,6004,130

12,200

10,2007,7205,5704,230

1 44(1

4,2804,3304,3703,5903,790

Feb.

3,7503,1103,1003,8103,690

3,9203,7503,8303,3203,420

3,6203,6603,4303,1603,540

3,4703,0703,030S OKft

3,270

2,7103,6103,1203,5103,390

3,3803,5804,630

Mar.

5,0504,4804,6804,8204,600

3,9903,4003,6203,5905,030

4,9104,2103,5803,370

2,7102,9102,9003,0103,370

3,4606,2209,780

16,00024 800

29,30024,80018,40014 400

14,600

Apr.

13,60012,00010, 8009,640

10,600

13,10015,20022,50045,00048,600

41,60033 10025' 80025,600oa am

23,00017,80014,60012,00011,000

10,00012,60022,40024,80033,500

33,50027,80021,20017,40015,300

May

13,20012,30011,70018,80018,400-

12,4006,0208,5508,7607,800

7,6407 1KA

5,6705,5805,120

4,8003,5103,5503,5203,600

3,6003,7603,7403,6402,310

2,6303,0102,7002,2301,3001,280

June

2,2604,4404,1603,7503,230

2,3202,4602,8003,4003,220

3,2602,7101,1202,0402,870

8,0105,160A -\Af\

3,010

2,8202,5002,6402,4002,000

1,8601,7504,3903,4204,440

July

3,2002,5002,5901,6701,610

1,6301,7501,4001,7902,040

4,5403,8903,5802,9302,930

2,3401,6201,3801,7601,900

1,6601,7501,6901,400

839

1,4601,4501,1101,5602,4601,880

Aug.

1,3901,7801,9501,7201,730

1,7801,4901,3602,4102,010

1,9001,5601,8202,1001,210

1,7101,6901,5601,4801,800

1,540824

1,5602,7103,370

3,6102,2501,7101,4101,5601,630

Sept.

1,5301,5501,6401,3401,060

2,5505,4504,5203,290

13,600

6,6302,2502,5602,1702,310

2,8002,6202,4301,2502,200

1,9501,6202,4802,7407,400

6,8204,7003,2803,1803,300

NOTE. Daily discharge prior to Oct. 20 and for the following periods, when recorder did not operate, ascertained from gage heights a"bove Cohoes Power & Light Corporation Dam and from operating records at the School Street power plant: Oct. 20-30, Dec. 26 to Feb. 4, Feb. 23-24, Mar. 28-30, Apr. 7-10, May 11-13, 16-18, 23-25, June 16-23, July 13-15, Sept. 1-3 and 10-13.

. Daily diversion, in second-feet, from Mohawk River through Barge Canal at Lock No. 6, at Crescent Dam, N. Y., for the year ending September SO, 1925 and 1926

Day

1925 I...., .2 3 4 _ . __ .5 .

6 .7 -8 9 ..10

July Aug.

13089

12484

107

8995

101101118

Sept.

8910110710778

8411311349

130

Day

1925 11 12.........13 14 15 . ..

16 17 18 ..19.........20.... _ ..

July

1077895

124

Aug.

78107789560

7260

10195SQ

Sept.

117Q4fifl

11372

11810?607289

Day

1925 21 .22. .23 .24. 25- _____

26 27 28 29 30.... ___11

July

9478

10278

101

1011071308489

101

Aug.

1181131067266

7884

10088

10084

Sept.

49101

7289

107

1005495

101101

63435 30 10


Daily diversion, in second-feet, from Mohawk River through Barge Canal at Lock No. 6, at Crescent^Dam, N. Y.,for the year ending September 30, 1925 and 1926 Continued

Day

1925-26 1 _ .. _ .......2...............3 4...............5... ............

67...............8_. _ ..........9.. ........... -10.

11 .12...............13 .-.----. ...14...............15.. ............

16 17 18..... .. ........19 20... ............

21 22. 23.... ... -24.... ...........25 . ....... ...

26 27 28 29 30 31

Oct.

10171848984

107113898466

541186611889

101721137237

2641301189570

29532976105105

Nov.

1011187.27884

8995898561

102118906738

3867858489

956784118101

6095617884

Dec.

1016695177200

7355856066

7249

( ^

Jan.

6

Feb.

6

Mar.

6

Apr.

> * 6

146181266

693122318

May

1849605043

44608489POt

142107141129112

1238310012388

53112657188

778377777178

June

711186689117

54711127854

779411210066

8995101107118

95101777183

885966113118

July

1171131658377

1001128813571

8911889117118

14171135142141

12994129100112

1171128313583129

Aug.

717711213571

598894101100

112 1291068383

9453946594

1121061179566

1171129410688100

Sept.

941231007771

1011017812495

841529477141

72958310184

1015910111272

1077211811284

NOTE. Above amounts of daily diversion determined from record of number of lockages and from record of opening of valve in by-pass around Lock No. 6, as furnished by the chief operator of Barge Canal.

Monthly discharge of Mohawk River at Cohoes, N. Y., for the years ending Sept. 30,1925 and 1926



Month

1925 July 17-31.

1925-26

April. . _May ______ ,- _ _ . ____ . __ . _ _ _ ..June _______ - ___ ______ _.___- .....July.......

The year. ......... ... ...............

Maximum

13,5006,9908,740

13,500

24, 30033, 10023,20012, 6004,630

29, 30048, 60018, 8008,0104,5403,610

13, 600

48,600

Minimum

1,410523919

523

1,9003,7901,3802,6002,7102,7109,6401,2801,120

839824

1,060

824

Mean

5,5402,8002,670

3,290

5,09011,5006, 8504,4903,4708,220

21,8006,4003,2802,0701,8303,370

6,520

Persquare

mile

1.58.800.763

.940

1.453.291.961.28.991

2.356.231.83.937.591.523.963

1.86

Run-off in inches

0.88.92.85

2.65

1 673.672.261.481.03

6.952 111.05.68.60

1.07

25.28

NOTE. See under "Regulation" and "Diversions" in the station description.

HUDSON RIVER BASIN

WEST CANADA CREEK AT HINCKLEY, N. Y.

141

LOCATION. 1 mile below Hinckley Dam at Hinckley, Oneida County, \% miles above Prospect, and 4 miles above Trenton Falls.

DRAINAGE AREA. 373 square miles (measured on topographic maps).RECORDS AVAILABLE. June 14, 1919, to September 30, 1926.G\GE. Gurley 7-day graph water-stage recorder on right bank; inspected by

Charles D. Cady.DISCHARGE MEASUREMENTS. Made from cable 1,000 feet above gage.CHANNEL AND CONTROL. Large boulders on solid rock bottom^ practically

permanent.EXTREMES OF DISCHARGE. Maximum stage during year from water-stage

recorder, 8.2 feet at 1 p. m. April 26 (discharge, 8,550 second-feet); minimum stage, 3.31 feet at 5 a. m. September 5 (discharge, 197 second-feet).

1919-1926: Maximum stage recorded, 8.93 feet at 2 p. m. April 12, 1922 (discharge, 10,800 second-feet); minimum stage, 2.50 feet from 1 to 4 p. m. August 31, 1924 (discharge, practically zero) caused by closing of gates in dam.

ICE. Stage-discharge relation not affected by ice.REGULATION. Seasonal flow regulated by storage in Hinckley Reservoir, Con

solidated Water Co.'s reservoir on Black Creek at Gray, and several small lakes.

ACCURACY. Stage-discharge relation permanent. Rating curve well defined above 100 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of gage-height graph or for days of consid erable fluctuation by averaging discharge for intervals of day. Records excellent.

The following discharge measurements were made: March 5, 1926: Gage height, 4.31 feet; discharge, 762 second-feet. May 17, 1926: Gage height, 5.18 feet; discharge, 1,840 second-feet. July 9, 1926: Gage height, 4.06 feet; discharge, 584 second-feet.

Daily discharge, in second-feet, of West Canada Creek at Hinckley, N. Y., for the year ending September 30, 1926

Day

1 2 3- -

5

89- -----------10

11.-.---.--.-,

13-.,

15-

16_

18 - 19-----.- -.50-- ...

Oct.

749749767776785

785842910910930

930930930930930

930940940940940

Nov.

1,090991980970960

960970

1,0903,2603,160

2,2801,7402,2305,6805,860

4,4803,4502,5301,9601.600

Dec.

1,1901,0901,0501,0501,280

3,3404,3803,1602,2001,570

1,2501,1701,1001,0701,060

1,0601,0401,0201,0201.020

Jan.

9801,0201,0801,0701,070

1,0701,0601,0601,0501,040

1,0101,000980980970

970970980980980

Feb.

980970970960950

950950950940940

940930920900890

910930930920920

Mar.

861852842832814

804794785785776

749713704

687

679671663655655

Apr.

842920940930900

870852852930

1,060

1,1401,2001,2601,3101,340

1,380

1,3801,3801.310

May

2,7903,6106,2507,4205,460

4,4804,2704,7004,3803,550

3,0602,7902,700

2,440

2,2001,8901,6701,5201.400

June

722615731785785

713655631776880

823758663615930

3,0002,5801,7801,4301.140

July

758639615615601

594594587587594

6621,1001,090890722

623601601601601

Aug.

615608608608601

594608608601594

601594594601608

608601601594587

Sept.

601594594601375

608615608608608

615615615615608

683767776776767


Daily discharge, in second-feet, of West Canada Creek at Hinekley, N. Y., for the year ending September 30, 1926 Continued

Day

21 22 23 24 25 26 27 . 28 . 29 30 31 ..

Oct.

940940950950970

1,0402,1002,1201,8201,4601,230

Nov.

1,4701,3301,2101,1101,0601,0501,0501,2801,6001,360

Dec.

1,0201,0201,0201,0101,0101,0101,000

991980980980

Jan.

9911,0001,0101,010i fwini nnn1,000

991980980980

Feb.

910900890880880880870861

Mar.

647671794794804814832842823823814

Apr.

1,1601,1701,2801,4602,6707,9405,9503,9603,2502,970

May

1,4701,3801,2301,100

970861794776776776767

June

880875740704655687988

1,200980861

July

615623631623615615615615615615615

Aug.

587601594594601608608608608608608

Sept.

758758

749767767776785776776785

NOTE. Discharge estimated Jan. 2 and Feb. 23 and 24; gage-height record incomplete.

Monthly discharge of West Canada Creek at Hinekley, N. Y., for the year endingSeptember 30, 1926


Month

April

July,-. .. ... ..........

September.. ... .... _____ - .....The year . . ... .. _ ..


Maximum

2,120 5,860 4,380 1,080

980 861

7,940 7,420 3,000 1,100

615 785

7.940

Minimum

749 960 980 970 861 647 842 767 615 587 587 375375

Mean

1,030 1,960 1,360 1,010

922 764

1,800 2,580

983 660 602 678

1.200

Persquare mile

2.76 5.25 3.65 2.71 2.47 2.05 4.83 6.92 2.64 1.77 1.61 1.823.22

Run-off in inches

3.18 5.86 4.21 3.12 2.57 2.36 5.39 7.98 2.94 2.04 1.86 2.03

43.54

NOTE. Elevation of water surface in Hinekley Reservoir at end of year was 5.5 feet higher than at be-

finning of year, corresponding to a gain in storage of 548 million cubic feet. This is equivalent to a flow of 7.4 second-feet, 0.05 second-foot per square mile, or 0.64 inch on drainage area.

WEST CANADA CBEEK AT EAST BRIDGE, N. Y.

LOCATION. 500 feet below highway bridge in Kast Bridge, Herkimer County, and 4 miles above mouth at Herkimer.

DRAINAGE AREA. 575 square miles (from report of State engineer and surveyor).RECORDS AVAILABLE. May 15, 1905, to December 31, 1910; January 1, 1912,

to December 31, 1913; and October 1, 1920, to September 30, 1926.GAGE. Gurley 7-day graph water-stage recorder on left bank; inspected by

engineers of the Department of State engineer and surveyor.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Small boulders and coarse gravel; shifting occasionally.EXTREMES OP DISCHARGE. Maximum stage during year from water-stage

recorder, 5.8 feet from noon to 6 p. m. April 26 (discharge, 9,980 second- feet); minimum stage, 1.65 feet at 6 p. m. September 1 (discharge, 420 second-feet).

1920-1926: Maximum stage recorded, 7.30 feet at 11 a. m. June 21, 1922 (discharge, about 16,500 second-feet); minimum stage, 0.95 foot at 8 a. m. October 27, 1924 (discharge, about 50 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Seasonal flow regulated by storage in Hinekley Reservoir, Consoli

dated Water Co.'s reservoir on Black Creek at Gray, and several small lakes. Diurnal flow affected by operation of mills and power plant? upstream.


DIVERSIONS. Consolidated Water Co. of Utica diverts water supply for Utica from Hinekley Reservoir. Water is diverted below Trenton Falls power plant during the navigation season through Ninemile feeder and Ninemile Creek into Barge Canal. A continuous record of the amount of diversion through Ninemile feeder from West Canada Creek at Trenton Falls d«rmg the navigation season is published as a separate station, "Ninemile feeder near Holland Patent, N. Y."

ACCURACY. Stage-discharge relation changed slightly by flood of April 8; slightly affected by ice December 15 to March 23. Rating curve used prior to April 9 well defined between 200 and 5,000 second-feet; curve used sub sequently well defined between 200 and 8,000 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by apply ing to rating table mean daily gage height obtained from recorder graph by inspection or, for days of considerable fluctuation in stage, by averaging dis charge for intervals of the day. Records excellent except those for periods of ice effect and those estimated, which are fair.

Discharge measurements of West Canada Creek at Kast Bridge, N. Y., during the year ending September 30, 1926

Date

Dec. 3..... _ ..Jan. 31.........Mar. 6.. .....May3..........

Gage height

Feet 2.54

"2.72-2.23

5.17

Dis charge

Sec.-ft. 1,3601,350

7937,680

Date

May 17.... ..

Gage height

Feet 4.473.473.082.25

Dis charge

Sec.-ft. 5,5202,8909 A^lft

992

Date

June 21 _____July 8.. ........

Gage height

Feet 2.531,941.73

Dis charge

Sec.-ft. 1,420

680486


Daily discharge, in second-feet, of West Canada Creek at Kast Bridge, N. Y., for the year ending September 80, 1926

Day

I...............2...............3........ .4...............5...............^.... ...........

8........ .......9............ ..

10... ............11... ............12....... _ .. .13... ............14...............15.. .........16...............17............. .18... ............19 ............20...............21...............22...............23...............24........... .25...............26 . _._-27....... ........28. ...........29. ...........30 ...........31...............

Oct.

771762

1,8301,140

9241,0401,0001,0701,1401,2701,1101,1501,0101,0301,2801,0601,2901,2501,1901,3201,3601,2901,2901,2303,0902,5502,1302,5802,2301,8701,600

Nov.

1,3601,2801,2501,1901,2001,5201,3202,7503,3103,6702,7702,2304,3707,8907,0205,5604,0803,1602,4902,1401,9301,7001,6001,4301,3301,2802,5902,5302,0001,740

Dec.

1,5201,4201,4301,8602,1804,2305,2003,8902,7701,9601,6401,5401,4501,3201,3001,2001,2001,2001,2001,2001,3001,4001,3001,3001,2001,2001,2001,1001,1001,1001,100

Jan.

1,1001,2001,3001,3001,4001,6001,4001,3001,2001,2001,2001,1001,1001,1001,1001,1001,3001,6003,0002,0001,7001,4001,3001,2001,2001,2001,1001,1001,1001,2001.300

Feb.

1,3001,2001,2001,2001,2001,1001,1001,1001,1001,1001,0001,0001,1001,1001,1001,1001,1001,1001 2001,2001,1001,1001,0001,0001,0001,1001,1001,000.

Mar.

1,1001,0001,000

950900900900

1,0001,000

950900850850800850850850850800900950

1,2001,7002,0901,9001,9501,7001,5201,4501,5401,690

Apr.

1,4901,4001,3401,3401,4601,4201,7003,4804,5804,0103,7202,7402,7403,4805,0202,8402,1102,0202,1502,1902,6903,7103,3802,9504,9409,2907,4005,1604,3503,720

May

3,4804,0506,9208,5906,5805,1604,6105,1605,0204,3503,7203,3703,0403,0402,8402,5602,2001,9701,8502,0201,6901,6801,5701,4101,2301,0901,010

971961912

1,040

June

1,0801,090

920989

1,030921858924

1,0101,1501,030

879847777

1,4502,2303,2602,5602,2001,5701,2601,000

907874841

1,2301,5401,3801,3001,490

July

934865789709699786744680700

1,2701,2701,2201,3401,160

917793742725717697694711700675667608619636914723682

Aug.

650664677696637631

1,1301,010

747676648670683676681593616608589587586669

1,2901,3301,100

825702719663613616

Sept.

616598580608806

1,5001,140

8362,4901,490

912860812787786754942932907904866883

1,0802,2802,3601,6301,1501,1901,1201,030

NOTE. Stage-discharge relation affected by ice Dec. 15 to Mar. 23; discharge ascertained from gage height corrected for ice effect by means of two discharge measurements, study of gage-height graph, and weather records and by comparison with record at Hinekley. Gage-height graph estimated by compari son with Hinekley graph Dec. 9-11, Apr. 12-17, and June 16-21; recorder not operating satisfactorily.


Monthly discharge of West Canada Creek at Kast Bridge, N. Y., for the year ending- September 30, 1926


Month

February _ ....... .. . .

July...........................................


Maximum

3,090 7,890 5,200 3,000 1,300 2,090 9,290 8,590 3,260 1,340 1,330 2,490

9,290

Minimum

762 1,190 1,100 1,100 1,000

800 1,340

912 841 608 586 580

Mean

1,430 2,620 1,710 1,340 1,110 1,160 3,290 3,040 1,290

819 741

1,090

580 1, 630

Per square mile

2.45 4.56 2.97 2.33 1.93 2.02 5.72 5.29 2.24 1.42 1.29 1.90

2.83

Run-off in inches

2.82- 5.09' 3.42 2.691 2.01 2.33 6.38 6.10- 2.50 1.64 1.49 2.12

38. 59'

NOTE. The monthly discharge in second-feet per square mile and run-off in inches shown by the table- do not represent the natural flow from the basin because of artificial storage, mainly in Hinckley Reservoir. The yearly discharge and run-off doubtless represent very nearly the natural flow, except for the diver sion out of the basin, during the navigation season, through the Ninemile feeder and Nine mile Creek into Barge Canal.

NINEMIIE FEEDER NEAR HOIIAND PATENT, N. Y.

LOCATION. At mouth of Ninemile feeder, half a mile below highway bridge near farm of P. A. Wade, 4 miles east of Holland Patent, Oneida County, 4 miles south and 1 mile west of Barneveld.

RECORDS AVAILABLE. June 5, 1919, to September 30, 1926. Operation of sta tion was assumed by department of State engineer and surveyor July 1, 1921.

GAGE. Gurley 7-day graph water-stage recorder on right bank; inspected by D. G. Humphrey.

DISCHARGE MEASUREMENTS. Made from highway bridge half a mile above gage or by wading.

CONTROL. Suppressed weir of concrete with a lip about 1.5 feet high and a spillway inclined about 1:2; permanent.

REGULATION. Flow in feeder regulated by gates at intake just below power plant at Trenton Falls.

ACCURACY. Stage-discharge relation practically permanent. Rating curve well defined between 10 and 200 second-feet. Operation of water-stage recorder satisfactory, except as indicated in footnote to daily-discharge table. Daily discharge ascertained by applying to rating table mean daily gage height determined by inspection of gage-height graph or, for days of considerate fluctuation in stage, by averaging discharge for intervals of day. Records excellent.

The following discharge measurements were made: November 6, 1925: Gage height, 0.49 foot; discharge. 12.9 second-feet. August 6, 1926: Gage height, 1.61 feet; discharge, 88.2 second-feet. September 5, 1926: Gage height, 1.72 feet; discharge, 96.3 second-feet.


Daily discharge, in second-feet, of Ninemile feeder near Holland Patent, N. Y., for the year ending September 80, 1926

Day

I---...-. .... ...2.. ............... ..3. .............. ....4.... ........... ...5. -.--.-...........6--..--.. _ .7 .8.. .................9................. .10-- 11--..-... ..-12... ............ ....13-....... ........14..... ..............15. .......

Oct.

101102114104

, 85

July Aug.

898989898989939089899090898989

Sept.

97979797

1065722

Day

17-. 18 . ... - 19-.... . 20-...-... .-.

23.-. .

25.- 26.- 27OQ

9Q

31..--

Oct. July

32626315870888989928989

Aug.

8989899090'9092956915399797979797

Sept.

. . .

NOTE. Mean daily gage height estimated July 21, 22, Aug. 11, 13, 14, 16, 19, 20, 23, and 31; water-stage recorder not operating properly. No flow during year except on days for which discharge is given in above

k table.

Monthly discharge of Ninemile feeder near Holland Patent, N. Y., for the year ending September 30, 1926

Month

July 21-31


Maxi mum

114 92

Mini mum

85 3

Mean

101 62.5

Month


Maxi mum

97 97

Mini mum

15 6

Mean

86.3 58.3

FOX CREEK AT WEST BERNE, N. Y.

LOCATION. 500 feet above highway bridge in West Berne, Albany County, and 1 mile below mouth of Switz Kill.

DRAINAGE AREA. 66 square miles (measured on topographic maps).RECORDS AVAILABLE. August 26, 1924, to September 30, 1926.GAGE. Staff in two sections on right bank, the lower inclined, the upper vertical;

read by I. B. Schoonmaker.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Control is solid ledge; permanent. Bed covered with

small boulders. During summer there is considerable weed growth in channel.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 5.3 feet at 6 p. m. April 9 (discharge, 1,900 second-feet); minimum stage, 1.40 feet several times August 31 to September 4 (discharge, 0.9 second-foot).

1924-1926: Maximum stage recorded, 6.6 feet during night of February 11, 1925 (discharge, about 3,160 second-feet); minimum stage recorded during period of August 31 to September 4, 1926.

ICE. Stage-discharge relation slightly affected by ice.ACCURACY. Stage-discharge relation permanent except as affected by ice. Rat

ing curve well defined between 1.5 and 1,500 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing gage-height graph on basis of the two daily gage readings and averaging discharge for intervals of the day, except for periods of ice effect, for which it was ascertained as indicated in footnote to table of daily dis charge. Records good except those for periods of ice effect, which are of uncertain accuracy.


Discharge measurements of Fox Creek at West Berne, N. Y., during the year endingSeptember SO, 1926

Date

Apr. 14

Gage height

Feet 4.44'

Dis charge

Sec.-ft 1,090

498

Date

July 13

Gage height

Feet 1.881.54

Dis charge

Sec.-ft. 29.64.64

Date .

Aug. 26 .

Gage height

Feet 1.461.54

Dis charge

Sec.-ft. 1.953.77

Daily discharge, in second-feet, of Fox Creek at West Berne, N. Y.,for the year endingSeptember SO, 1926

Day

1 ... -2.. ...... ....3 _ . -. . 4. ____ . .5 ... ... ...

6 ..... ..... ..7... ....... ..8... ...... ... .9...............10. ...........

11 .. . .12 13 14...............15...............

16 ............17...... .....18.., ......19...............20...............

21 _ ............22...............23...............24.. ...... .......25 _ ....... .. .

26... .......27. 28 ............29...... .........30.... ..31 ...

Oct.

8.69 29.88.69.2

9.28.68.69.210

1214141416

1616141213

11111214 .

201

3272161721449673

Nov.

6456495152

5454

216186

76687525265

802342200159141

1271131028878

6464666660

Dec.

525462122159

AA(\

ncc940

200109

7q

646971

4959353554

71104905451

464535282017

Jan.

171Q

192021

20on

20191ft

1716151514

1314

412265

1 KQ

1361047346

383634323642

Feb.

4038383838

4446444040

3836383836

3434343230

3030302834

557080

Mar.

75655550 46

5585120110110

9075707065

65657075100

150220320500

1,100

1,250525322231342265

Apr.

231231200265302

363517

1,2101,6501,180

815475525525428

322322302231302

384525630602782

428406363216200

May

186172136127122

10092848076

7366595649

4640353838

3532282523

191616161416

June

2180885243

3835353025

2319121223

32251916

, 11

9.89.89.88.68 6

7 67.67.66.66.6

July

6.66.65.74.24 2

3 53.53.52.92.9

2.92.93.54.23.5

3.53.52.41.61.6

1.61.61.21.21 2

1 21.22.02.42.92.9

Aug.

2.93.53.52.92 9

2 93.53.52.92.9

2.92.93.53.52.9

2.41.61.61.61.6

1.61.61.61 61 6

2.03.52.92.01.6.9

Sept.

1.21.21.2.93 5

9.87.68.68.67.6

6.65.74.94.94.2

3.52.92.42.42.9

3.54.24.24 94 9

3.52.93.54.24.9

NOTE. Discharge Jan. 10-15 and Jan. 26 to Mar. 25 determined from gage heights corrected for ice effect by means of observer's notes and study of weather records.

Monthly discharge of Fox Creek at West Berne, N. Y., for the year endingSeptember 30, 1926


Month

November ________________ , .......

January.. _____________________

March ____ . _ . ............................

May .... _ ..... ............................

July...


Maximum

327 802 440 412

80 1,250 1,650

186 88 6.6 3.5 9.8

1,650

Minimum

8.6 49 17 13 28 46

200 14 6.6 1.2 .9 .9

.9

Mean

48.7 167 91.9 55.8 39.8

217 498 61.8 24.1 2.99 2.48 4.38

101

Persquare mile

0.738 2.53 1.39 .845 .603

3.29 7.55 .936 .365 .045 .038 .066

1.53

Kun-off in inches

0.85 2.82 1.60 .97 .63

3.79 8.42 1.08 .41 .05 .04 .07

20.73

HUDSON RIVEB BASIN 147

POESTEW Kill NEAR TROY, N. Y.

LOCATION. 500 feet below steel highway bridge on Troy-Eagle Mills road, 1}£ miles west of Eagle Mills, 3 miles east of Troy, Rensselaer County, and 4}£ miles below mouth of Quaken Kill.

DRAINAGE AREA. 88 square miles (measured on topographic maps).RECORDS AVAILABLE. July 15, 1923, to September 30, 1926.GAGE. Au 60-day fuzee water-stage recorder on left bank installed June 4,

1924; inspected by engineers from Albany office of the United States Geo logical Survey.

DISCHARGE MEASUREMENTS. Made from cable 500 feet below gage or by wading.CHANNEL AND CONTROL. Solid rock ledge; permanent.EXTREMES OF DISCHARGE. Maximum discharge recorded, 1,810 second-feet at

8 a. m. November 16 (gage height, 4.8 feet). Minimum stage, 0.90 foot at 9 p. m. July 8 (discharge, 4.6 second-feet).

1923-1926: Maximum discharge recorded, about 3,280 second-feet February 12, 1925 (gage height, determined from floodmark, 6.2 feet). Minimum stage, 0.89 foot at 5 p. m. July 23 and 7.30 a. m. July 24, 1923 (discharge, 4.5 second-feet).

ICE. Stage-discharge relation usually slightly affected by ice.REGULATION. Some regulation on Quaken Kill due to storage reservoirs for

water supply for city of Troy.DIVERSIONS. City of Troy diverts water for its supply from Quaken Kill 1 mile

below Quakenkill. This diversion is said to approximate 5 second-feet and during low water amounts to the entire flow of Quaken Kill.

ACCURACY. Stage-discharge relation permanent except as affected by ice. Rating curve well defined. Operation of water-stage recorder unsatisfactory. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of consider able fluctuation in stage, by averaging discharge for intervals of the day, except for periods of ice effect or of no record for which it was ascertained as indicated in footnote to table of daily discharge. Records good except those for periods of ice effect or those estimated which are subject to error.


discharge relation affected by ice).February 22, 1926: Gage height, 2.84 feet; discharge, 145 second-feet (stage-

discharge relation affected by ice).April 1, 1926: Gage height, 2.44 feet; discharge, 296 second-feet.July 16, 1926: Gage height, 1.19 feet; discharge, 14.7 second-feet.

148 SURFACE WATER SUPPI/ST, 1926, PART I

Daily discharge, in second-feet, of Poesten Kill near Troy, N. Y:, for the year endingSeptember 30, 1926

Day

1 _ .... __ ..2...............3... -_...__.__._4....... .5.. .............

6.. ..........__.7........... ..8...............910--.--.--.-. .

11- 12 13 .14 .... .. .15......... ._ .

16......... .. .17 ............_.18.. .............19- .. ... .20 _ . .. ..

21......... .- ..22....... .,...23 24..... .. .25...............

26 -27.. ..28......... . . .29...............30....... .....01SI...............

Oct.

4140626054

4944424050

9070757578

821021169270

67605857274

460266198176152127

Nov.

10998928278

122

281573341

227181304346290

1,300772455324255

208176152132116

10511115711692

Dec.

828688105105

1571421139873

60555046

4238384037

5814511110088

655550484238

Jan.

3842424457

7444464846

4644444444

444455550

1201009080

75707070SO90

Feb.

100

140140130130

140150170

Mar.

160160140130120

120140340220190

160150140140130

120120120130150

460

Apr.

282227201220214

236313984

1,4401,100

875652561630706

525460328298259

259448645580740

546354286278

. 224

May

187170195286204

1541301079088

841251028273

8478696064

5850544940

343028292521

June

3113321314694

71608611388

5741333064

13482523828

2318161513

1215161212

July

119.37.36.35.9

5.45.04.75.78.6

4027221916

1411122518

129.38.68.07.0

6.36.0

8.41511

Aug.

8.320633243120

7258866044

40511217958

4440362924

191617 '1820

443724211815

Sept.

15

8.67.67.0

6.76.06.07.910

9.37.6

122021

NOTE. Discharge Dec. 11-17, Dec. 26 to Jan. 4, and Jan. 9 to Mar. 20, determined from gage height corrected for ice effect by means of two discharge measurements, weather records, and comparison with flow of Hoosic River near Eagle Bridge and Fox Creek at West Berne. Gage-height record faulty or missing Oct. 8-16, Jan. 23 to Feb. 22, Feb. 25 to Mar. 3, Mar. 21-31, July 11-16, and Aug. 28 to Sept. 17; discharge estimated by comparison with stations noted above. Braced figures show mean discharge for periods indicated.

Monthly discharge of Poesten Kill near Troy, N. Y., for the year ending September 30,1926


Month

November _ -..-..---.-._.. .. . .- .. ..

January.. ____ . ____ .... ............

March _ ..... . .. ...April .............. .. ..... . ..May._.

July... .


Maximum

460 1,300

157 550 170

1,440 286 213

40 633

21

1,440

Minimum

40 78 37 38

120 201

21 12 4.7 8.3 6.0

4.7

Mean

104 257 74.8 86.5

111 263 496 91.9 58.2 12.0 68.2 12.8

136

Per square mile

1.18 2.92 .850 .983

1.26 2.99 5.64 1.04 .661 .136 .775 .145

1.55

Bun -off in inches

1.36 3.26 .98

1.13 1.31 3.45 6.29 1.20 .74 .16 .89 .16

20.98

HUDSON RIVEK BASIN 149

WAI1KILI BIVER AT PELLETS ISLAND MOUNTAIN, N. ?.

LOCATION. At highway bridge in Pellets Island Mountain, Orange County, 4*4 miles south of Middletown and b}i miles below mouth of Pochuck Creek.

DRAINAGE AREA. 385 square miles (measured on topographic maps).RECORDS AVAILABLE. December 29, 1919, to September 30, 1926. GAGE. Chain gage on downstream side of highway bridge; read by Michael

Meduski.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading 2 miles

below.CHANNEL AND CONTROL. Channel composed mostly of silt and control of coarse

gravel; fairly permanent.EXTREMES OF DISCHARGE. Maximum mean daily discharge recorded, 2,800

second-feet (corrected for backwater from ice) on March 1. Minimum stage, 2.30 feet several times August 11 and 12 (discharge, 17 second-feet).

1920-1926: Maximum stage recorded, 20.7 feet (old datum) at 7.30 a. m. March 16, 1920 (discharge, 8,350 second-feet); minimum stage occurred August 11 and 12, 1926.

ICE. Stage-discharge relation usually affected by ice.ACCURACY. Stage-discharge relation changed during ice break-up in March;

affected by debris on control October 4 to December 5 and by ice December 12-22 and January 9 to March 10. Standard rating curve used October 1 to February 28 well defined; curve used March 1 to September 30 well defined above 30 second-feet. Gage read to quarter-tenths twice daily. Daily dis charge for periods of no backwater ascertained by applying mean daily gage height to rating table; for periods of backwater from debris or ice daily dis charge ascertained as indicated in footnote to table of daily discharge. Records good except those for periods of backwater effect from debris or ice which are fair.

Discharge measurements of Wallkill River at Pellets Island Mountain, N. Y. during the year ending September 30, 1926

Date

Feb. 3 Feb. 25__ .......

Gage height

Feet

o 4.15» 5.34

Dis charge

Sec.-ft.

404769

Date Gage height

Feet

4.89

Dis charge

Sec.-ft. 1,370

723

Date

July 9.-. ...... _

Gage height

Feet 4.402.55

Dis charge

Sec.-ft. 56145. f

a Stage-discharge relation affected by debris on control. 6 Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Wallkill River at Pellets Island Mountain, N. Y. for the year ending September SO, 1926

Day

1 -2--..--. --------3-.-. ---------4 . .. ..5____ _________6___. ___________7 __ .__ ___89_.____. __..____

10- _--_____..-__11.--. --------12 13_-----_. _______14____ ___-_ ___15-

Oct.

616168759095

100807575807570

70

Nov.

220220220220220220220220400380360280550

850

Dec.

400420550950

1,3001,6301,5701,510

xl,4101,2601,020

900800750650

Jan.

148148148158180214252239220200180160130120100

Feb.

300500400280190220260260260260240220220200400

Mar.

2,8002,6002,4002,2001,9001,5001,3002,0002,4002,2002,0201,6601,3301,1301.040"

Apr.

990945945900855810810855

1,3301,3301,1801,080

990900810

May

377346300258258245245219206194158158158147147

June

88346606513393300219206194182136103113113182

July

645549454545404042403834312828

Aug.

5549434034312833272117195576

194

Sept.

170125219232232361550495460426286206170147121


Daily discharge, in second-feet, of Wallkill River at Pellets Island Mountain, N. for the year ending September 30, 1926 Continued

Day

1617181920.. . .. .

21... ............22.... ....._.....23-2425... ............

2627... .2829 ..30...............31..............

Oct.

95130

10090

75756565

260

55050048038028094fl

Nov.

CKfi

1 Qfifi

900750650600Cflfl

460420ecn

600460

Dec.

CKA

500460360qon

340460CAO

353OQyJ

oflfi

226Old

191158

Jan.

100100110

i AAA

OCA

7fiO

650flfift

550480400OAA

280240

Feb.

480460

550700

800900850800750

1,300

2 600'

Mar.

765

945

1,3301 cAA

1,6001,5401 480

1,2301,130

OHO

Apr.

725606

460426

393377

361346

513460

393393

May

147147170170194

182170158136121

111103

94949494

June

206170136103

84

84848178

105

147136115

9267

July

5240404747

4739404358

554642344043

Aug.

7001,100

8001,100

650

460400360320272

478645550460300219

Sept.

10799999994

9484787684

147182158147158

NOTE. Discharge Oct. 4 to Dec. 5 determined from gage heights corrected for backwater effect from debris on control by means of one discharge measurement. Discharge Dec. 12-22 and Jan. 9 to MBT. 10 determined from gage heights corrected for ice effect by means of two discharge measurements, observer's notes, and weather records. Discharge estimated Aug. 16-24, owing to unreliable gage-height record.

Monthly discharge of Wallkill River at Pellets Island Mountain, N. Y., for the year ending September 30, 1926


Month

October . _____ ....November . .

January...... _____ .. _ .. ,

March ___ ....... __ .....April... ... .... ......May ...JuneJuly.. .......

September

The year.. __ -.. ___ .. __ . .. .


Maximum

550 1,300 1,630 1,000 2,600 2,800 1,330

377 606

64 1,100

550

2,800

Minimum

61 220 158 100 190 685 346

94 67 28 17 76

17

Mean

150 556 668 347 603

1,510 719 181 179 43.1

308 197

455

Persquare mile

0.390 1.44 1.74 .901

1.57 3.92 1.87 .470 .465 .112 .800 .512

1.18

Run-oft' in inches

0.45 1.61 2.01 1.04 1.64 4.52 2.09 .54 .52 .13 .92 .57

16.04

WAIIKIII BIVEB AT GABDINEB, N. Y.

LOCATION. At steel highway bridge 500 feet below mouth of Shawangunk Kill, three-fourths mile northwest of Gardiner, Ulster County, and 7 miles above New Paltz.

DRAINAGE AREA. 716 square miles (measured on topographic maps).RECORDS AVAILABLE. September 23, 1924, to September 30, 1926.GAGE. Friez 7-day graph water-stage recorder on left bank; inspected-by

John Crispell.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Coarse gravel and boulders; shifts slightly.EXTREMES OF DISCHARGE. Maximum mean daily discharge, 4,800 seeond-feet

February 28 (stage-discharge relation affected by backwater from ice). Minimum stage recorded, 1.95 feet at 2 p. m. July 26 (discharge, 26 second- feet).


1924-1926: Maximum mean daily discharge, 6,500 second-feet (stage- discharge relation affected by ice) February 12, 1925. Minimum stage recorded July 26, 1926.

ICE. Stage-discharge relation seriously affected by ice.ACCURACY. Stage-discharge relation changed during ice break-up in March;

affected by ice December 25 to March 18. Rating curve used October 1 to March 18 well defined between 150 and 4,000 second-feet; curve used March 19 to September 30 well defined above 100 second-feet. Operation of water-stage recorder satisfactory except for a few short periods. Daily discharge ascertained by applying to rating table mean daily gage height obtained from recorder graph by inspection or, for days of considerable fluctuation in stage, by averaging discharge for intervals of the day, except for period of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Records good, except those estimated or those for period of ice effect which are fair.

Discharge measurements of Wallkill River at Gardiner, N. Y., during the year endingSeptember 30, 1926

Date

Oct. 18.. .Feb. "i.. ........Feb. 24. ...Mar. 25.-

Gage height

Feet 2.88

»4.12"5.56

5.59

Dis charge

Sec.-ft. 218

1,0501,3402,560

Date

Apr. 21..--....

Gage height

Feet 5.676.53

3.02

Dis charge

Sec.-ft. 2,6503,8601,120

306

Date

Apr. 21

JulyS. Aug. 23 _ _ .. ...

Gage height

Feet 3.673.892.463.79

Dis charge

Sec.-ft. 729907104804


Daily discharge, in second-feet, of Wallkill River at Gardiner, N. Y., for the year ending September 30, 1926

Day

1 ... ...2........ ------3.... .... .......4... _ .. ..5 . _ -6 .7... _____ ...S._ .............9 ...

10 -

11........ .......12 _ --.-3 14 ......15 . ..

16 17.. .......... ...18..... ..______..19.. . ......20 .. 21 32 .23 24 25. 26 27 ....28 29 . 30 ......31.... ...........

Oct.

136116124

9298

177168167176

157149167163186218199226289252177177178239595

1,120890743568486

Nov.

435439421405378425454554818736629624

3,0202,2101,7402,8602,2401,8501,5901,4401,2801,1401,040

906811647981

1,070892

Dec.

785683

1,1902,0302,1003,5902,7702,4102,1801,8501,5401,4001,3201,190

952900799545532685728

1,030964760,650550460420400360

Jan.

280300280380360440500460340320380320260260240260240

2,6002,0001,7001,5001,2001,1001,1001,000

900850750750650

Feb.

1,200950750460

, 480

500460480480460420420400400750850950

1,0001,1001,3001,500

1,5001,4001,4003,0004,000

Mar.

4,0004,2004,4004,0004, ,0002,8002,6003,8004,2003,8003,8003,6003,0002,6002,4002,0001,8001,7001,6302,0203,270

3,2803 1 P.A

2,7102,5902,290

1,7401,540

Apr.

1,9601,6401,4701,9001,5901,380

2,3403,5402,4101,9601,6901,4801,3201,2001,060

896807799617587581554471789855768

720657

May

670520570502455430425341297355301268230255241204291254245301333296262315229185198193

159145

June

223500779742492412396315311286265214173207208247266251221162170159149

180206204237204169

July

15413710410683

117116

9175727183

105856466615073

1127684848270578855

1141,980

937

Aug.

248172154133123

8482

203181145130157460308345

1,4102,6701,5301,9501,260

881722770689746

1,5601,2901,040

7815.95423

Sept.

355282281263381

1,0401,370

956767657469409382308251

229221220189

185175168175166174218235269270

NOTE. Discharge Dec. 25 to Mar. 18 determined from gage heights corrected for backwater from ice by means of two discharge measurements, observer's notes, and weather records. Discharge May 1-3 and £-7 estimated by comparison with flow at Pellets Island Mountain and Pine Bush, because of lack of gage- height record.


Monthly discharge of Wallkill River at Gardiner, N. Y., for the year endingSeptember 80, 1926


Month

July . ..

The year-. _____ . __ . ________


Maximum

1,120 3,020 3,590 2,600 4,800 4,400 3,540

670 779

1,980 2,670 1,370

4,800

Minimum

92 378 320 240 400

1,540 471 145 149 50 82

166

50

Mean

289 1,120 1,160

718 1,180 2,910 1,270

311 283 176 685 376

872

Persquare

mile

0.404 1.56 1.62 1.00 1.65 4.06 1.77 .434 .395 .246 .957 .525

1.22

Run-off in inches

0.47 1.74 1.87 1.15 1.72 4.68 1.98 .50 .44 .28

1.10 .59

16.52

SHAWAWGUNK Kill AT PINE BUSH, N. Y.

LOCATION. At Hardenburg Bridge, half a mile northeast of Pine Bush, Orange County, 5% miles below Platte Kill, and 10 miles above mouth.

DRAINAGE AREA. 103 square miles (measured on topographic maps).RECORDS AVAILABLE. September 24, 1924, to September 30, 1926.GAGE. Vertical staff in two sections on left bank. The lower section is fastened

to bridge abutment, the upper to an oak tree near-by; read by William Low.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Solid rock ledge; probably permanent.EXTREMES OF DISCHARGE. Maximum discharge recorded, about 1,760 second-

feet at 7 a. m. November 16 (gage height, 5.4 feet). Minimum stage, 0.70 foot several times July 27 and 28 (discharge, 7.5 second-feet).

1924-1926: Maximum discharge recorded, about 1,860 second-feet at 8.15 a. m. March 28, 1925 (gage height, 5.6 feet); minimum stage occurred July 27 and 28, 1926.

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation practically permanent except as affected

by ice. Rating curve revised at extremely low stages for use beginning March 9; both curves well denned. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage- height graph on basis of the two daily gage readings and averaging discharge for intervals of the day, except for period of ice effect for which it was as certained as indicated in footnote to table of daily discharge. Records good except those for period of ice effect which are fair.

Discharge measurements of Shawangunk Kill at Pine Bush, N. Y., during the year ending September 80, 1926

Date

Feb. 2. .........Feb. 24 -Mar. 26, _ .

Gage height

Feet "1.83"2.30

2.35

Dis charge

Sec.-ft 119132370

Date

Apr. 15-.--.-__-

Gage height

Feet 4.043.231.46

Dis charge

Sec.-ft. 1,080

728124

Date

Aug. 23__

Gage height

Feet 1.32.81

1.74

Dis charge

Sec.-ft. 95.813.0

185


HACKENSACK RIVER BASIN 153

Daily discharge, in second-feet, of Shawangunk Kill at Pine Bush, N. Y.,fov the year ending September 30, 1926

Day

12 - -3 . ... .. ...4 5---. ----------

7--.---..-......8 ............g

10.... ...........11..... ......... .12 -------13 14 . 15 16 17 18 19 ,20... .91

22 ------23 ------24- -------26

26 27 ---------28 29 _ - .--30 31

Oct.

181818232728252299

322724222845534545343443362953279304127102938981

Nov.

6567635553

871141548775

. 751,120

531

1,090489314179142123120110958177

385378154112

Dec.

8710290 K

344387782376250

142127118127104

656565553850160906565605555555048

Jan.

4850

556080908080757065

48464855

30095060030024011085707065656570200

Feb.

9dfl

12095751001001009590

. 85

80757075140130110110130260260170120130240850750500

Mar.

850750

460400480700

378430192179142131142129142131446607580500465395395296206142179

Apr.

361235,

328250179204656804419250206154142131112102878377778179791921009193129114

May

1H4.

87797369656157AQ

45454340383641403432756547454032282828282626

June

29131

69554549534336292629404336302824201820

26232349322322

July

1816

1514141412

12101012121 O

1211111212101014.1411988

112823118

Aug.

65473224181625

163

452824120131108241735346235192131118125142235445206127877363

Sept.

4747

41128

154108856555514540363838363228262436414751596969

NOTE. Discharge Dec. 15 to Mar. 8 determined from gage heights corrected for backwater from ire by means of two discharge measurements, observer's notes, and weather records.

Monthly discharge of Shawangunk Kill at Pine Bush, N. Y., for the year endingSeptember 30, 1926


Month

October

July

September ___ - __ _ __ . _ - __ _ ...


Maximum

304 1,120

782 950 850 850 804 104 131 823 735 448

1,120

Minimum

18 53 38 46 70

129 77 26

l 18( 816 248

Mean

58.9 226 145 137 189 376 201 48.6 39.3 45.0

142 77.4

140

Per square mile

0.572 2.19 1.41 1.33 1.83 3.65 1.95 .472 .382 .437

1.38 .751

1.36

Run-off in inches

0.66 2.44 1.63 1.53 1.91 4.21 2.18 .54 .43 .50

1.59 .84

18.46

HACKENSACK RIVER BASINHACKENSACK RIVER AT NEW MILFORD, N. J.

LOCATION. At pumping plant of Hackensack Water Co., New Milford, BergenCounty, 3}£ miles below mouth of Dwars Kill.

DRAINAGE AREA. 113 square miles (measured on State topographic map). RECORDS AVAILABLE. October 28, 1921, to September 30, 1926. GAGE. Water-stage recorder on right bank 40 feet above south dam. Vertical

staff gage in Oradell Reservoir is read once daily. Gages read and recorderoperated by employees .of Hackensack Water Co.


DISCHARGE MEASUREMENTS. Measured from highway bridge at Oradell, half amile upstream.

CHANNEL AND CONTROL. Two spillways and sluice gates at the pumping plantfore bay form control.

EXTREMES OF DISCHARGE. Maximum stage during year from water-stagerecorder, 2.94 feet at 6 p. m. March 8 (discharge, 970 second-feet; diversionnot included).

1922-1926: Maximum stage recorded, 4.05 feet at 4 p. m. April 7, 1924(discharge, 1,880 second-feet; diversion not included).

DIVERSIONS. Water is diverted above control by Hackensack Water Co. Thisdiversion is measured by Venturi meter and included in the table of monthlydischarge.

STORAGE. Water is stored in Oradell Reservoir, 1 mile above gage. Correctionfor storage has been applied to monthly record.

ACCURACY. Stage-discharge relation permanent. Rating curve well definedabove 40 second-feet. Operation of water-stage recorder satisfactory.Daily discharge ascertained by applying mean daily gage height to ratingtable or, for days of considerable fluctuation, by averaging discharge forintervals of the day. Records good.

No discharge measurements made during year.

Daily discharge, in second-feet, of Hackensack River at New Milford, N. J., for the year ending September 80, 1926

Day

1.... .... .2. -.3. 4_. _ . ____ .-5. .

6 T.... ...........8 9 ....... ...10

11 12 13 _ ............14 ..15 _ ............

16 17.. .. .18.. 19 .20 .

21 22 .23...............24...............25. __ ..........

26 27 ___ ..........28...............29...............30.... ......31 __ .. . .

Oct.

22232

45623

22224

232

8

93

849297

1608882

Nov.

204112585371

10940234254

5245

186425377

360335238198139

11781565856

581821W

7161

Dec.

6396

361441454

463382331246163

1321161208866

6667686566

63irtQ202

124

QQ

806441

16

Jan.

1636588192

7070727172

6969694628

99

2323

204420

354326326326QO1

18554453123O1

Feb.

2121354945

4761616163

61616363

19Q

9fi4.167163O1 A.

980

326305OCfi

9«W

343

fi*79

707744

Mar.

744744744636433

326661936772

51536094fi

214914.

166an

93123257

374326326qoft

315

315289000

185136

Apr.

161214214218341

412412412412412

310209136136

846438QO

25

2527294581

199

97

4

May

51105462356

635

214524

52

13

1810

5

18OR

38ooOQ

192636211691

June

2332453434

2924343613

24

2910

9

2

42

July

2222

22222

22

2

2

42

2

22

2

2

Aug.

22222

2222

2

22

1Q

61

514201

94.91

07

3891

166

Sept.

28

1598

2575(3Q

4635

2518115

3

3

2

4

NOTE. This table does not Include diversion nor storage.

PASSAIC EIVER BASIN 155

Monthly discharge of Hackensack River at New Milford, N. J., for the year endingSeptember SO, 1926


Month

December ___________

February ____________

April..........................May ..........................

July....... .............. .......


Observed

Maximum

160 425 463 420 744 936 412 105 45

4 61 75

936

Minimum

2 23 16 16 21 90

2 2 2 2 2 2

2

Mean

24.6 134 157 117 195 373 160 25.6 13.0 2.08

12.9 13.1

102

Corrected for storage and diversion

Mean

62.9 162 197 161 250 407 232 89.6 51.1 32.8 69.7 51.1

147

Per square mile

0.557 1.43 1.74 1.42 2.21 3.60 2.05 .793 .452 .290 .617 .452

1.30

Run-off in inches

0.64 1.60 2.01 1.64 2.30 4.15 2.29 .91 .50 .33 .71 .50

17.58

NOTE. No correction made for evaporation.

PASSAIC RIVER BASIN

PASSAIC RIVER NEAR MI1UNGTON, N. J.

LOCATION. At highway bridge known as Davis Bridge, 1 mile above Millington, Somerset County, \}^ miles below mouth of Black Brook, three-fourths mile above gaging station formerly maintained at Millington.

DRAINAGE AREA. 55 square miles (measured on State topographic map).RECORDS AVAILABLE. November 10, 1921, to September 30, 1926. At Milling-

ton three-fourths mile downstream November 25, 1903, to July 15, 1906.GAGE. Water-stage recorder on right bank 200 feet below Davis Bridge; in

spected by Mrs. A. H. Schmidt.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Channel of coarse gravel. There is a low concrete

control 80 feet downstream from gage which is effective during low and medium stages; at high stages riffle 300 feet below gage.

EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 6.81 feet at 3 p. m. February 26 (discharge, 668 second-feet); minimum stage, 3.63 feet August 11 and 12 (discharge, 3.4 second-feet).

1903-1906; 1922-1926: Maximum stage recorded, 7.50 feet March 8, 1904 (discharge, 2,000 second-feet); minimum discharge, 2.5 second-feet from current-meter measurement October 18, 1923.

ICE. Stage discharge relation usually slightly affected by ice.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve fairly well defined above 7 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height as determined by inspection of recorder charts. Records good.

The following discharge measurements were made: November 18, 1925: Gage height, 5.24 feet; discharge, 200 second-feet. April 7, 1926: Gage height, 4.72 feet; discharge, 99 second-feet. September 14, 1926: Gage height, 4.68 feet; discharge, 95 second-feet.

63435 30 11

156

Daily discharge, in second-feet, of Passaic River near Millington, N. J. t for the year ending September SO, 1926

Day

1 _______2.... ...........3.... ...........

g

7.... ...........8 ............9... .......... ..10

11. 12.... ...........13 14.... ...........15.... ____ ....

16. _______ ...17...... .........18. 19 20

21...............22...............23 24 ...... 25. .

26 27......... ......28.. .............29. 30.. _ ......31 -

Oct.

119.9202752

5951352727

2018171761

8390837055

4438

37121

20819616414211691

Nov.

7867595247

CO

586460

52

319280

280280219174142

110

Dec.

1 2801

460

4.QO

319243185

144.1201109678

73665854

5654677059

443628212119

Jan.

2021242530

3937252223

1919171615

16

38173138

1201471287544

302724181632

Feb.

9681743421

on

21232020

2020202536

587369160

20815211886154

595630525

Mar.

386372400319196

121215525460306

20816412011095

8580737790

106113120142140

146164142120103103

Apr.

138125113138125

110103130208164

140113968375

6661554844

4039373748

4638363734

May

3329272523

2121212018

1817161927

3355494037

3026232018

161416131613

June

1925242018

1618181614

1212141316

1515121211

9.511121515

1212109.58.7

July

7.98.37.57.17.1

9.' 59.97.19.57.5

9.19.18.78.38.7

9.99.9

111717

11107.99.1

23

2717129.51615

Aug.

1414129.98.7

7.97.97.16.16.1

4.09.1546764

6711013011693

6649393848

484636302318

Sept.

15245254

300

2431701209063

4940342925

2118151818

1716162423

NOTE. Stage-discharge relation affected by ice Dec. 15, 18, 19, 26, Jan. 23, Feb. 9-13, and Mar. 13-17; gage-height record missing Nov. 21 to Dec. 4, Sept. 5-10 and 12-14. Discharge for these periods estimated by study of weather records, recorder charts, gage-height graph, and comparison with record of flow for Whippany River at Morristown.

Monthly discharge of Passaic River near Millington, N. J., for the year endingSeptember, SO 1926


Month

July. .... ..................... .........

September ______________ . ____ ..


Maximum

208 319

173 630 525 208 55 25 27

130

630

Minimum

9.947 19 15 20 73 34 13 8.7 7.1 4.0

15

4.0

Mean

65.4 125 147 44.9

129 187 84.2 24.3 14.5 11.2 40.3 99.8

80.6

Persquare mile

1.19 2.27 2.67 .816

2.35 3.40 1.53 .442 .264 .204 .733

1.81

1.47

Run-off in inches

1.37 2.53 3.08 .94

2.45 3.92 1.71 .51 .29 .24 .85

2.02

19.91

PASSAIC RIVER BASIN 157

PASSIAC EIVER AT PATEKSON, N. J.

LOCATION. At hydroelectric power plant of The Society for Establishing Useful Manufactures in Paterson, Passaic County.

DRAINAGE AREA. 785 square miles.RECORDS AVAILABLE. January, 1898, to September 30, 1926.DETERMINATION OP DISCHARGE. Daily discharge at Paterson determined by

engineers of The Society for Establishing Useful Manufactures. This con sists of discharge over spillway computed from a theoretic formula, discharge through turbines determined from manufacturers' ratings, discharge through the Dyers' pipe line, metered, discharge through the old race measured twice daily by current meter, and discharge to steam power plant.

DIVERSIONS. In the monthly-discharge table, correction has been made for water diverted above Paterson by Passaic Consolidated Water Co. at Little Falls, Newark waterworks at Macopin intake dam, Jersey City waterworks at Boonton, Commonwealth Water Co. at Canoe Brook well field, and East Orange waterworks at Canoe Brook well field. Diversions by Passaic Consolidated Water Co., Newark, and Jersey City are measured by Venturi meters; diversions by Commonwealth Water Co. and East Orange measured by piston displacement.

REGULATION. In monthly-discharge table correction has been made for storage in the Newark reservoirs at Oak Ridge, Clinton, Canistear, and Echo Lake; in the Jersey City Reservoir at Boonton; and in Greenwood Lake. No correction was made for evaporation from the surface of the various reservoirs, which comprise about 1 per cent of the total drainage area.

COOPERATION. Base data furnished by John H. Cook, Deputy Governor, The Society for Establishing Useful Manufactures, by Passaic Consolidated Water Co. Newark waterworks, Jersey City waterworks, Commonwealth Water Co., and East Orange waterworks.

Daily discharge, in second-feet, of Passaic River at Paterson, N. J., for the year ending September 80, 1926

Day

1 __ ....2 _ ... 3... ... ... ...4. _ ...........5.... ..... ...6...... ... ...7 __ . _ ......8. _ ........9.......... .....

10.. _ .... ......11....... .....12. 13..... .......14. .15 ..... ..........16 17 .18. 19 -. 20. .21. __ .... 22.... _ ........23. 24...... .........25 26 27. __ . _ ......28 29 . 30 31 .........

Oct.

56483613226432832930631323024917516657

294366413415365345285247237142560

1,082904844824768823

Nov.

749627560496450397421444483474396713

2,9603,4102,5292,9052,9952,6522,4762,3522,1971,9101,7521,5441,3841,2801,2721,5011,4231,299

Dec.

1,2901,5732,4943,7823,9493,8393,8733,6383,3663,0042,6502,4522,2701,9381,6431,4911,3571,2311,1071,0081,0681,2361,2101,0901,025748488549484412355

Jan.

349345363382430498518448372367397403181254228242259551

1,7021,5081,5841,9431,5811,4331,3051,3881,218727414640749

Feb.

1,2821,163948459674901925786632552571545594718968

1,1471,1291,2121,6582,0711,9501,7721,6681,6442,3315,5195,2794,686

Mar.

4,7524,9394,9334,3394,0403,2203,7694,4514, 1703,9943,6693,2322,8792,4952,1681,9001,6861,4801,5321,6302,0022,0922,2502,4092,4062,4292,4662,2602,1051,9662,012

Apr.

2,3862,1452,0802,3492,2532,0381,9992,3342,7622,6392,5212,2632,0641,9241,7811,7131,4061,278989908829821762782

1,1261,189854738693692

May

664687584562480384377411329364212264256347547568646627544424392345290309369188144124215169197

June

37129136933431518926326625021665

207152140233235198184112129595491728214178675455

July

595146342851867364408050464648471221691751651779665143405484522533495467455

Aug.

4213791431447745358245392850

307908

1,0371,1251,9121,6391,5241,3721,1001,001

945862791778756614482350319

Sept.

134637711695749

1,5712,4492,0101,8101,8271,8401,7981,7181,6141,4081,3141,12&974691501398-155175202233244180178160242

NOTE. This table indicates the total flow in the river above the Great Falls.


Monthly discharge of Passaic River at Paterson, N. J., for the year endingSeptember 80, 1926


Month

April........ .. __

July.........................August ____________

The year ________


Observed

Maximum

1,082 3,410 3,949 1,943 5,519 4,939 2,762

687 371 533

1,912 2,449

5,519

Minimum

36 396 355 181 459

1,480 692 124 64 28 28

134

28

Mean

374 1,470 1,830

735 1,560 2,890 1,610

388 176 172 623 925

1,060


Mean

583 1,920 2,170 1,010 1,910 3,210 1,860

619 380 346 949

1,190

1,340

Per square mile

0.743 2.45 2.76 1.29 2.43 4.09 2.37 .789 .484 .441

1.21 1.52

1.71

Run-off in inches

0.86 2.73 3.18 1.49 2.53 4.72 2.64 .91 .64 .51

1.40 1.70

23.21


EOCKAWAY RIVER AT BOONTON, N. J.

LOCATION. At dam of Jersey City waterworks at Boonton, Morris County. DRAINAGE AREA. 119 square miles (measured on State topographic map). RECORDS AVAILABLE. January 1, 1906, to September 30, 1926. GAGE. Elevation of water surface in reservoir determined by measuring from

a reference point on dam to water surface with a graduated rod; read oncedaily by an employee of the Jersey City waterworks.

Water-stage recorder on left bank a quarter of a mile below dam; inspectedby an employee of the Jersey City waterworks.

DETERMINATION OF DISCHARGE. Discharge determined at gaging station below,dam. Previous to March 3, 1918, discharge over dam was determinedfrom elevation of water surface in reservoir and rating curve for spillway.

DISCHARGE MEASUREMENTS. Made from footbridge near recorder station orby wading.

CHANNEL AND CONTROL. Coarse gravel; probably permanent. STORAGE. Records corrected for storage above dam. DIVERSION. Water diverted to Jersey City through pipe line measured by

Venturi meter. Records corrected for this diversion. COOPERATION. Gage-height records and records of diversion furnished by the

bureau of water, department of streets and public improvements, JerseyCity, N. J.

The following discharge measurements were made: March 22, 1926: Gage height, 2.01 feet; discharge, 253 second-feet. March 22, 1926: Gage height, 2.04 feet; discharge, 260 second-feet. May 18, 1926: Gage height, 0.26 foot; discharge, 0.6 second-foot.

PASSAIC KIVEK BASIN 159

Daily discharge, in second-feet, of Rockaway River at Boonton, N. J., for the year ending September 30, 1926

Day

1. _ . ____ .2..... .... ......3 . 4 ... ... .... ..5. . .............

6.... .......... .7...............8 ......9...............10--..,.. .-...

11 12...............13...............14.. .............15

16 ....... ... .17 ...... .....18...............19... . .......... .20. . ....... ..

21 ...........22... . ............23................24...... .........25

26 ... .......27...............28...............29...............30..... ..........31 .

Oct.

0.5.5.5,5.6

.5

.5

.6

.8

.8

.8

.8

.81.21.1

.8

.91.11.11.1

1.21.21.21.56.0

.31.9.3.3.3.3

Nov.

0.3.3.3.3.3

.5

.5

.5

.5

.5

.5

.88.05.0

119

442

413342316

288224167133119

102135224213156

Dec.

135178237442532

563594472413356

275237213189156

1331191048785

14514510880

6368178.0.5.3

Jan.

0.3.3.3.3

i 9

15198.05.0.9

.2

.2

.2

.2

.2

.3

.5237316

18922414512884

59434010

.813

Feb.

8094635911

3251453229

2514234.n77

156121108189263

275201156114156

594627413

Mar.

413413413328275

224302594532413

328288237213189

145124116124145

213249263275275

275288288263213213

Apr.

263249224224237

201178224342328

263224201178156

145119978880

876746114135

825506365

May

4643432920

1711108.0.9

.6

.5

.5

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

June

0.5.5.5.5.5

.3

.5

.3

.3

.3

.3

.5

.5

.5

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

July

0.5.5.5.5.5

.5

.5

.5

.5

.5

.5

.5

.3

.3

.3

.3

.3

.5

.5

.5

.3

.3

.3

.61.1

.5

.5

.3

.3

.3

.3

Aug.

0.3.3.3.3.3

.3

.3

.3

.3

.3

.3

.5

.51.11.1

3.22.3.81.21.5

1.51.11.11.1.9

.9

.8

.8

.8

.6

.6

Sept,

0.52.21.54.090

342563442316237

189>156-104:

201128

1.51.1.8.8.6

.63.61.51.2.5

.5

.5

.5

.5

.5

NOTE. This table indicates flow over spillway and through waste gates and leakage through dam.

Monthly discharge of Rockaway River at Boonton, N. J., for the year endingSeptember SO, 1926


Month

April. ...... ....... ..-.. ..

June - . July...... ................


Observed

Maximum

6.0 501 594 316 627 594 342

46 .6

1.1 3.2

563

627

Minimum

0.3 .3 .3 .2

11 116

8.0 .5 .3 .3 .3 .5

.2

Mean

0.968 130 202 49.8

145 278 156

7.70 .470 .445 .829

93.0

88.2


Mean

95.4 288 305 158 266 379 250 108 75.0 89.4

146 200

196

Per square mile

0.802 2.42 2.56 1.33 2.24 3.18 2.10 .908 .630 .751

1.23 1.68

1.65

Run-off ininches

0.92 2.70 2.95 1.53 2.33 3.67 2.34 1.05 .70 .87

1.42 1.87

22.53



WHIPPAWY RIVER AT MORRISTOWff, KT. J.

LOCATION. At Morristown sewage disposal plant, three-fourths mile below Morristown, Morris County, and 8 miles above mouth of river.

DRAINAGE AREA. 29 square miles (measured on State topographic map).RECORDS AVAILABLE. August 26, 1921, to September 30, 1926.GAGE. Vertical staff on left bank 150 feet above chlorination house of sewage-

disposal plant; read under direction of William H. Frapwell.DISCHARGE MEASUREMENTS. Made by wading near gage.CHANNEL AND CONTROL. Channel of sand and fine gravel; control is riffle 50

feet below gage. Right bank is overflowed at very high stages.EXTREMES OF DISCHARGE. Maximum stage during year from high-water mark,

4.82 feet at 8 p. m. February 25 (discharge, about 585 second-feet); mini mum stage recorded, 0.82 foot at 8.30 a. m. July 23 (discharge, 7 second-feet).

1921-1926: Maximum stage estimated from hydrograph, 6.50 feet at 4 a. m. April 7, 1924 (discharge, about 830 second-feet); minimum stage recorded, 0.80 foot at 5.30 p. m. October 5 and 7, 1921 (discharge, 6.3 second-feet).

ICE. Stage-discharge relation affected by ice during extreme cold.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined below 300 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

COOPERATION. Gage read by an employee of the commissioner of Department of Public Works of Morristown.

The following discharge measurements were made: November 18, 1925: Gage height, 1.43 feet; discharge, 53 second-feet. April 1, 1926: Gage height, 1.64 feet; discharge, 73 second-feet. September 15, 1926: Gage height, 1.10 feet; discharge, 24.9 second-feet.

Daily discharge, in second-feet, of Whippany River at Morristown, N. J.,for the year ending September 30, 1926

Day

l. ..............2..... ...... ...-3 - .- _.4... ............5...............6.. ...... ...... .7.. ............ .8... .........9..... ..........10... ........... -11...............12.. .............13 _ ............14... ............15. ...........16 . 17...............18 ............19....... .... _20 21 22.--.------.-...23... .....24... ............26. ..26.. 27... ............28... ............29.. ........... ..30 . .31

Oct.

11392047

171416

14141313602523201817

161817

170984331272525

Nov.

OK

25OK

99

2135292937262424

92

170765349AK

444040

333592814740

Dec.

KO

1290401 Rfi

no

0901

767670655856KC

48

476576

47

38363400

3130

Jan,

onon,oooeAf>

36Ol

onon

242424OK

25OQ

ija

OQfl

5848

483901

293331ocOK

32

Feb.

9242363300

3600

90.00

00

3300

38921045144

26119Q

655250

14986

Mar.

Q9

86704958

230230ot

65

5240

4 c

47

50

56

CO

707060

57en

4857

Apr.

KO53

5748521041226459545050

4747

404040

65

4040

40

May

4040373500

01

313027

25

5939354630283728

26

99

212020i n

18.23

June

28352220202133oo18172022216028oo

18

14202317

1816

12

July

12111212

97

16

10

1912

12

17

1241

1412828

293532822224025

Aug.

22OK

201816

14

12124798397640

49 v>282326362832302522201916

Sept.

16KK

65284219Q

23060476030

33312997

26V,K

25242499

2000

252327oo

223728

NOTE. Stage-discharge relation affected by ice Dec. 27, 28, Jan. 12, 29, Mar. 11, 12, and 14; discharge estimated, based on study of hydrograph and weather record.

PASSAIC EIVEE BASIN 161

Monthly discharge of Whippany River at Morristown, N. J., for the year endingSeptember SO, 1926


Month

November ____________________

April ___ ..... __ _______________

June ___ . ___________________July.. ......................................

The jear.. _____________ . .....


Maximum

170 411 343 230 360 230 122 59 60

293 122 230

411

Minimum

1121 30 23 29 45 40 18 12 8

12 16

8

Mean

29.7 58.7 77.5 42.6 78.4 73.9 54.1 30.0 21.5 27.5 32.1 42.1

47.1

Persquare mile

1.02 2.02 2.67 1.47

2.70 2.55 1.87 1.03 .741 948i'.n

1.45

1.62

Run-off in inches

1.18 2.25 3.08 1.70 2.81 2.94 2.09 1.19 .83

1.09 1.28 1.62

22.06

RAMAPO RIVES NEAR MAHWAH, N. J.

LOCATION. At concrete highway bridge 1 mile west of Mahwah, Bergen County, three-fourths of a mile below mouth of Mahwah River.

DRAIN AGE ABBA. 118 square miles (measured on State topographic map).RECORDS AVAILABLE. February 10, 1903, to July 31, 1914; September 1, 1922,

to September 30, 1926. Records from 1907 to 1914 consist of gage heights only, published by United States Weather Bureau.

GAGE. Water-stage recorder on right bank just below bridge; installed Sep tember 1, 1922; inspected by Clarence Wanamaker.

DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Coarse gravel; control is gravel riffle 150 feet below

bridge.EXTREMES OP DISCHARGE. Maximum stage during year from water-stage

recorder, 6.40 feet at 7 p. m. February 26(discharge, about 1,320 second-feet); minimum stage, 1.74 feet at 11 p. m. August 4 (discharge, 16 second-feet; stage-discharge relation affected by backwater).

1922-1926: Maximum stage recorded, 7.90 feet at 12.30 p. m. April 7, 1924 (discharge, about 2,400 second-feet); minimum stage, 1.57 feet at 9 a. m. September 20, 1923 (discharge, 11 second-feet).

ICE. Stage-discharge relation affected by ice only during short periods of ex treme weather.

REGULATION. Daily distribution of flow affected by water powers at points upstream.

ACCURACY. Stage-discharge relation not permanent. Rating curves well defined below 800 second-feet. Daily discharge determined from automatic gage records by use of discharge integrator and by shifting-control method. Records fair.

Discharge measurements of Ramapo River near Mahwah, N. J., during the year ending September SO, 1926

Date

Oct. 22..... .Dec. 3... .......

Do.. . Dec. 4.... .Dec. 15. _ .....

Gage height

Feet 1.923.723.824.822.94

Dis charge

Sec.-ft. 30.6

372397670190

Date

Do..... .

Gage height

Feet 3.093.082.472.40

Dis charge

Sec.-ft.

23410190

Date

July 21 Do..

Aug. 21...

Gage height

Feet 1.801.802.832.03

Dis charge

Sec.-ft. 18.918.9

16338.7

162 SURFACE WATEK SUPPLY, 1926, PART I

Daily discharge, in second-feet, of Ramapo River near Mahwah, N. /., for the year ending September SO, 1926

Day

1 ...............2... _ . _ . _ .3............ ...4............ ...5__... ..........

6-..-..-........7...............8...............9 __ .. . ,10...............

11 ............12...............13...............14...............15...............

16 .17...............18...............19 _ ............20...............

21................22...............23.. .............2425 . .

26...............27...............28 _ .29...............30. .31...............

Oct.

3134353659

6246373937

2736333456

50

373949

31

3078

9475666442

Nov.

5461485943

5668527472

6572

754782445

647635445343293

257210

154144

175269220180

Dec.

200260368658663

721635490406337

281269257221186

175IfU144134128

210186

130

101104878378

Jan.

72

. 85

69

7874676568

6642124525343

269393318269198

| 140|

115

Feb.

257186ifid221257

175144

120

105112198

210175164306445

368306281257421

1,2701,010

635

Mar.

579663607445393

368471840607498

419368343318281

257233221245318

419445471498498

498445393343318343

Apr.

445393343471419

368368445607552

445393343318293

269245216208208

194204228214293

254174158161146

May

148134150142136

108104967388

848286104100

981281028886

8676758269

505050505252

June

7096908069

5269654650

5044464878

6656544440

4144465052

4442464244

July

3636323230

3230303028

2428282620

2120242320

2019192032

252119242524

Aug.

2324211922

2020313738

293592140122

240407343419276

"15011010794114

167159114918074

Sept.

6466717597

203263188

. 8589

8065645854

4640353634

4034364438

4851394738

NOTE. Stage-discharge relation affected by ice Feb. 8 and 12; gage-height record missing Nov. 29, 30, Dec. 1, 2, Jan. 2-9, 26-29, Feb. 9-11, May 15, 28, and 29. Discharge for these periods estimated from study of weather records and hydrograph and by comparison with record of discharge of Ramapo River at Pomp- ton Lakes. Discharge Oct. 1-22 and Feb. 27 to Aug. 13 determined by shifting-control method, the va riable gage-height correction is based on six discharge measurements made during these periods.

Monthly discharge of Ramapo River near Mahwah, N. J,, for the year endingSeptember SO, 1926



Month

OctoberNovember ____________________December

February.. .... _______________March _

May ...

July

September _ ...... ......................

The year.. _ ..... ......................

Maximum

136782721525

1,2708406071509636

419263

1,270

Minimum

27437842

1052211465040191934

19

Mean

49.223326114629542431291.355.525.7

11770.9

172

Persquare mile

0.4171.972.21.1.242.503.592.64.774.470.218.992.601

1.46

Run-Off in inches

0.482.202.551.432.604.142.94.89.52.25

1.14.67

19.81

PASSAIC RIVER BASIN 163RAMAPO ELVER AT POMPTON LAKES, W. 3.

LOCATION. At municipal hydroelectric plant, borough of Pompton Lakes, Passaic County, \% miles above mouth of Ramapo River.

DRAINAGE ABEA. 160 square miles (measured on State topographic map).RECORDS AVAILABLE. October 29, 1921, to September 30, 1926.GAGES. Water-stage recorders at right end of dam and on left bank of tailrace,

respectively. Wicket-gate opening for each turbine is recorded hourly from indicators on the turbine governors. Recorders operated and gages read by power-house operators.

DISCHARGE MEASUREMENTS. For spillway, made from cable 300 feet below dam or by wading; for tailrace, made from temporary footbridge at gage.

DETERMINATION OF DISCHARGE. Flow at this station determined by computing discharge over spillway and through the two turbines (measured in the tailrace).

EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 1.28 feet at 2 a. m. February 27 (discharge, 2,020 second-feet; flow through turbines not included).

1921-1926: Maximum stage recorded, 2.58 feet at 7 p. m. April 7, 1924 (discharge, about 6,800 second-feet; flow through turbines not included).

REGULATION. Record indicates flow as released by power plant. No correction made for storage in pond or for evaporation from its surface.

ACCURACY. Rating curve for spillway well defined between 40 and 2,500 second- feet. Discharge rating for tafrace well defined. Discharge over spillway determined by applying mean daily gage height to rating table and by use of discharge integrator. Discharge through tailrace ascertained by use of discharge integrator; and for periods of backwater from wicket-gate openings. Records good.

COOPERATION. Borough of Pompton Lakes has provided the shelters for the water-stage recorders and furnishes the power-plant records for computation of discharge.

Measurements of discharge in tailrace and over spillway on Ramapo River at Pompton Lakes, N. J., during the year ending September SO, 1926

Date

Oct. 20.-..-.. __ .Do-.. .....Do-.. Do . ... ..

Mar. 23... ____Do... .

Tailrace

Gage height

Feet 7.60 7.618.54 8.65 7.847.77

Dis charge

Sec.-ft. 37.9 38.0

121 132 48.7 41.0

Spillway

Gage height

Feet

0.66

Dis charge

Sec.-ft.

"540

Date

May 21.. ....... .Do ... _ ..

Aug. 20 Do

Tailrace

Gage height

Feet 7.98 7.69 8.63 8.40 8.30

Dis charge

Sec.-ft. 60 41.0

137 103 92

Spillway

Gage height

Feet 0.157

Dis charge

Sec.-ft. 55

0 Total flow of river measured from cable and discharge through turbines subtracted to obtain spillway discharge.


Daily discharge, in second-feet, of Ramapo River at Pompton Lakes, N. J., for the year ending September 30,1926

Day

1........ __ ..2 _ ..... _ ....3...............4.... _ ... _ ..5.. _ ..........6. ...........7 _ ............8... ............9... . ...........10.. .............11 .12...............13...............14...............15...............16.... ...........17.. _ ... .. 18...............19.......... ..20...............21 2223...............24...............25 26 ....... ..27...............28..... .......29...............30...............31 ............

Oct.

2377427073656165655562242956606454646266652916781891511201079893

Nov.

717690798580959010310499109

1,0701,240713908938659487411359294263228205183239378299243

Dec.

250332512934

1,0001,100978730591479393366341308262242229214195181215267273218190181125132137130126

Jan.

Ill119

132143154155

12411211711210310410510691115660523379554426346269247224203145167172

Feb.

327279224141183227220203191201185191190181275299247250408615556459394344469

1,8301,8001,210

Mar.

940976

1,080779591503658

1,3101,060764625536468406374329291327326402578587626674659661626530465412429

Apr.

612550522636659537495560820820694612527451387

.337318273252247234230258262359347242212208193

May

1951771861781681551421371061211201101111521611391571481261311191119711097857779826974

June-

891221271119781839687666875607994887669597046534950455343454747

July

4447504243484647203333274247514848,49474822333

4547545571

Aug.

633032254439485257587513516450538951236921315716614414718920216812711294

Sept.

9191859610525646131020115914912111310191856862475556576858675466384864

NOTE. Recorder on spillway not operating properly Mar. 9-10, Apr. 3-9, June 12-15, Sept. 1-4, and 12-15; discharge estimated by study of hydrograph of flow at Mahwah. Discharge for high days in January, February, and March may be affected by ice sheet on lake; no correction for this.

Monthly discharge of Ramapo River at Pompton Lakes, N. J., for the year endingSeptember 80, 1926


Month

June -.. July.......... .................................


Maximum

189 1,240 1,100

660 1,830 1,310

820 195 127

71 512 461

1,830

Minimum

7 71

125 91

141 291 193 69 43

3 2

38

2

Mean

65.2 340 375 209 432 613 428 126'

72.5 35.8

137 111

244

Per square mile

0.408 2.12 2.34 1.31 2.70 3.83 2.68 .788 .453 .224 .856 .694

1.52

Run-off in inches

0.47 2.36 2.70 1.51 2.81 4.42 2.99 .91 .51 .26 .99 .77

20.70

NOTE. Data not corrected for storage in nor evaporation from Pompton Lakes.

GREENWOOD LAKE AT THE GLENS, N. J.

LOCATION. On Erie Railroad bridge 100 feet above dam at The Glens, PassaicCounty.

DRAINAGE AREA. 27 square miles (measured on State topographic maps). RECORDS AVAILABLE. June 1, 1898, to November 16, 1903; June 1, 1907, to

September 30, 1926.

PASSAIC KIVEK BASIN 165

GAGE. Vertical staff on railroad trestle; read to half-tenths once a day by A. Pepitone.

CONTROL. A masonry dam with two wooden sluice gates. Average elevation of spillway crest at gage height 100.0 feet.

EXTREMES OF STAGE. Maximum stage recorded during year, 100.85 feet. Several days in December; minimum stage, 98.55 feet on several days in October.

1898-1903; 1907-1926: Maximum stage recorded, 102.37 feet several days in March, 1902 (also gage height was reported as "2 feet over gage" approximately, 104.0 feet October 9-14, 1903); minimum stage, 93.25 feet, several days in November, 1900.

REGULATION. Greenwood Lake Dam was constructed to provide a storage- reservoir for the water supply of Morris Canal. Morris Canal was takea over by the State of New Jersey March 1, 1923. Navigation was aban doned by act of the State legislature March 13, 1924. Very little regula tion of the lake is required for the canal after this date.

COOPERATION. Records furnished by Morris Canal & Banking Co.

Daily gage height, in feet, of Greenwood Lake at The Glens, N. J., for the year endingSeptember SO, 1926

Day

1 2 .... ........3 ........ ... .4.. ............ ..5 . ... --.-..

6-_ .. _-.7.. .............8 . ........ ...9 -.:--.

10.. ..........

11 .... 12 ........13.. ...... .......14 15

16...............17...............18 ..........19...............20...............

21... ............22 23.... ...........24....... ........25 ...........

26...............27...............28...............29...............30...............31

Oct.

99.2 99.2 99.2 99.15 99.1

99.1 99.05 99.0 98.85 98.85

98.85 98.85 98.75 98.75 98.75

98.75 98.75 98.7 98 65 98 65

98 6 98 6 98 55 98.55 98.55

98.55 98.6 98.65 98.75 98.8 98.85

Nov.

98.85 98.85 98.85 98.85 98.85

98.85 98.8 98.9 98.95 98.95

99.0 99.0 99.25 99.55 99.75

99.95 100.2 100.25 100.25 100.25

100.3 100.25 100.25 100.25 100.25

100.25 100.25 100.25 100.25 100.27

Dec.

100.3 100.3 100.35 100.55 100.7

100.85 100.85 100.85 100.8 100.65

100.55 100.55 100.5 100.45 100.4

100.37 100.35 100.3 100.25 100.25

100.25 100.25 100.25 100.25 100.25

100.25 100.25 100.2 100.15 100.15 100.13

Jan.

100.1 100.1 100.05 100.05 100.05

100.05 100. 05 100.05 100.05 100.05

100.05 100.0 100.0 99.95 99.95

99.95 99.95

100.0 100.15 100.15

100.25 100.25 100.3 100.3 100.35

100.3 100.25 100.25 100.2 100.2 100.2

Feb.

100.2 100.2 100.2 100.25 100.25

100.25 100.25 100.25 100.25 100.25

100.25 100.25 100. 25 100.25 100.25

100.25 100.25 100.25 100.3 100.35

100.35 100.4 100.4 100.4 100.38

100.65 100.65 100.75

Mar.

100.75 100.75 100.75 100.75 100.7

100.65 100.6 100.65 100.65 100. 65

100.65 100.6 100.55 100.55 100.52

100.5 100.5 100.4 100.35 100.35

100.4 100.45 100.48 100.55 100.55

100.55 100.55 100.55 100.52 100.5 100.5

Apr.

100.5 100.48 100.45 100.45 100. 45

100.42 100.4 100.45 100.55 100.55

100.52 100.5 100.48 100. 45 100.4

100.35 100.35 100.35 100.28 100.25

100.22 100.2 100.2 100.2 100.2

100.2 100.2 100.2 100.2 100.2

May

100.2 100.2 100.18 100.18 100.15

100. 15 100.15 100.1 100.1 100.1

100.1 100.05 100.05 100.05 100.05

100.05 100.05 100.05 100.05 100.05

100.0 100.0 100.0 99.95 99.95

99.95 99.95 99.95 99.95 99.95 99.95

June

99.95 99.95 99.95

100.0 100.0

100.0 100.0 100.0 99.98 99.95

99.95 99.95 99.95 99.95 99.95

100.0 99.98 99.95 99.95 99.95

99.92 99.9 99.9 99.9 99.9

99.9 99.88 99.85 99.85 99.85

July

99.85 99.85 99.8 99.75 99.7

99.65 99.6 99.58 99.55 99.48

99.45 99.4 99.35 99.3 99.25

99.25 99.2 99.2 99.15 99.1

99.1 99.05 99.05 99.05 99.05

99.0 99.0 98.95 98.95 98.9 98.9

Aug.

98.85 98.85 98.85 98.8 98.8

99.0 98.75 98.75 98.7 98.7

98.65 98.65 98.85 98.85 98.85

98,95 99.05 99.15 99.25 99.35

99.35 99.4

. 99.4 99.4 99.4

99.42 99.45 99.5 99.55 99.55 99.55

Sept.

99.5 99.5 99.5 99.5 99.5

99.55 99.65 99.75 99.95

100.75

100.75 99.85 99.85 99.75 99.7

99.7 99.65 99.65 99.7 99.65

99.65 99.65 99.65 99.65 99.65

99.65 99.65 99.7 99.7 99.7

WANAQUE RIVER AT GREENWOOD LAKE, N. J.

LOCATION. 600 feet below dam at outlet of Greenwood Lake at The Glens'Passaic County.

DRAINAGE AREA. 27 square miles (measured on State topographic maps). RECORDS AVAILABLE. May 13, 1919, to September 30, 1926. GAGE. Water-stage recorder on right bank 600 feet below dam; prior to April 1,

1926, a vertical staff gage at the same section but on left bank was used.Gage read and recorder inspected by employee of North Jersey DistrictWater Supply Commission.


DISCHABGE MEASUREMENTS. Made by wading.CHANNEL AND CONTEOL. Coarse gravel and boulders. Control is riffle of smallI boulders 200 feet below gage; probably permanent.EXTEEMES OF DiscHAEGE. Maximum stage recorded during year, 2.22 feet

December 6 and 7 (discharge, 187 second-feet); minimum stage, 0.15 footSeptember 30 (discharge, 5 ,seoond-feet).

1919-1926: Maximum stage recorded, 3.72 feet at 5 p. m. April 7, 1924(discharge, about 600 second-feet); minimum stage occurs whenever thegates at Greenwood Lake are closed and no water is passing over spillway.

ICE. Stage-discharge relation probably not affected by ice. REGULATION. Flow regulated by operation of sluice gates at the outlet of the

lake. See record for Greenwood Lake at The Glens, ACCURACY. Stage-discharge relation practically permanent. Rating curve well

defined. Staff gage read to hundredths twice daily. Daily dischargeascertained by applying mean daily gage height to rating table. Recordsgood.

COOPEEATION. Station maintained and gage-height record furnished by NorthJersey District Water Supply Commission.

The following discharge measurements were made: March 23, 1926: Gage height, 1.51 feet; discharge, 94 second-feet. March 24, 1926: Gage height, 1.59 feet; discharge, 98 second-feet. August 20, 1926: Gage height, 0.43 foot; discharge, 13.4 second-feet.

Daily discharge, in second-feet, of Wanaque River at Greenwood Lake, N. J., for the year ending September SO, 1926

Day

1 2... ............

1 -01 4:::::-:::".-:j*... .........« 7... ̂.. .........8... ........... _9...............10...............r 11... ............12...............13. ...........14.--..-.-.....-.15 :

16-. . .17 18....... .._19 20 . .

21 .22 23 24 25 ............

26....- ...27 28 29 ...........30 .. .01

Oct.

11

111111

1142424242

4242424242

4123111111

1111111111

111010101010

Nov.

1010999

99999

99101111

1543545458

5454545043

4143545050

Dec.

505876

114142

183183174150127

11497928172

6254504641

4146434037

343230272523

Jan.

201Q181820

2120202221

1918171616

1616183340

5058626254

504643403736

Feb.

4343424346

4650544641

3836333438

4139394358

6767676772

142166166

Mar.

150150150134120

102102127134127

114108978676

7262585462

7276869297

1029792867676

Apr.

8181768176

727281102102

10292867676

6262545046

4038383743

4341383836

May

33343328

2726242217

1716131415

1716151416

1312131010

888878

June

912161313

1212121111

10109911

109887

66667

77666

July

615384040

4040403939

3939393838

3736363422

2222222120

201912121213

Aug.

1515141414

1413131929

2930261414

1313131313

1313131313

131313121112

Sept.

1212121212

1212121211

1111111110

1010121211

108777

77765

NOTE. This table indicates discharge as regulated at Greenwood Lake. Discharge Sept. 1-7, 12, 19, 20, 22, 24, 26, 27, and 29, when recorder was not operating, estimated by graphic study of gage-height graph and similar graph of record for Wanaque River at Wanaque.

PASSAIC KIVEE BASIN 167

Monthly discharge of Wanaque River at Greenwood Lake, N. J., for the year endingSeptember SO, 1926


Month

April.. ........


Maximum

42 58

183 62

166 150 102

Minimum

10 9

23 16 33 54 36

Mean

21.2 28.6 75.6 30.5 59.5 98.0 64.1

Month

July . .

The year _


Maximum

36 16 40 30 12

183

Minimum

7 6 6

11 5

5

Mean

17.4 9.17' 28.7 15.4 9.97"

sai

NOTE. This table indicates discharge as regulated at outlet of Greenwood Lake.

WANAQUE RIVER AT WANAQUE, N. J.

LOCATION. 100 feet below Erie Railroad bridge and 400 feet below highway bridge in Wanaque, Passaic County.

DRAINAGE AREA. 91 square miles (measured on State topographic map).RECORDS AVAILABLE. December 16, 1903, to December 31, 1905; May 1, 1912,

to May 1, 1915; May 13, 1919, to September 30, 1926.GAGE. Water-stage recorder on left bank, 100 feet below railroad bridge;

installed April 2, 1922; inspected by engineer of North Jersey District Water Supply Commission.

DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Sand and fine gravel. Control is gravel riffle 50 feet

below gage.EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage

recorder, 4 feet at 9.30 p. m. November 13 (discharge, 1,030 second-feet); minimum stage, 0.34 foot 2 to 4 p. m. August 5 (discharge, 8 second-feet).

1903-1905; 1912-1915; 1919-1926: Maximum stage recorded, 8.35 feet July 22 or 23, 1919; determined by level from high-water marks (discharge, uncertain); minimum stage, 0.18 foot at 5 p. m. October 8, 1923 (discharge, 1.4 second-feet).

ICE. Stage-discharge relation occasionally affected by ice.REGULATION. Flow regulated by operation of sluice gates at Greenwood Lake

11 miles upstream. See record of Greenwood Lake at The Glens, for effect of this regulation.

Accuracy. Stage-discharge relation probably permanent. Rating curve well defined. Operation of water-stage recorder satisfactory except as noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table, except on days of considerable fluc tuation when the discharges were averaged for intervals of the day. Records good,

COOPERATION. Station maintained and gage-height record furnished by North, Jersey District Water Supply Commission.

The following discharge measurements were made:April 16, 1926: Gage height, 1.40 feet; discharge, 188 second-feet.August 20, 1926: Gage height, 0.92 foot; discharge, 76 second-feet.


Daily discharge, in second-feet, of Wanaque River at Wanaque, N. J., for the year ending September 80, 1926

Day

1 .......2 .... ...3...............4 ___ . _ . ....5 ............

6 ..... .... ...7 ... .... ...8..9 __ ......10

11 12 . 13 14 ...........15 -.-.... .

17 18........ ..19 20

21 ............22 23 24 25. _ ...

26 _27 28...............29 30 .31

Oct.

2626293542

7056515064

6565

5493

8680655648

413<3090

150

88615645

Nov.

5542414137

4542506444

40' 40

473426220

424340262234220

190177166148133

12615822016614ft

Dec.

161206342

522

680522

384332

304276

220206

100

174156145145

166188171140135

11476

93QA

78

Jan.

767Q

788088

9888fiQ6060

5048464646

4850

111363206

185

206170i ̂ ft

140120

110114

Feb.

20615013378156

150148133111100

9595100109182

177161153256318

248234206193304

820

465

Mar.

410465465358318

276342493384318

3J8290262234220

206185185188234

2762903043183(U

304290262234220234

Apr.

304

234304262

248248318410345

304276262248234

206188169153145

130126126

193

153

128128118

May

12111611110998

9188868276

7270669393

8888785861

6358585450

59515045

40

June

4678746151

4848544642

3836373848

5045363230

3027283133

3230282525

July

2322375051

5152515051

5451504850

56515154

3533333746

363330273730

Aug.

29. 28

272619

2223232331

374071

161234

27622013813588

6156726364

767656484n37

Sept.

3546593776

140111106354

5445444136

3336363633

313131O1

31

4438364140

NOTE. This table indicates discharge as regulated at Greenwood Lake. Staff gage readings used Oct. 1 to Nov. 12, when recorder was not in operation. Stage-discharge relation affected by ice Jan. 9-17, 24-29 and Feb. 10-13; no gage-height record Oct. 4, 11,12,18, 25, Nov. 1 and 8; daily discharge estimated by study of weather records and graphic study of gage-height record and comparison with similar study of record for Wanaque Kiver at Greenwood Lake.

Monthly discharge of Wanaque River at Wanaque, N. J., for the year endingSeptember SO, 1926


Month

October ..........


Maximum

220 473 680 363 820 493 410

Minimum

26 37 76 46 78

185 118

Mean

64.4 159 245 114 218 296 216

I

Month

July....... .

The year...


Maximum

12178 56

276 140

820

Minimum

40 25 22 19 31

-19

Mean

74.6 40.9 42.6 74.2 47.6

132

.NOTE. This table indicates discharge as regulated at Greenwood Lake.

PEQUANNOCK RIVER AT MACOPIN INTAKE DAM, N. J.

."LOCATION. At Macopin intake dam of the Newark waterworks, 3 miles aboveButler, Morris County.

IDBAINAGE AEEA. 63.7 square miles (measured on State topographic map). AVAILABLE. January 1, 1892, to September 30, 1926.


GAGES. Head on spillway at dam indicated by water-stage recorder in gatehouse. Water diverted measured by Venturi meter. Elevation of watersurface in various storage reservoirs indicated by staff gages. Gages read byemployees of bureau of water, city of Newark.

DETEKMINATION OP DISCHAKGE. Rating for spillway of intake dam determinedby constructing weir at head of pond and making a series of simultaneousobservations of head on the weir and dam. Daily discharge computed bybureau of water, city of Newark.

DIVEKSION. Water diverted from the stream at intake dam only. Diversionincluded in the records.

STOKAGE. Flow above dam regulated by several reservoirs. Gages in reservoirsread daily and storage correction computed in million gallons a month.No correction made for evaporation from reservoirs.

COOPEBATION. Daily discharge records and records of daily gage height in thevarious reservoirs furnished by the city of Newark, department of publicaffairs, bureau of water.

Daily discharge, in second-feet, of Pequannock River at Macopin intake dam, N. J., for the year ending September 30, 1926

Day

1. __ . __ ....2...............3. ___ ... _ ..4...............5 . _ .........."\/.. __ .........8...............9

10. _ ...........

11-.-.--... __ .12 _ ............13...............14......... _ ...15...............

16. ___ .........17....... ___ ..18...............19...............20. ___ . __ ....

21. ___ . ....22. ___ . ____ .23... __ ........24. ___ . ___ ..25...............

26...............27..--..-........28. ______ . _29.... _____ ...30...............31. _ . ___ ....

Oct.

2.2

9 9

3.4

1.7

Nov.

2.2

1819764

1016741257.1

2020

Dee.

69149141

160123855629

.6

113.9

24157.1

11127.16.3

9.6122.93.4

Jan.

2.9

45

1 Q

2.6

2.22.9

.62.2

1.5.6

376523

17158.7111.7

3.7

7.1129.0

Feb.

15.8.8

14

33149.07.16.3

5.61219

182182

1411172625

2921129.665

14912499

Mar.

9510180208.5

3382128124118

12499736951

2419243295

155160177200197

200212186147128155

Apr.

179151136-154143

127136206275256

2301901109389

7377494644

1.25.93.99.052

5125

8.5

May

149.31.9

23

,9

3.7

1.9

June

3.92.2

2.2

.9

July

2.2

.6

Aug.

2312

2.8

Sept.

0.6

12

32*12

.8

.6

NOTE. Above table indicates flow over dam only.


Monthly discharge of Pequannock River at Macopin intake dam, N. J., for the year ending September 80, 1926


Month

April.........................

July .. . ..-


Observed

Maximum

3.4 181 160 65

182 212 275

23 3.9 2.2

23 32

275

Minimum

0 0 0 0 0 8.5 0 0 0 0 0 0

0

Mean

0.31 20.8 30.3 7.51

39.3 107 97.4

1.76 .31 .09

1.22 1.93

25.5


Mean

40.7 177 184 84

154 241 173 47.5

39.2 15.4 62.4 56.1

106

Per square mile

0.64 2.78 2.89 1.32 2.42 3.78 2.72 .75 .62 .242 .98 .88

1.66

Run-off in inches

0.74 3.10 3.33 1.52 2.52 4.36 3.04 .86 .69 .28

1.13 .98

22.55


SADDLE RIVER AT IODI, N. J.

LOCATION. At highway bridge 1 mile above Lodi, Bergen County, and 2% miles, above mouth of river.DBAINAGE ABEA. 55 square miles (measured on State topographic map).RECOBDS AVAILABLE. September 21, 1923, to September 30, 1926.GAGE. Water-stage recorder on left bank at upstream end of bridge; inspected

by W. C. Thorne.DISCHABGE MEASUBEMENTS. Made from bridge or by wading.CHANNEL AND CONTBOL. Channel of coarse gravel and rock. Control is at

riffle 75 feet below gage.EXTREMES OP DISCHABGE. Maximum stage during year from water-stage

recorder, 4.38 feet at 4 p. m. February 26 (discharge, 741 second-feet); minimum stage, 1.48 feet at 8.30 a. m. July 1 (discharge, 7 second-feet; stage- discharge relation affected by manipulation of dam).

1923-1926: Maximum stage recorded, 5.44 feet at 4 p. m. April 7, 1924 (discharge, about 1,280 second-feet); minimum stage, 1.49 feet at 5.30 p. m. November 22, 1923 (discharge, 5.3 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Daily distribution of flow affected by small water-power plants

at points upstream.ACCURACY. Stage-discharge relation subject to occasional changes, due to repairs

made on small dam 400 feet below control; also affected by ice in winter. Rating curves fairly well defined above 10 second-feet. Operation of water- stage recorder satisfactory except for a few short periods. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection from recorder charts or, for days of considerable fluctuation, by averaging discharge for intervals of the day. Records fair.


Discharge measurements of Saddle River at Lodi, N. J., during the year endingSeptember SO,

Date

Oct. 24.. ........Do.........Do. ........Do.........

Nov. 20.. .....Dec. 15.. _ ....

Gage height

Feet 1.601.621.771 81

2.172.14

Dis charge

Sec.-ft. 11.114.524.2

7066

Date

Jan. 19-.. ......Feb. 18.. .......Mar. 17---.

Do. --------

Gage height

Feet 2.76

-2.392.382.232.062.06

Dis charge

Sec.-ft. 185107109856062

Date

July 21. ........

Do..

Gage height

Feet 2.001.802.422.441.81

Dis charge

Sec.-ft. 5429

10611530.2

< Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Saddle River at Lodi, N. J., for the year endingSeptember SO, 1926

Day

1 . .. .... ..2.. .......3. 4.. ........ ..5.. .............

6...............7. ..............8 _ ........9...............10..... ......... .

11. .. ....... ..12.... ...........13...............14 15

16, ...........17 _ .. .. 18 ..19...............20 .

21 . 22...............23 24...............25 ...........

26...............27 ...........28...............29...............30.... ........31

Oct.

1919303857

6040322832

2525242646

6655474036

3333343275

13213071544647

Nov.

48 48

463633

4450485048

4039110281175

1281871429073

6660575552

5163999971

Dec.

6394136252266

19919914210894

8181838070

6563625757

711011188971

585044424040

Jan.

40-44465060

68665548

46

38

394859

232

118118

1 60

Feb.

112124784363

7574

65

90

128387

( 130

517505200

Mar.

220281370281160

200340585

IOU

108109119128

175164153153153

132153128106100106

Apr.

164175122175212

132117142225199

1321061009590

9085817976

76787978122

14299848581

May

7678716663

6059575453

5351506482

7981716068

5951494842

403740393940

June

4657534541

3940514639

3232323436

5039353130

2828293033

3733303027

July

1821232423

2727272324

3125252525

3234304034

2923202754

563027232629

Aug.

2424232220

2019181817

16194498154

11612811110388

4840424142

707146373229

Sept.

2960814940

811451727456

5141363433

3131303231

2928273433

4238344138

NOTE. Stage-discharge relation affected by ice Dec. 26-31, Jan. 10-14, 23-31, Feb. 6, 8-18, and 21-25; gage-height record missing Nov. 1-4, 13, Feb. 28, Mar. 1, 5-7, 9-16, and Apr. 13-16. Daily discharge for these periods estimated by study of precipitation records, discharge measurement, gage-height graph, and comparison with record for Whippany River at Morristown.

63436 30 12


Monthly discharge of Saddle River at Lodi, N. J., for the year ending September SO,


Month

April....... ................................

July...........................................

September .....................................


Maximum

132281

* 266 232 517 585 225 82 57 56

154 172

585

Minimum

19 33 40 38 43

100 76 37 27 18 16 27

16

Mean

46.2 79.6 96.0 66.8

128 181 117 57.4 37.1 28.5 51.0 49.4

77.9

Per square mile

0.840 1.45 1.75 1.21 2.33 3.29 2.13 1.04 .675 .518 .927 .898

1.42

Run-off ininches

0.97 1.62 2.02 1.40 2.43 3.79 2.38 1.20 .75 .60

1.07 1.00

19.23

ELIZABETH RIVER BASIN /ELIZABETH RIVER AT ELIZABETH, W. J.

LOCATION. Just above Westfield Avenue Bridge in Elizabeth, Union County, and 2}i miles above mouth.

DRAINAGE AREA. 20 square miles (measured on State topographic map).RECORDS AVAILABLE. October 5, 1921, to September 30, 1926.GAGE. Water-stage recorder on left bank 10 feet above dam; inspected by

Lewis Gallagher.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CONTROL. Concrete dam, crest 48.5 feet long, at gage-height elevation 5.00

feet, with sluice gate 24 inches in diameter, elevation of invert about gage height 0.3 foot. When the sluice gate is open and flowing part full, a rifHe of small stone below dam becomes the control.

EXTREMES OF DISCHARGE. Maximum stage during year from water-stage recorder, 8.06 feet at 11 p. m. September 6 (discharge, about 1,170 second- feet).

1921-1926: Maximum stage recorded, 8.18 feet at midnight July 31, 1925 (discharge, about 1,260 second-feet).

DIVERSIONS. Elizabethtown Water Co. diverts water from Elizabeth River above this point, at the Ursina Lake pumping station, and through wells at its Hummock pumping station. Corrections for these diversions have been applied to the monthly table.

ACCURACY. Stage-discharge relation over spillway and through sluice gate prob ably permanent. Rating curve well defined below 150 second-feet. Opera tion of waterstage recorder satisfactory. Daily discharge ascertained by applying mean daily gage height to rating table; on days of considerable fluctuation, discharge for several periods of the day are averaged. Records good.

Discharge measurements of Elizabeth River at Elizabeth, N. J., during the year ending September 80, 1926

Date

Oct. 25 _ ......Nov. 21........

Gageheight

Feet 6.671.24

Dis charge

Sec.-ft. "388

63.2

Date

Nov. 21 _ .....Mar. 18.-

Gage height

Feet 1.245.22

Dis charge

Sec.-ft. 63.3

"14.2

Date

Aug. 19 ..

Gageheight

Feet 5.24

Dis charge

Sec.-ft. -16.5

« Sluice gate closed; some leakage through gate. * Sluice gate open.

ELIZABETH RIVER BASIN 173

Daily discharge, in second-feet, of Elizabeth River at Elizabeth, N. J., for the year ending September SO, 1926

Day

1.. ...... _ ....2...............2... ...... ......4..... .......f> _ ............

«-.- -7 8...............9...............

10... .......... ..

11 12 .13 14 15.. ..........

16...............17... .........18. .. __ .19...............20 .

21.. ........22....... _ .....23....... ........24. 25-...... ...

26...............27....... ........28.. ....... .29... ... .........30..... ......... .31

Oct.

0.4

116.4

27

3.23.83.2.7

1.3

1.21.21.2

1231

5.76.15.75.05.7

5.07.17.912124

207.17.17.15.76.4

Nov.

7.15.77.17.913

197.9212313

8.2261172044

36219.03.63.3

3.33.33.63.69.4

1143171112

Dec.

4722

22027061

4924202116

161416159.9

117.66.97.69.9

14249.96.28.3

9.18.37.65.64.44.4

Jan.

6.27.68.38.3

11

6.26.25.65.66.9

6.25.04.44.44.4

3.83.836248.3

13398.39.16.9

5.65.65.64.44.449

Feb.

287.66.26.27.6

6.28.37.65.66.2

6.27.65.68.8

34

271317

13749

29221716

162

2267951

Mar.

6798442723

222101033928

2320212016

1614151112

1716202017

282318161637

Apr.

2918252718

1517462416

1614141212

12 129.11113

7.6117.66.9

35

1311 .129.99.1

May

1111118.36.9

8.37.65.67.25.6

6.25.65.62711

32151.75.013

1.92.42.84.35.7

2.31.01.22.04.09.7

June

139.07.51.42.3

5.5113.91.21.0

1.46.09.65.95.3

2.62.62.22.62.2

2.23.3346.31.2

214.81.65.03.0

July

0.72.64.93.63.6

3.62.62.22.23.8

5.83.63.65.4

21

344.840635.4

4.83.63.69.3

261

201085

10012

Aug.

178.66.55.95.9

5.35.37.95.35.9

4.780945066

4662321812

1038182626

16127.9

108.65.9

Sept.

4.776169.4

38

256200302024

1618141610

109.47.91113

1313131313

1814132416

NOTE. This table does not include diversions. Sluice gate open Nov. 5 to Dec. 7, May 24 to June 14, June 29, July 1, 31, Aug. 1, and Sept. 20-30; the discharge through the sluice gate of these periods have been applied in the table. No gage heights July 26-30 and Sept. 7-11; discharge for these periods estimated from study of precipitation records, hydrograph, and hydrograph of flow on Rahway River at Rahway.

Monthly discharge of Elizabeth River at Elizabeth, N. J., for the year endingSeptember 30, 1926


Month

January ____________

Marchl ____________

June.. _____________July.-

The year ................


Observed

Maximum

124 117 270 49

226 210 46 32 34

261 94

256

270

Minimum

0 3.3 4.4 3.8 5.6 11 6.9 1.0 1.0 .7

4.7 4.7

0

Mean

11.0 17.7 31.2 10.4 35.6 34.1 16.1 7.80 5.95

21.1 23.1 31.6

20.4

Corrected for diversion

Mean

22:1 25.7 40.4 21.4 45.2 42.7 24.5 16.7 15.8 31.9 32.2 41.4

29.9

Per square mile

1.10 1.28 2.02 1.07 2.26 2.14 1.22 .835 .790

1.60 1.61 2.07

1.50

Run-off in inches

1.27 1.43 2.33 1.23 2.35 2.47 1.36 .96 .88

1.84 1.86 2.31

20.29


RAHWAY RIVER BASIN

EAHWAY RIVER AT RAHWAY, N. 3.

LOCATION. At Church Street Bridge in Rahway, Union County, half a mile above mouth of Robinsons Branch of Rahway River.

DRAINAGE AREA. 41 square miles (measured on State topographic map).RECORDS AVAILABLE. July 10, 1908, to April 29, 1915; October 1, 1921, to

September 30, 1926.GAGE. Vertical staff attached to tree on right bank 40 feet below bridge; read

by W. M. Ritchie.DISCHARGE MEASUREMENTS. Made by wading or from highway bridge.CHANNEL AND CONTROL. Channel of fine gravel; control at head of riffle 300 feet

below gage.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.22 feet at 8

a. m. September 7 (discharge, 984 second-feet); minimum stage, 0.46 foot at 6.30 p. m. July 23 (discharge, 5 second-feet).

1908-1915, 1921-1926: Maximum stage estimated from hydrograph, 5.1 feet at 2 p. m. July 9, 1924 (discharge, about 1,100 second-feet; stage af fected by backwater from brush on control); minimum stage recorded, 0.0 foot December 1, 1912 (discharge uncertain).

ICE. Stage-discharge relation not seriously affected by ice.DIVERSIONS. The following water companies divert water from Rahway River

above Rahway: Orange Water Co., South Orange waterworks (wells), Short Hills Water Co. (wells), Springfield station of Elizabethtown Water Co. (wells), and Rahway waterworks. The total flow diverted is about 17 second- feet and is included in the monthly table.

ACCURACY. Stage-discharge relation not permanent. Standard rating curve fairly well defined. Gage read to hundredths twice a day. Daily discharge ascertained by applying variable correction to mean daily gage height and then applying corrected gage height to rating table. Variable correction determined from periodic discharge measurements. Records fair.

»Discharge measurements of Rahway River at Rahway, N. J., during the year ending

September 30, 1926

Date

Oct. 23- . ....Nov. 19. .......

Gage height

Feet "0.74"1.06

».84».98

Dis charge

Sec.-ft. 7.2

41.425.440.8

Date

Feb. 17-.....-..

Gage height

Feet 1.09.89.84.84

Dis charge

Sec.-ft. 5837.228.228.8

Date

July 21. ........

Sept. 15.....

Gage height

Feet 0.58'.60

<il.06.76

Dis charge

Sec.-ft. 11.011.35518.7

0 Sod dam on control causing backwater.5 Dam on control almost gone.c Left channel partly obstructed; center and right channels clear.* Control appeared open except for a little obstruction in left channel.

Daily discharge, in second-feet, of Rahway River at Rahway, N. J., for the year ending September 30, 1986

Day

1... ------.---..2. ...........3 -.. ...4... ............5... .

7-..--.--.-.....8- ....9...............10 ..

Oct.

77

2012391498812

Nov.

28222212172528257616

Dec.

3418

133605433172107705037

Jan.

8

131410

2316131412

Feb.

110402258352019191553

Mar.

13328223091733821868016288

Apr.

96503788473737629453

May

16161614131315131312

June

16331712131312161113

July

6799911118' 7

Aug.

25171310998977

Sept.

9336419211629052967980

RARITAN RIVER BASIN 175

Daily discharge, in second-feet, of Rahway River at Rahway, N. J,, for the year ending September 30, 1926 Continued

Day

11 _ ... ___12 . ........ ...13... ............14...............15... ............

16 ...........17...............18 . 19 ...........20... ............

21 ...........22...............23 ...........24 ...........25...............

26- 27 ...........28 ............29 ...........30... ............31 ............

Oct.

8877

61

1625131110

9879

218

1334239292530

Nov.

1817

28211442

11465323023

1319

1511

1122672416

Dec.

1633342622

2221201618

2450342220

18141313118

Jan.

101391112

111216

10142

29122422216

1515222222OO

Feb.

2515141843

706439183268

10464503961

680433162

Mar.

7061553938

3532324242

5547

6147

538648373234

Apr.

3932333025

2322222219

1918181848

2821182018

May

1212132217

6176312331

2216151413

131212131316

June

1110161112

11111099

910543914

2222121011

July

979712

471398915

118614

183

133221211

23039

Aug.

611

21882124

76255914724

1622221544

43221512139

Sept.

4231242219

1817171617

1414131424

1612152215

NOTE. This table does not include diversions. Discharge Jan. 30, Apr. 18, and May 22 estimated from study of gage-height graph.

Monthly discharge of Rahway River at Rahway, N. J., for the year endingSeptember SO, 1926


Month

April..........................

June ______________July...........................


Observed

Maximum

218 282 605 122 680 680 96 76 54

230 255 905

905

Minimum

7 11 8 8

14 32 18 12 9 6 6 9

6

Mean

27.5 40.6 68.2 23.6 97.2 96.5 36.5 19.3 15.6 31.3 41.3 68.3

46.8

Corrected for diversion

Mean

45.2 57.1 85.2 40.7

115 113 52.5 36.5 33.3 49.9 58.9 86.4

64.1

Per square mile

1.10 1.39 2.08 .993

2.80 2.76 1.28 .890 .812

1.22 1.44 2.11

1.56

Run-ofl in inches

1.27 1.55 2.40 1.14 2.92 3.18 1.43 1.03 .91

1.41 1.66 2.35

21.25

RARITAN RIVER BASIN

SOUTH BRANCH OF BABITAN RIVER NEAR HIGH BRIDGE, N. J.

LOCATION. 1 mile above High Bridge, Hunterdon. County, and 4 miles abovemouth of Spruce Run.

DRAINAGE AREA. 65 square miles (measured on topographic map). RECORDS AVAILABLE. February 24, 1919, to September 30, 1926. GAGE. Water-stage recorder on left bank just above large pine tree 1 mile above

High Bridge; inspected by engineer of Taylor-Wharton Iron & Steel Co.


DISCHARGE MEASUREMENTS. Made by wading or from highway bridge one-third mile upstream.

CHANNEL AND CONTROL. Channel very rough with many boulders. Control is well-defined riffle of rock and boulders 100 feet below gage; probably per manent.

EXTREMES OF DISCHARGE. Maximum stage during year from water-stage re corder, 8.62 feet at 10 p. m. March 7 (discharge, 1,120 second-feet); minimum stage, 5.03 feet at 7 p. m. July 8 (discharge, 26 second-feet).

1919-1926: Maximum stage recorded, 10.97 feet at 10.30 a. m. February 2, 1922 (discharge, about 3,600 second-feet); minimum stage, 4.80 feet at 6.30 a. m. October 3, 1921 (discharge, about 9 second-feet).

ICE. Stage-discharge relation seriously affected by ice.REGULATION. Daily distribution of flow affected by small water-power plants-

at points upstream.ACCURACT. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined. Operation of water-stage recorder satisfactory. Daily discharge ascertained by use of discharge integrator. Records fair.

The following discharge measurements were made:February 4, 1926: Gage height, 7.03 feet; discharge, 59 second-feet. (Stager

discharge relation affected by ice.)April 1, 1926: Gage height, 6.09 feet; discharge, 149 second-feet. June 22, 1926: Gage height, 5.28 feet; discharge, 40.6 second-feet.

Daily discharge, in second-feet, of South Branch of Raritan River near High Bridge,. N. /., for the year ending September 80, 1926

Day

1... ...... ......2..... ...3...............4..... ..........5... . _ ... _

6...............7...............8...............9.. ..........10 ............

11.. ...-......12........... ...13...............14... ............15...............

16 ............17 .............18... ............19........... ...20 ............

21...............22..... ... ...23...............24...............25...............

26...............27 ...........28... ............29 ...........30- ..........31

Oct.

4143585981

6558454961

52464851102

76

69fin55

52525757320

22012096888988

Nov.

8790867774

101909311887

8091

492200146

316187151144133

133124122109105

106171192130112

Dec.

122145298407258

308217191182166

152153149138127

126123111

110

150124106104

9796

1 90

Jan.

oU

97

102947673

145

132126117

inn

Feb.

1269485

90

2955483nn

181135125109399

702317189

Mar.

205308217146127

113503549194158

142132124110112

10397100110

170

130109107117

Apr.

148121113137116

108106188227139

122114106103102

9390878584

77787478103

9178839176

May

7772717164

6460625357

5957547069

6368595658

5752495349

494744444045

June

638376,5850

4453685445

44444345105

7253484440

4039444869

6552484541

July

3939373835

4653433639

3942373738

4739378655

40374047178

1087760689251

Aug.

4545463837

3637353535

3469134120114

1212171078669

6357666771

726253475045

Sept.

4587ISO-70'71

250-172"1048391

73.62"666054

57555148-53

5050484650

5053527266

NOTE. Stage-discharge relation affected by ice Dec. 28-31, Jan. 1-4, 10-19, 22, 24-31, Feb. 1, and 4-17; no record of stage Nov. 20, 21, Mar. 20-27, and July 25-30. Discharge for these periods estimated by study of discharge measurements, weather records, hydrographic comparison with hydrographs of flow on South Branch of Earitan Eiver at Stanton and Musconetcong Eiver near Bloomsbury.


Monthly discharge of South Branch of Raritan River near High Bridge, N. J. t for the year ending September SO, 1926


Month

October _ _____________ . ..........November _____ ________ ............

April........ -.-.-.....-.-..-..........-...

June..... __ ___ ___ _____ . .....July........... ................................

September..... ...............................

The vear.. ___ ____________ .


Maximum

320 492 407

702 549 227

77 105 178 217 250

702

Minimum

4174

97 74 40 39 35 34 45

34

Mean

78.2 138 153 99.4

174 173 107 57.8 53.8 53.5 68.2 74.0

102

Persquare mile

1.20 2.12 2.35 1.53 2.68 2.66 1.65 .889 .828 .823

1.05 1.14

1.57

Run-off in inches

1.38. 2.3& 2.71 1.76- 2.79 3.07 1.84 1.02- .92 .95

1.21 1.2T

21. 28-

SOUTH BRANCH OF EARITAH RIVER AT STANTOH, H. J.

LOCATION. At highway bridge near Lehigh Valley Railroad station in Stanton,. Hunterdon County, half a mile above mouth of Prescott Brook and 5 miles below mouth of Cakepoulin Creek.

DRAINAGE AREA. 147 square miles (measured on topographic map).RECORDS AVAILABLE. July 2, 1903, to December 31, 1906; July 1, 1919, to-

September 30, 1926.GAGE. Water-stage recorder on right bank, 5 feet below bridge; inspected by

W. B. Smith.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Bed and banks of gravel. Banks are overflowed at

high stages. Control is slight riffle 100 feet below bridge.EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage

recorder, 8.05 feet at 7.30 p. m. February 25 (discharge, about 4,220 second- feet); minimum stage, 1.76 feet at 9 a. m. October 1 (discharge, about 21 second-feet).

1903-1906; 1919-1926: Maximum stage recorded, 10.5 feet October 9,, 1903 (discharge not determined); minimum stage, 1.76 feet at 9 a. m. October 1, 1925 (discharge, about 21 second-feet).

ICE. Stagerdischarge relation affected by ice.REGULATION. Distribution of flow affected by small water-power plants at

points upstream.ACCURACY. Stage-discharge relation probably permanent, except as affected

by ice. Rating curve well defined between 40 and 700 second-feet. Daily discharge ascertained by use of discharge integrator or by applying to- rating table mean daily gage height, as determined by inspection of recorder charts, corrected for ice effect during winter. Records good.

Discharge measurements of South Branch of Raritan River at Stanton, N. J., during the year ending September SO, 1926

Date

Feb. 4... ....

June 22 .........

Gage height

Feet 3.20

3.602.09

Dis charge

Sec.-ft. 11650249.7

Date

July 20 _ ......

Qage height

Feet 2.209 4.H

Dis charge

See.-ft. 6300

Date

Aug. 17.. __ ...Sept. 18... .....

Qage height

Fed 3.862.43

Dis charge

Sec.-ft. 594

93-



Daily discharge, in second-feet, of South Branch of Raritan River at Stanton, N. J., for the year ending September SO, 1926

Day

I.... 2.. . ........... .3 __ 4 . .......... .5... ....... .....

6--. .......... -7.... ...........8 _ ............9 10. .......... .

11... .........12.... ...........13...............14...............15...............

16 ............17. ..........18 ..........19.. ....... . .20... ...... ......

21.... ...........22 23... ............24...............25

26...............27 28.. ..........29... ............30. ...........31...............

Oct.

7677

151125200

144117107108141

11899

101100250

163176146141124

117112116125

1 060

622370261228212

Nov.

204206IQfi

180164

218206914

2601QQ

174OftO

1,390498qcn

677410331312294

277261

231217

214

370245217

Dec.

00 K

8651,080665

715EOfl

430410

331OQ1

277261

245245231220212

277OQQ

208191

2011QQ

190200220

Jan.

220oon239228220

190171167150140

130120110ICO

100100200?flfl977

220190170150

140130

130160200

Feb.

180

100100110

120 ion

110110100

100inn100100240

500240600

1,500800

500360280217

1 f^dfl

1,910

390

Mar.

<?QBKQA

OQft

977

2611,420i ^n,3789ft7

99Q

209196196

183179

174182203

223O0£

OQI

239

225193185209

Apr.

215OAO

010

190q.17

442979

23291 Q

201395185

177170154

147

1401QQ

1401Q£

168145137155i4n

May

132128124122117

107

10799on

(K

87112

10811296107106

9887888886

807680736386

June

10018412411084

8284119ORCO

727071?75147

18688797364

6559759280

8780925755

July

V)50-47si53

6076675247

6460584759

84665610585

66564494

qofi

142866871221110

Aug.

10389786856

5547565057

46525804340260

3001,000460240190

163176171181205

194156139122116110

Sept.

991912691511 5fi

517419

23020491 ft

168148148132120

121120111111107

106100104104103

11899113155135

NOTE. Stage-discharge relation affected by ice Dec. 19, 28-31, Jan. 1, 2, 5, 6, 9-19, 22-31, and Feb. 1-23; no gage-height record Aug. 14-20. Discharge for these periods estimated by study of one discharge meas urement, observer's notes, weather records, and hydrographic comparison with other stations in Raritan Basin.

Monthly discharge of South Branch of Raritan River at Stanton, N. J., for the year ending September 30, 1926


Month

October . .. ... . .

July..... ..................................


Maximum

1, 060 1,390 1,080

700 1,910 1,420

442 132 147 326

1,000 517

1,910

Minimum

76 164 190 100 100 172 137 63 55 44 46 99

44

Mean

197 309 340 186 404 325 197 99.7 89.6 81.2

212 162

216

Persquare mile

1.34 2.10 2.31 1.27 2.75 2.21 1.34 .678 .610 .552

1.44 1.10

1.47

Run-off in inches

l.«2.r2.( !.<< 2.J 2. 1.,

! . i. i.19.

EAEITAN RIVER BASIN 179EARITAN EIVER AT MANVIIIE, N. J.

LOCATION. At highway bridge between Manville and Finderne, Somerset County, 1% miles above mouth of Millstone River and 4^ miles below con fluence of North and South Branches of Baritan Eiver.

DRAINAGE AREA. 490 square miles (measured on State topographic map).RECORDS AVAILABLE. June 27, 1903, to March 31, 1907; August 10, 1908, to

April 30, 1915; August 19, 1921, to September 30, 1926.GAGE. Water-stage recorder on left bank 5 feet downstream from bridge; in

spected by Edward McBride.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Red sandstone on left side, sand and gravel on right

side; permanent except as affected by vegetal growth during summer. Banks are overflowed at very high stages.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage re corder, 12.25 feet at 3 a. m. September 7 (discharge, about 13,200 second - feet; stage-discharge relation affected by grass in channel); minimum stage, 3.20 feet at 6 p. m. July 2 (discharge, about 59 second-feet; stage-discharge relation affected by grass in channel).

1903-1907, 1921-1926: Maximum stage recorded, 15.9 feet October 10, 1903 (discharge, about 25,000 second-feet); minimum stage, 3.24 feet at 9 p. m. September 19, 1923 (discharge, about 36 second-feet).

ICE. Stage-discharge relation affected by ice.DIVERSIONS. Johns-Manville Co. diverts about 2 second-feet from the river at

a point about one-fourth mile above gage. This is not included in the records.

REGULATION. Daily distribution of flow affected by water powers at Somerville and other points upstream.

ACCURACY. Stage-discharge relation permanent except as affected by the growth, of grass on the control during summer and by ice during winter. Standard rating curve well defined between 300 and 10,000 second-feet. Daily dis-' charge ascertained by applying to rating table mean daily gage height cor rected for effect of grass or ice on control. Operation of water-stage recorder satisfactory. Records fair.

Discharge measurements of Raritan River at Manville, N. J., during the year endingSeptember SO, 1926

Date

Oct. 23-.. Nov. 17.... ..Dec. 5 __ . .....Feb. 12

Gage height

Feet "4.76"3.98-5.12-5.97'4.09

Dis charge

Sec.-ft. 892301

1,4202,500

283

Date

Feb. 28 ..... .

Apr. 16..

Gage height

Feet

4.624. 10

4.20"3.84

Dis charge

Sec.-ft. 1,940

8484.31

484192

Date

July 20. ...Aug. 18 Sept. 17....

Gage height

Feet «3.60«3.82«4.81«3.96

Dis charge

Sec.-ft. 138218992305

« Stage-discharge relation affected by grass in channel. <> Stage-discharge relation affected by ice.

180 SUEFACE WATEE SUPPLY, 1926, PART I

Daily discharge) in second-feet, of Raritan River at Manville, N. /., for the year ending September SO, 1926

Day

1 . .... .2 ____ ........3.... ...........4 5

6_.._ ....... .7 , . . ,.8...............9.... .... ....10. .

11. . ........12 ___ . ........IS...............14.... ........15.... ........ ...

16.. . .......... 17. . . 18..... .....19 . 20.

21 22...... .......23... .... ........24 . 25

26 27 28....... ........29 ............30...............31. ...........

Oct.

192182264380472

44n289241237289

259233217221860

506736533432359

310289279284

4,220

3,1401,300910756620610-

Nov.

590533506440394

489542498756551

472464

6,4002,2501,300

2,7601,6001,130960860

767714650570498

498789

1,130692K7fl

Dec.

580767

2,7604,3402,760

3,1401,9901,4801,3001,080

910860800714620

570570515

524

560692650479

472

481300320140

380380

Jan.

400409432387402

440380320300280

280260260260260

260

5504 Kt)f\

QQfl

7372,480

600700550

420340320360460550

Feb.

900668464284434

420380360360340

340340380440

1,090

9 <{&{}1,4701,0205,2003,750

1,480960736610

3,330

9 (inn3,000i 4nn

Mar.

1,4201,9901,420852737

6304,1905,2501,270910

800671680485515

464432424440472

590580650860736

860960789620570692

Apr.

1,130800703

1,020800

681630

1,3602,1001,240

960800681600560

481440380346304

280260260260400

340280240280260

May

240240230200200

200220200200200

213199203254315

321387269245254

221189173170161

150147147150147144

June

192327237196179

155164182199155

147129134147150

241196164158139

129124155176167

142147147144107

July

105103112107105

124132132129124

124122127119117

139170139182196

173134139167860

489241173185778346

Aug.

321284221185167

142137142137127

124269

2,9001,360746

1,3003,9001,130800590

448456448551960

736524472366315269

Sept.

233315800424346

3,2807,2001,540910

1,020

681515456380340

327304294264269

250237229237245

233250229294321

NOTE. Shifting-control method used Oct. 1 to Dec. 26, Feb. 26-28, and Apr. 16 to Sept. 30. Stage-dis charge relation affected by ice Dec. 27, Jan. 6-18, 23-28, Feb. 6-8; no gage-height record Dec. 28-31, Jan. 1, JJ9-31, Feb. 1 and 9-13; discharge for these periods estimated by study of discharge measurements, weather records, and comparison with records of flow at the other stations in Raritan Basin.

Monthly discharge of Raritan River at Manville, N. J., for the year endingSeptember 30, 1926


Month

December ____________________ _.

June _________________________July...........................................


Maximum

4,220 6,400 4,340 4,520 9,000 5,250 2,100

387 327 860

3,900 7,200

9,000

Minimum

182 394 300 260 284 424 260 144 107 103 124 229

103

Mean

647 1,010 1,030

619 1,490 1,030

629 212 168 203 662 747

698

Persquare mile

1.32 2.06 2.10 1.26 3.04 2.10 1.28 .433 .343 .414

1.35 1.52

1.42

Run-off in inches

1.52 2.30 2.42 1.45 3.17 2.42 1.43 .50 .38 .48

1.56 1.70

19.33

BABITAN RIVER BASIN 181

NORTH BRANCH OF EAEITAN EIVER NEAR FAB HILLS, N. J.

LOCATION. At dam of Somerset Lake & Game Club, 2 miles north of Far Hills, Somerset County, and 2 miles above mouth of Peapack Brook.

DRAINAGE AREA. 26 square miles (measured on State-topographic map).EECORDS AVAILABLE. February 15, 1922, to September 30, 1926.GAGE. Water-stage recorder on left bank 75 feet above dam; inspected by John

Bobinson and Vincent A. Thorpe.DISCHARGE MEASUREMENTS. Made by wading 200 feet below dam.CONTROL. Masonry dam with flat crest having low-water notch 26 feet long

with crest at elevation of gage height 1.696 feet. Bemainder of spillway 137 feet long with crest at elevation of gage height 2.204 feet.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 4.01 feet at 9 p. m. January 18 (discharge, about 1,230 second-feet); minimum stage, 1.87 feet on several days in August (discharge, 7.6 second- feet).

1922-1926: Maximum stage estimated from hydrograph, 5.1 feet at midnight March 7, 1922 (discharge not determined); minimum stage re corded, 1.79 feet at 9.30 a. m. August 27, 1923 (discharge, 4 second-feet).

ICE. Stage-discharge relation rarely affected by ice.DIVERSIONS. Small turbine takes water from the pond above dam for operation

of a pump. This turbine is operating continuously and uses about 2 second- feet. This diversion is included in the following tables of daily and monthly discharge.

ACCURACY. Stage-discharge relation permanent. Bating curve well defined below 150 second-feet. Daily discharge ascertained by applying to rating table mean daily gage height as determined from recorder sheets or, for days of considerable fluctuation, by averaging discharge for intervals of the day. Becords good.

Discharge measurements of North Branch of Raritan River near Far Hills, N. J., during the year ending September 30, 1926

Date

Nov. 11-.. Feb. 28.. ........Febr27:.... ........

Gage height

Feet 2.19

"2.70 "2.48

Discharge

River

Sec.-ft. 27.1

210 110

Tailrace

Sec.-ft. 2.00

Date

Apr. 1.. ............Sept. 13. ...........

Gage height

Feet 2.35 2.11

Discharge

River

Sec.-jl. 62.4 20.2

Tailrace

Sec.-ft. 1.41 1.76

" In places the ice was less than a foot upstream from dam.

Daily discharge, in second-feet, of North Branch of Raritan River near Far Hills, N. J., for the year ending September 80, 1926

Day

1. .- .-2. .. ... ..3 __ _____ .4...............5... .... .

6....... .....7.... ...........8........ _ ....9...............10...............

Oct.

1414282638

[ 22

Nov.

3838323034

5543455936

Dec.

5255118182110

14489787568

Jan.

3234343440

4136303030

Feb.

7540342940

3636343034

Mar.

84138865955

56316

7562

Apr.

6849496155

52491109768

May

3029302828

2828272525

June

2126272218

1819292218

July

11109.59.58.9

131512109.5

Aug.

141312118.9

8.98.58.57.67.6

Sept.

9.538392026

105101403443


Daily discharge, in second-feet, of North Branch of Raritan River near Far Hills, N. J., for the year ending September 30, 1926 Continued

Day

11 _____ .. .12...............13...............14...............15...............

16...............17...............18...............19..... .......20...............

21...............22 .......... ...23...............24...............25...............

26...............27... . ...........28...............29...............30...............31...............

Oct.

2421181762

3238302525

20182021188

714741343436

Nov.

2829

2466875

13662555552

4947434141

4085684541

.Dec.

6568655955

5552494747

52654945AQ

402531363432

Jan.

2730242525

2525

293

59

5794414338

3638282028

Feb.

30303453188

894546284114

65555549237

31012171

Mar.

}"39

42

52

5552555552

555549454355

Apr.

5952494943

4140383634

3438413647

3834363834

May

2524244538

3036272429

2422212019

181718181618

June

1616202040

2720181614

1414162116

1414131211

July

12108.98.59.5

1313144723

14109.51688

231412112116

Aug.

7.611452436

4182302518

1618201818

191616151210

Sept.

2926241918

1616.16-1616

1*14141617

16.16162222

NOTE. Discharge estimated Oct. 6-10, Mar. 11-13, and 15-19, when recorder was not operating properly, based on study of gage-height graph, weather records, and comparison with record of flow of Whippany River at Morristown.

Monthly discharge of North Branch of Raritan River near Far Hills, N. J., for the year ending September SO, 1926


Month

October.. __ . _________________

December. ___________________

April..........................................

July. . ....... - . _-_._

September... __ . _____________ ...


Maximum

188 246 182 293 310 316 110 45 40 88 82

105

316

Minimum

14 28 25 20 29 39 34 16 11 8.5 7.6 9.5

7.6

Mean

33.957.2 64.0 48.6 80.9 68.9 49.2 25.5 19.1 16.2 19.3 27.3

42.2

Per square mile

1.30 2.20 2.46 1.87 3.11 2.65 1.89 .981 .735 .623 .742

1.05

1.62

Run-off in inches

1.50 2.46. 2.84 2. Ifr 3.24 3.06. 2.11 1.13 .82- .72 .86

1.17

22.07

NORTH BRANCH OF RARITAN RIVER AT MILLTOWN, N. J.

LOCATION. At Milltown, Somerset County, \% miles above junction of Northand South Branches of Raritan River.

DEAINAGE ABBA. 190 square miles (measured on State topographic map). RECORDS AVAILABLE. June 14, 1923, to September 30, 1926. GAGE. Inclined staff on right bank 300 feet above highway bridge; read by

Joseph Van Fleet.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading. CHANNEL AND CONTROL. Channel of clay and fine gravel. Control is remains of

foundation of an old dam.


EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.48 feet at 4.10 p. m. March 7 (discharge not determined); minimum stage recorded, 2.00 feet October 6, 7, January 29, July 14 (discharge, 26 second-feet).

1922-1926: Maximum stage, 9.5 feet (from floodmarks) at 1 a. m. April 7, 1924 (discharge not determined); minimum stage recorded, 1.95 feet at 9 a. m. December 2, 1924 (discharge, about 22 second-feet).

.REGULATION. Slight diurnal fluctuation due to small water-power plants upstream.

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined between 30 and 1,600 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

Discharge measurements of North Branch of Raritan River at Milltown, N. J., during the year ending September SO, 1926

Date

Teb. 5. _ ......-Feb. 27. __ ....

Gage height

Feet «2.92

3.38

Dis charge

Sec.-ft. 188703

Date

Apr. 1 Sept. 17-..

Gage height

Feet 2.982.42

Dis charge

Sec.-ft. 386109

Date Gage height

Feet 2.39

Dis charge

Sec.-ft. 98


Daily discharge, in second-feet, of North Branch of Raritan River at Milltown, N. J., for the year ending September 80, 1926

Day

1...... ...2.. .............3...... ......4 __ . __ . .....5

6.-.-.- _____ .T. ..............8 ... ..... ....9.... ...........10.

11 12 _ ............13 14.. ...... _ .15....... ........

16 17 18 . 19 20

21..... _ . _ ...22 ___ ...23.-. ........24 .......25.

26 .. 27. ______ ..28 29 ... ___ ....30 ......31

Oct.

747495121396

6928102108162

959510279550

200349185157145

128115125115

1,240550220210237266

Nov.

25522021014195

136108162304210

205180

3,400590445

1,400755445396369

329297278243226

232515445310

Dec.

291369

1,5101,290845

990630550515445

369390369316304

284272291272243

278390266291220

23285

130

Jan.

130130150190210

21018595

90

95291710356

316800278310

I 240I

7979

232

Feb.

515237180157

I 160

1,400480445

1, 500

755

Mar.

515800410362261

2912,740

890410369

304261272255226

170149162175195

220210278304

9Q7

329266210onn

Apr.

403243226369249

226232890630396

323278

232232

170145162"ME

132121118121170

136121

118

May

121108959282

7979857774

746965136118

121153115907Q

8279696561

K4

565858CO

61

June

65118' 987461

6061957763

4747585867

10272696152

47476387

47

ZA

4747

July

4447423430

3958443532

3942332835

50393913654

<u463690670

1287Q

6567

3107Q

Aug.

7974494439

3639363432

42278670445304

376845369266180

136153157145232

91 H

136102877Q

63

Sept.

54102243128112

349755410297383

22017013610298

Qfl

102797969

6565

697474

696769102

NOTE. Stage-discharge relation affected by ice Dec. 29-31, Jan. 1-3, 9-16, 25-27, Feb. 5-15, and 19-26; discharge estimated from study of one discharge measurement, observer's notes, weather records, graph of gage-height record, and by comparison with record near Far Hills.


Monthly discharge of North Branch of Raritan River at Milltown, N. J., for the year ending September SO, 1926


Month

July September .....................................


Maximum

3,760 3,400 1,510

800

2,740 890 153 118 670 845 755

Minimum

28 95 85

149 112 52 47 28 32 54

28

Mean

327 439 414 210 650 390 242 84.1 65.4 81.4

185 158

268

Persquare mile

1.72 2.31 2.18 1.11 3.42 2.05 1.27 .443 .344 .428 .974 .832

1.41

Run-off in inches

1.98 2.58 2.51 1.28 3.56 2.36 1.42 .51 .38 .49

1.12 .93

19.12

BLACK RIVER NEAR POTTERSVILLE, N. J.

LOCATION. 1 mile above highway bridge and former gaging station.at Potters-ville, Somerset County, and 8 miles above mouth of Rockaway Creek.

DRAINAGE AREA. 33 square miles (measured on State topographic map). RECORDS AVAILABLE. June 27, 1922, to September 30, 1926; at Pottersville 1

mile downstream, November 8, 1921, to June 30, 1922. GAGE. Water-stage recorder on right bank; installed June 27, 1922; inspected

by Theodore Bush. DISCHARGE MEASUREMENTS. Made by wading or from highway bridge 1 mile

downstream. CHANNEL AND CONTROL. Gravel and boulders, very rough. Control is riffle of

boulders just below gage; probably permanent. EXTREMES OF DISCHARGE^ Maximum stage during year, from water-stage

recorder, 3.49 feet at 4 p. m. January 18 (discharge, about 710 second-feet);minimum stage, 0.92 foot at 9 p. m. September 13 (discharge, 7.4 second- feet).

1921-1926: Maximum stage recorded, 3.76 feet at noon July 1, 1922(discharge, about 880 second-feet); minimum stage, 0.79 foot at 6 a. m.August 4, 1924 (discharge, 4 second-feet).

ICE. Stage-discharge relation affected by ice. REGULATION. Daily fluctuations occasionally caused by operations at small

mills upstream. ACCURACY. Stage-discharge relation probably permanent, except when affected

by ice. Rating curve well defined below 300 second-feet. Daily dischargeascertained by applying to rating table mean daily gage height as determined

, from inspection of recorder charts, with correction for effect of ice duringwinter. Records fair.

Discharge measurements of Black River near Pottersville, N. J., during the year ending September SO, 1926

Date

Nov. 22-.-.. _ .22..

Gage height

Feet 1.581.58

Dis charge

Sec.-ft. 5658

Date

Feb. 26 .Apr. 7..........

Gage height

Feet 2.411.56

Dis charge

Sec.-ft. 244

53

Date

Sept. 13-- 13...

Gage height

Feet 0.94.93

Dis charge

See.-ft. 6.96.8

KAEITAN EIVER BASIN 185

Daily discharge, in second-feet, of Black River near Pottersville, N. J., for the year ending September 80, 1926

Day

1 .-. .....2...._._..__.__.3...............4...............5... ............

6...............7-...-..-.......8...............9...............10...............

11. ________12... _ .... _ ..13...............14. _ ...........15... ___ .......

16.. __ ........17...............18..............19....... __ ....20._...........__

21. ___ .........22..............23........ _ ....24.... ___ .....25......... j.....

26...............27. _ . ____ ...28.. __ .. _ ....29... _ ... ......30...............31...............

Oct.

1617262435

3230292725

2424222441

3537373428

24222223111

916967666050

Nov.

4340373532

39384n4640

37381378875

11495817566

6055514643

4276736763

Dec.

697395120

100

737061

5858534948

58696355

45

Jan.

.I 4ft1 "

4143

46

34

3030178142

I

42

Feb.

6043

33

6&

90

90807675188

241158158

Mar.

1261361169778

73220198147126

10486765754

4642414449

5457636967

676761555151

Apr.

5864576054

5351788876

7269605045

4239363533

3131313134

3434323434

May

3433262524

2424242524

2323223439

4645362625

2423212120

201919191919

June

2227292924

2125313025

2019202139

4344412820

1817182020

2020181615

July

1212121212

1217151313

1314121212

1615222525

23171429138

695553544635

Aug.

3227231917

151514

44

37343132

343027262320

Sept.

[ 36

10286696764

5344232623

2222222019

1918181819

2220223030

NOTE. Stage-discharge relation affected by ice Dec. 25, 30, 31, Jan. 1-3, 7-15, 20-31, Feb. 3-6, 8-12; recorder not operating properly Dec. 5-12, 26-29, Feb. 13-20, July 2, 3, Aug. 9-21, and Sept. 1-5. Daily discharge for these periods based on study of weather records, gage-height graph, and comparison with record of gage heights on Whippany River at Morristown.

Monthly discharge of Black River near Pottersville, N. J., for the year endingSeptember 80, 1926


Month

April.........................................May. ______________________

July...........................................


Maximum

111 137

178 241 220

88 46 44

138

102

241

Minimum

16 32

30

41 31 1915 12

18

12

Mean

37.8 59.1 70.5 46.5 79.5 83.2 47.9 26.0 24.7 26.8 33.2 35.3

47.3

Persquare mile

1.15 1.79 2.14 1.41 2.41 2.52 1.45 .788 .748 .812

1.01 1.07

1.43

Run-off in inches

1.33 2.00 2.47 1.63 2.51 2,90 1.62 .91 .83 .94

1.16 1.19

19.49

186 StJEPACE WATER SUPPLY, 1926, PART I

MILLSTONE RIVER AT BLACKWELLS MILLS, ff. J.

LOCATION. At highway bridge in Blackwells Mills, Somerset County, a quarter of a mile below mouth of Middlebrush Brook, 1% miles above Millstone, and 5 miles above mouth of Millstone River.

DEAINAGE AEEA. 258 square miles (measured on State topographic map).RECORDS AVAILABLE. August 4, 1921, to September 30, 1926. A station was

maintained at Millstone 1% miles downstream from June 28, 1903, to De cember 31, 1904; June 7, 1912, to April 30, 1915 (unpublished record of gage heights only).

GAGE. Vertical staff in two sections on downstream side of left bridge abut ment; read by Alex. Barna.

DISCHAEGE MEASUREMENTS. Made by wading or from highway bridge at Millstone.

CHANNEL AND CONTEOL. Channel of clay. Banks are overflowed at high stages. Control is foundation of old stone and timber dam 100 feet downstream from gage; gradually disintegrating.

EXTREMES OF DISCHARGE. Maximum stage during year, estimated from hydrograph, 11.0 feet at 6 a. m. September 7 (discharge, about 6,200 second- feet); minimum stage recorded, 0.14 foot at 6 a. m. July 10 (discharge, 32 second-feet).

1921-1926: Maximum stage estimated from hydrograph, 11.0 feet April 7, 1924, and September 7, 1926 (discharge, about 6,200 second-feet); mini mum stage recorded, 0.0 foot all day September 16, 1923 (discharge about 5 second-feet).

ICE. Stage-discharge relation affected by ice.DIVERSIONS. Delaware & Raritan Canal takes water from Delaware River and

flows northeastward to Raritan River. It passes along right bank of Mill stone River for 15 miles above gaging station and for 5 miles below. Canal is above river at all points and loses water to river by leakage, seepage, and by discharge over spillways.

REGULATIONS. Carnegie Lake and several small mills above gage slightly affect distribution of flow.

ACCURACY. Stage-discharge relation not permanent. Standard rating curve fairly well defined; variable correction for shifting control determined from periodic discharge measurements. Staff gage read to hundredths twice daily. Daily discharge ascertained by applying corrected mean daily gage height to base rating. Records fair.

Discharge measurements of Millstone River at Blackwells Mills, N. J., during the year ending September 80, 1926

Date

Oct. 23... Nov 17. ........Dec. 11..........Jan. 20... ...... .

Gage height

Feel «1.20

2.191.671.88

Dis charge

Sec.-ft. 93

522294394

Date

Feb. 13... ......

Apr. 16 -

Gage height

Feet "1.16

1 ^fi

1.13

Dis charge

Sec.-ft. 123947

128

Date

July 20.. .......Aug. 18-. ...

Gage height

Feet

1 19

1.80

Dis charge

Sec.-Jt.

105

0 Stage-discharge relation affected by debris on control. b Stage-discharge relation affected by ice.


Daily discharge, in second-feet, of Millstone River o< Blackwells Mills, 2V. /., for the year ending September 80, 1926

Day

1 _ ... __ . _2.... ........3... __ ........4.......... _ ..5.... _ . _ .

6.. ....... ...7..... .......8 9 _ . ____ ...10 .

11...... ...12... ____ .....13... .. .......14...............15. .......

16...... .........17... ........18 .19 ___ ..........20. .. .....

21 __ .22.......... .....23...............24. __ ..........26........ .......

26 ...27 _ . _ . __ ..28... ............2930... . _ ....31..... ..........

Oct.

5848487595

9090989173

761096656113

111279226177116

111939696

1,380

1.110388326251226226

Nov.

21019418S182160

226176200191210

157188

2,3801,210

502

1,110502367306269

251230220200182

173326288269233

Dec.

200147

1,3301,5801,330

1,1401.07C775575388

326326306251220

197167191197207

188210288269223

180160140120130140

Jan.

131118110110110

118144170142120

120110110107129

140126131

1,030575

306525830725502

346233170162157197

Feb.

940725368326269

173213251160140

130130140150725

775775

1,1102,6802,680

1,840550367367

1,430

4 0003^0701,730

Mar.

1,0301,070775575388

3261,2501,900434200

411388306288269

269269251226251

269306326326367

434479434367326346

Apr.

479434388414367

306288456675525

411346288233251

251

203165176

165160126131226

251220203200197

May

185170149140152

124122135129140

131135131135176

233456367269269

251165135133i4n

135131118124122144

June

207411233200179

144149160147

144

135126124122122

11411811410292

968993269165

14012010210387

July

7678676360

6382674944

6858718188

85848110999

80765969120

1549779154575200

Aug.

12416010810070

7563506865

5272

2,0801,290885

600434411388326

326346306306388

411367326251185154

Sept.

133179306207167

2694,9001,780600560

3672882331Q7167

154144133122118

12210999100109

133116102100111

NOTE. Discharge computed by shifting-control method Oct. 17-24, July 6 to Sept. 5, and Sept. 12-30; based on monthly discharge measurements and study of comparison with record of flow of Lawrence Brook at Patricks Corner. Stage-discharge relation aflected by ice Dec. 26-31, Jan. 3-5, 10-13, and Feb. 9-14; discharge estimated by study of discharge measurements, weather records, gage-height graph, and com parison with hydrograph of flow on Lawrence Brook.

Monthly discharge of Millstone River at Blackwells Mills, N. J., for the year endingSeptember SO, 1936

Month

November.. ... December _ ...

April __ ..


Maximum

1,380 2,380 1,580 1,030 4,000 1,900

675

Minimum

48 157 120 107 130 200 126

Mean

206 377 418 258 937 479 292

Month

July-.. ...

September. ....

The year-


Maximum

456 411 575

2,080 4,900

4,900

Minimum

118 87 44 50 99

44

Mean

172 147 101 348 404

841

NOTE. Because of leakage, seepage, and waste water from Delaware & Raritan Canal, this record does not represent the natural flow from the basin.

GREEN BROOK AT BOUNDBROOK, N. J.

LOCATION. Near State highway bridge at Boundbrook, Middlesex County,half a< mile above mouth.

DRAINAGE AREA. 49 square miles (measured on State topographic map). RECORDS AVAILABLE. June 12, 1923, to September 30, 1926. GAGE. Vertical staff fastened to willow tree on left bank 300 feet below bridge;

read by Joseph Efinger.63435 30 13


DISCHARGE MEASUREMENTS. Made by wading or from bridge.CHANNEL AND CONTROL. Channel of sand and fine gravel. Control is riffle of

gravel 200 feet below gage; not permanent, also affected by growth of grass during summer.

DIVERSIONS. Green Brook'receives'the sewage of Plainfield 3 miles upstream. A well field of the Elizabethtown Water Co., Consolidated, is located along the stream just above station; a well field of Middlesex Water Co. and a second field of the Elizabethtown Water Co., Consolidated, are also located in the drainage area above station.

REGULATION. Daily distribution of flow slightly affected by water power above gage.

ACCURACY. Stage-discharge relation not permanent. Standard rating curve for indirect determination of discharge not well defined. Gage read to hundredths twice daily. Daily discharge ascertained by applying effective mean daily gage height to rating table; corrections for obtaining effective gage heights determined by comparing periodic discharge measurement with base rating. Daily discharge too uncertain to publish. Monthly records fair.

Discharge measurements of Green Brook at Boundbrook, N. J., during the year endingSeptember SO, 1926

Date

Oct. 23-. Nov. 19 __ ....Dec. 11 ___ ..

Gage

Feet 0.991.481.481.44

Dis charge

Sec.-ft. 16.3666969

Date

Feb. 12 .Mar. 16.. Apr. 15.. . ...May 21.'.... _ .

Gage height

Feet « 1.45

1.481.141.33

Dis charge

Sec.-ft. 547941.454

Date

July 20.. .......Aug. 18 Sept. 17. . _ .

height

Feet 1.061.242.891.36

Dis charge

Sec.-ft. 16.618.5

22144.8

«Stage-discharge relation affected by ice.

Monthly discharge of Green Brook at Boundbrook, N. /., for the year endingSeptember 30, 1926


Month .

November ___________________

March ___ . __________________April . . .............

July... ......... ......... ......................

September... ________ ,. ................

; The year. _ . ______________


Maximum

206 365 294 172 810 194 96 79 48 20

440 1,100

1,100

Minimum

14 19 35 35 45 52 31 30 14 8

14 32

8

Mean

34.3 66.8 75.0 54.9

130 85.2 53.6 43.7 25.5 14.8 86.9

109

64.5

Per square mile

0.700 1.36 1.53 1.12 2.65 1.74 1.09 .892 .520 .302

1.77 2.22

1.32

Eun-ofE in inches

a si1.62 L76 1.29a 762.01 1.221.03 .58 .35

2.04 2.48

17.85

NOTE. No correction made for Plainfield sewage nor for water diverted through the various well fields in the basin, ;:: , '

RABITAN RIVER BASIN 189LAWRENCE BROOK AT PATRICKS CORNER, N. J.

LOCATION. Near highway bridge at Patricks Corner, Middlesex County, 3 miles southwest of Milltown, seven-eighths mile above Beaver Brook Dam and 6J4 miles above mouth of Lawrence Brook.

DRAINAGE AREA. 29 square miles (measured on State topographic map).RECORDS AVAILABLE. June 21, 1922, to December 31, 1926, when station was

discontinued. Replaced by station at Farrington Dam.GAGE. Water-stage recorder on right bank 150 feet above highway bridge;

inspected by Henry Patrick.DISCHARGE MEASUREMENTS. Made by wading or from highway bridge.CHANNEL AND CONTROL. Banks high and channel fairly straight. Control is a

concrete weir; 5.02 feet of the crest of the control are at elevation of gage height 1.99 feet and remaining 19.95 feet are at elevation of gage height 2.47 feet. The top of the wing walls is at elevation of gage height 4.00 feet. This control is submerged and a channel control becomes effective at very high stages. Prior to June, 1925, the control was the sill of an old wooden dam at the site of the present weir.

EXTREMES OF. DISCHARGE. Maximum stage during period October 1, 1925, to December 31, 1926, from water-stage recorder, 8.40 feet at 2 a. m. September 7, 1926 (discharge, about 1,280 second-feet); minimum stage, 2.24 feet July 18, 1926 (discharge, 1.7 second-feet).

1922-1926: Maximum stage, from high-water mark, 8.70 feet at 3 a. m. April 7, 1924 (discharge uncertain; stage-discharge relation was affected by brush jam below gage); minimum discharge recorded, 0.4 second-foot August 27, 1923, and several times in October, 1924; stage-discharge relation

!. affected by grass on control).ICE. Stage-discharge relation occasionally affected by ice.REGULATION. Distribution of flow affected by water power above station.ACCURACY. Stage-discharge relation permanent except when affected by grass

and brush in channel. Rating curves fairly well defined. Operation of, water-stage recorder satisfactory. Daily discharge ascertained by use of discharge integrator or by averaging discharge for intervals of the day.

; Records fair.

Discharge measurements of Lawrence Brook at Patricks Corner, N. J., during the years ending September 80, 1925 and

Date

1925Pec. 4... .......

Dec, 5..:.... _

1926.Feb. 26. . _ .

Do.........

Oage height

Feel 3.943.883.28

4.744.74

Dis charge

Sec.-ft. 169161

74

331332

Date

1926 Mar. 8 _ . __ .

Do

July 13 ____ .Do..

Gage height

Feet 4.003.893.282.792.472. 51

Dis charge

Sec.-ft. 185

1707423.44.685.82

Date

1926 July 13.... July 21.. .......Nov. 1 __ . ....Nov. 30.,.. ..

Do........ .

height

Feet 2.702.50

"4.243.443.472.89

Dis charge

See.-ft. 16.05.53

15295

10129.9

1 Stage-discharge relation affected by newly constructed Farrington Dam 3 miles below.


Daily discharge, in second-feet, of Lawrence Brook at Patricks Corner, N. «/"., for the years ending September 30, 1925 and 1926

Day

1925-26 i 2.......... __ .3 .........

5.. ...... ....

6 __ . __ .....7...............8-... .....9...............10

11.. __ ........12 _ . __ . ......13 ... ....14 15 . ...

16 17 . ......18...... .........19 20 - __ .

21 .. .......22 23 24 25 .. .

26 . 27. 28 29. ..30 . 31

Day

1926 1 ............23 ___ __ ...f4

6,... ........7 ____ . ___ .8 .... ........o

10 __ ..... __ .

11 . 12...............13. __ . _____14 _____ . .....15 ..

Oct.

2.93.73.82.86.2

6.07.18.54.44.8

2.63.84.23.76.3

5.820119.27.7

778

1461

481716161010

Nov.

10

169 e

8.6

101411

12

1014

1534131

4933221414

2311111113

12

3116

Oct

5.4.

6.6.

129.7.4.

5.7.7.7.6.

I

1

84669

6

411

fi467

)ec.

1ft17%7784en

3090

12

202218138 0

9 81967.77.3

9 fi2123129 n

87767.08 1

No

1

1

Jj

1

tf8,4

310.

41f,1

111111

7.

50R457SO24

S3IS?,?,6fi50

583228?fim

in.

7 07,4fi ?,7 S

9 n

687 87 Sfi 9

fifiRH 5R 8

n ?,i 0?,ii?:

\

*

\

fi

?,

?l

?,

?l

fi

D

Feb

83,31%1

12111

1112,4.

45,52

17(168'54C3<

15f

3&19(13(

ec.

5733272419

1919192023

23m234254

FI^7t2

^4=i1

^?I{*

i

?)

J7iIi

ti)

<

Mar.

96109835142

371241918159

4539302022

2319191920

2224284030

375040322633

16. 17.. .18 ...19. .....20

21 -22 23 24 .25 .

26- ....27 ......28 29 ......JO 51

Apr.

4930293225

2120306440

2317231616

1314111112

11119.89.8

37

2613121321

Day

1926

May

139.3

131315

12107.85.88.8

9.68.79.3

1112

1767281929

1610101110

108.38.75.24.67.1

.

Ji

1?1

111

111

me

33fi9 38 8

7 00?:

1

8

679 ?4 36 08 4

7 0fi 66 fi7 0 i 0

6 0 i 51)«<4

7,77 8S87 41 3

C

14

?1118

5»?ft?

IS

Ju

54

1 9fi9

7477

1?

??fi64

34253

43???

653353

ct.

7,?,fi, 7fi 8fi5

0fifi7R

ifi7,nnn

iy

0,0,3f.

.ft

,4,098

3fi

.04fi

84?!?,4

fi8399

3?,010fi

J>

Aug

? 3.333.

332.34,

3,W

30299fin51fi4505423

1622422736

4026

710105.

Cov.

9012056

10859

3530W2«23

348236?,572

^

5686fi

8fi4?,\

()

*

*

Sept.

5.814231613

228578

854231

2212118.89.3

10118.35.87.2

6.87.36.36.38.3

7.09.27.97.98.3

Dec.

3424191313

1416181617

12265

130150110100

NOTE. -Stage-discharge relation affected by ice Dec. 26-29,1925, Jan. 11-13,25,26,29, Feb. 6,10-13,1926; gage-height record missing Oct. 21-23,1925, June 10, Oct. 22, Dec. 28-31,1926. Discharge for these periods estimated from study of weather records and hydrographic comparison with stations on Fassaic River near Millington and Whippany River at Morristown.

NAVESINK RIVER BASIN 191

Monthly discharge of Lawrence Brook at Patricks Corner, N. J., for the years ending September SO, 1925 and 1926

Month

1926-26

July...........................................

September __________ . .................

The year. ________________

1926

Discharge hi second-feet

Maximum

61 153 177 104 384 191 64 67 23 12

302 578

578

130 150 150

Minimum

2.6 8.6 6 5.0

10 19 9.8 4.6 3.3 2.2 2.4 5.8

2.2

4.1 18 13

Mean

10.922.5 26.2 18.7 69.1 48.1 22.0 13.5 9.11 4.83

32.6 40.6

26.2

20.2 53.9 41.5

Persquare mile

0.376 .776 .903 .645

2.38 1.66 .759 .466 .314 .167

1.12 1.40

.903

0.697 1.86 1.43

^Run-off in inches

0.43 .87

1.04 .74

2.48 1.91 .85 .54 .35 .19

1.29 1.56

12.25

0.80 2.08 1.65

NAVESINK RIVER BASIN

SWIMMING EWER NEAR BED BANK, N. J.

LOCATION. At dam of Tintern Manor Water Co., 3 miles above Red Bank, Monmouth County, and mouth of river.

DRAINAGE AREA. 48 square miles (measured on State topographic map).RECORDS AVAILABLE.: July 28, 1922, to September 30, 1926.GAGE. Water-stage recorder on right bank 100 feet above end of dam; inspected

by employees of Tintern Manor Water Co.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading below

dam.CONTROL. Dam of stone and concrete, with spillway 148 feet long. In cross

section the spillway has a flat top 7 feet wide with downstream edge 1 foot higher than upstream. Sometimes sand bags are placed on the spillway during the summer. There are two 36-inch "blow-off" sluice gates at dam and one 18-inch "blow-off" sluice gate at pumping station.

DETERMINATION OP DISCHARGE. Discharge over spillway and through all sluice gates determined from rating curves based on current-meter measurements. Diversion measured by piston-displacement method.

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 3.42 feet at 11.30 p. m. February 25 (discharge, about 2,590 second- feet; over spillway only).

1922-1926: Maximum stage recorded, occurred February 25, 1926, as given above.

DIVERSIONS. Water diverted from dam to Newman Springs pumping station of the Tintern Manor Water Co. is included in tables of daily and monthly discharge.

STORAGE. The flow is slightly affected by storage in reservoir. Monthly table corrected for this by use of an approximate capacity curve.


ACCURACY. Spillway rating permanent; fairly well defined between $ and 600 second-feet. Daily discharge over spillway ascertained by applying to rating table mean daily gage height as determined by inspection from recorder sheets. On days of considerable fluctuation, discharge for intervals of the day were averaged. The storage correction is so small that possible errors in the capacity curve will not affect the total results. Records good.

COOPERATION. Station maintained in cooperation with and diversion figures furnished by Tintern Manor Water Co.

The following discharge measurements of the flow over spillway were made: March: 16, 1926: Gage height, 1.086 feet; discharge, 45.7 second-feet. July 21, 1926: Gage height, 0.981 foot; discharge, 17.9 second-feet.

Daily discharge, in second-feet, of Swimming' River near Red Bank, N. J., for the year ending September SO, 1926

Day

i.. -----2.---.- -------3. -. ---4. -

7 ...... ...8-- -----9

10.

11. 12- -.- .....13 - 14. 15 --------

16 ---------17 18 .--..- .19.. 20-Jw

21 22 23 24 25 --------

26 27 28.. 29.. 30 31

Oct.

20223332

403229

99

25242454

544.0

3428

262525on

89

TO4

908036OK

25

Nov.

3334333734

40363647OQ

3642

24112960

CO

5846

43

3O

394n3737

3651KC

30

40

Dec.

3939

150416

12894766865

5755575350

40.

39tya

363Q

4.3

46461139

40Of|

ftf*qeOK

35

Jan.

35404447KA

KQ

40Af\

44

374/1

273734

0.70401

1STSI

fiQ

181752

66KK

CO

21

78

Feb.

3101367762

67655945

46

5259110

120

Q7

520

14891

65488

OOA

19Q

Mar.

1201651268072

64168267103£4

sn7167«n63

63AO606378CO

70747466

74Qfi

74676278

Apr.

ill74669170

626266

09

7066626260

5655KO

5353

535050w

100

C7Artcq

Kfl

CO

May

5352494ft

4743434039

443940'5371

w504Q

5047

4.0

47474041

00

36403707

40

June

5755413840

4040414137

3132373636

3233OA

2926

97

2740<M

40

340400

07

27

July

2722282625

3233252520

3222243442

13367387140

3332283155

40309ft90

3735

Aug.

3537322800

OO

27272624

09

37367116124

718800

117:57

47 !54

. 474757

68FJ7

400707

32

Sept.

2964874240

50145755449

4239393431

3134oo

2831

3026303533

3029Q4

3900

NOTE. Daily discharge includes diversion to pumping station. No gage-height record Oct. 5-7, 21-24, Dec. 15-25, Feb. 3-6, and May 16-21; discharge over spillway for these periods estimated by graphic study of record for Lawrence Brook at Patricks Corner and precipitation.

ABSECON CREEK BASIN 193

Monthly discharge of Swimming River near Red Bunk, N. J., for the year endingSeptember SO, 1926


Month

November .^. .................

January ,

April...... ...._...._..._._._.May _____ . __ .. ........June..... .....................July... ........................

The year ................


Observed

Maximum

124 241 416 181

1,070 267 116 71 93

133 367 145

1,070

Minimum

20 33 30 21 41 60 50 36 26 20 23 26

20

Mean

40.2 51.4 69.6 57.5

175 88.1 66.1 45.5 37.8 36.9 61.0 43.3

63.7


Mean

40.3 51.5 69.8 57.9

175 88.0 65.9 45.5 37.6 37.0 61.0 43. 4

63.7

Per square mile

0.840 1.07 1.45 1.21 3.65 1.83 1.37 .948 .783 .771

1.27 .904

1,33

Run-off in inches

0.97 1.19 1.67 1.40 3.80 2.11 1.53 1.09 .87 .89

1.46 1.01

17.99

NOTE. Observed discharge is discharge over spillway of dam and that diverted to pumping station No correction made for evaporation.

ABSECON CHEEK BASIN

ABSECON CREEK AT ABSECOKT, IT, J, _

LOCATION. At dam of Atlantic City Water Department, 1 mile west of Absecon, Atlantic County, and 3 miles above mouth.

DRAINAGE ABBA. 16.6 square miles (measured on State topographic map).EECOHDS AVAILABLE. December 1, 1923, to September 30, 1926.DETERMINATION OF DISCHARGE. Daily discharge is computed by adding the

flow over spillway and through a 42-inch wood-stave pipe line 9,930 feet long through which water flows by gravity from reservoir to pumping sta tion, and an estimated flow that is diverted to a duck farm on left bank of the creek just below weir. Correction for gain or loss in storage in the reservoir is made to monthly discharge in order to derive the natural flow.

The discharge over the spillway and through the sluice gates and leakage is determined from the record made by a water-stage recorder at right end of a weir 48.5 feet long and 2.5 feet high with a 2-inch plank crest and located in channel of the creek 30 feet below spillway. The weir is sub merged for a few hours each day by high tide, but the periods of submergence are easily recognized from the appearance of the gage-height graph.

Discharge through the 42-inch pipe line is determined from the loss of head at a 24-inch gate in the pipe line 100 feet below the intake in the reservoir. The head above the gate is indicated by the elevation of the water surface in the reservoir which is measured by an automatic water- stage recorder in a stilling box near the intake, prior to July 10 a hook gage was read twice a day. The head below the 24-inch gate is determined by a water-stage recorder in the caretakers' shelter 100 feet below gate. This water-stage recorder is over a 12-inch float tank which is connected with the pipe line by %-inch pipe. The two gages are set at the same datum.

Corrections for gain or loss in storage are based upon elevations in reser voir. Gages read and recorders inspected by J. E. Reilly, an employee of Atlantic City Water Department.


DISCHARGE MEASUREMENTS. Measurements for rating the weir are made from highway bridge 10 feet below weir or by wading. Discharge measurements for rating pipe line are made with a Pitot tube 150 feet below 24-inch gate.

REGULATION. Flow is regulated by storage in the reservoir.ACCURACT. Records fair.COOPERATION. Stations installed and maintained in cooperation with Atlantic

City Water Department, Mr. L. Van Gilder, chief engineer.

Measurements &f discharge over weir on Absecon Creek at Absecon, N. /., during the year ending September SO, 1926

Date

Oct. I..........Do..........Do..........

Oct. 2...........

Gage height

Fed 2.572.372.2352.320

Dis charge

Sec.-ft.

28.59.3

22.8

Date

Oct. 2...........Do..........

Oct. 28. ___ ..Do..........

Gage height

Feet 2.3482.2582.2062.205

Dis charge

Sec.-ft. 27.512.47.076.24

Date

Oct. 28.... ......Do.........

Apr. 13 .........

Gage height

Feet 2.1702.1702.29

Dis charge

Sec.-ft, 3.843.83

18.0

Measurements of discharge through pipe line on Absecon Creek at Absecon, N. J.t during the year ending September SO, 1926

Date

Apr. 22... __ ......Do .............

Apr. 23.............Do .............Do...... .......

July 16 .............Do __ .........

Reservoir gage

height

Feet11.69511.6911. 69511.69511. 69511.4411.41

Pipeline gage

height

Feet11. 38211.54511.43011.6411. 16710.9410. 874

Dis charge

Sec.-ft..18.912.717.58.6

26.423.924 0

Date

July 16 Do .............Do ..Do ....... ...Do.............Do ....... ..

Reservoir gage

height

Feet11.3911.38211.4011.39411.40711.41

Pipeline gage

height

Feet10.8710.8810.9711.03511. 21311.305

Dis charge

Sec.-ft.23.723.422.620.815.411.7

NOTE. Measurements made with Pitot tubes 250 feet below intake.

Daily discharge, in second-feet, of Absecon Creek at Absecon, N. J., for the year ending September 30, 1926

Day

l ..........2 __ ........ ...3 ............4 _ . _ ........5 _ ... .

6 ............7 __ ........ ...8 ............9 ____ ........10... ............

11 .... ......12...............13...............14 _ ............15... __ ........

16 __ .. _ ....17 _ . _ ... _ .-18 _ ......... ...19 . 10........ .......

Oct.

1411129.013

1314161517

1414141415

1516141515

Nov.

2023152691

2017132118

1816262621

2421161819

Dec.

1818202013

11131*1

1314

1717161615

1514151210

Jan.

1313141616

1515151616

16

151516

1515151717

Feb.

2727253223

2825242324

242019

25

26252497

29

Mar.

2123242422

2224293422

2222242422

2124212121

Apr.

2723232823

2121212523

2323212327

2327211820

May

1819212518

1919202018

2220171619

2748422929

June

1920222020

1921232524

2221192222

2121222120

July

2321212222

2223232324

2324222022

4437282824

Aug.

2324242424

2524242525

2525252424

2424232425

Sept.

2424232323

2523232322

2323222222

2222212122

GBEAT EGG RIVER BASIN 195

Daily discharge, in second-feet^ of Absecan Creek at Ab&econ, N. J. t far the year ending September SO, 1926 Continued

Day

21...............22...... ____ ..23...............24. ...........25...............

26....... ........27 _ ..... ___ .28 _ ..-..-..-...29...............30..... , __ ..31...............

Oct.

1726261917

302825242222

Nov.

1714111415

1417171718

Doc*

12139.41310

131813131313

Jan.

1728181617

161716141418

F»b.

2626272424

332826

Mar.

2221212521

212324212121

Apr.

1718181719

2018172119

May

2122282223

222020222020

June

2120161819

1822242424

July

2425252525

262525242323

A«g.

2424252423

232424242323

Sept.

22222121

, 21

2021202020

NOTE. This table indicates the flaw over weir, through pipe line, and 0.3 second-foot piverted to duck farm. Discharge over weir estimated Apr. 3-6. Discharge through pipe line estimated Dec. 28 and Feb. 5.

Monthly discharge of Abseeon Creek at Abseeon, N, J., for the year endingSeptember SO, 1926


Month

April.... .. .......... .......

June __ ..July.........-... ...........


Observed

Maximum

3026 20 28 33 34 28 48 25 44 25 25

48

Minimum

9.0 11 9.4

13 19 21 17 16 16 20 23 20

9.0

Mean

17.3 18.5 14.2 16.0 25.5 22.8 21.5 22.8 21.0 24.7 24.1 22.0

20.8


Mean

15.5 18.5 21.0 19.7 25.0 22.7 21.9 22.4 20.9

19-. 4

21.1

Per square mile

0.934 1.11 1.27 1.19 1.51 1.37 1.82 1.35 1.26 1.42 1.38 1.17

1.27

Run-off in inches

1.08 1.24 1.46 1.87 1.57 1.58 1.47 1.56 1.41 1.64 1.59 1.80

17.27

NOTE. Observed discharge is flow over weir, through pipe line, and to duck farm. No correction made for evaporation.

GREAT EGG RIVER BASIN

GREAT EGG RIVER AT FOISOM, N. J.

LOCATION. At highway bridge, 1 mile south of Folsom, Atlantic County, and2% miles above mouth of Pennypot Stream.

DRAINAGE AREA. 56 square miles (measured on State topographic map). RECORDS AVAILABLE. September 8, 1925, to September 30, 1926. GAGE. Water-stage recorder on right bank 15 feet above bridge; inspected by

William Doerr.DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Sand; not permanent. EXTREMES OP DISCHARGE. Maximum stage during period September 8, 1925, to

September 30, 1926, from water-stage recorder, 4.56 feet at noon February22 (discharge, 150 second-feet); minimum discharge, 26 second-feet at 3p. m. August 14, 1926 (gage height, 2.59 feet).

196

ICE. Stage-discharge relation not affected by ice.REGULATION. None.ACCURACY. Stage-discharge relation not permanent. Standard rating curves

well defined. Operation of water-stage recorder satisfactory. Daily discharge determined by applying correction based on periodic discharge measurements to mean daily gage height and then applying corrected gage height to rating table. Records good.

Discharge measurements of Great Egg River at Folsom, N. J., during the years ending September 30, 1925 and 1926

Date

Oct. 1. __ .....Oct. 27 _ ...

Dec. 17 ____

Gage height

Feet 2 742.533.484.413.03

Dis charge

Sec.-ft. 40.230.175

13355

Date

Feb. 23. ___ .Mar. 19.... .-Apr. 12 _ . _ ..May 24.........

Gage height

Feet9 <M

4.523.244 nfi3.11

Dis charge

Sec.-ft,KA

14870

110

62

Date

July 23 __ . ....

Sept.22. ....

Gage height

Feet 2.722.90

«3.19«2.72

Dis charge

Sec.-ft. 39.747.45233.6

Growth of reeds on control.

Daily discharge, in second-feet, of Great Egg River at Folsom, N. J., for the period September 8, 1925, to September 30, 1926

Day

I...... ...... .......2_ ...............3- _ ..............4 ____ .... _ .....5 _ .... __ . _ ....

6 _ ................7 _ ................8 _ ................9 _ ...... __ .. ...10...................

11 __ .......... __ .12 _____ . _ ......13 ___ ..............14 _ ................15...................

16...................17 ___ ..............18 _ ................19 _ ........... _ ..20 __ ........ ___ .

21 _ ................22 ___ ..............23 _ . _ ............24 _ . __ ...... _ ..25 _ ................

26...................27 _ ................28 ___ ...... ___ ..29 _ -. . ....._.30 __ . __ .. ___ ....31 __ ................

Sept.

403737

3737353740

4037373535

3333333333

3131313129

Oct.

2931334056

5651615651

4442444248

5356565351

4846464661

717476746864

Nov.

6676768882

7168666874

747188107120

133133133127114

10183747067

6464707067

Dec.

6464v>80QQ

9589837772

6767646260

5754545252

5454575452

525252505047

Jan.

4747474750

5454505254

5252505047

4747527077

8395107114107

1018374676464

Feb.

778995107114

114101958980

8083777489

107120127133140

146146146140133

133133140

Mar.

140140127120101

898095101107

1141201018977

7772707070

7277837267

727780807470

Apr.

8389808080

74727495114

12012011410189

8067726260

6260575774

8989837480

May

8064575452

5464525252

6154625464

77101127140140

12795746462

575454525050

June

5257524752

5450525250

4444424040

4040403838

3636526057

5250444240

July

5036364047

6480957057

4242404252

7483747772

6254474442

424444424040

Aug.

4040383634

3434363230

3028283057

5257576054

4757625452

626252444036

Sept.

3436404038

3857625764

6757524438

3636363634

3434343640

3632323447

NOTE. Shifting-control method, based on periodic discharge measurements, used Nov. 17 to Jan. 11 and May 26 to Sept. 30.

DELAWARE RIVER BASIN 197

Monthly discharge of Great Egg River at Folsom, N. J., for the year endingSeptember SO, 1926


Month

October _ . ____ . __________ ... ...November .._.... .,_.. ............ .........December. ___________________

March .........................................

May

July...........................................

The year.-....-----... _ -... . ....


Maximum

76 133 95

114 146 140 120 140 60 95 62 67

146

Minimum

29 64 47 47 74 67 57 50 36 36 28 32

28

Mean

52.5 85.5 62.8 64.7

111 89.8 81.7 71.0 46.4 54.0 44.4 42.0

66.8

Persquare mile

0.937 1.53 1.12 1.16 1.98 1.60 1.46 1.27 .829 .964 .793 .750

1.19

Run-off in inches

1.08 1.71 1.29 1.34 2.06 1.84 1.63 1.46 .92

1.11 .91 .84

16.19

DELAWARE RIVER BASIN

EAST BRANCH OF DELAWARE EIVER AT FISHS EDDY, N. Y.

LOCATION. At railroad bridge at Fishs Eddy, Delaware County, 4 miles below mouth of Beaver Kill and 5)^ miles above confluence with West Branch.

DRAINAGE AREA 785 square miles (measured on topographic maps).RECORDS AVAILABLE. November 19, 1912, to September 30, 1926.GAGE. Staff in two sections on downstream end of left pier of bridge; lower

section inclined, upper vertical; read by F. J. Me Morris.DISCHARGE MEASUREMENTS. Made from highway bridge 200 feet above gage

or by wading.CHANNEL AND CONTROL. Coarse gravel; occasionally shifting.EXTREMES OF DISCHARGE. Maximum discharge, corrected for backwater from

eel trap, about 14,400 second-feet at 4 p. m. November 16 (gage height, 11.3 feet); minimum stage recorded, 2.18 feet July 28 (discharge, 143 second-feet).

1912-1926: Maximum stage recorded, 19.0 feet (determined from floodmarks) during night of September 30, 1924 (discharge, about 45,000 second- feet); minimum discharge, 97 second-feet October 12, 14, and 15, 1914, and November 18, 1924.

ICE. Stage-discharge relation seriously affected by ice.ACCURACY. Stage-discharge relation affected by backwater from eel trap or

from ice during the greater part of first half of year; otherwise permanent during year. Standard rating curve well defined. Daily discharge for periods of .no backwater ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage- height graph on basis of the two daily gage readings and averaging discharge for intervals of the day. For periods of backwater daily discharge ascer tained as indicated in footnote to table of daily discharge. Records good except those for periods of backwater from eel trap or ice, which are fair.

Discharge measurements of East Branch of Delaware River at Fishs Eddy, N. Y., during the year ending September SO, 1926

Date

Mar. 29........Aor. 10 ......

Gage height

Feet "3.96

5.219.16

Dis charge

Sec.-ft. 554

2,0109.400

Date

Apr. 17 JuneS.. __ ...

Gage height

Feet7 07

6.833.76

Dis charge

Sec.-ft.

4,170869

Date

July 10. Aug. 21.. ...

Gage height

Feet 2.363.62

Dis charge

Sec.-ft. 191788

0 Stage-discharge relation affected by backwater from eel weir.

198 SUKFACE WATER SUPPLY, 1926, PAKT I

Daily discharge, in second-feet, of East Branch of Delaware River at Fishs Eddy, N. Y., for the year ending September 30, 1926

Day

1 ... ... ..... . -2 __ ........ _3... _.-. .4...............5

6 - 7 ............8.. ..........9 .... ....... .10

11 12 ...13 14.. _ ... __ ...15-.--.-.....-...

16 .. .17 18 19 20

21 .........22.-- .......23 24-.-. _.... ....25 .

26 27 28 29 30 ....31 ... . .

Oct.

4204004205004fifl

4604004nn550

550500480440500

550600700650600

600550550550

1,400

4,0002 6002,2001,7001,6001,400

Nov.

1,3001,2001,1001,100

950

1,3001,3002,4004,8003,400

2,8002,2005,5008,0004,800

12,00010,400

4,540a Cfift

3,120

2,3902,0601,960

1,760

3,4009 9Qft

1 860'

Dec.

1,9601,9601,9602,7402,520

5,9404,9104,0203,5502,740

2,5002)2802,0601,8601,580

1,5001,3001,2001,2001,200

1,3201,9601,9601,4901,200

1,000

700600500500

Jan.

500550550550

' 600

800750600

500

480480460440480

500500800

6,500

2,400

1,3001,000

850

'650608c;Wl

500

Feb.

1,4001,100

900850800

750700650600550

550550550550

1,100

1,0001,1001,4001,6001,700

1,7001,4001,3001,4001,600

2,8002,4002,200

Mar.

2,200-1,9001,8001,6001,500

1,3001,7002,4002,2001,600

1,3001,2001,1001,000

950

850850800900

1,100

1,6002,2003,0004,4007,000

4,9103,1202,500

2,0602,620

Apr.

2,3902,0601,7601,8602,060

2,0602,6205,000

12,50010,000

8,5006/120-4,9104,9105,700

4,7204,1903,4002,9902,390

2,2804,7208,2506,4309,060

6,3304,7204,0203,8603,120

May

3,7003,2602,9902,5002,170

1,9601,7601,5801,4001,320

1,2401,1«01,020

950880

820760700670

1,220

1,020880820760700

640610580553526640

June

8201,2401,090

950880

820820

1,020880820

700670670670760

820640580580454

454454454431387

409431387326306

July

288269252252235

235223204201192

195198223306306

229210210252252

198181198216192

172151143

3211,360

636

Aug.

431345366387306

252269269229210

201264752782640

5531,2601,0901,400

950

760775

1,9101,7601,670

1,4001,2401,090

880760640

Sept.

553526502454502

760700580477477

409366345326306

306288269269252

252229235288345

345306306345345

NOTE. Discharge Oct. 1 to Nov. 16 determined from gage heights corrected for backwater from eel trap by means of one discharge measurement and comparison with flow at adjacent stations. Discharge Dec. 16-20 and Dec. 25 to Mar. 25 determined from gage heights corrected for backwater from ice by means of observer's notes, weather records, and comparison with flow at adjacent stations.

Monthly discharge of East Branch of Delaware River at Fishs Eddy, N. Y,, for the year ending September 30, 1926


Month

July

September...- __________________


Maximum

4,000 12,000 5,940 6,500 2,800 7,000

12,500 3,700 1,240 1,360 1,910

760

12,500

Minimum

400 950 500 440 550 800

1,760 526 306 143 201 229

143

Mean

878 3,410 1,970

985 1,190 2,060 4,760 1,280

664 274 769 389

1,550

Per square mile

1.12 4.34 2.51 1.25 1.52 2.62 6.06 1.63 .846 .349 .980 .496

1.97

Run-off in inches

1.29 4.84 2.89 1.44 1.58 3.02 6.76 1.88 .94 .40

1.13 .55

26.72

DELAWARE BJVEE BASIN 199DELAWARE RIVER AT PORT IERYIS, N. Y.

LOCATION. At steel highway bridge at Port Jervis, Orange County, \}i miles above mouth of Neversink River and 6 miles below mouth of Mongaup River.

DEAINAGE AEEA. 3,070 square miles (measured on topographic maps).RECORDS AVAILABLE. October 12, 1904, to September 30, 1926.GAGE. Chain gage on downstream side of left span of highway bridge and staff

in two sections; the upper section vertical and attached to downstream end of left abutment; the lower section inclined, 30 feet downstream; read by John Bisland.

DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTKOL. Gravel; occasionally shifting.EXTREMES OF DISCHARGE. Maximum discharge recorded during year, 38,700

second-feet at 8 a. m. April 10 (gage height, 9.4 feet); minimum stage, 1.5 feet several times July 14-16 and 22 (discharge, 745 second-feet).

1904-1926: 2 Maximum discharge recorded, 92,700 second-feet at 8 a. m. March 28, 1914 (gage height, 16.0 feet); minimum stage, 0.60 foot at 8 a. m. September 22 and 23, 1908 (discharge, 175 second-feet).

ICE. Stage-discharge relation seriously affected by ice.ACCURACY. Stage-discharge relation permanent except as affected by ice.

Rating curve well defined below 30,000 second-feet. Gage read to quarter- tenths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two daily readings and averaging discharge for intervals of the day, except for periods of ice effect, for which it was ascertained as indicated in footnote to table of daily discharge. Records good except for estimated and ice-affected periods, for which they are fair.

Discharge measurements of Delaware River at Port Jervis, N. Y., during the year ending September SO, 1926

Date

Feb. 3.. ........

Gage height

Feet «3.99

6.66

Dis charge

Sec.-ft. 5,690

19,100

Date

Apr. 16... ......

Gage height

Feet 5.772.99

Dis charge

Sec.-ft. 14,2003,160

Date

July 9--- .Aug. 22

Gage height

Feet 1.662.99

Dis charge

Sec.-ft. 888

2,J920


Daily discharge, in second-feet, of Delaware River at Port Jervis, N. Y., for the year ending September SO, 1926

Day

1 - ... .2-......-..-. ...3.....-...-.-...4... ............5........ .......

6... .......... -7.. .............8- . 9.. .............

10-.-...-........

Oct.

1,7201,7201,7201,7201,630

1,6301,6301,7201,6301.630

Nov.

4,2204,2203,9503,6903,440

3,4403,2004,2309,610

10. 600

Dec.

6,8205,7605,560

10,30011,800

19,40020,00016, 40011,5008.800

Jan.

3,6903,6903,4403,2003,200

3,0803,4403,2002,7502.340

Feb.

2,1506,0005,5004,0003,600

3,6003,4003,2003,2003,000

Mar.

10,0009,6608,3807,5806,820

6,1005,4206,4608,8007.980

Apr.

11,0009>2207,9807,9808,380

9,22010,10012,:00027,70038,000

May

8,3808,3807,9807,2006,820

5,7605,1004,8004,2203.690

June

2,1502,7503, 4403,2003,200

3,0802,7502,5402,9702,640

July

1,4701,,3201,1201,000

950

1,0601,120

9SO898845

Aug.

2,5401.SQO1,4701,180

950

1,0001,4001,6301,4001.320

Sept.

2,5402,1502,3401,8001,630

3,6904,8003,9503,4402.860

2 During the flood of Oct. 10-11,1903, a crest stage of 23.3 feet gage height was observed by Mr. Eighter, city engineer of Port Jervis. This gage height corresponds to a discharge of about 155,000 secondJeet.


Daily discharge, in second-feet, of Delaware River at Port Jervis, N. Y., for the year ending September SO, 1926 Continued

Day

11 . _ ..12 . 13 14.. .15.

16 17 18 19 20

21 _ ... .-22 23 24 _ ... ____ ..25 _

26 27. . 28 29 ...... .30 31..... . .

Oct.

1,6301,6301,6301,6301,800

1,6301,8001,7201,6301,630

1,5501,4701,4701,5503,300

12,90011,5008,3806,4605,7604,800

Nov.

7,9807,980

11,40021,80018,400

17,20029,70019,00013,50011,000

9,2207,9806,8205,7605,420

4,8004,8007,2008,8007,580

Dec.

7,580

6,8205,4204,800

3,9503,6903,6903,690a AAf\

3,6904,2205,7605,1004,220

3,6902,8602,1501,8001,6301,470

Jan.

2,1502,0002,0002,0002,000

2,1502,240o flen

4,39015,700

9,6608,3807,2006,460A. sftn

4,2203,6903,2002,7502,4402,150

Feb.

9 son

2,8002,8003,600

4,8004,2004,8006,0006,500

7,0007,0006,500«,0006,500

11,00011,00010,000

Mar.

7,5806,8205,7605,1004,500

4,2203,2003,2003,200

4,8006,190

12,70018,00022,400

25,70019,30014,00011,00010,60012,000

Apr.

28,30021,90017,40015,20015,200

14,00012,50010,6008,3807,200

6,8206,1007,5809,220

16,200

20,20014,60010,60010,1009,220

May

3,4403,2003,2003,2002,970

2,7502,3402,3402,3402,150

2,9702,7502,5402,5402,440

2,1502,1501,9701,9701,8801,880

June

2,3402,2402,0601,8802,240

2,8602,5402,1501,9701,720

1,6301,5501,6301,9701,880

1,8001,7201,6301,9701,800

July

898845795745745

745795845898950

898745845

1,180898

8451,180

9502,1502,3402,640

Aug.

1,060898

1,4701,7202,640

2,5307,8007,9809,7307,580

5,1003,2002,9706,9506,100

5,4204,8004,5003,6903,2002,860

Sept.

2,4402,2402,1501,9701,970

1,8801,8001,6301,4701,180

1,0001,4001,7201,6301,630

1,4701,8002,3402,7502,970

NOTE. Discharge Jan. 12-15 and Feb. 2 to Mar 1 determined from gage heights corrected for backwater from ice by means of one discharge measurement, observer's notes, and weather records. Discharge Apr. 9 and Sept. 21 and 22 estimated by comparison with flow at adjacent stations, owing to doubtful or missing gage-height record.

Monthly discharge of Delaware River at Port Jervis, N. Y., for the year endingSeptember 30, 1926

[Drainage area, 3,070 square miles] ;

Month

October _____________________November. _ .. _______________

January........... __ . _______ . , .. ...

March ________________ ......

July.... ............ ... _


Maximum

12,900 29,700 20,000 15,700 11,000 25,700 38,000 8,380 3,440 2,640 9,730 4,800

38,000

Minimum

1,470 3,200 1,470 2,000 2,150 3,200 6,100 1,880 1, 550

745 898

1,000

745

Mean

2,990 9,230 6,540 3,990 5,130 9,090

13,400 3,730 2,280 1,090 3,450 2,220

5,250

Persquare mile

0.974 3.01 2.13 1.30 1.67 2.96 4.36 1.21 .743 .355

1.12 .723

1.71

Kun-offin inches

1.12 3.36 2.46 1.50 1.74 3.41 4.86 1.40 .83 .41

1.29 .81

23.19

DELAWARE RIVER AT BEIVIDERE, N. 3.

LOCATION. At Belvidere, Warren County, just below mouth of Pequest River.DBAINAGE AREA. 4,540 square miles.RECORDS AVAILABLE. October 27, 1922, to September 30, 1926.GAGE. Inclined staff on left bank bolted to downstream side of storm sewer

outlet at foot of Second Street, Belvidere; read by Alexander Rush.DISCHARGE MEASUREMENTS. Made by boat 1,000 feet below gage or from high

way bridge half a mile upstream, Pequest River measured separately when highway bridge is used.


CHANNEL AND CONTROL. Channel is heavy gravel and boulders. Control is ledge and boulders three-quarters mile below gage known as Little Foul Eift.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 12.02 feet at 8 a. m. April 10 (discharge, 43,800 second-feet); minimum stage, 2.70 feet several times in July (discharge, 1,100 second-feet).

1922-1926: Maximum stage recorded, 19.3 feet at 2 p. m. October 1,1924, determined by levels from high-water mark (discharge, about 118,000 second- feet); minimum stage, 2.45 feet in July and August, 1923 (discharge, 895 second-feet).

ICE. Stage-discharge relation affected by ice only during extremely cold periods.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

Discharge measurements of Delaware River at Belvidere, N. /., during the year ending September SO, 1926

Date

A TIT Q

Apr. 10 ___ ..Apr. 12 ____

Gage height

Feet 10.7912.029.72

Dis charge

Sec.-ft. 35,30044,00027,500

Date

Apr. 13.. ..Apr. 14.........

Gage height

Feet 8.698.04

Dis charge

Sec.-ft. 21,60018,000

Date

Apr. 19.........Aug. 26 -...

Gage height

Feet 6.685.64

Dis charge

Sec.-ft. 11,4007,830

Daily discharge, in second-feet, of Delaware River at Belvidere, N. /., for the year ending September SO, 1926

Day

I 2... _ .... __ .3 __ .-...-.. -4.... . ..........5 _ ....... __ .

6...... __ ....7 __ . __ .....8 . ...9 __ . ___ ...10 ............

11........ .......12........... _ .13...............14.......... __ .15......... __ ..

16...... _ ......17 ... _ ...18...... __ .....19 ...........20 ... _ ..

21...............22........... _ .23-.... ___ ....24... _ .... _ ..26 .............

26......:...,....2728 __ ...........29 ............30 __ ..........31 .._._.._._.

Oct.

2,2702,1002,1802,2702,360

2,2702,5502,1802,1802,180

2,0102,1802,1002,1002,270

2,3602,5502,5502,7402,740

2,3602,1802,2702,2703,600

7,61015,00010,600-8,3207,2706,620

Nov.

6,3005,4005,4005,1204,850

4,5804,8505,6906,620

10,600

11,0009,430

11,90026,90024,400

21,80036,30026, 90020,50015,900

13,20011,40010,2009,0507,960

7,2706,9407,960

11,9009,430

Dec.

7,6107,6108,320

12,80016,900

23,30028,10021,60017,90015,000

14,60011,90010,2009,4308,320

6,9406,6205,6905,1205,400

5,4006,3007,2707,9605,690

4,4003,4002,6003,2003,6004,320

Jan.

4,6804,6804,6804,3204,320

4,3204,5804,4003,8003,400

3,0003,0003,0003,0003,150

3,3703,1503,8307,960

15,500

15,00013,2009,8107,6106,000

5,9905,6905,4004,5804,0704,580

Feb.

5,6906,9407,9605,6904,850

4,8504,8504,5804,6004,400

4,0004,0004,0004,6005,690

6,3006,3006,6208,3209,050

9,05010,2009,4308,3208,680

15,50015,00014,600

Mar.

14,60014,10012,80011,9009,430

7,96010,00012,30012,30013,200

12,30010,2009,0507,9607,610

6,9406,3005,9905,6906,940

7,96010,20014,10018,90024,400

26,200

18,90015,00013,20013, 200

Apr.

15,00013,20011,40011,00010,600

11,40012,30013,70026,90042,800

36,30026,90021,00017,90016,900

16,90015,50013,70011,40010,600

9, 0508,320

10, 60017, 90017,400

23,80017,90013,70012,80011,900

Ma'y

10,60010,60010,2009,4308,680

7,9606,9406,6205,9905,400

5,1204,5804,5804,3204,070

4,0703,6003,6003,3703,830

4,0704,5804,0703,8303,600

3,3703,1502,9402,9402,7402,740

June

2,7404,8505,6905,4004,580

4,4003,8304,0704,0703,830

3,6003,3703,0002,7402,940

3,8304,0703,6003,3703,000

2,5502,3602,4602,4602,740

2,5502,4002,600

2,460

July

2,1802,0101,9301,8501,700

1,5601,6301,6301,5601,700

1,6301,4301,2001,4301,430

1,5601,7001,6601,5601,370

1,2001,5601,5601,6301,560

1,5601,2001,2601,1501,2603,600

Aug.

4,3203,1502,1801,9302,460

2,1801,9301,7801,9301,630

1,7001,7801,7802,4603,830

4,0705,4009,0509,0509,430

6,9405,4004,5807,2707,960

7,6107,2706,3005,4004,5803,830

Sept.

3,3703,6004,3203,3703,150

5,4008,3207,6106,3005,400

4,3204,0703,6003,3703,150

2,9402,7402,7402,5502,550

2,1002,1802,2702,2702,270

2,4002,4602,7403,3703,830

NOTE. Stage-discharge relation affected by Ice Dec. 26-30, Jan. 8-14, and Feb. 9-14. Gage not read Jan. 25, Mar. 7, Apr. 4, June 6.13, 20, 27, 28, and Sept. 26. Daily discharge for these periods based on study of weather record, gage-height graph, and comparison with record at Riegelsville.

202 SURFACE WATEE SUPPLY, 1926, PART I

Monthly discharge of Delaware River ott Belvidere, N. J., for the year endingSeptember 80, 1926

[Drainage area, 4,540 square miles!

Month

April. -.-....-_ ._.. ... ...................Mssy _ .......................................

July..... ......................................

September. ................ __ . .......


Maximum

15,000 36,300 28,100 15,500 15,500 26,900 42,800 10,600 5,690 3,600 9,430 8,320

42, 800

Minimum

2,010 4,580 2,600 3,000 4,000 5,690 8,320 2,740 2,360 1,150 1,630 2,100

1,150

Mean

3,690 12,000 9,600 5,610 7,290

12,500 16,600 5,210 3,400 1,620 4,490 3,630

7,110

Persquare mile

0.813 2.64 2.11 1.24 1.61 2.75 3.66 1.15 .749 .357 .989 .800

1.57

Run-off in inches

0.94 2.95 2.43 1.43 1.68 3.17 4.08 1.33 .84 .41

1.14 .89

21.29

DELAWARE RIVER AT RIEGEISVIIIE, H. J.

LOCATION. At suspension bridge between Riegelsville, Warren County, N. J., and Riegelsville, Bucks County, Pa., 600 feet above mouth of Musconetcong River and 9 miles below Lehigh River.

DRAINAGE AREA. 6,190 square miles.RECORDS AVAILABLE. July 3, 1906, to September 30, 1926.GAGE. Water-stage recorder on left bank (New Jersey side) 20 feet above bridge;

inspected by J. H. Brotzman.DISCHARGE MEASUREMENTS. Made from bridge.CHANNEL AND CONTROL. Rock outcrop and large boulders; practically permanent.EXTREMES or DISCHARGE. Maximum stage during year, from water-stage

recorder, 13.05 feet at 7 a. m. April 10 (discharge, 47,100 second-feet); mini mum stage, 2.12 feet at 9.30 a. m. July 28 (discharge, 1,430 second-feet; not including flow in Pennsylvania Canal).

1906-1926: Maximum stage recorded, 25 feet March 28, 1913 (discharge, 144,000 second-feet); minimum stage, 1.55 feet at 8 a. m. September 20, 1908 (discharge, 870 second-feet; not including flow in canal).

The flood of October 10-11, 1903, reached a stage of 35.9 feet determined by levels from three good floodmarks. Maximum discharge during this flood has been estimated at 275,000 second-feet at Riegelsville from observa tions made at Lambertville.

ICE. Stage-discharge relation affected by ice during severe winters only.DIVERSIONS. The Delaware division of the Pennsylvania Canal diverts about

230 second-feet from Lehigh River near its mouth from about March 31 to December 15 each year. Diversion not included in table of daily discharge.

ACCURACY. Stage-discharge relation permanent, unaffected by ice. Rating curve well defined. Operation of water-stage recorder satisfactory except for a few short periods. Daily discharge ascertained by applying to rating table mean daily gage height, determined from inspection of recorder graph, or for days of considerable fluctuation, by averaging discharge for intervals of the day. Records good.

DEIAWAKE RIVER BASIN 203

Discharge measurements of Delaware Miner at Riegelsville, N. J., during the yearending September SO, 1926

Date

Apr. I.............Apr. 10.... ........Apr. 12 _ . _ . ....Apr. 14............Apr. 21. .......... .May 26... .........

River

Gage height

Feet

12.98 10.238.17 5.57

Dis charge

Sec.-ft.

46,200 30,600 21,200 11,000

Pennsyl vania Canal,

discharge

Sec.-ft, 198 218

253

Date

Alicr 9fi

Aug. 27----. ---

River

Gage height

Feet

2.75

Dis charge

Sec.-ft.

2,850

Pennsyl vania Canal,

discharge

Sec.-lt. 236 236 234 237 239 250

Daily discharge, in second-feet, of Delaware River at Riegelsville, N. J., for the year ending September 30, 1926

Day

1 __ .. .....2 ..- .- 3 __ - .....4 __ ........5... ........

6.. ......7. ......... .8.- .........9 __ . _ ....

10 ........

11 __ .. _ ...12 __ ... _ .13.- 14 __ ... .....15...........

16 17- .18 ______ .19 20

21 _ 99

23 24 ____ . ...25 .

26- 27- 28. __ ......22 _ ......30- O1

Oct.

2,7202,6202,7202,8203,150

3,1503,1502,9302,7202,820

2,7202,7202,7202,7209 cwn

3,1503,3803,3803,3803,380

3,040 2,9302,9302,9304,600

9,54017,80013,66010,8009,070S,410

Nov.

7,4407,1206,8006,4806,170

5,860

7,1208,740

........

9,7009,700

Dec.

9,700

9,3908,0807,7608,080

7,760 8,7409,7009,7008,410

7,1204,9603,6104,6804,680A QArt

Jan.

5,8606,1706,1706,1706,170

6,4806,4805,5605,5604,960

4,6804,4004,1203,8603,860

4,4004,4005,860

15,80018,400

20,400 18,10012,90010,4008,740

8,0808,4107,4405,5605,8606,480

Feb.

10,8009,390

10,4008,740ft S(VI

6,8007,1207,1206,8006,480

6,4805,8606,1706,1708,080

10,4009,0709 700'

.. .

Mar.

9,7008,4108,0808,0808,740

May

9,3908,7408,0807,4406,800

6,8006,4805,5605,2605,260

4,9604,9604, 6804,4004,680

4,960 5,2605,2604,6804,400

4,1203,8603,6103,3803,1503,380

June

4,9607,1208,4107,4406,480

5,5605,2605,2605,5605,260

4,6804,4004,1204,1204,400

5,8605,8605,2604,6804,120

3,610 3,1503,3803,3808,380

3,6103,8604,1203,6103,380

July

3,0402,7202,5202,4202,320

2,4202,7202,3202,1302,130

2,1301,9401,7601,6801,850

2,0402,1301,9403,4202,130

1,760 1,8501..9402,1302,320

2,1301,7601,5901,7602,5203,240

Aug.

5,5603,8602,9302,5202,720

2,5202,3202,1302,1302,130

2,0402,1302,7202,9304,680

5,5609,390

11,80010,00011,800

8,410 6,8005,8607,5009,070

9,3908,7407,7606,8905,8604,960

Sept.

4,4004,4006,4805,2604,680

10,00013,70012,50010, 0008,740

7,4406,4805,8604,fl604,680

4,4004,1203,8603,6103,610

3,150 3,1503,1503,1503,380

3,6103,6103,6104,4004,960

NOTE. This table indicates river discharge; does not include the diversion by Pennsylvania Canal, which was open Oct. 1 to Nov. 28 and Mar. 11 to Sept. 30.

63435 30 14


Monthly discharge of Delaware River at Riegelsville, N. J., for the year endingSeptember SO, 1926


Month

February- _______________

June __ _______ . ........July .-- . -...... .......


Observed

Maximum

8,410 3,240

Minimum

2,62ft 5,860 3,610 3,860 5,860 8,080 3,150 3,150 1,590 2,040 3,150

1,590

Mean

4,680 15,400 13,300 7,800

11,800 16,900 6,370 4,810 2,190 5,580 5,510

9,450

Corrected for di version

Mean

4,910 15,700 13,300 7,800

11,800 17,000

- 6,600 5,040 2,420 5,810 5,740

9,610

Per square

mile

0.793 2.542.15 1.26 1.91 2.75 1.07 .814 .391 .939 .927

1.55

Run-off in inches

0.91 2.83 2.48 1.45 1.99 3.17 1.23 .91 .45

1.08 1.08

21.10

NOTE. The Pennsylvania Canal was closed Nov. 29 to Mar. 10.

DELAWARE RIVER AT TRENTON, N. J.

LOCATION. At Calhoun Street Bridge, Trenton, Mercer County, 1 mile above Pennsylvania Railroad bridge and half a mile above mouth of Assunpink Creek.

DRAINAGE AREA. 6,800 square miles.RECORDS AVAILABLE. February 24, 1913, to September 30, 1926.GAGE. Chain gage on downstream side of bridge 100 feet from left abutment;

read by employee of United States Weather Bureau.DISCHARGE MEASUREMENTS. Made from upstream side of bridge.CHANNEL AND CONTROL. Rocky and permanent at the rapids a few hundred feet

below bridge.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.20 feet at

2 p. m. April 10 (discharge, 48,100 second-feet); minimum stage, 0.03 foot July 15 (discharge, 1,810 second-feet). Flow in canals not included in the maximum and minimum discharge.

1913-1926: Maximum stage recorded, 13.3 feet during night of March 28-29, 1913 (discharge, 160,000 second-feet); minimum stage recorded, 0.40 foot several times in October and November, 1914 (discharge, 1,240 second-feet). Flow in canals not included in the maximum and minimum discharge.

ICE. Stage-discharge relation affected by ice.DIVERSIONS. Delaware division of the Pennsylvania Canal diverts about 50

second-feet by the gaging station from about March 31 to December 15 each year. Delaware & Raritan Canal feeder diverts about 130 second-feet from March 1 to December 31 each year. The Trenton power canal diverts about 250 second-feet around the gage daily. Diversion not included in table of daily discharge.

DELAWARE EIVER BASIN 205

ACCURACY. Stage-discharge relation considered permanent, except when affected by ice. Rating curve well defined. Gage read to hundredths once a day. Daily discharge ascertained by applying to rating table daily gage height corrected for ice effect when necessary. Records fair.

COOPERATION^ Gage readings furnished by United States Weather Bureau.

The following discharge measurements were made:March 11, 1926: Gage height, 3.10 feet; discharge, 17,900 second-feet.July 27, 1926: Gage height, 0.22 foot; discharge, 2,520 second-feet.

Measurements of discharge in canals which divert water around gaging station on Delaware River at Trenton, N. J., during the year ending September SO, 1926

Date

Oct. 29.............Dec. 15 ___ .. ....

Jan. 12.............Mar. 11 _ . ........

Delaware & Raritan

feeder

Sec.-ft. 130119

37.3133

Trenton power canal

Sec.-ft. 204247

264262

Pennsyl vania Canal

Sec.-ft. 521010

0

Date

Apr. 19 ..........

July 14............July 26... ... .... ...Aug. 30.-... ...

Delaware & Raritan

feeder

Sec.-ft. 15817110090

103

Trenton power canal

Sec.-ft. 242283

173260

Pennsyl vania Canal

Sec.-ft. 5442.9

46.246.8

Daily discharge, in second-feet, of Delaware River at Trenton, N. J., for the year ending September SO, 1926

Day

1 ___ ...2.........3.. ....4 _ . .....5

6 7.........8 ___ ....9 _ ......10 .

11. _ .....12 13 14. ___ ...15 _ ......

16 - 17.........18.. ,19 20... .

21 ...,22 23 _ ......24 25 _ ......

26... .27 ___ ....28... .29 30 ___ ...31.........

Oct.

2,5602,5602,7103,1802,860

2,8602,7102,5602,5602,430

3,0202,8602,5602,7103,180

3,5204,6003,8603,5203,520

3,5203,5203,1803,1804,220

11,60015,10017,30013,00010,4009,150

Nov.

8,6007,6007,1006,6506,650

6,2006,2006,2008,6008,600

15,80013,00022,90026,50033,400

28,40035,40038,70029,40022,900

19, 70016,50014,40013,00012,300

11,00010,40010, 40012,30014,400

Dec.

11,6009,7509,750

19,70023,800

31,40038,70034,40027,40022, 900

19,70016,50015,80014,40012,300

11,00010,4009,1508,1008,600

8,1008,1007,6009,7509,750

5,500

Jan.

6,500

U.800

20,50015, 100

23,80022,10017,30013,70011,600

7,1006,650

i 6,500

Feb.

8,600

10,000

1

1722, 000

1

Mar.

22,10021,30022,10021, 30020,500

18,10029,40029,400IS, 90018,100

18,10017,30013,70013,00011,000

10,4009,7508,6008,1008,600

10,40011,60014,40019,70026,500

30,40034,40028,40022,90018,90017,300

Apr.

18,90018,10015,80016,50015,100

14,40013,70015,80025, 60046,900

42,10035,40029,40023,80021,300

19,70018,90018,10015,80013,700

12,30011,60010,4009,750

20,500

22,10025,60018,90015,80015,100

May

14,40013,00013,00013,00011,000

10,0009,7508,6008,1007,600

6,6506,2006,2006,2005,800

5,4005,4005,0005,0005,000

5,0005,4005,8005,0005,000

4,6004,2203,8603,8603,5203,520

June

3,5205,5008,1008,6007,100

6,6505,4005,8005,8005,800

5,4005,4004,6004,2204,220

5,4005,8005,8005,4004,600

4,2203,8603,5203,8603,860

3,8603,8604,2204,2203,860

July

3,5203,1803,1803,1802,560

2,4302,3002,7102,3001,990

2,4301,9902,0801,9001,810

2,1902,1902,1901,9902,430

2,1901,9901,9002,1902,300

2,4302,4301,9002,3003,1802,860

Aug.

5,0005,4003,8603,1802,860

3,1802,860

2 3002,300

2,3002,8606,6505,0003,860

6,65011,0009,750

11,60012,300

11,0008,6007,1006,200

10,400

10,40010,4009,1507,6007,1005,800

Sept.

5,0004,6005,4007,1005,400

5,00015,10015,10012,30011,000

9,1507,6006,200'5,8005,400

5,0004,6004,6004,2203,860

3,8603,5203,1803,1803,180

3,5203,8603,8603,8604,600

NOTE. This table indicates flow in river only. Diversions by canals included in monthly table, discharge relation affected by ice Dec. 26-31, Jan. 3-12,17, Feb. 1-3,12,15, and 18-20; gage not read Jan. 1, 2,13-16,18,28-31, Feb. 4-11,13,14,16,17, 21-27, Apr. 20, May 6, June 2, and Sept. 30. Daily discharge for these periods estimated by study of weather records, gage-height graph, and comparison with gage-height records on Delaware River at Riegelsville, N. J.


Monthly discharge of Delaware River «f Trenton, N. J., for the year endingSeptember SO, 1926


Month

Anril ___ _ _ . _ _ . ... ."May:..-.-..-.-.......-.......

July ... . .__ __...


Observed

Maximum

17,300 38,700 38,700 23,800

34, 400 46,900 14, 400 8,600 3,520

12,300 15, 100

46, 900

Minimum

2,430 6,200

8,100 9,750 3,520 3,520 1,810 2,300 3,180

1,810

Mean

4,980 15,800 13,900 8,620

12, 900 18, 500 20,000 6,940 5,080 2,390 6,440 5,970

10,100

Corrected for diversion 0

Mean

5,410 16, 200 14,300 8,890

13,200 19,000 20,500 7,370 5,510 2,820 6,870 6,400

10,500

Per square mile

0.796 2.38 2.10 1.31 1.S4 2.79 3.01 1.08 .810 .415

1.01 .941

1.54

Run-off in inches

0.92 2.66 2.42 1.51 2.02 3.22 3.36 1.24 .90 .48

1.16 1.05

20.94

a The diversions are: Pennsylvania Canal, 50 second-feet, Oct. 1 to Nov. 28, and Mar. 11 to Sept. 30; Trenton .power canal, 250 second-feet daily; Delaware & Raritan Canal feeder, 130 second-feet, Oct. 1 to Dec. 31, Mar. 1 to Sept. 30, and 40 second-feet Jan. 1-15.

BEAVER XIL1 AT COOKS FAILS, N. Y.

LOCATION. At covered highway bridge in Cooks Falls, Delaware County, 5% miles below mouth of Willowemoc Creek and 10 miles above mouth.

DRAINAGE AREA. 241 square miles (measured on topographic maps).RECORDS AVAILABLE. July 25, 1913, to September 30, 1926.GAGE. Vertical staff in three sections, bolted to rock on left bank under bridge;

read by H. B. Couch.DISCHARGE MEASUREMENTS. Made from downstream side of bridge or by wading.CHANNEL AND CONTROL. Coarse gravel, boulders, and solid ledge; shifts occa

sionally.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 8.8 feet at

7 a. m. November 16 (discharge, about 4,730 second-feet); minimum stage, 1.09 feet at 3 p. m. July 28 (discharge, 3 second-feet).

1913-1926: Maximum stage recorded, about 15.0 feet during night of September 30, 1924, determined from floodmarks (discharge, about 13,400 second-feet); minimum stage, 0.60 foot September 14-16, 1913 (discharge, about 23 second-feet; revised).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent during year except as affected

by ice. Rating curve well defined below 3,000 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two daily gage read ings and averaging discharge for intervals of the day, except for periods of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records good; winter records fair.

DELAWARE KIVER BASIN 207

Discharge measurements of Beaver Kill at Cooks Falls, N. Y., during the year endingSeptember 30, 1926

Date

Oct. 17. ........Mar. 28.........Apr. 10.. .......

Gage height

Feet 2.543.336.63

Dis charge

Sec.-ft. 343636

2,700

Date

Apr. 11 ......Apr. 17

Gage height

Feet 6.334.972.24

Dis charge

Sec.-ft. 2,4901,590

248

Date

July 10.........Aug. 21.........

Gage height

Feet L272.55

Dis charge

Sec.-ft. 83.7

368

Daily discharge, in second-feet, of Beaver Kill ai Cooks Fatts, N. Y., for the year ending September 30, 1926

Day

1. ........ __ ..2 .._....__ .3 ............4-._ ............ 5. ..............

« .7.. . ..........8............. .9...............10...............11 ............12...............13...............14......... _ ...15......... ...

16...............17.. ... __________18......... ..19...... _ ......20 .... ..__....21...............22..... . ..23 .........-..24 ..25...............26 ...........27... ........ ....28 _ __29............ .30..... ..........31...............

Oct.

152143221189170210179160199234

199160160152221210305305290246

246221221221963

1,220970725635595515

Nov.

480462445410392635725

2,0301,8001,180

820750

3,4903,0101,8503,8402,3701,3601,180

970725680635595555515871920542480

Dee.

555515570995

1,2402,6201,5401,120

870725680680635596555445375305305305

3921,180

635460380300260220190160150

Jan.

160170170180190260240180170150150150140130150170200

1,8001,9401, 070

725600420340260

220200190170170160

Feb.

440360300260240220220200190170160160160220340280260260500550500420340380500

1,000770680

Mar.

595595498445420400500750600500

400380340320300260260260280340500595770680848

1,2601,070

635555680680

Apr.

595635595635595595770

2,6203,8402,9502,6102,1501,9401,9401,8701,9201,6601,1801,070

920951

2,4803,2302,5203,1202,1501,5401,6001,3601,240

May

1, 4201,1801,070

920770595635595555480

462428375358322305290274274445322274274246221210199199179179246

June

305462410305260246274340274246221210210221260210199179179170160160152143143160179143127120

July

113110103101979597979587878590

152112

9687859794

8785929083

7571.64

186560221

Aug.

143-127170ISO127105113106979087

106402392260555846912669480375502

1,5101,030

680635595462358322274

Septj

234234221179199445290234199179160152143135143135127127127120113105127160135246160152179160

NOTE. Discharge Dec. 24 to Jan. 18, Jan. 22 to Feb. 26, and Mar. 5-21 determined'from gage heights corrected for backwater from ice by means of observer's notes, weather records, and comparison with flow of East Branch of Delaware River at Fishs Eddy. Gage-height record lacking Jan. 7-9, Aug. 8, 16, 26, and Sept. 10-12; discharge estimated by comparison with flow of East Branch of Delaware River at Fishs Eddy.

Monthly discharge of Beaver Kill at Cooks Falls, N. Y., for the year endingSeptember 80, 1926


Month

October ______________________

January _____________________February ______________________March. _ ......... _ . ....... _ .... _ ......

June _________________________July...........................................

September _____________________The year.. ________________


Maximum

1,220 3; 840 2,620 1,940 1,000 1,260 3,840 1,420

462 560

1,510 445

3,840

Minimum

143 392 150 130iea260 595 179 120 64 87

105

64

Mean

343 1,160

644 362 360 539

1,710 461 222 116

' 410 177

540

Persquare mile

1.42 4.81 2.67 1.50 1.49 2.24 7.10 1.91 .921 .481

1.70 .734

2.24

Run-off in inches

1.64 5.37 3.08 1.73 1.55 2.58 7.92 2.20 1.03 .55

1.96 .82

30.43


UTTIE BEAVER Kill NEAR IIVOTGSTON MANOR, N. Y.

LOCATION. On farm of Emory Keene, 2 l/z miles southeast of Livingston Manor, Sullivan County, 2^ miles below Parksville, and 3% miles above Cattail Brook.

DEAINAGE AEEA. 19.8 square miles (measured on topographic maps).RECORDS AVAILABLE. July 26, 1924, to September 30, 1926.GAGE. Staff gage in two sections on right bank; the lower section inclined,

the upper vertical. Vertical section attached to right abutment of farm bridge; inclined section about 25 feet below.

DISCHABGE MEASUREMENTS. Made from farm bridge or by wading.CHANNEL AND CONTROL. Control composed of gravel; shifts occasionally.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 3.5 feet at

5 p. m. April 9 (discharge, 515 second-feet); minimum stage, 0.78 foot at 5.30 p. m. July 28 (discharge, 3.2 second-feet).

1924-1926: Maximum stage recorded, about 5.6 feet at 5 p. m. Sep tember 30, 1924 (discharge probably about 1,700 second-feet); minimum stage, 0.68 foot several times August 11 to September 5, 1924 (discharge, 2.7 second-feet).

ICE. Stage-discharge relation slightly affected by ice.ACCURACY. Stage-discharge relation changed during flood of April 9; affected

by ice during period December to March. Rating curves well defined. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two gage readings and averaging discharge for intervals of the day, except for periods of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records good; winter records fair.

Discharge measurements of Little Beaver Kill near Livingston Manor, N. F., during the year ending September 30, 1926

Date

Oct. 17... ...Feb. 7 .. Feb. 26 Mar. 28..... _ .

Gage height

Feet 1.61

"1.93

"1.69

Dis charge

Sec -ft. 51.725.870.255.7

Date

Apr. 9 -

Apr. 16 -

Gage height

Feet 3.37

1.97

Dis charge

Sec.-ft. 462

106

Date

July 10 Anff 91

Gage height

Feet 1.26.84

1.46

Dis charge

Sec.-ft. 17.54.10

31.8


Daily discharge, in second-feet, of Little Beaver Kill near Livingston Manor, N. Y. , for the year ending September SO, 1926

Day

1. __ ..........2...............3....... ....... .4..-...-..-....5.... ......... ..

6..... -7 ......8 .-. .._9

10.. ....... ......

11.... ...........12......... ......13... ....... .....14.... _ ........15... .........

Oct.

1111251620

2015141719

1614131234

Nov.

3030302824

543812410362

5150

331133,94

Dec.

373963

101on

133867052

4844403430

Jan.

1314161922

CM

26181412

1111Q

810

Feb.

6040343028

2622201817

1412142026

Mar.

3432323026

24

1107560

5040322826

Apr.

5448

5262

6984252415270

208160130150150

May

102102724538

3429262421

2019181716

June

4043261916

1619181613

1212131319

July

5.35.3Q d5.85.1

4.94.64.41 Q4.2

4.64.216146.3

Aug.

1313682414

111013108.0

7.710243122

Sept.

2218151334

7040232119

1614131211


Daily discharge, in second-feet, of Little Beaver Kill near Livingston Manor, N. Y., for the year ending September 80, 1926 Continued

Day

16 ___ .... .....17_......._______18........... 19...............20. ...

21...............22......... ......23........ .......24 ____ . .......25

26 ________ ..27- ........28...............29...............SO........ .......31

Oct.

2231282422

1918

, 1819

258

1246551453930

Nov.

232113736255

4841373228

2756954941

Dec.

2624222525

36

503626

221916151210

Jan.

13198520881

61 dfi

383022

161212121212

Feb.

2222244055

3228222640

70-4438

Mar.

222099

2536

7303

14393133

1337650566866

Apr.

10292805845

68170150100192

10875948567

May

1514131234

2117191814

131111111018

June

161311109.4

7.7109.08.08.0

11128.46.75.8

July

6.54.85.35.54.9

4.24.49.76.34.9

4.03.93.4296919

Aug.

1401161108042

313419610070

5845352724 .23

Sept.

111110109.7

9.07.79.01812

2716242921

NOTE. Discharge Dec. 15-18, Dec. 25 to Jan. 18, Jan. 23 to Mar. 18, and Mar. 28 determined from gage heights corrected for ice effect by means of two discharge measurements, observer's notes, weather records, and comparison with flow of Beaver Kill at Cooks Falls. Gage height estimated June 26 on account of lack of gage readings.

Monthly discharge of Little Beaver Kill near Livingston Manor, N. Y., for the year ending September 30, 1926


Month

April..........................-....... .....May _______________________

July............... ........ . .


Maximum

258 331 266 208

70 143 415 102 43 69

196 70

415

Minimum

11 24 10

8 12 20 45 10 5.8 3.4 7.7 7.7

3.4

Mean

34.5 72.4 51.9 29.5 30.1 56.4

121 26.9 14.7 9.12

45.5 18.8

42.6

Persquare mile

1.74 3.66 2.62 1.49 1.52 2.85 6.11 1.36 .742 .461

2.30 .949

2.15

Run-off in inches

2.01 4.08 3.02 1.72 1.58 3.29 6.82 1.57 .83 .53

2.65 1.06

29.16

WEST BRANCH OF DELAWARE RIVER AT HALE EDDY, N. Y.

LOCATION. At highway bridge in Hale Eddy, Delaware County, 8 miles below Deposit and 8J4 miles above confluence with East Branch.

DRAINAGE AREA. 603 square miles (measured on topographic maps).RECORDS AVAILABLE. November 15, 1912, to September 30, 1926.GAGE. Vertical staff in four sections, attached to rocks near right abutment of

bridge and to abutment; read by W. J. Shanly.DISCHARGE MEASUREMENTS. Made from cable 400 feet below gage or by

wading.CHANNEL AND CONTROL. Coarse grave) and boulders; practically permanent.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 10.9 feet at

8 a. m. April 9 (discharge, 12,200 second-feet); minimum stage, 1.5 feet several times Ju]y 10-12 and 26-28 (discharge, 68 second-feet).


1912-1926: s Maximum stage, determined from graph of recorded gage readings, about 15.8 feet during night of September 30,1924 (discharge, about 26,500 second-feet); minimum stage recorded, 1.0 foot at 6 p. m. September 21, 1913 (discharge, 34 second-feet).

ICE. Stage-discharge relation seriously affected by ice.ACCTJEACY. Stage-discharge relation permanent except as affected by ice. Rating

curve fairly well defined. Gage read to half-tenths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two daily gage readings and averaging discharge for intervals of the day, except for periods of ice effect for which it was ascertained as indicated in foot note to table of daily discharge. Open-water records good; winter records fair.

Discharge measurements of West Branch of Delaware River at Hale Eddy, N. Y., during the year ending September 80, 1926

Date

Oct. 16 ___ ..Feb. 6..........Mar. 29........

Gage height

Feet 2.32

"3.674.97

Dis charge

Sec.-ft. 304631

1,980

Date

Do July 11. ...... .-

Gage height

Feet 2.682.681.59

Dis charge

Sec.-ft. 417446102

Date

Aug. 21.........

Gage

Feet 2.2$

Dis charge

Sec.-ft. 275


Daily discharge, in second-feet, of West Branch of Delaware River at Hale Eddy, N. Y., for the year ending September SO, IBM

Day

1... ........... .2..... ..........3 4 .. ....5.... ....... ....

6 . 7... ......... ...S.. ............ .9 10 ......

11 12 13 14 15

16 . 17 18. ..19 20

21...............22 23 24... ............25 .. ...

26 27 28.... ...........29...............30 ...31

Oct.

370370370350330

390370290330310

310330310310330

310310310310290

310330310370

1,800

2,8401,7901,4401,3601,2101,070

Nov.

930930780780810

1,0701,2102,5103,1702,470

1,7003,3303,2003,090

5,0104,8803,5902,7702,270

1,7001,6101,5201,3601,210

1,360

1,7001,5201,210

Dee.

1,2101,3601,7002,0702,270

3,2002,7702,2701,9701,700

1,5201,3601,2101,070930

930840700525525

7251 7001^5001 200'900

700600500440380360

Jan.

360380400420480

60055048044n400

380360340340360

380380440

6,8202,000

1,6001,200900791700

575500460420400380

Feb.

1,000850700650600

600550500460440

420400400500800

700800

1,1001,2001,300

1,2001,1001,0001,1001,400

1,9001,7001,600

Mar.

1,5001,4001,3001,1001,100

1,0001,3001,7001,5001,100

950850850800750

650600600

800

1,1001,7002,2002,8003,560

4,7903,8203,2002,2702,0701,970

Apr.

1,8801,7001,7901,7001,700

2,0703,2605,71011,3008,230

6,4504,0803,5603,5603,320

3,0902,5702,1701,7901,700

1,5202,2403,6904,2605,370

3,8202,8702,3702,1701,880

May

1,7001,5201,5201,3601,280

1,0701,000870780675

700675fiOO550525

500432370310704

700600500432432

390350272238238390

June

575625700575455

455478432455410

390390390350390

432370310330310

290255238220205

205205190175160

July

146133120120108

9786978668

7768120238190

160146 146146133

108120978697

777768

561981525

Aug.

272205205205205

14612012097108

9797146160190

205238410370310

272432478625575

810675625525455350

Sept.

255220190175175

175350432455310

255205205175146

146133146133108

120120120120146

205205190175175

NOTE. Discharge Dec. 23 to Jan. 18, Jan. 27-31, and Feb. 6 to Mar. 24 determined from gage heights corrected for backwater from ice by means of one discharge measurement, observer's notes, weather records, and comparison with records at adjacent stations. Gage-height record lacking Jan. 20-24 and Feb. 1-6; discharge ascertained by comparison with flow at adjacent stations.

3 The flood of Oct. 10, 1903, reached a stage of 20.3 feet, corresponding to a discharge of about 46,000 second-feet.

DELAWARE RIVEK BASIN 211

Monthly discharge of West Branch of Delaware River at Hale Eddy, N. Y.} for the year ending September SO, 1926

[Drainage area, 603 square mites]

Month

October _____________________November ___________________December ___________________

February ___________________

April..........................................May.... ___________________

July. .. .....................................

September ___________________


Maximum

2,840 5,010 3,200 6,820 1,900 4,790

11,300 1,700

700 981 810 455

11,300

Minimum

290 780 360 340 400 600

1,520 238 160

68 97

108

68

Mean

627 2,050 1,260

780 892

1,610 3,390

699 366 170 314 199

1,030

Persquare mile

1.04 3.40 2.09 1.29 1.48 2.67 5.62 1.16 .607 .282 .521 .330

1.71

Run-off in inches

1.20 3.79 2.41 1.49 1.54 3.08 6.27 1.34 .68 .33 .60 .37

23.10

FLAT BROOK NEAR FLATBROOKVILLE, N. J.

LOCATION. At farm of E. S. Aker, 1 mile above Flatbrookville, Sussex County,and \% miles above mouth.

DRAINAGE AREA. 65 square miles (measured on State topographic map). RECORDS AVAILABLE. July 8, 1923, to September 30, 1926. GAGE. Water-stage recorder on right bank; prior to January 6, 1926, an inclined

staff at same site. Recorder inspected and gage read by Wesley Gariss. DISCHARGE MEASUREMENTS. Made from highway bridge 1,000 feet below gage

or by wading. CHANNEL AND CONTROL. Channel of fine to coarse gravel. Control is bar of

heavy gravel 50 feet below gage. EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage

recorder, 3.50 feet at 4 a. m. February 26 (discharge, 575 second-feet);minimum stage recorded, 1.39 feet at 6.30 a. m. September 26 (discharge,5 second-feet).

1923-1926: Maximum stage, from high-water mark, 7.1 feet April 7,1924, and February 11, 1925 (discharge, about 2,350 second-feet; revised);minimum stage recorded, 1.35 feet at 7 a. m. September 6 and 7, 1923(discharge, 4 second-feet).

ICE. Stage-discharge relation affected by ice. REGULATION. Daily distribution of flow affected by water-power plant 3 miles

above gage. . ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined. Staff gage read to hundredths twice daily.Daily discharge ascertained by applying to rating table mean daity gageheight, corrected for ice effect during winter. Records good.

Discharge measurements of Flat Brook near FlatbrookviUe, N. J., during the year ending September 30, 1926

Date

Feb. 9.... ......Feb. 26

Gage height

Feet «2.50

8.26

Dis charge

Sec.-ft. 80

489

Date

Feb. 26... _ ...Feb. 27.........

Gage height

Feet 3.232.84

Dis charge

Sec.-ft. 460299

Date

Julys. ..

Gage height

Feet 1.67

Dis charge

Sec.-ft. 22.0

< Stage-discharge relation affected by ice.

212 SUKFACE WATER SUPPLY, 1926, PART I

Daily discharge, in second-feet; of Flat Brook near Flatbrookville, N. J., for the year ending September 30, 1926

Day

1....... ........2. ___ . _ .3...... _____ .4..... ___ . ...5 _ .

fir:::::::::::8. __ .... __ .9........ .......

10...............

11 ...... __ ..12. __ ... .....13.. ___ .. ......14...............15 ___ .... ....

16...............I?-;..:..;:... .18---....-.......19. ____ ..20............

21......... . .22...... _ .....23...............24. __ .......25...............

26...............27 .............28.... ...........29... __ . .....30..... _ .......31. ____ ... ...

Oct.

1516241791

1921oo10

23

42271893

25

26282625<w

2626263495

CM

75664943

Nov.

56on

423639

475347so70

5853

216200idn

285185

128

Ql

938375

717Q

130SO70

Dec.

75si

143285on/i

4443fkt

249Ofift

185

135118125111

Q<;

soso777575

QQ

1AOQC

75

55

Jan.

50Cft

cn

5360

605847

1 «1

50

} 493966

323IQK

140 IQK

1 KQ

8777

[ hSt DO1

Feb.

957366

tn

100

487OOQ232

Mar.

216249232179143

140191364232182

156138120106106

95Ql

9191

idn

91ft

216O/IQ

94Q

232

216200170143133135

Apr.

153140125148135

123116155285216

176153138123111

106104958783

81757571

116

11895839589

Majr

8585797570

6863605556

5050465046

4647424091

7055Aft5044

40403636m38

June

61321200138106

95 -87«9837a5852<35866

64<;n

- 474236

3634354781

6355433534

July

3130262626

2626252422

2222182120

2021

- 243126

2319222422

191615151617

Aug.

1516181716

1512141814

1215287550

76181857350

3634393960

665344363127

Sept.

2540583840

128113

. 796358

4943393432

3129282827

2624232622

2133303634

NOTE. Stage-discharge relation affected by ice Dec. 25-31, Jan. 1, 9-11, 13-15, 28-30, and Feb. 4-24; discharge for these periods estimated from study of discharge measurement, weather records, and com parison with records on Pequest River at Pequest.

Monthly discharge of Flat Brook near Flatbrookville, N. J., for the year endingSeptember 30, 1926


Month

October _____________________November ..................................

Aprfl..........................................May _________________________June _______________________July...........................................August _______________________September ___ ..............................

The year.. ..............................


Maximum

140 364 444 323 487 364 285 91

321 31

181 128

487

Minimum

15 30

91 71 34 34 15 12 21

12

Mean

36.7 107 129 83.0

108 175 122 54.7 75.3 22.4 40.8 41.9

82.7

Persquare mile

0.565 1.65 1.98 1.28 1.66 2.69 1.88 .842

1.16 .345 .628 .645

1.27

Run-Off in inches

0.65 1.84 2.28 1.48 1.73 3.10 2.10 .97

1.29 .40 .72 .72

17.28

PAUimS Kill AT BIAIRSTOWW, N. J.

LOCATION. At highway bridge in Blairstown, Warren County, 200 feet abovemouth of Blairs Creek and 9 miles above mouth.

DRAINAGE AREA. 128 square miles (measured on State topographic map). RECORDS AVAILABLE. October 20, 1921, to September 30, 1926.


GAGE. Water-stage recorder on right bank just above highway bridge; inspectedby Mrs. G. W. Croupe.

DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Channel of sand and gravel. Control is, riffle of small

boulders at downstream side of bridge. EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage

recorder, 5.76 feet at 6 p. m. February 26 (discharge, 1,170 second-feet);minimum stage, 1.37 feet} at 4 a. m. July 8 (discharge, 6 second-feet).

1921-1926: Maximuiia discharge recorded, about 1,800, second-feetMarch 8, 1922, and Febrjiary 12, 1925; minimum stage, 1.34 feet at 3 p. m.November 1, 1922 (discharge, about 2.8 second-feet).

ICE. Stage-discharge relation affected by ice. REGULATION. Distribution of flow affected by storage in Swarfcswood Lake and

by water-power plant abpve station. ACCURACY. Stage-discharge relation probably permanent except when affected

by ice. Rating curve well denned. Operation of water-stage recordersatisfactory except as indicated in footnote to table of daily discharge.Daily discharge ascertained by use of discharge integrator, corrected forice effect during winter. Records good.

The following discharge measurements were made:February 10, 1926: Gage ifieight, 2.57 feet; discharge, 118 second-feet (stage-

discharge relation affected by ice).April 20, 1926: Gage height, 2.46 feet; discharge, 145 second-feet.

Daily discharge, in second-feet, of Paulins Kill at Blairstown, N. J., for the year ending September 30, 1926

Day

I-.. .........2...............3..... ___ ....4...... ........5...............

,.......7........... ..8..............9...............10...............

11 .. .. .12 . ...........13-.- .14........ ......15 . ......... -.

16.... ...........17...............18.., ........19.... ...........20,........ ...

21 _ ....-.-.-...22 ............23 ............24 ............25. . ...

26.-...... ...27...............28...............29.. . 30J. _ ...31. ...........

Oct.

4340585974

7568605862

5861585573

8884797364

62596869184

340244187152135130

Nov.

127124124113104

112120128176155

136

284344270

396410OOQ

285256

234214200182165

159203

213177

Deci

M20131155053^

694580463408344

24276

24l2j3

199188

159159

168209192164140

13011010010095po

Jan.

90909093101

11410988'80

75

7070656560

6070919605177

386OQfi

334

200153

130120120

Feb.

17214212985110

110100100100100

100100106118204

269232197433520

411313254222413

1,030861

Mar.

492550580410295

301469

1,020500380

300260240220200

190180170184288

384346

346334

310286262228217217

Apr.

250228206239217

206195263491384

310262239217206

184174153149139

129125122120153

158132126140127

May

128120116131120

107100938782

S377767374

74756963120

9581746262

595456525751

June

70274204143115

100961049383

7271737583

8875686258

5351545979

8580686858

July

4535484142

5056325139

3540332828

2625304627

3234353433

483433193841

Aug.

3635343422

2420222220

1521306193

10714912510978

6362526168

847258473637

Sept.

3687145124128

286274206153133

11094847872

6866626258

5350495253

666865VO68

NOTE. Stage-discharge relation affected by ice Dec. 25-31, Jan. 9-17, 28-30, and Feb. 5-12; gage-height record missing Mar. 9-18; stage-discharge relation affected by stones placed on control July 9 to Sept. 30. Discharge for these periods estimated by study of discharge measurements, weather records, and by com parison with records of flow of near-by streams.


Monthly discharge of PauUns Kill at Bladrstown, N. /., for the year endingSeptember 80, 1926


Month

November ____________________

January .......................................

March .........................................April.. _____________________May. ______________________June _ . ____________________JulyAugust _____________________


Maximum

340 410 694 605

1,030 1,020

491 131 274

56 149 286

1,030

Minimum

40 104 90 60 85

170 120

51 51 19 15 36

15

Mean

94.2 205 256 161 267 339 201 82.9 88.7 36.7 54.7 97.3

156

Per square mile

0.736 1.60 2.00 1.26 2.09 2.65 1.57 .648 .693 .287 .427 .760

1.22

Kun-off in inches

0.85 1.79 2.31 1.45 2.18 3.06 1.75 .75 .77 .33 .49 .85

16.58

PEQUBST RIVER AT PEQUEST, IT. J.

LOCATION. At Pequest station, Warren County, on Lehigh & Hudson River Railroad, 100 feet above railroad bridge, 300 feet below mouth of Furnace Brook and 6% miles above mouth of Pequest River.

DRAINAGE AREA. 108 square miles (measured on State topographic map).RECORDS AVAILABLE. November 7, 1921, to September 30, 1926.GAGE. Vertical staff attached to face of former bridge abutment on right

bank 100 feet above railroad bridge. Water-stage recorder on right bank 10 feet below staff gage put into operation June 22, 1926. Gage read and recorder inspected by Marcus Beers.

DISCHARGE MEASUREMENTS. Made by wading or from footbridge at gage.CHANNEL AND CONTROL. Channel of fine gravel; control is riffle of large stones,

probably remains of old diversion dam 50 feet below gage.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 2.78 feet at

5 p. m. February 28 (discharge, 637 second-feet); minimum stage, 0.31 foot 4 to 8 a. m. August 7 (discharge, 16 second-feet).

1921-1926: Maximum stage recorded, 2.91 feet at 5. p. m. March 19, 1923, and February 18, 1925 (discharge, 694 second-feet); minimum stage, 0.31 foot September 20 and 21, 1924, and August 7, 1926 (discharge, 16 second-feet).

ICE. Stage-discharge relation probably not affected by ice.ACCURACY. Stage-discharge relation probably permanent. Rating curve well

defined above 20 second-feet. Staff gage read to hundredths twice a day until June 22, 1926; water-stage recorder operated satisfactorily aft'er that date. Daily discharge ascertained by applying mean daily gage height to rating table for period when staff gage was used; when water-stage recorder was in operation discharge was ascertained by means of discharge integrator. Records good.

The following discharge measurements were made on April 20, 1926: Gage height, 1.19 feet; discharge, 129 second-feet. Gage height, 1.12 feet; discharge, 114 second-feet.

DELAWARE RIVER BASINQLA 215

Daily discharge, in second-feet, b/ Pequest River at Pequest, N. J., for the year endingSeptember SO, 1926

Day

l.... _ .......2. ____ .......3 _ ........ ....4. ___ .. .......5... _______ .6...............7..... ..........8 __ ...... __ .9 10.. 11........... ....12. ____ . __ .13 .........14.... __ .......15 16...... .........17...... .........18.. ..........19.. ..........20 21.. 22 23 24.......... .....25 26. ...........27 __ .....28 29.. ..........30 31.

Oct.

424149506568605560565855484069807779716562556065172248196150129119109

Nov.

10910910910091109109119150129109100277277234293293262221

184172161

140140161208184150

Dec.

16117224836036036034332627724819622120819617217216115014014(1

150172161

i4du462no10991si

Jan.

8684109100109119109878491899172827977711503432771Qfi293221

14014012910966109109

Feb.

1291191005374911001001001009191

91150184161150414326309293234184326565508527

Mar.

605565470414360262378470396396378

221184196172161150161

1QR208208221208208208184172161161

Apr.

184161150184161150150196262208184172161150140140129128109110

ioa100100100129119109109109100

May

10010091100918282797777776268716671686259686256616050525552534656

June

62607162545354625353524948506556554444373336374ft403943353633

July

29332824294034333330303228282729273263533933313334333326262725

Aug.

26273025222422202321212641486579140109786454484952-55584846394134

Sept.

3856129109Q1

1721841501199184746159586254534850474445 45465956546872

I

Monthly discharge of Pequest River at Pequest, N. J., for the year endingSeptember 30, 1926

Month

November.. _ ........... ....

April . . .

June ... . __________ . __

September ........... ...............^The year ___________


Maximum

248 293 360 343 565 605 262 100 71 63

140 184

605

Minimum

40 91 62 66 53

150 100 46 33 24 20 3820

Mean

82.0 168 192 128 202 275 144 69.5 48.5 32.3 46.3 75.9

122

Persquare mile

0.759 1.56 1.78 1.19 1.87 2.55 1.33 .644 .449 .299 .429 .703

1.13

Run-off in inches

0.88 1.74 2.05 1.37 1.95 2.94 1.48 .74 .50 .34 .49 .78

15.26

BEAVER BROOK NEAR BEI7IDERE, N. J.

LOCATION. 500 feet above mouth of brook in Pequest River and 2 miles east of Belvidere, Warren County.

DRAINAGE AREA. 36 square miles (measured on State topographic map).RECORDS AVAILABLE. May 24, 1922, to September 30, 1926.GAGE. Water-stage recorder on right bank; inspected by R. J. Hildebrant.DISCHARGE MEASUREMENT^. Made by wading or from highway bridge one-

fourth mile above gage.CHANNEL AND CONTROL. Gravel and ledge rock. Control is solid rock outcrop

25 feet below gage, improved by having rough cavities filled with concrete.


EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 3.63 feet at 4 a. m. February 26 (discharge, 623 second-feet); minimum stage, 1.21 feet August 9 and 10 (discharge, 3.3 second-feet).

1922-1926: Maximum stage recorded, 3.83 feet at noon March 17, 1923 (discharge, 760 second-feet); minimum stage, 1.21 feet September 4, 5, and October 18, 1923 (discharge, 3.1 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Daily distribution of flow often irregular because of operation of

small gristmills some distance upstream.ACCURACY. Stage-discharge relation permanent except when affected by ice.

Rating curve well defined between 5 and 500 second-feet. Operation of water-stage recorder satisfactory except for two short periods. Daily dis charge ascertained by applying to rating table mean daily gage height cor rected for ice effect during winter or, for days of considerable fluctuation, by averaging discharge for intervals of the day. Records good.

Discharge measurements of Beaver Brook near Belvidere, N. J., during the year ending September SO, 1926

Date

Nov. 12... ......Feb. 10 .........Apr. 20 .........

Gage height.

Feet 2.01

2.241.91

Dis charge

Sec.-ft. 45.738.334.8

Date

Do.........

Gage height

Feet 1.421.40

Dis charge

Sec.-ft.7.56.7

Date

July 9.. ........Aug. 27.........

Gage height

Feet 1.321.46

Dis charge

Sec.-ft. 5.39.1


Daily discharge, in second-feet, of Beaver Brook near Belvidere, N* J., for the year ending September 30, 1926

Day

1.. ____ .....2 _______ ...3. .... ....4 ...............5 ... ... .... ..6....... ........7. .. .........8 ___ . ........9.. ..........10 . 11 ______ . ....12...............13. . 14... ............15 _ ............16..-. .......17.... ...........18 ...............19.... ...........2021 ______ . ....22 __ .... .......23 ...............24 ...............25 ...............26... ___ ... ....27 _______ ...28....... .....29 ___ .........30 ...............31 ...........

Oct.

241416142320251515181515151429283026

42

Nov.

38363634323030484438345089897610010086787466615649474764655346

Dec.

52578811714119517414111997847869625342413736364450484236342430302828

Jan.

28263230343934342728262422222222203614611474100756055504438264038

Feb.

454140194240363838383636343254626154

13710456353131189540246134

.

Mar.

10013210659565412720710289766660S45249444445505554556056565952474447

Apr.

524846504744445986726561565452474644423936343533413831333731

May

29282933272525222020191918171916171714181515131313121111111013

June

151919161413131514109.11010101513129.58.97.77.39.27.69.1

108.69.18.47.06.7

July

7.27.15.65.44.88.49.46.95.65.96.25.45.26.25.66.16.67.29.58.48.76.15.06.87.05.35.14.54.85..25.4

Aug.

4.64.34.65.34.63.93.83.93.64.04.04.46.89.2142734201612108.79.19.513119.57.66.56.26.2

Sept.

5.619392425616042363225232118151514131212119.5

1111131914122319

NOTE. Stage-discharge relation affected by ice Jan. 10-17,23-30, Feb. 6,9-12; gage-height record missing Oct. 19 to Nov. 11 and Dec. 19 to Jan. 3. Discharge for these periods estimated from study of 1 discharge measurement, weather records, gage-height graph, and by comparison with record of gage height on Fequest Eiver at Pequest.


Monthly: discharge of Beaver Brook near Belvidere, N. J., for the year endingSeptember 80, 1926


Month

December. ___________ ... ______

February ____________________

April,......_...___.__.___..___..,_._._________Mav

July.................................r.........August _ . __ . _________________


Maximum

100 195 146 640 207

86 33 19 9.5

34 61

540

Minimum

14 30 24 20 19 44 31 10 6.7 4.5 3.6 5.6

3.6

Mean

29.1 56.5 68.2 44.1 80.3 69.6 46.8 18.4 11.2 6.34 9.27

21.8

38.2

Per square mile

0.808 1.57. 1.89 1.22 2.23 1.93 1.30 .511 .311 .176 .258 .606

1.06

Run-off in inches

0.93 1.75 2.18 1.41 2.32 2.22 1.45 .59 .35 .TZO .30 .68

_14.38

MUSCONETCONG RIVER NEAR HACKETTSTOWN, N. J.

LOCATION. 500 feet above Delaware, Lackawanna & Western Railroad bridge, half a mile below Saxtpn Falls Dam of Morris Canal, and 3 miles above Hackettstown, Warren County.

DRAINAGE AREA. 70 square miles (measured on State topographic map).RECORDS AVAILABLE. September 24, 1921, to September 30, 1926.GAGE. Water-stage recorder on left bank 500 feet above Delaware, Lackar

wanna & Western Raiboad bridge; inspected by William Gaviller.DISCHARGE MEASUREMENTS, Made from railroad bridge or by wading.CHANNEL AND CONTROL. Channel of coarse gravel. Control is coarse gravel

riffle 75 feet below gage; probably permanent.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage re

corder, 3.54 feet at no^on March 9 (discharge, 442 second-feet); minimum stage, 1.11 feet at 4 p. m. May 21 (discharge, 4 second-feet).

1921-1926: Maximum stage recorded, 5.12 feet at 1 p. m. February 12, 1925 (discharge, about 1,080 second-feet); minimum stage, 1.05 feet at 5.30 p. m. May 1, 1922 (discharge, about 3 second-feet).

ICE. Stage-discharge relation affected by ice.DIVERSIONS. Lake Hopatqong, about 9 miles above this station, was formerly

the source of supply fir the Morris Canal. Navigation was abandoned in the canal by act of the State legislature March 13, 1924, after which date there was no diversion]

REGULATION. Distribution of flow is affected by operation of sluice gates at Lake Hopatcong and possibly at other structures of the former Morris Canal. Monthly discharge corrected for storage in Lake Hopatcong; not corrected prior to October 1, 1925.

ACCURACY. Stage-discharge relation permanent except as affected by ice. Rating curve well denned above 10 second-feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage heights, determined by inspection of recorder charts, with corrections for effect of ice during winter; or discharge for days of considerable fluctuation, was obtained by averaging discharge for intervals of the day. Records good.


Discharge measurements of Musconetcong River near Hackettstown, N. J., during the year ending September SO, 1926

Date

Oct. 24.........Feb. 11

Gage height

Feet 1.60

«2.66

Dis charge

Sec.-ft. 34.977

Date

Apr. 21 . _Sept. 14.. ......

Gage height

Feet 1.992.16

Dis charge

Sec.-ft. 78

105

Date

Sept. 14........

height

Feet 2.16

Dis charge

Sec.-ft. 102

o Stage-discharge relation affected by ice.

Daily discharge, in second-feet, of Musconetcong River near Hackettstown, N. J., for the year ending September SO, 1926

Day

1 2..... ..........3 4. ___ . .......5

6. ___ .. __ .7...... __ ....8.. 9...............10.. .............

11 ...... 12 __ . __ . ....13 14 15 ..........

16........ ....17......... _ ...18...............19 _____ . ___ .20 ............

2122 ______ .23.... ........24...............25... .......

26 _ . ___ .27 . ...2829...............30 __ ...... .....31

Oct.

3223424258

5238523247

4544493366

6866635545

3829414174

13210077706466

Nov.

6464595963

6463687568

6563166180150

226214180160141

13212311510092

92107132115107

Dec.

107115160276263

276250250214191

170160150141132

10711511510078

74100107100100

70

Jan.

6463636573

78777371

65

60

595971170132

115141141

85

72

Feb.

928578

75

90

225225

191170

I 140

3483339<>n

Mar.

250238238214191

170202333276250

225214202202170

170115115160170

191170160160160

150141132115115115

Apr.

9285747877

7290160238191

214214170115107

10092929285

7878677392

9278767773

May

7167656663

625544434,14039384043

4545413843

2614303634

323030«Q

2628

June

3141534336

3345323630

2726282945

5341272424

2321232424

2424211817

July

1716161514

1515151516

1717171616

1616185657

4n36242326

332622201019

Aug.

1817161616

1412121213

141733£074

851411078567

K7

5453fi763

66finKR

624641

Sept.

3571

141115115

191202180170160

14112310710092

7873767268

7073777885

1007885100O9

NOTE. Stage-discharge relation affected by ice Dec. 26-31, Jan. 10-14, 24-30, Feb. 4-18, and 23-25; dis charge based on one discharge measurement and study of weather records, gage-height graph, and record of flow near Bloomsbury.

DE]LAWARE RIVER BASIN 219

Monthly discharge of Musconetcong River near Hackettstown, N. J., for the year ending September 80, 1926


Month

July........ ..................


Observed

Maximum

132226 276 170 348 333 238

71 53 57

141 202

348

Minimum

2359

59

115 67 14 17 14 12 35

12

Mean

54.3 111 138 82.8

131 184 107 42.1 30.8 22.2 45.9

105

87.5


Mean

41.6 137 149 87.5

152 212 116 34.7 25.7 27.1 55.7 97.3

94.1

Per square mile

0.594 1.96 2.13 1.25 2.17 3.03 1.66 .496 .367 .387 .796

1.39

1.34

Run-ofl in inches

0.68 2.19 2.46 1.44 2.26 3.49 1.85 .57 .41 .45 .92

1.55

18.27

NOTE. No correction for evaporation.

MUSCONETCONG RIVER NEAR BLOOMSBURY, N. J.

LOCATION. -At highway bridge \Yz miles above Bloomsbury, Hunterdon County, and 9 miles above mouth.

DKAINAGE AKEA. 143 squar^ miles (measured on State topographic map).RECORDS AVAILABLE. July 4, 1903, to March 31, 1907; July 26, 1921, to Sep

tember 30, 1926.GAGE. Water-stage recorder on right bank just below bridge; inspected by

Howard Person.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Channel of gravel. Control is gravel riffle 150 feet

below gage. Banks will be overflowed at high stages.EXTREMES OP DISCHARGE . j-Maximum stage during year, from water-stage

recorder, 5.43 feet at 1Q p. m. February 25 (discharge, about 1,800 second- feet); minimum stage, 0.71 foot at 11 p. m. August 10 (discharge, 22 second- feet; stage-discharge relation affected by tree on control).

1903-1907; 1921-1926: Maximum stage recorded, 8.0 feet October 10 or 11, 1903 (discharge, not determined); minimum discharge, 21 second-feet November 19, 1921.

ICE. Stage-discharge relation affected by ice.DIVERSION AND STORAGE. Lake Hopatcong at the head of Musconetcong River

was formerly the source of supply for Morris Canal. Through this canal water passed westward to Delaware River at Phillipsburg and eastward down the Passaic Valley to Newark. Water left in Musconetcong River, by the canal was measured by the gaging station near Hackettstown. Navi gation in the canal was abandoned by act of the State legislature March 13, 1924, when diversion was discontinued. Gates at the outlet of the lake have since been used to regulate the flow of the river to some extent. Monthly discharge after October 1, 1925, corrected for storage in Lake Hopatcong; not corrected prior to that date.

63435 30 15


REGULATION. Distribution of flow affected by several small water powers abovethe station.

ACCURACY. Stage-discharge relation practically permanent except when affectedby ice. Rating curve fairly well defined between 50 and 1,000 seeond-fe£t.Operation of water-stage recorder satisfactory. Daily discharge ascertainedby use of discharge integrator. Records good.-

The following discharge measurements were made: April 1, 1926: Gage height, 1.66 feet; discharge, 228 second-feet. July 10, 1926: Gage height, 0.90 foot; discharge, 33.7 second-feet (stage-

discharge relation affected by tree fallen across control).July 10, 1926: Gage height, 0.87 foot; discharge, 41.5 second-feet.

Daily discharge, in second-feet, of Musconetcong River near Bloomsbury, N. J., for the year ending September 30, 1926

Day

l.__ __ .-2... ____ . _ -3_ 4...... ...... ...5

7 __ . _ ... ... .8...... ... -- 9...............10

11. 12... 13 14. .............15

16 17..... ..........18 19...............20.... ........

21 22 23...............24 25, __ ...---...

26 27... ............28, 29...............30. ..-.31. .

Oct.

939096103141

12510999112109

109120102112143

138143129131121

10510494

269

265211187162143148

Nov.

146155141137131.

140148183160

147150486365305

450412351313288

252245

209

20424726423591 &

Dec.

221227411553505

514464440403355

321318299289256

254

232214207

211232232919

210

I 200

194183177

Jan.

165166166173183

' 170

152

157

153

14614ft

140

135133464

265

255333223OQA

203

189186.163160Ifift

202

Feb.

235182175120147

193181169153153

200

276276988451

349293270238860

1,030593407

Mar.

478520401334270

290811769424375

337314292260262

270218211237267

290274268270259

262251234215208218

Apr.

217188169186175

171164276339302

299302282217198

191175171177163

165159148

179

179157158158149

May

143141148135141

130126112104117

104108104110102

107118107107106

10281799693

918887747894

June

10014311910993

861071178991

84778091

129

1091011009392

11198102111105

9685756565

July

6065605560

8075606555

6066576057

675149107103

93806964130

8077726510968

Aug.

5965546055

4949466856

5671

126101128

198256203154132

110107112109121

120113105969689

Sept.

83118177173174

286300266238223

204182

166150139

130122121118125

109

f L£\j

146142129149147

NOTE. Stage-discharge relation affected by ice Jan. 29, 30, Feb. 11 and 12; affected by tree which fell on control, June 27 to Sept. 30; no gage-height record Dec. 26-28, Feb. 13-16, and Sept. 22-25. Discharge for these periods estimated by study of weather records, discharge measurements, and comparison with record of flow for Musconetcong River near Hackettstown.

DEL AWAKE RIVER BASIN 221

Monthly discharge of Musconetopng River near Bloomsbury, N. J., for the year endingSeptember 30, 1926

I Drainage area, 143 square miles]

Month

October _____________

July... ........................


Observed

Maximum

269 i486 553 464

1,030 811 339 |148 143 130

1256 300

1^030

Minimum

90 131 177 133 120 208 144 74 65 49 46 83

46

Mean

133 238 289 198 319 325 199 108 97.4 71.6

102 160

186


Mean

120 264 300 202 340 353 207 100 92.4 76.5

112 152

192

Per square mfle

0.839 1.85 2.10 1.41 2.38 2.47 1.45 .699 .646 .535 .783

1.06

1.34

Run-off in. inches.

0.97 2.06 2.42 1.63 2.48 2.85 1.62 .81 .72 .62 .90

1.18

18.26

NOTE. No correction for evaporation.

ASSUNPINK CREEK AT TRENTON, N. J.

LOCATION. At Chambers Street Bridge in Trenton, Mercer County, \% miles above mouth.

DKAINAGE AKEA. 89 square miles (measured on State topographic map).RECOKDS AVAILABLE. July 20, 1923, to September 30, 1926.GAGE. Water-stage recorder on left bank 50 feet above Chambers Street

Bridge; inspected by engineers of United States Geological Survey.DISCHAKGE MEASUREMENTS. Made by wading or from Monmouth Street

Bridge 400 feet below gage.CHANNEL AND CONTKOL. Channel of sand and gravel. Control is bar of gravel

and large stone placed 40 feet below gage.EXTKEMES OP DISCHAKGE. Maximum stage during year, from water-stage

recorder, 5.45 feet at 11 p. m. February 25 (discharge, about 1,100 second- feet); minimum stage, 1.78 feet June 20, 22, and July 9 (discharge, 5 second- feet).

1923-1926: Maximum stage recorded, 7.85 feet at 4 a. m. April 7, 1924 (discharge, 2,400 seconds-feet); minimum stage, 1.78 feet June 20, 22, and July 9 (discharge, 5 second-feet).

ICE. Stage-discharge relatioii not affected by ice because water is used for con densing at steam power plant just above gage.

REGULATION. Large daily fluctuations in flow at low stages due to water power plants upstream.

ACCURACY. Stage-discharge relation changed during high water in February. Rating curve used through February 25 well defined between 20 and 300 second-feet; curve used thereafter well defined between 10 and 800 second- feet. Operation of water-stage recorder satisfactory. Daily discharge ascertained by use of discharge integrator. Records fair.


Discharge measurements of Assunpink Creek at Trenton, N. J., during the year ending September SO, 1926

Date

Oct. 30-.. ......Dec. 4... .......

Do. Dee. 5 _ ......

Gage height

Feet 2.383.343.263.022.982.78

Dis charge

Sec.-ft. 68

272250201198147

Date

Dee. 9 __ . ....Jan. 22. ........Mar. 30 Mav7 ...

Do...... ......

Gage height

Feet 2.623.572.582.341.972.38

Dis charge

Sec.-ft. 11536711268

75

Date

July 28 __Aug. 13.--......

Sept. 23.. ......

Gage height

Feet 1.864.733.912.36

Dis charge

Sec.-ft.9 1

680

72

Daily discharge, in second-feet, of Assunpink Creek at Trenton, N. J., for the year ending September 30, 1926

Day

23 4 ------

6 _. . ---7_. ---------89.. --------10 ------

13 -------14 . .15-.- ------16 17 18-. - .19 2021 22. 23 24-..-. ....25 26 .. 27 -- 28- 29 ... ... ... ...30- -- .31

Oct.

17202725464948332827154329293842384857424433342063

67

777454

Nov.

485344464252393553464755

233149100141134101786352505546

nc

7361

Dep.

555312723519723119214511793767066665453

494043575861c»7

50384827in

42

Jan.

20253145474950473631474334182929

74

989923412311011092fjn

59

01

AC

Feb.

1681331269663677466665450514753124188158164

430421289190

O1Q

7ft4625

Mar.

2392211701341178523433725720615712710284807271676674818992

inj,Q^

QQ115

onOf!

Apr.

12010810110896868092138131131109968183705044575855556950941031AO

877871

May

6661675654494327304133333039

91153105

1056848455043433433

2139

June

545749463035444440353323164235272832221028272844

3433472827

July

2213121214433492523103017323343323451312422263828524134362727

Aug.

335044403731231648352549

49441433821415814012910395

*928878829080106827155

Sept.

468395696710430814312317212299837061585144445342403941316064334049

Monthly discharge of Assunpink Creek at Trenton, N. J., for the year endingSeptember 30, 1926


Month

April-.......-.............-... ...... .... ..

July .


Maximum

97 233 235 234 704 337 138 153 57 52

494 308

704

Minimum

15 28 19 18 47 66 44 21 10 9

16 31

9

Mean

42.9 69.5 81.4 62.8

204 128 86.8 54.3 34.8 28.2

108 77.8

80.6

Persquare mile

0.482 .781 .915 .706

2.29 1.44 .975 .610 .391 .317

1.21 .874

.906

Run-off in inches

0.56 .87

1.05 .81

2.38 1.66 1.09 .70 .44 .37

1.40 .96

12.31

DELAWARE RIVER BASIN

NORTH BRANCH OF RANCOCAS CREEK AT PEMBERTON, N. J.

223

LOCATION. Near highway bridge at Pemberton, Burlington County, 11 miles above confluence with South Branch.

DRAINAGE AREA. 111 square miles (measured on State topographic map).RECORDS AVAILABLE. September 15, 1921, to September 30, 1926.GAGE. Water-stage recorde:" on left bank 800 feet below highway bridge; in

spected by William Jones.DISCHARGE MEASUREMENTS. Made from highway bridge, from boat near gage,

or by wading.CHANNEL AND CONTROL. Giannel of sand; shitting. Banks are overflowed at

high stages. This station has a channel control.IOE. Stage-discharge relation probably unaffected by ice.REGULATION. Distribution af flow greatly affected by operation of gristmill at

Pemperton and regulation of its pond.ACCURACY. Stage-discharge

poorly defined. Operat tember 23-30. Daily dto mean daily gage height and then applying corrected gage height to base rating. Variable correction determined from periodic discharge measure ments. Records fair.

Discharge measurements of during

relation not permanent. Standard rating curve on of water-stage recorder satisfactory except Sep- scharge ascertained by applying variable correction

North Branch of Rancocas Creek at Pemberton, N. J.f the year ending September 30, 1926

Date

Oct. 1-- .....i........ ..............Oct. 27.... _ -_Nov. 16 . ----- ----------------Dec. 17....... . r .... ................Jan. 17 --- . -.Feb. 23. - - _ Marl 19.... . - .

Jrinfi ISDo.. _ [ .__Do.. -- . [

Aug. 25 . _ Sept. 22_._ . -

Gage height

Mean

Feet 0.46 1.46 2.52 .95

1.19 2.01 1.33 2.28 2.06 .79

1.19 1.24 .96 .51 .73

Rate of change

Ft. per hr. +0. 02

0 0

-.072 +.056 +.033 -.12 0

+.075 +.109 +.08 +.02 -.02 +.021 +.044

Discharge

Measured

Sec.-ft. 56 93

167 66 89

141 99

192 170

84 115 114 91 53 73

Corrected «

Sec.-ft.

71 84

136 108

Ie§81

112

71

a Corrected for changing stage.

Daily discharge, in second-f( N. J., for

et, of North Branch of Rancocas Creek at Pemberton the year ending'September 30, 1926

Day

3 .. .

5--. ...

6 . .7 8 . -----9. ...10-

Oct.

4.Q

709888120

10511210588120

Nov.

7788

98

1027777

98

D«

I<

1j

R884888?13

fl?4591-

12

Jan.

120120112136

1281361289194

Feb.

182213

235

192202172172172

Mar.

259224

192

163213271

259

Apr.

192172172163

163154172

235

May

154154128112136

120105105145120

June

80981059491

988488128154

July

1051028894105

1281201209891

Aug.

12011291SO77

6464889877

Sept

6794136154128

136163163145182

224 SUEFACE WATEE SUPPLY, 1926, PAET I

Daily discharge, in second-feet, of North Branch of Rancocas Creek at Pemberton, N. J., for the year ending September 30, 1926 Continued

Day

11... ............12. 13. 14 15

16. 17 18 1920

21. - ..-.22-. 23 21 25

26 27 28. 29- SO 31

Oct.

777767

88

88911058470

61

94-QQ

128

1057777

Nov.

94105

.,224947

109

1 JC

OS

917067

6794Ql

74

Dec.

120inc

QQ

84

9404

940101

112112112105

OR

112128

120

Jan.

8880847777

on

74

1631 ^4.

271202 I Qo

154136136136120120

Feb.

182

145154247

97194790 r

10 1?

395336

OCQ

OK ft

336000

Mar.

224224172182154

15415414*»

tAK

16314^

154154

1631 t\d

163

Apr.

224213182172182

1721451 jc

128

145i KA

1721 je

213192172128128

May

102105120120163

235247

235192

172

154163145

105102105120

98

June

112948084120

154136

10594

918013691 3

247

224202182154

July

112120

98112145

202182163128105

10291847794

112917774102112

Aug.

6150 '-747098

120136128128120

102105120105102

11210598847470

Sept.

1631451288884

7784747474

7070

80

NOTE. Discharge Sept. 23-30, when gage was not operating, estimated by comparison with record of flow of Great Egg River at Folsom.

Monthly discharge of North Branch of Rancocas Creek at Pemberton, N. J., for the year ending September SO, 1986


Month

July

The year-.-. ... ..... ..... ___ ,...


Maximum

136 247 213 271 395 284 259 247 247 202 136 182

395

Minimum

43 67 84 74

145 136 128 98 80 74 50

43

Mean

90.9 112 114 128 245 185 174 144 125 111 94.6

105

135

Persquare mile

0.819 1.01 1.03 1.15 2.21 1.67 1.57 1.30 1.13 1.00 .852 .946

1.22

Run-off in inches

0.94 1.13 1.19 1.33 2.30 1.92 1.75 1.50 1.26 1.15 .98

1.06

16.51

SUSQUEHANNA RIVER BASIN

SUSQUEHANNA RIVER AT COIIIERSVIIIE, N. Y.

LOCATION. A quarter of a mile below dam and power plant of New York State Gas & Electric Corporation, half a mile north of Colliersville, Otsego County, and 1 mile above mouth of Schenevus Creek.

DRAINAGE AREA. 353 square miles (measured on topographic maps).RECORDS AVAILABLE. July 22, 1924, to September 30, 1926.GAGE. Gurley 7-day graph water-stage recorder on right bank; inspected by

operators from power plant.DISCHARGE MEASUREMENTS. Made from cable 75 feet below gage- or by wading.CHANNEL AND CONTROL. Bed composed of coarse gravel. Control is of the

multiple type approaching conditions of channel control. Control points may be expected to shift under extreme conditions of stage.

SUSQUEHANNA RIVER BASIN 225

EXTREMES OF DISCHARGE. Maximum stage during year, from water-stage recorder, 6.1 feet at 8 a. m. April 10 (discharge, 3,860 second-feet). Mini mum discharge, about 8 second-feet August 19-21.

1924-1926: Maximum and minimum discharges for period were recorded in 1926, as given above.

ICE. Stage-discharge relation not affected by ice.REGULATION. During greater part of year flow of the stream during the day

is completely regulated by power-plant operation. On account of limited storage this regulation can extend only over very short periods.

ACCURACY. Stage-discharge relation permanent. Rating curVe well defined between 25 and 4,000 second-feet. Operation of water-<stage recorder satisfactory except for a few short periods. Daily discharge, except for a few days during which diurnal fluctuations were small, ascertained by aver aging discharge for intervals of the day or, for days of no record, by com putation based on records of plant operation and flow over spillway, as noted in footnote to table of daily discharge. Records good except those based on records of plant operation which are subject to uncertainties.

Discharge measurements of Susquehanna River at Colliersville, N. Y., during the year ending September 30, 1926

Date

Jan. 25 .......

Mar. 31

Gage height

Feet 2.582.582.853.92

Dis charge

Sec.-ft. 483441

1,360

Date

Apr, 13

Gage height

Feet

5.12

Dis charge

Sec.-ft. 3,5802,630

428

Date

July 13 -

A 110 97

height

Feet 1.521.992.00

Dis charge

Sec.-ft. 41.8

199, 192

Daily discharge, in second-feet, of Susquehanna River at Colliersville, N. Y., for the year ending September 30, 1926

Day

1 '- _ _2--.. . ----------3 ... -4.- - 5. ..... ..... -6.-.- . .7. ...........8 .... .... -9 ....... ...10 11--- .12. 13 14-.-

16 17.. -.18 19 20 .21 22 ........23' ...24 25 26 .27 28 .29 30 31 .

Oct.

176224221139293

166

2261991 ^235

263

210262264227OQ1

220183161179K74

1,140810691616

508

Nov..

491574510491KOI

549629701

1,220Q79

717

1,120

1,880

1,9201,6001,4601 QCn

1 2801,0301 inn

907

9941,5001,120949

Dec.

978914907

1,000

1,5402,0101,610

1 9ftfi

1,170

QOe

1 090752710732EGO

460fi4.fi

746

487460

400455

410

Jan.

435410

306375

460OKI

31601 1

3169Ad

01 1

440259

1,1201 000640KQfi

AQR

462079

436484

Feb.

5864544394120.7Q

486320°.oft

349340°.id.Qd.0

QJ K010070280284370O.QO

0.7749°.oeo

°.fiQ

392

471546521

Mar. v

506463454422361424509EOn

' 680(\AQ

COR

498Efifi

358365

070

646K1Q

77°.

1,2001 6601 8302 1 fin1 8801,4601,3401 2001,380

Apr.

1,3001,1801,130987

1,480

3,2403,6203,460q ion

2,7402 7sn3,080

o ocn

1,9201,760

2,4302 fififl

2 7°.n

2 9609 °.fifi

2,0701,9701,820

May

1,7101,5101,5501,350

994851726688

562EftQ

465OQfi

O7 K

498

329QOQ

365400342OQO

284OA7

56271

June

2803903752759S4

2809fi4.

307OKQ

208

269214209ocq

187

2501981801QR

179421331 Qfi

159

July

122137110643687909094100

8770

16787

1121037211287

8452

64869684

89

Aug.

571161629713310215872

13757934218323877111099889

54

1441 EQ

1861Q7

186167111

431

Sept.

559194527567

29561932722149345423734921101 A

19827818514027993 e;1591QQ

365

403437OQO.

ocn

NOTE. Owing to unsatisfactory operation of water-stage recorder, discharge for Oct. 25-27, Dec 5, Jan. 3,16, May 16, and Aug. 10-14, ascertained from records of power-plant operation>and spillway discharge.

226 SURFACE WATEB SUPPLY, 1926, PART I

Monthly discharge of Susquehanna River at Colliersville, N. Y., for the year endingSeptember 30, 1926


Month

October. ____ . _______ ... .............

March ___ __ ...... _ . _ .-April...... ......................... ..... ....May _ - ______ . __ . ___ . _ ... _ _.

July...................................,....!:..

September ______ _ __ . _ . _ ....... __ .


Maximum

1,140 2,050 2,010 1,120

586 2,160 3,620 1,710

390 167 579 691

3,620

Minimum

139 491 405 251 273 358 987

56 42 36 8

52

8

Mean

324 1,070

864 469 388 800

2,250 631 225 97.0

139 297

628

Persquare mile

0.918 3.03 2.45 1.33 1.10 2.27 6.37 1.79 .637 .275 .394 .841

1.78

Run-off in inches

1.06

2i 82 1.53' 1.14 2.62 7.11 2.06 .71 .32 .45 .94

24.14

SUSQUEHANNA RIVER AT CONKLIN, N. Y.

LOCATION. At steel highway bridge just below Conklin, Broome County, 5 miles below Big Snake Creek, and 9 miles above mouth of Chenango River at Binghamton.

DRAINAGE AREA. 2,350 square miles.RECORDS AVAILABLE. November 13, 1912, to September 30, 1926.GAGE. Gurley printing water-stage recorder on left bank just below highway

bridge; inspected by Mrs. Helena M. Smith.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Coarse gravel and boulders; shifts occasionally.EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder,

14.0 feet from 11 p. m. April 9 to 1 p. m. April 10 (discharge, 30,600 second- feet); minimum stage recorded, 2.37 feet from 7 a. m. to 6 p. m. July 27 (discharge, 434 second-feet).

1912-1926: Maximum stage recorded, 18.3 feet on morning of March 28, 1913 (discharge, 52,000 second-feet); minimum stage, 1.32 feet Septem ber 16, 1913 (discharge, 106 second-feet).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation changed slightly during flood of April 10;

affected by ice December 17-21^ December 29 to January 5, and January 11 to March 24. Rating curves well defined. Operation of water-stage recorder satisfactory except for a few short periods. Daily discharge ascertained by applying to rating table mean daily gage height obtained from printed record by averaging hourly gage heights or, for days of considerable fluctuation in stage, by averaging discharge for hourly intervals of the day, except for periods of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records excellent; winter records and estimated records, fair.

Discharge measurements of Susquehanna River at Conklin, N. Y., during the yearending September 30, 1926

Date

Oct. 15 _ ......Jan. 23 _ ......Feb. 28. .....

Gage height

Feet 3.42

»5.84"7.75

Dis charge

Sec.-ft. 1,2804,6105,500

Date

TVTar ^rtApr. 12.........

Gage height

Feet 7.30

11.583.81

Dis charge

Sec.-ft. 7,960

20,6001,760

Date

July 11. ........July 12.........Aug. 19.........

Gage height

Feet 2.472.473.63

Dis charge

Sec.-ft. 483502

1,440



Daily discharge, in second-feet, of Susquehanna River at Conklin, N. Y., for the year ending September 30, 1926

Day

1.. .. .....2. ____ ... ..3.. .............4... ...... ......5...............

6.. .............7...............8...............9...............10..... ._._._

11 ............12...............13...._..........14...............15...............

16... .. ........ ..17...............18...............19........... ...20..............

21...............22........ ........23...............24...............25...............

26 ..... .......27..... ......... .28...............29. ..........30 .. . ..31.... ...........

Oct.

1,2701,1701,1201,1601,240

1,2501,3301,1901,1201,170

1 2601,3101,2401,2301,200

1,1501,1801,2301,3301,400

1,2501,2101,1701,1203,400

8,9209,0006,4004,9oO4,5304,040

Nov.

3,5003,3303,3303,1602,910

2,9103,1604,1607,1007,560

5,7204,7409,230

13, 40014,300

15,20014,60011,0008,7607,800

6,8605,9405,2805,0604,430

3,9504,0407,9808,7606,170

Dec.

4,8404,8405,2808,7608,520

12, 10012, 80010,8008,5207,100

5,5005,1705,1704,5303,950

3,0802,8002,6002,4002,600

2,6004,1905,2803,5902,910

2,7502,0701,6301,5001,4001,400

Jan.

1,4001,4001,5001,7002,000

2,9103,6803,9502,3601,810

1,6001,6001,5001,5001,500

1,6001,8002,2007,0008,000

8,0006,5005,0003,8003,200

2,8002,4002,2002,0002,0002,000

Feb.

3,8005,0004,4003,2003,000

2,8002,8002,4002,2002,000

1,8001,6001,6001,6002,200

4,0003,0001,8002,4004,400

4,2003,4003,0002,8002,200

4,4007,0005,500

Mar.

3,8003,8003,6002,8002,600

2,4002,0002,4003,4003,600

3,0002,6002,2002,0002,000

1,9001,8001,7001,7002,000

4,2007,500

10,00016,00018,400

21,80018,10012,6009,5008,7609,240

Apr.

9,5008,5207,1007,3308,280

9,50010,00016,30028,50030,600

27,50022,20016,00015,00017,000

15,00012,1009,7407,9807,040

6,1506,3709,220

10, 50013, 000

13,50011,0008,4607,2706,590

May

6,3706,1505,3005,3004,690

4,0203,6503,3002,9002,530

2,3902,3202,1201,9801,800

1,6801,5701,4601,4001,620

2,5302,1801,7401,5701,570

1,4601,3501,2601,1801,1901,230

June

1,4002,1802,4602,5301,980

1,6201,5201,5701,8001,740

1,5701,3401,2201,2601,280

1,7401,8601,5701,3501,270

1,090941

1,010992975

916950

1,100992941

July

864992966.822733

622629498462486

510480430700710

688650643550550

480462480456456

456439444793

1,250856

Aug.

966773643622688

695566531492510

492648932

1,1101,460

1,090992

1,3001,6201,090

856856950

1,3001,400

1.6201,8601,5701,2801,070

932

Sept.

873805

1,040916757

7491,7503,0602,3201,620

2,3402,6001,9201,7001,500

1,3001,2001,0601,020

84S

93284S907822725

3,0002,1801,9201,5701,800

NOTE. Discharge Dec. 17-21, Dec. 29 to Jan. 5, and Jan. 11 to Mar. 24 determined from gage heights corrected for backwater from ice by means of two discharge measurements, observer's notes, and weather records. Gage-height record lacking Apr. 13-16, July 13,14,19, 20, Sept. 14-17, and 26; discharge ascertained by comparison with record of flow of Chenatngo River near Chenango Forks. Chain gage readings used Sept. 18-25 and 27-30; water-stage recorder not operating.

Monthly discharge of Susquehanna River at Conklin, N. Y., for the year endingSeptember 30, 1926


Month

April ........ ........ .................. .....

June _______ : _______________July.... .................................


Maximum

9,000 15,200 12, 800 8,000 7,000

21,800 30,600 6,370 2,530 1,250 1,860 3,060

30,600

Minimum

1,120 2,910 1,400 1,400 1,600 1,700 6,150 1,180

916 439 492 725

439

Mean

2,280 6,810 4,860 2,930 3,160 6,050

12,600 2,570 1,440

632 997

1,470

3,800

Per square mile

0.970 2.90 2.07 1.25 1.34 2.57 5.36 1.09 .613 .269 .424 .626

1.62

Run-off in inches

1.12 3.24 2.39 1.44 1.40 2.96 5.98 1.26 .68 .31 .49 .70

21.97


SUSQUEHANNA EIVEE AT HAKRISBURG, PA.

LOCATION. At 15-span highway bridge at Walnut Street, Harrisburg, Dauphin County.

DRAINAGE AREA. 24,100 square miles.RECORDS AVAILABLE. January 1, 1891, to September 30, 1926. Records for

January 1, 1914, to September 30, 1918, and October 1, 1921, to September 30, 1923, are contained in annual reports of the Water Supply Commission of Pennsylvania.

GAGE. Chain attached to upstream side of bridge; attended by employees of the State department of forests and waters and the United States Weather Bureau. Elevation of gage zero, 289.4 feet, United States Geological Survey datum.

DISCHARGE MEASUREMENTS. Made from downstream side of bridge.CHANNEL AND CONTROL. Banks high arid not subject to overflow. Bed is com

posed of gravel and boulders. A low dam 4,200 feet below gage, built in 1916, is the control for all except high stages.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 13.4 feet at 7.15 a. m. February 5 and 6 (discharge, 218,800 second-feet); minimum stage, 3.24 feet at 1 p. m. August 2 (discharge, 4,460 second-feet).

1891-1926: Maximum stage during period, determined from high-water mark by level, 25.7 feet May 22, 1894 (discharge, about 613,000 second-feet); minimum stage, 0.04 foot September 28 and 29, 1900 (discharge, about 2j300 second-feet; includes flow in "Pennsylvania Canal" of about 360 second-feet).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent, except when affected by ice.

Rating curve well defined. Gage read to hundredths twice daily; during high stages more frequently. Daily discharge ascertained by applying to rating table mean daily gage height corrected for ice effect when necessary. Records good.

COOPERATION. Records furnished by Pennsylvania State Department of Forests and Waters.

The following discharge measurements were made:January 15, 1926: Gage height, 4.64 feet; discharge, 10,500 second-feet (stage-

discharge relation affected by ice).September 29, 1926: Gage height, 4.90 feet; discharge, 28,400 second-feet.

Daily discharge, in second-feet, of Susquehanna River at Harrisburg, Pa., for the year ending September 30, 1926

Day

1 ...... ......2.... ........3............4 ....... .....5............

6............7... .........8 ._ ...... .9... .........

10............

11............12............13 _____ ...14............15............

Oct.

6,0005,7006,0005,4005,400

5,9005,8005,6006,0005,800

5,8006,0005,8005,6005.600

Nov.

20,90019,400

15,70015,000

15,00013,60013,60014, 30022,500

29,30033,00040, 90071,00093.000

Dee.

33,000on Qrtn

66, 60088,60088, 60075, 40060,000

40, 90034,90031, 10029.300

Jan.

9 nnn9,500

19 ftfin13,000

16,000

14,00010 nnn

11,00010 0009.500

Feb.

IQ (\f\C\

09 n/ift

38, 000

28,00024,0009fl nnn

18,000

19.000

Mar.

110 00095,00080 00065,' 00055,000

46,00048,00055,00055,00048, 000

40,00036,00032,00032,00030.000

Apr.

64,40062,200

53, 500

51, 40053,500

66,600123, 800

104,00086,40068.800

May

33,00031, 10027,50027,50025,800

24,10022,50022,50020,20018, 600

17, 90015, 70015,00014,30013. 600

June

8,4009,600

10, 90010,900

11, 60012,20012,20010,90010, 200

9,6009,0008,4008,4009.600

July

9,6009,6009,0008,4007,800

7,8009,6009,600

10,2009,600

8,4007,2006,7206,0005,600

Aug.

5,0004,6404,6404,8206,360

6,2406,2405,8005,0004,820

4,6405,0006,3605,6005,800

Sept.

14,30014,30013,60015,70016,400

22,50079,80082,00057, 80045, 100

36,90029,30025,80024,10022, 500

SUSQUEHANNA EIVER BASIN 229

Daily discharge, in second-feet, of Susquehanna River at Harrisburg, Pa., for the year ending September 30, 1926 Continued.

Day

16.. ..........17............18...... ......19 20... .........

2122............23............24.. ...25. --..

26 .........27... .........28-.---.......29 30..- .31... .........

Oct.

6,2407,0807,2007,2007,200

6,7206,9607,2007,2008,400

10,20017,90033,00036,90022,30025, 800

Nov.

86, 40084,200

66,60053,500

45,10040,90034,90029,30027,500

25,80024,10024,10025,80029,300-

Dec.

27,50024,10022,50020,20018,000

16, 00015,00016,00018,00019,000

19,000

12,0009,0008,5008,500

Jan.

10,00012,0001'4,00019,00032,000

70,00085,00070,00055,00040,000

32,00026,00022,00019, 00018,00018,000

Feb.

24,00028,00032,00042,00050, 000

50,00048,00046r OOO50,00060,000

80,000110, 000115, 000

Mar.

28,00026,000

22,00022, 000

29,30043,00079,'800

112,800148, 000

156, 800

141, 400106, 20082,00068,800

Apr.

60, 00055,60053,50049,30040,900

34,90033,00029,30027,50031,100

40,90049,30051,40045, 10038,900

May

12,900

11, 60011, 600

10, 90010,90010,20010,20010, 900

10,900

9,6009,0008,4008,400

June

11,60027,50029,30022, 50020,900

17,900

13,600'12,20012,200

11, 600

10,90010,90010,200

July

5,8006,0006,0005,6005,600

5,800

5,1005,2005,200

5,8005,6005,2004,8206,1205,800

Aug.

10,20015,00029,30029,30031,100

29,30022,50020., 96020,90024,100

25,80033,00029,30024,10020,90017,900

Sept.

18,60016,40015,00012,90012, 200

11,60010,9009,600

10, 90010,200

12,20011,60020,20027,30027,500

NOTE. Stage-discharge relation affected by ice Dec. 20 to Mar. 20; discharge estimated for this period based on study of discharge measurement, weather records, gage-height graph, and observers' notes and by comparison with records of flow of North Branch of Susquehanna River at Danville, West Branch of Susquehanna River at Williamsport, and Susquehanna River at Sunbury and at Holtwood.

Monthly discharge of Susquehanna River at Harrisburg, Pa., for the year endingSeptember 30, 1926


Month

April ..........................................

July..... ............... .......................

The year ___ , ______ _______

Discharge in isecond-feet

Maximum

36, 900 93,000 88,600 85,000

115,000 163,600 141, 400 33,000 29,300 10,200 33,000 82,000

163, 600

Minimum

5,400 13,600 8,500 9,000

18,000 22,000 27,500 8,400 8,400 4,820 4,640 9,600

4,640

Mean

10,000 37, 000 32,300 23,600 41, 700 67, 100 60,400 16,200 13,000 6,910

15,000 24,200

28,800

Per square mile

0.415 1.54 1.34 .979

1.73 2.78 2.51 .672 .539 .287 .622

1.00

1.20'

Run-off in inches.

0.48 1.72 1.54 1.13 1.80 3.20 2.80 .77 .60 .33 .72

1.12

ie.2i

UNADILLA RIVER NEAR NEW BERLIN, N. Y.

LOCATION. At steel highway bridge a quarter of a mile below mouth of ShawlerBrook, \}i miles north of New Berlin, Chenango County, and 2 miles abovemouth of Wharton Creek.

DRAINAGE AREA. 192 square miles (measured on topographic maps). RECORDS AVAILABLE. July 1, 1924, to September 30, 1926. GAGE. Staff gage in two sections on right bank; the lower inclined, the upper

vertical; read by J. T. Gaffney.DISCHARGE MEASUREMENTS. Made from cable or by wading. CHANNEL AND CONTROL. Control composed of gravel; probably subject to shift.

During the summer backwater may be expected from weed growth in thechannel.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.0 feet at6 p. m. April 9 (discharge, 3,000 second-feet); minimum stage, 1.34 feetat 7 a. m. July 25 (discharge, 22 second-feet; corrected for backwater fromaquatic growth).


1924-1926: Maximum stage recorded, 7.6 feet February 12, 1925 (dis charge, 3,750 second-feet); minimum discharge, about 18 second-feet

' September 1, 1924; corrected for backwater from aquatic growth.ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation affected by backwater from ice or from

aquatic growth throughout most of the year. Standard rating curve well defined between 50 and 3,000 second-feet. ' Gage read to hundredths twice daily. Daily discharge October 27 to December 15 and March 21 to May 31, when there was no backwater effect, ascertained by applying mean daily gage height <to rating table or, for days of considerable fluctua tion in stage, by drawing a gage-height graph on basis of the two daily gage readings and averaging discharge for intervals of the day. For the remain der of the year, during which there was backwater from ice or from aquatic growth, daily discharge ascertained as indicated in footnote to table of daily discharge. Records fair.

Discharge measurements of Unadilla River near New Berlin, N. Y., during the yearending September SO, 1926

Date

Jan. 24.........Mar. I........Mar. 31.. ......

Gage height

Feet °2.96°2.43

4.17

Dis charge

Sec.-ft. 337

889

Date Gage height

Feet ff. 795.28

" 1.88

Dis charge

Sec.-ft. f 2, 780

1,500126

Date

July 13.........Aug. 26 ......

Gage height

Feet "1.86"2.70

Dis charge

Sec.-ft. 106239

" Stage-discharge relation affected by ice.* Stage-discharge relation affected by aquatic growth.

Daily discharge, in second-feet, of Unadilla River near New Berlin, N. Y.,for the yearending September SO, 1926

Day

1 __ .2 ....3......... . . .4 _ .... .5..............6 __ ...........7 ...... ...8..............9 _ ....

10_._ 11 __ ..12........13 _ .....14............15 __ .

16 ...........17 ...... .18......19________ .20........ ...21 22.... .23.......24........ .25 26 ..... . .27 __ .28 29. . .SO SI- - ...

Oct.

200280

200200180180240260

260240

200240

240

200inn

10 A

1,3001,100

9606055684Q7431

Nov.

416

40034134141600 K

CCQ

685532431416

1,5302 f\A{\

1,960

1,2101,010

860770685cne

5684Q7

463

7041,350

860605

Dec.

568

497

79 c

1,7701,5201,010

KCQ

568cooJ01

341onn

280260

260340CCA

44ft

340OAA

260260220

200200

Jan.

IQfl

180180190220450ocn

260240

200OAA

ion

1 fift170

1,000oftft7KA

400qcnOAA

26024099ftion180190

Feb.

qnn

260oon

170160

160160

ion

130

160i en

12011014ft

190

130120240320

Mar.

260

2402202001 Qft

170220260260200inn

1601 CA

10A

ion

1501903414Q7860

i oon

1 3901,450

910770770910

Apr.

OAK

KCQ

01 K

8601,0101 QAft

2 SQft

2,7802 480i sfin1 590

1,9601 AKf\

86079<i

645910

1,270

1,7301 °,Qft

79e

645685

May

497

00 K

317OAA

9^0

233000

99ft100

147

1 00

000

1001 00

1 KA

f 10113QC

90997174

119

June

140340

170120

100ion

130100

Oft

or

100200

1 K A

100

on70

Oft

100220170100420

July

120100

OA

709075

110100100

QK

en

65

38484226OO

00

00

7e

340160

Aug.

9590

120

85808575656070

260i fin1 cf\

1201008080' 70

55

OQfl

340260190

11010085

Septi

65656050

360950650380480

1,300800550440340300260240220220

160140140

600ODfl

280280OAA

NOTE. Discharge Oct. 1-26 and June 1 to Sept. 30 determined from gage heights corrected for backwater effect from aquatic growth by means of three discharge measurements. Discharge Dec. 16 to Mar. 20 determined from gage heights corrected for backwater effect from ice by means of two discharge measure ments, observer's notes, and weather records.

STJSQUEHANNA RIVER BASIN 231

Monthly discharge of Unadilla River near New Berlin, N. Y., for the year endingSeptember 30, 1926


Month

December. _ ____ ____________ ..

March ______________________April.... ......... ........... ..................

July....,.. .................................

The year _________________


Maximum

1,300 2,040 1,770 1,000

320 1,450 2,890

605 420

340 340

1,300

2,890

Minimum

140 341 200 160 110 130 568

71 65 26 55 50

26

Mean

343 768 517 306 176 460

1,230 220 147 95.1

126 357

395

Persquare mile

1.79 4.00 2.69 1.59 .917

2.40 6.41 1.15 .766 .495 .656

1.86

Run-off in inches

2.06 4.46 3.10 1.83 .95

2.77 7.15 1.33 .85 .57 .76

2.08

2. 06 I 27. 91

CHENANGO RIVER NEAR CHENANGO FORES .N. T.

LOCATION. \% miles below Chenango Forks, Broome County, and mouth of Tioughnioga River and-\\% miles above Binghamton.

DRAINAGE AREA. 1,490 square miles (measured on topographic maps).RECORDS AVAILABLE. November 11, 1912, to September 30, 1926.GAGE. Gurley printing water-stage recorder on left bank; inspected by Erastus

Ingraham.DISCHARGE MEASUREMENTS. Made from cable 300 feet above gage or by

wading.CHANNEL AND CONTROL. Sand, gravel, and small cobblestones; practically

permanent.EXTREMES OF DISCHARGE. Maximum discharge recorded, 20,100 second-feet

from 11 p. m. April 9 to 4 a. m. April 10 (gage height, 10.2 feet); minimum stage, 2.60 feet from 7 p. m. July 28 to 10 a. m. July 29 (discharge, 295 second-feet).

1912-1926: Maximum stage recorded, 13.7 feet on afternoon of March 27, 1913 (discharge, 35,500 second-feet); minimum stage, 2.20 feet several times in August and September, 1913 (discharge, 92 second-feet).

ICE. Stage-discharge relation seriously affected by ice.ACCURACY. Stage-discharge relation changed slightly during ice break-up in

March; affected by ice December 16-21 and December 28 to March 24. Rating curves well defined below 15,000 second-feet. Operation of water- stage recorder satisfactory. Daily discharge ascertained by applying to rating table mean daily gage height obtained from printed record by averag ing hourly gage heights or, for days of considerable fluctuation in stage, by averaging discharge for hourly intervals of the day, except for period of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records excellent; winter records fair.

Discharge measurements of Chenango River near Chenango Forks, N. Y., during the year ending September 30, 1926

Date

Feb. 27

'Gage height

Feet 3.38

«8.34 8.62

Dis charge

Sec.-ft. 1,0201,3803,000

Date

Mar. 30 Apr. 13 Apr. 18

Gage height

Feet 6.117.395.95

Dis charge

Sec.-ft. 5,960

10,3006,110

Date

July 12-. -Aug. 18...

Gage height

Feet 3.V282.963.16

Dis charge

Sec.-ft. 814'590764

Stage-discharge relation affected by ic».


Daily discharge, in second-feet, of Chenango River near Chenango Forks, N. Y., for the year ending September 30, 1926

Day

1 2 .3... ............4 .5. ..............

6 ............78... .. . .9...............

10 ..

11--.--.-.....-.

13.. .... ......14 15. -

16. .17....... .18 ... -------19 20

21 22 23 ------24 --------25 ---------

26 27 28 - 29... -------30 31

Oct.

638726

1,080994

1,030

9101,200

1,200

1,1001,1001,000

1,0,01,520

1,150

1,0601,020

982946

5,040

9,940

3,1002,720

Nov.

2,3502 ,OfiA

2,0001,820

o OKA

3,090

3,300

2 con

8,440

10 4on

IA cnn

e oon

4,720

4.1503,6103,4003,1002,720

4,080

5,700

Dec.

3,3003,710

7,310

i n ftnn9 040

5,4504,150

3,8203 70A

3,500

2 KQA

2 2002,000

i Qfin1,700

4,100

2 0rn

1,440

1,100

1,000

Jan.

1,0001 AflA

1,100i 9nn1,600

2 QAA

2 6001,7001 Qfin

1,200

1,1001,1001,000i nnn1,100

1 2001,400

7 CAn

6,500

4 0AA

2 200

1,600

i Qnn

1,200

1,900

Feb.

3,400

3,4002,400

2 AAA

9 nnn1 C fini ^nn1 QAfl

1,200950QKA

1,0002 200

2,4001 C 00MOO2,0002,800

2 A(\f\

1,400

1,100

3 nnn2 <>nn

Mar.

2 000

2 400

1,400

i °.nn

2 400o onn

1,7001,400

1,100

1,100

1,3001,200

4,0006,000

11 00013,000

17,000U 7AA

6,3106,7208,180

Apr.

7 8806,1805,210

7,580

7 con

14, 800TO 7nn

10 inn9,7609,760

11,100

9 4407^580

4,090

3,8806,050Q AQ(\

7,580191 no

10,700

4,4203,880

May

3,7803,5703,5703,080

2,6202,3602 1 nn

1,3101,220

(Wd

1,400

1,3201,080

QQ4

888

811758737706695899

June

1,1401,730i *\fin

1,030

QQQ

QQQ

888

768676706716Q^J.

1,150

833770

600564

591

7 fidi <?on1,070

77Q

657

July

910811686600519

478

486AZA

430

502COO

610

494438423416

374360340340340

32831430S334

1,1401,160

Aug.

790666

888666

555519928

758

fi4S

628

1,2501,070

888

748706648

628768

1,1801,9402,190

1,760

1,280i noft

858768

Sept.

686638600564

1,040

5,2106,0503,4702,5307,580

0 7Qft

2,980

i oj.n

1,6601,5101,4401 9Qft

1,030958099

1,3905,370

4,310

2,800

2,530

NOTE. Discharge Dec. 16-21 and Dec. 28 to Mar. 24 determined from gage heights corrected for back water from ice by means of two discharge measurements, observer's notes, and weather records. Gage- height record lacking Oct. 10-15; discharge ascertained by comparison with record of flow of Susquehanna River at Conklin.

Monthly discharge of Chenango River near Chenango Forks, N. Y.,for the year endingSeptember SO, 1926


Month

July . -


Maximum

9,940 12,800 10,800 7,500 4,400

17,000 19,700 4,420 1,7301,1 eo2,190 7,580

19,700

Minimum

638 1,820 1,000 1,000

950 1,100 3,880

695 564 308 519 564

308

Mean

1,910 4,760 3,560 1,940 2,020 4,500 8,720 1,670

897 530 959

2,610

2,830

Per square mile

1.28 3.19 2.39 1.30 1.36 3.02 5.85 1.12 .602 .356 .644

1.75

1.90

Run-off in inches

1.48 3.56 2.76 1.50 1.42 3.48 6.53 1.29 .67 .41 .74

1.95

25.79

SUSQITEHANNA EIVER BASIN 233TIOGA RIVER NEAR ERWINS, N Y

LOCATION. At steel highway bridge a quarter of a mile below mouth of Canisteo River near Erwins, Steuben County, and 3 miles above confluence of Tioga and Cohocton Rivers, which form Chemung River at Painted Post.

DRAINAGE AREA. 1,320 square miles (furnished by Robert 0. Hayt).RECORDS AVAILABLE. July 12, 1918, to September 30, 1926.GAGE. Chain on downstream side of bridge near left abutment; read by Miss

Jane Sexton.DISCHARGE MEASUREMENTS. Made from downstream side of bridge or by

wading.CHANNEL AND CONTROL. Bed and control composed of well-compacted gravel;

fairly permanent.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9.6 feet at

7 a. m. April 9 (discharge, 15,800 second-feet); minimum stage, 0.82 foot at 7.40 a. m. August 6 and noon August 8 (discharge, 64 second-feet).

1918-1926: Maximum stage recorded, 16.4 feet at 4 p. m. May 22, 1919 (discharge, about 46,700 second-feet); minimum stage, 0.62 foot at 5.40 p. m. August 22, 1923 (discharge, 31 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Storage not sufficient to affect the seasonal flow.ACCURACY. Stage-discharge relation permanent except as affected by ice.

Rating curve well defined between 75 and 15,000 second-feet. Gage read to quarter-tenths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctua tion in stage, by drawing gage-height graph on basis of the two gage readings and averaging discharge for intervals of the day, except for periods of ice effect for which it was ascertained as indicated in footnote to table of daily discharge. Open-water records good, except those for low-water season when daily discharge determined from mean of two gage readings daily may be considerably in error owing to fluctuations in stage caused by power operations upstream. Records for periods of ice effect and those estimated, fair.

Discharge measurements of Tioga River hear Erwins, -N. Y., during the year endingSeptember 30, 1926

Date

Oct. 14..........Jan. 28...... .

Gage height

Feet

2.02

Dis charge

Sec.-ft.

570

Date

Apr. 14... ......

Gage height

Feet 3.843.83

Dis charge

Sec.-ft. ' 2,4902, 450

Date

Aug. 9... ...... -

Gage height

Feet 1.311.03

Dis charge

Sec.-ft. 189107

Daily discharge, in second-feet, of Tioga River near Erwins, N. Y., for the year endingSeptember SO, 1926

Day

l... ............2.-......-...-..3...............4....... ........5

6.7 . ...........8 9... 10 -.. -

Oct.

122120158131186

222

239230239

Nov.

805805

680565

565

1,7101,9.501.130

Dec.

680640

1,8103,140

6,7004 1602 3301,9501.440

Jan.

220240260280300

9001.000

440380340

Feb.

1,4001,7001,4001,000

850

750650550550500

Mar.

2,7405,0803,1801,9501, 480

1.3301,2301.2301,1301,030

Apr.

2,8801,9502,0702,6002,600

2,4603,1608,510

11,5006,020

May

1,180985895940762

680640565496464

June

194265322230198

172162183186194

July

186158143125128

131120172137131

Aug.

8980

115125

677464

11098

Sept.

214198222265ISO

23g40d37*yf>

87?,


Daily discharge, in second-feet, ofTioga River near Erwins, N. Y., for the year ending September 80, 1926 Continued

Day

11 12.. .............13... .- .14.. .............15... .........16 17 18 19.. _ 20 ............21...............2223... 24... .25-.. 26.. ............ .27 28 29 30 .31

Oct.

375322298270226210248265

322274

298322

1,2003, 3701,9501,7101,280

985895

Nov.

895805

5,1903,1205,3003,2602,0701,9501,9501,6001,3301,080

940805720720

1,490940640

Dec.

1,1301,1801,030

940640550500420433496530

550

400340300280260240220

Jan.

340320320300300300320354

4, 150'3, 400

1,180900750

700650fiftn

550550

Feb.

440400

340380400^40340340380800

650400380

6,0005,4303,180

Mar.

805700600550550550500600846

7, 9507,8508,290

11,5009,720

12,50010,4005. 430

2,4602,3302.740

Apr.

4,8603,3302.7402,4602,4602,2001,8301,4901,280

9851,0301,0801,4401.4803,7603,2201,6001,3801,2801,080

May

433433375375322298248274248256298252239230222210194176m183162

June

155140149198

1,0801,030

680496404375274239239222248404565375270222

July

11296

11014921414311596

137131115105105no105987878878974

Aug.

878796

172404274256367

1,480640404805640

1,2701,9501,130

762602404322270

Sept.

638375298248214190183198222169143128125169

1,8701, 730

940680

1,180850

NOTE. Discharge Dec. 16-18, Dee. 23 to Jan. 17, Jan. 24 to Feb. 26, and Mar. 12-18 determined from gage heights corrected for backwater from ice by means of one discharge measurement, observer's notes, and weather records or, for periods of missing record, by comparison with flow at stations on Chemung River at Chemung and Cohocton River near Campbell. Gage-height record lacking or doubtful Nov. 8, Jan. 9, 11, 12, 14-16, 24, Feb. 4, 5. 7-9, 11, 12, 14-20, 25-27, Mar. 13, 14, July 11, 25, and Sept. 12; discharge ascertained by comparison with now at stations noted above.

Monthly discharge of Tioga River near Erwins, N. Y., for the year endingSeptember 30, 1926


Month

October _ .

April............. .............................

June... __ . ____ . .. .July...- .. .......... ...................


Maximum

3,370 8,340 6,700 7,460 6,000

12,500 11,500 1,180 1,080

214 1,950 1,870

12,500

Minimum

120 565 220 220 340 500 985 162 140 74 64

125

64

Mean

562 1,760 1,130

989 1,090 3, 550 2,820

426 329 122 430 460

1,140

Per square

mile

0.426 1.33 .856 .749 .826

2.69 2.14 .323 .249 .092 .326 .348

.864

Run-off in inches

0.49 1.48 .99 .86 .86

3.10 2.39 .37 .28 .11 .38 .39

11.70

CHEMUWG BIVEB AT CHEMUWG, N. Y.

LOCATION. At steel highway bridge midway between Chemung, Chemung County, N. Y., and Willawana, Pa., half a mile upstream from State line and 10 miles above mouth.

DRAINAGE AREA. 2,440 square miles.RECORDS AVAILABLE. September 7, 1903, to September 30, 1926.GAGE. Tape gage at upstream side of right span of bridge; read by R. C. Farrow.DISCHAEGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Sand and gravel; occasionally shifting.EXTREMES OF DISCHARGE. Maximum stage recorded during year, 12.1 feet at

8 a. m. March 26 (discharge, 29,500 second-feet); mmimum stage, 1.70 feet at 8 a. m. August 9 (discharge, corrected for backwater from aquatic growth, about 140 second-feet).

STJSQTJEHANNA RIVER BASIN 235

1903-1926: Maximum stage recorded, 17.96 feet at 7 a. m. March 15, 1918 (discharge, about 67,000 second-feet); minimum discharge, 49 second- feet August 14, 1911 (gage height, 1.47-feet).

ICE. Stage-discharge relation affected by ice.ACCTTBA.CY. Stage-discharge relation affected by backwater from ice or from

aquatic growth throughout the greater part of the year. Standard rating curve fairly well defined. Gage read to hundredths twice daily. Daily discharge for periods of no backwater ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two gage readings and aver aging discharge for intervals of the day. For periods of backwater daily discharge ascertained as indicated in footnote to table of daily discharge. Records good for periods of no backwater; fair for remainder of year.

Discharge measurements of Chemung River at Chemung, N. Y., during the year ending September 30, 1926

Date

Oct. 15.........

Mar. 28.--

Gage height

Feet 2.43

M.066.75

Dis charge

Sec.-ft. 535

1,0608,480

Date

Apr. 15 JunelS ____

Gage height

Feet 5.42

&2.60

Dis charge

Sec.-ft. 4,890

413

Date

Aug. 17 . __ .

Gage height

Feet 1.73

<>2.40

Dis charge

Sec.-ft. 172496

0 Stage-discharge relation affected by ice.* Stage-discharge relation affected by aquatic growth.

Daily discharge, in second-feet, of Chemung River at Chemung, N. Y., for the year ending September 30, 1926

Day

1 .... . .2... ............3 _ ... . ..4 _ . ...........5.. -. _ .

6 7.. .............8 9 10. .- __ .11 _ ...... . _ ..12 _ . __ .......13 _ .....-.-.-..14 15 16. . ....17. -...18 __ ... ...19. . ...20.. . ..21....... .....22.... _ . _ ....23 24 . __ ..25 26. 27.. ........28 ...29.... _ ........30...... ......31.. _ ... _ ....

Oct.

322322350350380442545545475475652690615

545510545770905770690615615615

1,8708,8204,2503,2802,6002,1401 860'

Nov.

1,7301,6001,4801,4201,2001,1501,0501,3003,2802,290

1,7301,4809,03011,0006,0007,0106,490

3,4603,4603,1002,4402,0002,0001,7301,4801,4202,0002,1401,300

Dee.

1,3601,3001,2503,1005,300

12, 1007,5805,0803,8403,1002,2902,1402,1401 8601,3601,3001,1001 000'905

9501,1501,1501,100900800700600550550550500

Jan.

500500500550600900

1,6001,500900650600650600550550600700750

8,88010,4006,4905,7602,4402,0001,6001,3001,2001,0001,0001,0001,100

Feb.

2,0003,4002,6001,8001,6001,5001,4001,2001,000850800750700650700750650600650700

1,2001,200800750700

7,50011,0005,760

Mar.

4,4407,5606,4904,2403,2002,4402,1402,1402,0001,6001,5001,3001,2001,1001,0001,000950

1,1001,2008,14015,30017,20023,00023,40022,10024,80012,8007,8505,3005,080

Apr.

5,5304,4403,8404,6504,8604,8604,81013,00024,30014,20010,0007,2805,7604,8605,0804,8604,0403,2802,7602,4402,1402,1402,6002,6005,0804,8303,4602,7602,4402,140

May

2,1402,0001,8601,8601,7301,4801,3001,2501,1501,050950950905815770750700700650650700650600550550550480460440,420460

June

500650650600500440420440440440420400400460800

1,9001,200950750650550500440420440650850700600480

July

420380340320300280280300300260220200220220240300260220220240240220220190190200190170170170170

Aug.

160190180160150150170150150180170170180700750600500600

2,0001,5001,0001,4001,4001,9003,2002,4001,5001,200900700600

Sept.

500460420380420440480650550950950900700600550500460440420400360320300340

1,6003,0002,2901,480.1,8601,600

NOTE. Discharge Dec. 16-18, Dec. 23 to Jan. 18, Jan. 24 to Feb. 26, Mar. 5, and 11-16, determined from gage heights, corrected for backwater from ice by means of one discharge measurement, observer's notes, weather records, and comparison with records of flow at stations in same drainage basin. Discharge May 16 to Sept. 24 determined from gage heights corrected for backwater from aquatic growth by means of three discharge measurements and comparison with records of flow at stations in same drainage basin.

63435 30 16


Monthly discharge of Chemung River at Chemung, N. Y., for the year endingSeptember SO, 1926


Month

February... ____________________

July-.-..-....-..-.-.......--...-.-.-.........

September ____________________

The year.. . _______________


Maximum

8,820 11,000 12, 100 10,400 11,000 24,800 24,300 2,140 1,900

420 3,200 3,000

24, 800

Minimum

322 1,050

500 500 600 950

2,140 420 400 170 150 300

150

Mean

1,230 3,010 2,180 1,850 1,900 7,000 5,500

952 621 247 807 811

2,170

Persquare mile

0.504 1.23 .893 .758 .779

2.87 2.25 .390 .255 .101 .331 .332

.889

Run-off in inches

0.58 1.37 1.03 .87 .81

3.31 2.51 .45 .28 .12 .38 .37

12.08

CAWACADEA CREEK AT HORWEIL, W. Y.

LOCATION. At Senaca Street Bridge in Hornell, Steuben County, a quarter of a mile above confluence with Canisteo River.

DRAINAGE AREA. 58.5 square miles (measured on topographic maps).RECORDS AVAILABLE. October 18, 1924, to September 30, 1926.GAGE. Vertical staff on downstream side of left bridge abutment; read by an

employee of the city engineer of Hornell prior to April 7, 1926; thereafter by engineers of New York State Department of Public Works.

DISCHARGE MEASUREMENTS. Made from upstream side of bridge or by wading.CHANNEL AND CONTROL. Control for low stages is a gravel bar 150 feet below

gage; for medium and high stages channel-control conditions exist. Bed composed of gravel and is subject to shift.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 4.9 feet at 8.30 a. m. September 24 (discharge, from extension of rating curve, 1,100 second-feet); minimum stage, 1.06 feet at 6.30 p. m. July 25 and 5.30 p. m. July 27 (discharge, 3.5 second-feet).

1924-1926: Maximum stage recorded, that of September 24, 1926; mini mum stage recorded, 0.98 foot at 8 a. m. November 4, 1924 (discharge, about 2.7 second-feet).

The flood of February 11, 1925, greatly exceeded that of September 24, 1926, but no determination of discharge can be made on account of lack of gage-height record.

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent during period of record except

as affected by ice. Rating curve well defined between 5 and 300 second-feet; extended beyond these limits. Gage read to hundredths twice daily during most of January and subsequent to April 7; no readings made during re mainder of year. Daily discharge ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two gage readings and averaging discharge for intervals of the day, except for periods of ice effect or of no record for which it was ascertained as indicated in footnote to table of daily discharge. Records good except those for periods of ice effect or of no record which are fair.


Discharge measurements of Canacadea Creek at Hornell, N. Y., during the year ending September 30, 1926

Date

Oct. 14. ......

Feb. 21.. .......

Gage height

Feet 1.32

"1.58

Dis charge

Sec.-ft. 19.5

997

Date

Mar. 29.... ..Apr. 13.........

Gage height

Feet 1.841.87

Dis charge

Sec.-ft. 90.390.823.7

Date

Aug. 11... ......

Gage height

Feet 1.121.76

Dis charge

Sec.-ft. 5.53

72.1


Daily discharge, in second-feet, of Canacadea Creek at Hornell, N. Y., for the year ending September 30, 1926

Day

I........ ..2--_.-_ ......... ....3... .. .4. ...... __5. ........... ..

6........ ..7............. .8_................. .9. .................... ...

10. ...................... ... .... . ....

11-----.-........... .. ...12..- ........... ... .......13. . ....14........ . .15............... .

16...................................... .. .17.......... ..18--.. ___ ...19.-.-........*....... .....20-.--. ................ ... . . .

21--...-- .... . .22.-...... .. .... . .23-... .._ _ ____ ... . .24..-... ......... ....... ..... . . .25--.... ._

26.- ....... ...................... ..27....... .... .... .28.. .. . .... .29........ ....... .................... . . .SO.- . ... ..31.. ............ .......... ...... ......

Jan.

1011

18

486550OO

24

1916171517

99on

71

119

14fi

49363230

28£62424

34

Apr.

110

239625310201

1518688

111140

9078544439

39789276

166

9764604471

May

5642444434

2726211918

1816141412

1211109.6

11

109.69.6

109.6

9.68.98.98.98.3

12

June

1318119.69.6

8.98.98.98.38.3

7.37.87.39.6

23

1612129.68.3

7.87.87.37.37.3

8.38.37.87.36.8

July

6.47.36.87.37.3

7.36.45.54.84.8

4.86.06.86.85.5

5.24.45.56.05.5

4.84.14.14.14.1

4.13.87.86.44.84.8

Aug.

4.46.85.24.14.1

4.1125.55.54.8

4.88.98.3

15IS

1132

1738232

8158275329

1914117.86.86.4

Sept.

5.36.04.86.87.3

7.88.36.8

187119

342114129.6

8.39.68.98.37.8

7.87.38.3

449222

15185

1076441

NOTE. Discharge Jan. 1-8,11-17, and 23, determined from gage heights corrected for ice effect by means of one discharge measurement, observer's notes, weather records, and comparison with record of flow of Tioga River near Erwins. No gage-height record Jan. 9, 10, 24-31, Apr. 1-6; discharge estimated by com parison with record of flow of Tioga Eiver.

Monthly discharge of Canacadea Creek at Hornell, N. Y., for the year endingSeptember 30, 1926


Month

July ...... .............. .- --

September _ . ___ ... ..

* Discharge in second-feet

Maximum

235 625

56 23 7.8

173 449

Minimum

10 398.3 6.8 3.S 4.1 4.8

'Mean

41.7 133 18.2 9.78 5.59

24.8 54.6

Persquare mile

0.713 2.10

.311

.167

.096 x415 .933

Run-off in inches

0.82 2.34 .36 .19 .11 .48

1.04


COHOCTOH RIVER NEAR CAMPBEII, N. T.

LOCATION. At steel highway bridge 2 miles upstream from Campbell, Steuben County, and 11 miles above Painted Post, where Cohocton and Tioga Rivers unite to form Chemung River.

DRAINAGE AREA. 480 square miles (furnished by Robert O. Hayt).RECORDS AVAILABLE. July 11, 1918, to September 30, 1926.GAGE. Chain gage on downstream side of bridge near left abutment; read by

Miss Dora Wood.DISCHARGE MEASUREMENTS. Made from downstream side of bridge or by

wading.CHANNEL AND CONTROL. Bed and control composed of well-compacted gravel;

fairly permanent. Heavy aquatic growth in channel during summer.EXTREMES OF DISCHARGE. Maximum discharge, 5,350 second-feet at 5.10 p. m.

March 25 (gage height, 5^7 feet); minimum discharge recorded, about 32 second-feet August 2, 3, 11, and 12 (discharge corrected for backwater from weeds).

1918-1926: Maximum discharge, 11,300 second-feet at noon March 12, 1920; minimum stage recorded, 0.68 foot at 5 p. m. October 7, 1921 (dis charge corrected for backwater from weeds, about 13 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Seasonal distribution of flow is probably not affected by small

reservoirs above.ACCURACY. Stage-discharge relation affected by backwater from ice or from

aquatic growth throughout most of year. Standard rating curve fairly well defined between 200 and 4,000 second-feet. Gage read to quarter-tenths twice daily. Daily discharge for periods during which there was no back water ascertained by applying mean daily gage height to rating table or, for days of considerable fluctuation in stage, by drawing a gage-height graph on basis of the two gage readings and averaging discharge* for intervals of the day. For periods of backwater from ice or from aquatic growth daily

- discharge ascertained as indicated in footnote to table of daily discharge. Records good for periods during which stage-discharge relation was not affected by backwater from ice or aquatic growth; fair for periods of back water.

Discharge measurements of Cohocton River near Campbell, N. Y., during the year ending September 30, 1926

Date

Oct. 14. ........Jan. 29.. ___ .

Gage height

Feet «1.20M.32

Dis charge

Sec.-ft. 124

Date , Gage height

Feet 2.52

' 2.67

Dis charge

Sec.-ft. 1,1001,260

Date Gage height

Feet «0.91

«.87

Dis charge

Sec.-ft. 11442.6

Stage-discharge relation affected by aquatic growth. 6 Stage-discharge relation affected by ice.


Daily discharge, in second-feet, of Cohocton River near Campbell, N. Y., for the year ending September 30, 1926

Day

3- -4.. --------5

6_ _- -._7. --------8 -------9- ...........10 ............

11 ..- -

13 14.. . 15.

16. ---------1718 19 20... ----------

21 ... 22-- ........23 24..... .... i 25.------..---.

26. 2728. . 29..-.--- ..30. ..........31..... ..........

Oct.

65657080100

959585100130

160140130120120

110160160150

140

130150300

85070065060050044ft

Nov.

440400400380340

320320380360320

300300

1,2201,120998

1,5901,120955875795

682610542480450

422

395

350

Dec.

350350395510875

1,5901,120875795682

610575510420360

300280260260260

260240240240200

190170160

140140

Jan.

140140150160200

340320240190160

140120120120120

140140200

2,6001,100

850700500360280

220200190190190200

Feb.

280550440360280

260260260260240

220190170160160

160150150160170

180190160160340

1,1001,5001,200

Mar.

9001,4001,200900600

500480440380360

320280200200200

180170160280

2,600

2,4003,0004,5203,6004,370

3,7502,2502,2201,4001,2201,120

Apr.

1,040875875

1,3201,180

9551,2103,3904,1702,890

2,2501,7901,4001,4001,300

1,2201,0801,120955758

645.542542610915

720682645720720

May

682650600650550

4^0355326317294

276258238217238

217205205229229

190194194179172

158148141135126217

June

190190180160140

130120110120140

140140130130160

150150140130110

100100100100100

1201301008595

July

9080756565

6560656070

8065657575

7065657065

5550464444

606560506060

Aug.

3634324050

484242

. 4236

3232604680

805044240200

190280150200190

160130100907570

Sept.

6560555560

70756570360

20014013011085

7070706065

6055110550

1,200

950600600440420

NOTE. Discharge Dec. 14 to Mar. 22 deter mined from gage heights corrected for backwater from ice by means of one discharge measurement, observer's notes, weather records, and by comparison with records of flow at other stations in the same drainage basin. Discharge Oct. 1 to Nov. 12 and June 1 to Sept. 30 determined from gage heights corrected for backwater from aquatic growth by means of three discharge measurements and by comparison with records of flow at adjacent stations. Gage-height record lacking or doubtful Mar. 22, May 2-5, and June 12; discharge ascertained by comparison with records of flow at adjacent stations.

Monthly discharge of Cohocton River near Campbell, N. Y., for the year endingSeptember 80, 1926


Month

July. .........................................


Maximum

850 1,590 1,590 2,600 1,500 4,520 4,170

632 190 90

280 1,200

4,520

Minimum

65 300 140 120 150 160 542 126 85 44 32 55

32

Mean

221 588 436 346 347

1,340 1,260

292 130 64.0 93.6

231

446

Persquare mile

0.460 1.22 .908 .721 .723

2.79 2.62 .608 .271 .133 .195 .481

.929

Run-off in inches

0.53 1.36 1.05 .83 .75

3.22 2.92 .70 .30 .15 .22 .54

12.57


JUWIATA RIVEB AT NEWPORT, PA.

LOCATION. At 4-span steel highway bridge at Newport, Perry County.DRAINAGE AREA. 3,380 square miles.RECORDS AVAILABLE. March 21, 1899, to July 14, 1906; January 7, 1907, to

September 30, 1926. Records for January 1, 1914; to September 30, 1918, and October 1, 1921, to September 30, 1923, are contained in annual reports of the Water Supply Commission of Pennsylvania.

GAGE. Chain gage attached to downstream side of bridge; read by A. R. Bortel. Elevation of gage zero above mean sea level, 363.32 feet (U. S. Geoolgical Survey datum).

DISCHARGE MEASUREMENTS. Made from downstream side of bridge or by wading at same section.

CHANNEL AND CONTROL. Banks high and not subject to overflow. Bed com posed of hard material. Low-water control is a riffle 400 feet below gage.

EXTREMES OF DISCHARGE. Maximum stage recorded during year,- 13.20 feet at 5 p. m. February 26 (discharge, 37,100 second-feet); minimum effective stage, 2.87 feet July 28 (discharge, 434 second-feet, stage-discharge relation affected by grass in the channel).

ICE. Stage-discharge relation usually affected by ice in winter.ACCURACY. Stage-discharge relation permanent, except when affected by ice

or grass in channel. Rating curve fairly well defined. Gfage read twice daily to half-tenths until March 31 and to hundredths after that date. Daily discharge ascertained by applying to rating table mean daily gage height, when necessary, corrected for ice or grass effect. Records fair.

COOPERATION. Records furnished by the Pennsylvania State Department of Forests and Waters, under the supervision of the United States Geological Survey.

Discharge measurements of Juniata River at Newport, Pa., during the year endingSeptember 80, 1926

Date

Dec. 16...... ...Apr. 23.........

Gage height

Feet 3.863.90

Dis charge

Sec.-ft. 2,2102,470

Date Gage height

Feet ° 3. 24"3.20

Dis charge

Sec.-ft. 930675

Date

Sept. 1. ........

Gage height

Feet ° 3. 90"4.48

Dis charge

Sec.-ft. 1,6203,390

a Stage-discharge relation affected by growth of grass in river channel below gage.

Daily discharge, in second-feet, of Juniata River at Newport, Pa., for the year endingSeptember 80, 1926

Day

1 . 2-.... _ .......3 ........... .4. .........5... .......... ..

6. ........... ...7...............8.... ...........9...............

10-. ..........

11...... .........12..... . ......13...............14 15.. ..........

Oct.

496470470535574

756670900836

1,470

726684470656

Nov.

1.4701,080

820698QAA

9361,1201,900

2,020

5,86012, 80011.800

Dec.

3,7201,7901,9001,9001 QAA

4,3207,1205.8604,9304,320

3 CQA

3,0202,6202,7501.900

Jan.

1.3001,3001 CAA

1,6001,700i QAA

2 OAA

2 4002*4002,200

2 AAA

1 QAA

1,7001,6001.500

Feb.

4,930

6,8006,1704,320

4,930o 790

4,0203,8703,430

3 1 *ft

9 7*;ft2,3702,3704.020

Mar.

13,900

7 440

6,170

7,1206,170

4,9304,3203,-8703.4303. 150

Apr.

6,170

6,1705,860

5 EC/)

4,9305,2406,1708,400

7,760

5,8605.240

May

9 9^02,1309 l^fi

1,680

2,0201,790

1,4301,470

1 040

1,2301,4301.180

June

9001,1901,4301,580i oon

1,2701,270

1,2101,100

1,100900900750

1.400

July

7«fl

7507*^1750

800

1,6001.000

Qcn

850850950

Aug.

850800750440

800750600750

orn

440800750

1.300

Sept.

1,4001,2001,3002,2002,200

14 000

8,5006,000

4,6003,6003,0002,2001.800

PATUXENT RIVER BASIN 241

Daily discharge, in second-feet, of Juniata River at Newport, Pa., for the year ending September 30, 1926 Continued

Day

16.. .............17 18 19...............20 ... ...... .

21 22 ..........23. ...........24 ........25-

26 ..........27 28... ............29...............30............... 31............ ..

Oct.

726788868

772

712868836740852

1,3902 7CA

2,0201,680 1,470

Nov.

6,8004,9304,0203,4303,150

2,880

1,6801,270

1,5801,6801,4702,0201,900

Dec.

2,1302,020

1,9001,700

1,680

2,1302,1309 17ft

2,0201,700

1,4001, 300

Jan.

1,5001,7002,200

10,40017,200

14,300

16, 10011,8008,080

6,170

4,9303,5802,370

Feb.

4,3205,8605,2407,120

10,000

11,0009,690

18,70023,80019, 900

32,700

Mar.

3,1502,6202,6202,7503,150

4,0204,6205,5507,440

8,080

8,0807.1206,170 5,860

Apr.

4,6204,0204,0203,7203,150

2,6202,3702.5002,3702.620

2,500

2,3702,3702,130

May

1,2301,100

9541,2301,140

1,0801,1601,2701,0801,080

1,2301,1601,120

868884 936

June

2,8002,6001,7001,4001,400

1,2001,000

9001,000

950

1,0001,4001,1001,200

800

July

900800800700750

700650600550650

750650440650750

1, 100

Aug.

1,1001,2001,5001,5001,500

1,3001,4002,0004,4003,400

2,8002,4001,6001,2001,000

950

Sept.

1,2CO1,4001,3001,1001,000

750800

1,0001,5003,200

3,2003,4003,0002,6CO2,200

NOTE. Sta?e-discharge relation affactsi by ica Dsc. 19,, 20, 27, 23T31, and Jan. 1-18; discharge estimated from study of weather ree&rdS, gfige-neight gr'ap'h and comparison with similar studies for Frankstown Branch of Juniata River at Williamsburg, Raystown Branch of Juniata Rivar at Saxton and Susquehanna River at Harrisburg. Discharge June 10 to Sept. 30, when stage-discharge relation was affected by grass in channel, computed by shifting-control method based on periodic discharge measurements.

Monthly discharge of Juniata River at Newport, Pa., for the year ending September 80,1926


Month

April..........................................

June. ___ __ . . ... . .July _ _ August- -_ _ _ _ __September _ _ __ .. .. .. .. . ... ..

The year... .............................


Maximum

2,750 12,800 7,120

17,200 32, 700 13,900 8,720 2,250 2,800 1,900 4,400

14, 000

32, 700

Minimum

470 698

1,300 1,300 2,370 2,620 2,130

868 750 440 440 750

440

Mean

971 2,880 2,600 4,850 9,350 6,350 4,630 1,360 1,260

843 1,310 3,280

3,260

Per square mile

0.287 .852 .769

1.43 2.77 1.88 1.37 .402 .373 .249 .388 .970

.964

Run-off in inches

0.33 .95 .89

1.65 2.88 2.17 1.53 .46 .42 .29 .45

1.08

13.10

PATUXENT RIVER BASIN

PATUXENT RIVER NEAR BURTONSVIIIE, MD.

LOCATION. At Columbia Turnpike Bridge, \% miles northeast of Burtonsville,Montgomery County, and 4 miles northwest of Laurel.

DRAINAGE AREA. 127 square miles. RECORDS AVAILABLE. July 21, 1911, to June 15, 1912 (records furnished by

United States Engineer Office); July 21, 1913, to September 30, 1926. GAGE. Au water-stage recorder on left bank 80 feet below highway bridge;

installed August 8, 1922; inspected by Arthur Beall. DISCHARGE MEASUREMENTS. Made from bridge or by wading. CHANNEL AND CONTROL. Banks lined with trees and brush; overflowed at stage

of about 10 feet. Control poorly defined; shifted during year.


EXTREMES OP DISCHARGE. Maximum stage during year, from water-stage recorder, 15.27 feet at lip. m. September 5 (discharge, about 4,500 second- feet); minimum stage, 1.93 feet from 7 a. m. to 5 p. m. August 14 (discharge, 25 second-feet).

1911-1926: Maximum stage recorded, that of September 5, 1926; mini mum stage, 0.18 foot August 25, 1911 (discharge, 6 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Fluctuation at low stages has been noticed and is probably

caused by operation of a power plant above gage.ACCURACY. Stage-discharge relation not permanent; affected by ice. Rating

curves fairly well defined. Operation of water-stage recorder satisfactory except as indicated in footnote to table of daily discharge. Daily discharge ascertained by applyulg mean daily gage height determined from recorder graph to rating table, or for days of considerable fluctuation in stage by averaging discharge for fractional parts of a day, or as explained in footnote to daily discharge table. Records good except during winter, when stage is affected by ice, and for estimated periods for which they are fair.

Discharge measurements of Patuxent River near Burtonsville, Md., during the year ending September 30, 1926 .

Date

Nov. 21........Jan. 15. .......Mar. 9 . .......Apr. 27.........

Gage height

Feet2.64:

2. 762.842.39

Dis charge

Sec.-ft. 97.263.2

77.4

Date

Do., ......

Gage height

Feet 2.302.182.262.26

Dis charge

Sec.-ft. 65.244.057 4

58.5

Date

Sept. 10 .......Sept. 14 ......Sept. 28-.

Do. ........

Gage height

Feet 3.282.482.742.75

Dis charge

Sec.-ft. 20164.8

124125


Daily discharge, in second-feet, of Patuxent River near Burtonsville, Md., for the year ending September 30, 1926

Day

1 ...... ..... .2... ....... ..3 ............4 .........5- ... ... .....

6-.. .........7... ............8 . -...9 __ . _ .......10

11 12.. .............13 14 15

16 17 18 19. 20

21. 22 23 24...............25

26 27 28. . ........ ..29 30. 31. ...........

Oct.

323467K7

141

CK

44424658

46454819125

7990846556

55546276

446

24811692797881

Nov.

QQ

94106

78

797911014196

8888

170

10094908684

8185857671

Dec.

75

151

122

16411410197Oft

8688847876

7978737575

8081807373

65

Jan.

104108114

125

10809

65

900464177

1fi9296156

75

500

Feb.

KU.222

140116

122140116

| 901

113137971

417281414

1,140423

240

240

Mar.

17516913210080

180205146137

135134124108116

114110105111116

118106110106102

129142113104104124

Apr.

11310610496

99132143244148

130127118111106

102999493Q9

9086868987

8278808782

May

80

767676

79767272

666565

71

178127869682

7573767679

767369666260

June

6579565262

6262715650

4850555152

5048464240

38. 38

414658

5048483835

July

34343196

701

20290584843

7241363744

5645403835

3532313449

403331323438

Aug.

4140343137

25079493731

292828

206

168202168171130

12713896153209

1388768

1 .8

Sept.

|.600

1,300150

229437

9878706360

58is535350

504647

1,400513

340122117185131

NOTE. Because of missing gage-height records or ice effect discharge estimated Nov. 13-20, Dec. 26-31» Jan. 9-17, 23-29, Feb. 5-6, 10-12, 22-28, Mar. 1, 3-6, and Aug. 29 to Sept. 8 from records of flow at other stations and study of weather records. Braced figures show mean discharge for periods indicated.

POTOMAC RIVER BASIN 243

Monthly discharge of Patuxent River near Burtonsville, Md., for the year endingSeptember SO, 1926


Month

OctoberNovember _ _____ ___ ___

JanuaryFebruary _ _-__ ___

AprilMay. . . -..- .-_ -_ _ ._

JulyAugust -.__ .-. -. .... ._ _ -.

The year.. _____ . __ _ ______


Maximum

446

164 900

1,140 205 244 178

79 701 250

'1,400

1,400

Minimum

3275

78 60 35 31 28 46

28

Mean

85.6 112 87.3

153 255 124 10$ 79.1 51.2 70.0

100 222

119

Persquare mile

0.674.882 .687

1.20 2.01 .976 .850 .623 .403 . 551 .787

1.75

.937

Run-off in inches

0.78 .98 .79

1.38 2.09 1.13 .95 .72 .45 .64 .91

1.95

12.77

POTOMAC RIVER BASIN

NOETH BRANCH OF POTOMAC RIVER AT BIOOMINGTON, MD.

LOCATION. At highway bridge at Bloomington, Garrett County, 2 miles above Piedmont, W. Va. Savage River enters 600 feet below bridge.

DRAINAGE AREA. 287 square miles (measured on topographic maps).RECORDS AVAILABLE. October 30, 1924, to September 30, 1926.GAGE. Chain gage near left end of bridge on upstream guard rail; read by

W. P. Wagner.DISCHARGE MEASUREMENTS. Made from highway bridge or,by wading.CHANNEL AND CONTROL. Channel curved above and straight for 200 feet below

gage. One channel at gage at all stages, two channels above gage at low water. Right bank rather low, covered with brush, and subject to over flow at stage of about 14 feet; left bank high, not subject to overflow. Bed of boulders and bedrock. Control is composed of large, flat, angular rocks broken from rock ledge a short distance above; probably permanent.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 8.85 feet at 7.30 a. m. August 19 (discharge, 5,250 second-feet); minimum stage, 2.29 feet at 3 p. m. August 12 (discharge, 33 second-feet).

1924-1926: Maximum stage recorded, that of August 19, 1926; mini mum stage, 2.26 feet November 9-10, 1924 (discharge, 30 second-feet).

Flood of March 29, 1924, reached a stage of 20.3 feet (discharge not deter mined), determined from debris and floodmarks by local residents.

ICE. Stage-discharge relation affected by ice during severe winters.REGULATION. Low-water flow affected by a storage reservoir on Stony River

27 miles upstream, having a capacity of 204 billion cubic feet and drainage area of 114 square miles.

DIVERSIONS. None.ACCURACY. Stage-discharge relation permanent; affected by ice December

25-31 and January 1, 10-15. Rating curve well defined. Gage read to hundredths twice daily except as noted in footnote to daily-discharge table. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.


Discharge measurements of North Branch of Potomac River at Bloomington, Md., during the year ending September 30, 1926

Date

Dec. 18..--. _ .Jan. 14.........

Gage height

Feet 3.023.26

Dis charge

Sec.-ft. 160227

Date

Mar. 30-...-..-Mar. 31...-.

Gage height

Feet 5.405.90

Dis charge

Sec.-ft. 1,2801,810

Date Gage height

Feet 2.80

Dis charge

Sec.-ft. 101

Daily discharge, in second-feet, of North Branch of Potomac River at Bloomington, Md., for the year ending September 30, 1926

Day

1 ...... .2... ........... _3 ............4...... ... ..5..............6 .7...... .. .8... .... ........9...... .... ....10 11. - __ _12 13 ..14... .. ..15 ________16 . _______17-. . _.18- 19 ______ .20 _______21 _ _ _22 _____ _23 24 25 .

26 27 _____28 . .29 . 30 .-_ .31.. _...___.

Oct.

474694

1781,050

3322061199180857468

100

3693,6401,190

644432332282252298

1,9401,670

806545453369332

Nov.

332, 315

410369332390432864

1,050

4984QQ

4- f-fifl2,6702,2401,5901,050

806750696

498476390350332

594410332

Dec.

332332

594806fi1Q

498A CQ

390315410390332oco

OQQ

2521QO

192200

252267192

151

Jan.

170991

22122101 Q

1,050545332267

207

206221332

3,0201,6701,3403,7701,760

afi4

594KAK

476298ofin

498

Feb.

1,050696545453453

476410

369315282350644

i wnQRA

594

1,6701 *yv.

2,550

2,0401,9403,6401,7601,120

Mar.

986

864750

6961,760

924750750OAA

570390369390350369545

1,0501,5901,1901,4201,6701,5001,340

986864806

1,3401,760

Apr.

2,0401,3401,1201,190

864806

3,0201,8501,7601,1901,050

986806696

545522432369315298282267298282282252252298236

May

221206206192178159156148141136136124112107107116221164136236170192148138128124107119

988780

June

82989894

1342521781461481029278

221192131206192124107917778

2823321921461311028270

July

60555152

112864390252178131114154116

941369880745751443937

167175966857576272

Aug.

588561615552455346433734353945

3'90

2522,7804,7004,4304,0302,5501,5001,4201,420

1,340806«19432453390

Sept.

298298545619

1,050594644432350350332252221206192173154138126121156156128267315

1,340545410522432

NOTE. Because of missing gage readings or effect of ice discharge interpolated or estimated from observ er's notes and study of weather records Dec. 20, 21, 25-31, Jan. 1 and 10-15. Braced figures show mean discharge for periods indicated.

Monthly discharge of North Branch of Potomac River at Bloomington, Md., for the year ending September 30, 1926


Month

October.. ____________________

April _____________ . ________________

June ___ __ ... _ . _ .. __ __ . __ _____July - -.


Maximum

3,640 4,560

806 3,7704,030 1,760 3,020

236 332 864

4,700 1,340

4,700

Minimum

46 315

282 350 236 80 70 37 34

121

34

Mean

530 830 328 694 115 939 809 148 142 129 912 379

579

Persquare mile

1.85 2.89 1.14 2.42 .401

3.27 2.82 .516 .495 .450

3.18 1.32

2.02

Run-off in inches

2.13 3.22 1.31 2.79 .42

3.77 3.15 .59 .55 .52

3.67 1.47

23.99


POTOMAC RIVER AT POINT OF ROCKS, MD.

LOCATION. At steel highway bridge at Point of Rocks> Frederick County, one- third of a mile below Catoctin Creek and 6 miles above Monocacy River.

DRAINAGE AREA. 9,650 square miles.RECORDS AVAILABLE. February 17, 1895, to September 30, 1926.GAGE. Chain gage attached to downstream side of left span of bridge; read by

W. W. Compher. Datum constant since September 2, 1902; prior to this date datum was 0.45 foot higher than at present. Sea-level elevation of jzero of gage, 200.54 feet.

DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Practically permanent. Control is a rock ledge a few

hundred feet below station, the ledge extending completely across the itiver except for one small channel.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 10.80 fee^t at 4.30 p. m. February 26 (discharge, 55,200 second-feet); minimum stage, 0.64 foot at 2 p. m. October 1 (discharge, 922 second-feet).

1895-1926: Maximum stage recorded, 32.2 feet May 13,1924 (discharge, 258,000 second-feet); minimum stage, 0.38 foot September 10, 1914 ^dis charge, 540 second-feet).

The crest of the flood of June 2, 1889, as determined by the United Spates Engineer Corps from high-water marks, reached a stage of 40.2 feet (dis charge, about 320,000 second-feet).

ICE. Stage-discharge relation affected by ice.DIVERSIONS. The Chesapeake & Ohio Canal parallels the Potomac on the

Maryland side. The average discharge of the canal is 75 to 100 second^feet. The discharge of the canal is not included in the records for this station.

REGULATION. Fluctuation at extremely low stages has been noted and is prob ably caused by the operation of power plants or storage reservoirs oii the upper Potomac and its tributaries.

ACCURACY. Stage-discharge relation practically permanent; affected bjf ice December 27 to January 5 and January 10-19. Gage read to hundredths once daily; during high water read oftener. Rating curve well defined. Daily discharge ascertained by applying gage height to rating table exceptfor period affected by ice. Records good.

%The following discharge measurement was made:October 1, 1925: Gage height, 0.68 foot; discharge, 982 second-feet.

Daily discharge, in second-feet, of Potomac River at Point of Rocks, Md.,for the year ending September 80, 1926

Day

1........ _ ....2..............3.. .............4.-. _ ... ___ .56-_. ...........7... _-_..__..__8... ............9..... .......

10...............11 _ ...... ......12........ .......13. ...........14...............15 16 17 18. iQ

20 .......

Oct.

9221,0001,0001,000

1,000

1,0001,7001,7001,9901,4201,4201,280

1,1801,4202,9207,3005.750

Nov.

3,2503,2502,9202,9202,7602,6009 fiftft

2,9203,580

5,0005,3708,550

18,60011, 2009,4108,1306,510

Dec.

2,9209 QOft

5,7508,130

18, 100

12,6008,9808,1307,3003,2502,9202,6002,2901,9909 fino,2,9203.080

Jan.,112,700

1

9 fiftft

2,600

,2,560

32.900

Feb.

11,20015,000

15,000

12,60012,60012,10011,600

8,98011, 600

8,S808,550

31,700

27, 70039. 400

Mar.

26,600

18,60016,000

13,100

11,20011,600

12,10011, 6009,4108,1307,7107,300

6.130

Apr.

11,20012, 600

12,600

11, 60010, 700

23,400

16, 5001 3 f^ftft

11,60010,70010, 3009,8509,4108.980

May

E 7EA

5,3705,0004,6304,2703 Q90

3,5803,580Q OKfl

3,250Q OKA

2,9203,2503,580

7,3007.710

June

3 7PCA

3,5803,2500 OKA

3,0802, 920

2,9209 Q9rt

2,6009 fiftft

2,290

2,9202,6002,4402,2902.290

July

1,990

1,6401,9304,2703,9203,5803,9204,2703,5803,2502,920

2,2901,9301,4801,3701,3701,4801,480

Aug.

2, 1402,4402,7603,0803, 4103,0802,7602,4402,140!1,960!1,9001,900!2,440!2,760!4,810'

6,9007,300!8, 130!5, 370!

13. 500

Sept.

6,9005,7504,8105,7506,5108,980

18,60018,10012,60011,20010,3006,9005,7504,8104,0903,7503,4103,0802,7602,440


Daily discharge, in second-feet, of Potomac River at Point of Rocks, Md., for the year ending September SO, 1926 Continued

Day

21.. ...... ...... .22...............23... ............24...............25

26. .......-27... ............28 29 . 30 -31.... ........

Oct.

3,920 3,580 3,250 2,290 2,920

3,750 5,000 8,130 6,130 5,000 4,270

Nov.

5,370 5,000 4,630 4,270 4,090

3,920 3,580 3,580 3,250 3,080

Dec.

3,250 3,250 3,250 3,250 3,080

2,920

2,860

Jan.

31, 700 22,300 31, 700 23,900 22, 300

14,500 13, 500 11, 600 10, 300 10,700 10,700

Feb.

34,200 30,600 46, 300 46,300 34,800

55, 200 47, 700 35,500

_.....

Mar.

6,510 6,900 6,900 7,710 8,130

8,980 9,410 9,410 9,410 9,410 9,850

Apr.

8,550 8,130 8,550 8,980 8,980

8,550 8,130 7,710 7,300 6,900

May

9,850 5,000 4,630 4,630 4,630

4,270 3,920 3,250 3,250 3,250 3,250

June

1,990 1,930 1,930 1,930 1,990

2,290 2,440 2,440 2,290 2,290

July

1,480 1,370 4,450 4,090 3,750

3,080 2,760 2,760 2,760 2,440 2,140

Aug.

29,400 36,100 28,800 18,600 14,500

17,600 18, 600 19,100 13,500 11,200 8,980

Sept.

2,440 2,760 3,080

23,400 20, 700

14,500 10,700 9,410 8,550 4,090

NOTE. Stage-discharge relation affected by ice Dec. 27 to Jan. 5 and Jan. 10-19; discharge estimated by study of weather records and observer's notes. Discharge estimated Apr. 13.

Monthly discharge of Potomac River at Point of Rocks, Md., for the year endingSeptember 30, 1926


Month

October.-. ___ . _ ___ __ .. _ .

March.. --_ _ __ ..... ....April ...................................... .May. ________________________June. __ ________ _ _ _ ... ..July...........................................August __________________ . .......

The year. ________________

Discharge in second -feet

Maximum

8,130 35,500 18,100 32,900 55,200 26,600 23,400 9,850 3,750 4,450

36, 100 23, 400

55,200

Minimum

922 2,600

8,550 6,130 6,900 2,920 1,930

. 1,370 1,900 2,440

922

Mean

2,760 6,820 5,290 9,210

23,000 10, 800 11, 500 4,550 2,640 2,650 9,600 8,200

7,970

Persquare mile

0.286 .707 .548 .954

2.38 1.12 1.19 .472 .274 .275 .995 .850

.826

Run-off in inches

0.33 .79 .63

1.10 2.48 1.29 1.33 .54 .31 .32

1.15 .95

11.22

SAVAGE RIVER AT BIOOMINGTON, MD.

LOCATION. At Bloomington, Garrett County, 1,400 feet above mouth and 2 miles above Piedmont, W. Va.

DRAINAGE AREA. 115 square miles (measured on topographic map).RECORDS AVAILABLE. May 3, 1905, to July 15, 1906; October 31, 1924, to Sep

tember 30, 1926.GAGE. Vertical staff attached to bedrock on right bank; read by W. P. Wagner.

Sea-level elevation of zero of gage, 970.23 feet. Gage readings for 1905 and 1906 not referred to datum of gage established in 1924.

DISCHARGE MEASUREMENTS. Made by wading or from highway bridge 1 mile above gage.

CHANNEL AND CONTROL. Channel curved above and below gage. Bed com posed of small and medium sized boulders. Banks high and clean, not subject to overflow. Control changed by .floods.

EXTREMES OF DISCHARGE. Maximum discharge recorded during year, 2,730 second-feet at 8 a. m. November 13; minimum discharge, 2.7 second-feet October 1.

1924-1926: Maximum discharge, that for 1926; minimum discharge, 2.4 second-feet September 11, 1924.


DIVERSIONS. The cities of Piedmont and Westernport obtain their water supply from the river above the gaging station. The diversion for this purpose was about 3 second-feet November 1, 1924. Water is also diverted at Bond, Md., by the Baltimore & Ohio Railroad.

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation apparently changed March 31, 1926.

Rating curves fairly well denned. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except when flow is affected by ice. Records good.

Discharge measurements of Savage River at Bloomington, Md., during the year endingSeptember SO, 1926

Date

Nov. 11.. ......Dec. 18.........Dec. 18.........

Gage height

Feet 4.163.293.34

Dis charge

Sec.-ft. 2528891

Date

Jan. 14-.-......

Gage height

Feet -3.13

4.59

Dis charge

-Sec. -ft. 61.4

426

Date

Mar. 31...-..--.

Gage height

Feet 4.672.14

Dis charge

Sec./*. 56315.0


Daily discharge, in second-feet, of Savage River at Bloomington, Md., for the year ending September SO, 1926

Day

1. ___ ..--....2 _ ........ ....3...............4. ...........5...............

6....... ___ ...7...............8.. .............9...............10...............

11 .. ..-.12...............13. . 14...............15... ............

16...............17........... .18 19 20...............

21...............22..... ..........23...............24.. 25... ............

26....... ........2728 29 .... ........30 31... .. ..

Oct.

2.72.8

10827167

542817 fi13

108.5810

140

1081,170436282176

13111594101837

714370251187167140

Nov.

131123140140149

187198436487

266266

2,250970754

391282223198187

158149131115101

94108123101101

Dec.

101101149187210

332298236210187

158167167158131

1401159485101

88101886274

30

Jan.

\

( AA

104

58

1,480640

4361,220574282236

187

114

Feb.

144

80

1 198

487436

3511,3701,580

574

1,270574332

Mar.

266391

186

223

2101671318273

«210

315370487487391

370266223210298436

Apr.

672480390333280

2653155565564.O4.

390

250209184

162142132

88

8278737373

6357605749

May

4725424138

3634333432

3230262727

2728263633

2930282727

232321201918

June

19232119

* 36

3832322822

2021234436

3731282423

.1821232017

1618151413

July

1212121223

3324161417

1412111314

12 12

111817

131153

480196

12479696610075

Aug.

5153474140

3926141211

1111111011

1532132152703

844480390280250

196172124172108

Sept.

75280370315457

370412333250236

142108857158

5fr44373332

6636

209152124

265184162152132

NOTE. Discharge estimated because of ice from observer's notes and weather records Dec. 26 to Jan. 18, Jan. 27 to Feb. 18, Mar. 3-9, and 16-19. Braced figures show mean discharge for periods indicated.


Monthly discharge of Savage River at Bloomington, Md., for the year endingSeptember 80, 1926


Month

July.. ......................................


Maximum

1,170 2,250

332 1,480 1,580

487 672 47 44

480 844 457

2,250

Minimum

2.7 94

49 18 13 11 10 32

2.7

Mean

190 310 126 220 346 232 230 29.6 24.4 50.8

151 175

172

Per square mile

1.65 2.70 1.10 1.91 3.01 2.02 2.00 .257 .212 .442

1.31 1.52

1.50

Run-off in inches

1.90 3.01 1.15 2.20 3.13 2.33 2.23 .30 .24 .51

1.51 1.70

20.21

CACAPON RIVER NEAR GREAT CACAPOW, W. VA.

LOCATION. At Rock Ford, 6J4 miles above Great Cacapon, Morgan County, and mouth of river.

DRAINAGE AREA. 670 square miles.RECORDS AVAILABLE. December 12, 1922, to September 30, 1926.GAGE. Vertical staff nailed to tree on left bank 150 feet above suspension foot

bridge; read by Mrs. J. W. Clingerman.DISCHARGE MEASUREMENTS. Made from footbridge or by wading.CHANNEL AND CONTROL. Bed composed of bedrock and boulders; banks subject

to overflow; control at low stages in rock ledge 100 feet below footbridge.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 7.10 feet at

8 a. m. February 20 (discharge, 4,870 second-feet); minimum stage, 0.40 foot at 8 a. m. October 2 (discharge, 40 second-feet).

1922-1926: Maximum stage recorded, 19.32 feet at 6 p. m. May 12, 1924 (discharge, by extension of rating curve, 34,000 second-feet); minimum stage, 0.38 foot at 3.30 p. m. July 28, 1923, and September 25, 1925 (dis charge, 38 second-feet).

ICE. Stage-discharge relation affected by ice during severe winters.ACCURACY. Stage-discharge relation practically permanent except for ice effect.

Rating curve fairly well defined below 30,000 second-feet. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except when stage is affected by ice. Records good.

The following discharge measurements were made:January 15, 1926: Gage height, 0.83 foot; discharge, 90.5 second-feet (stage-

discharge relation affected by ice).April 1, 1926: Gage height, 2.19 feet; discharge, 519 second-feet. June 29, 1926: Gage height, 0.75 foot; discharge, 89.9 second-feet.


Daily discharge, in second-feet, of Cacapon River near Great Cacapon, W. Va., for the year ending September 80, 1926

Day

1 .... ........2.. ........... ..3.... ........4 5 .

6 ............7 ____ . .......8.'.. ...... ...9... ............10..

11 12...............13... .........14 _ ............15

16.. .............17. __ .. _ ..18......... ...19. - . 20... ..........

21.. _ ....22 .... .......23 .....24 . 25 -

26 .............27 28...............29...............30 .31

Oct.

4441556672

7973787468

6051515151

517682847Q

7692727282

10012315513111395

Nov.

897987827Q

939595100111

121123359

1,210704

417307231204167

144

119111106

102

979287

Dec.

85113144

1,140960

1,0201,210753564437

359291260231217

179

155155155

144133129125113

100

Jan.

131133121108Q7

99100

100

979599275

1,7301,080

753

7fU

457704609499

Feb.

8031,8901,4201,5701,210

1,140704803753609

609520609609

2,620

1,8901,7301,7302,8204,480

3,2603,2604,1002,8202,060

2,4201,730

Mar.

1,2801,140960753609

542478564564

- 457

417397378341291

275275275260245

97 e

275260260260

291307397437437457

Apr.

520803803753704

564609

2,1502,3302,060

1,4201,140906803704

656

520478

397359341324324

324291275245231

May

217217217204191

179179179167155

155144

144144

167Qfin

1,3509067fU

542437359324291

260231204204191167

June

155144131123127

127144155144119

10610097100144

155167155131111

102959295100

1091111008579

July

7066647082

275499291204167

14492847878

7367666463

5951526195

155167113979385

Aug.

6766635859

6461635555

5254545148

486899

6091,570

2,8202,0601,140704

1,280

1,4901,420854609417378

Sept.

231245217378359

1,0201,420609609478

378275231191167

155

129117106

167167179204191

275341307260217

NOTE. Discharge estimated because of ice Dec. 26-31 and Jan. 8-15, from gage reader's notes and weather records. Braced figures show mean discharge for periods indicated.

Monthly discharge of Cacapon River near Great Cacapon, W. Va., for the year endingSeptember 30, 1926


Month

July ... ...........


Maximum

155 1,210 1,210 2,420 4,480 1,280 2,330 1,350

167 499

2,820 1,420

4,480

Minimum

41 79 85 95

520 245 231 144 79 51 48

106

41

Mean

77.3 195 317 470

1,850 457 734 321 - 120 117 530 325

450

Per square mile

0.115 .291 .473 .701

2.76 .682

1.10 .479 .179 .175 .791 .485

.672

Run-off in inches

0.13 .32 .55 .81

2.87 .79

1.23 .55 .20 .20 .91 .54

9.10


WOBTH BIVER WEAR BURKETOWff, VA.

LOCATION. At Weaver's farm, 2 miles northwest of Burketown, Augusta County, and 7 miles above confluence with Middle River.

DRAINAGE AREA. 381 square miles (measured on topographic map).RECORDS AVAILABLE. June 1 to September 30, 1926.GAGE. Slope and vertical staff gage on left bank; read by B. E. Weaver.DISCHARGE MEASUREMENTS. Made from suspension footbridge 1,200 feet

below gage or by wading.CHANNEL AND CONTROL. Bed composed of boulders and ledge rock; clean and

permanent. Banks clean. Right bank may be overflowed; left bank high. Control is a rock ledge 150 feet below; clean and permanent.

EXTREMES OF DISCHARGE. Maximum stage recorded during period of record, 8.61 feet at 11.30 p.m. July 23 (discharge, 5,600 second-feet); minimum stage, 1.37 feet during mornings of July 21, 23, 29, and August 12 and 13 (dis charge, 56 second-feet).

ICE. Stage-discharge relation will be affected by ice during cold winters.ACCURACY. Stage-discharge relation permanent. Rating curve well defined

between 60 and 2,200 second-feet and extended beyond these limits. Gage read twice daily to hundredths. Daily discharge ascertained by applying mean daily gage height to rating table. Record good.

The following discharge measurements were made: June 1, 1926: Gage height, 1.77 feet; discharge, 242 second-feet. August 18, 1926: Gage height, 1.38 feet; discharge, 59.2 second-feet. , August 26, 1926: Gage height, 3.15 feet; discharge, 1,180 second-feet.

Daily discharge, in second-feet, of North River near Burketown, Va., for the year ending September 30, 1986

Day

1 _ ........ __ ....2..-.--.-..-..---...3. .......... ........^.. .................

6 ......... .......7...................8. ..................9.. ............ .....10.... ............

11. ....... _ .-...-.-12.......... ......13..... ............ ..14....... 15...................

June

237214193173178

163173148143

129134134134129

July

85858981134

143

818981

7797897793

Aug.

13497897381

icq

1051019381

7381"817381

Sept.

237231173173

308198 1163163

148153214163134

Day

16.... 17...................18. ............... ...19

21-. 22 23.. 24- , 25--.

26 9728-. 29. ..................30..-.-...-...- ...31...

June

134115115115110

10510589148134

9797939785

July

8193656581

626562

2,510101

11589858181

.183

Aug.

739797115115

163173193168914

1,480836573362314271

Sept.

134124124115115

11012481296134

124124us115124

Monthly discharge of North River near Burketown, Va., for the year endingSeptember SO, 1926


Month

July ......................................

September _______________ , __ .

The period.. ______________ ..


Maximum

237 2,510 1,480

308

2,510

Minimum

85 62 73 81

62

Mean'

136 169 i37 15S

175

Persquare mile

0.357 .444 .622 .415

.459

Run-off in inches

0.40 .51 .72 .46

2.09


SOUTH FORK OF SHENANDOAH RIVER NEAR LURAY, VA.

LOCATION. At highway bridge 4 miles southwest of Luray, Page County. Hawksbill Creek enters 10 miles below and Stony Run 2 miles above.

DRAINAGE AREA. 1,380 square miles.RECORDS AVAILABLE. April 26, 1925, to September 30, 1926.GAGE. Chain gage attached to downstream side of highway bridge; read by

Malcolm Ruffner.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of sand and gravel; probably permanent.

Control is gravel bar, probably permanent; some aquatic growth in summer. Banks lined with trees and brush; subject to overflow at high stages.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 7.72 feet at 5 p. m. January 19 (discharge, 7,210 second-feet); minimum stage, 1.94 feet at 5 p. m. November 5 (discharge, 110 second-feet).

1925-26: Maximum stage recorded, that of January 19, 1926; minimum stage, 1.78 feet at 7 a. m. September 28, 1925 (discharge, 74 second-feet).

ICE. Stage-discharge relation affected by ice.REGULATION. Flow during low water is regulated by a low dam three-fourths

mile above.ACCURACY. Stage-discharge relation permanent; affected by ice December 27

to January 1 and January 10-14. Rating curve well defined above 200 second-feet. Gage read twice daily to hundredths. Daily discharge ascer tained by applying mean daily gage height to rating table. Records good.

Discharge measurements of South Fork of Shenandoah River near Luray, Va., during the year ending September 30, 1926

Date

Feb. 2.. ........ ..............Feb. VS... ....................

Gage height

Fctt 5.296.47

Dis charge

Sec.-ft. 3,0304,750

Date

Mar. I........................

Gage height

Feet 4.774.18

Dis charge

Sec.-ft. 2,3301,640

Daily discharge, in second-feet, of South Fork of Shenandoah River near Luray, Va., for the year ending September 80, 1926

Day

1.. -. .

3 - -4 - . 5

6 T. ............ ..8. ----- -9 . 10

11.-,-. .-.12 . 13. 14 15

16 17 18 19 20 -

Oct.

292335335310305

360335335287278

207247335335442

305335360335310

Nov.

360415415415192

360360168310415

415442595780702

665530470388442

Dec.

470388820

2,1402,260

2,3901,4801,8001,040865

865702665630630

595562562530562

Jan.

450442470530

. 470

442442415415

360

388

388388910

5,6605,090

Feb.

2,0203,0602,650,2, 140*1,910

1,6901,5801,5801,5801,580

1,4801,4801,3801,9107,010

5,0803,4902,9202,780.2,920

Mar.

2,3902,1401,9101,6901,480

1,3801,2801,3801,4801,230

1,1801,1401,090955

1,000

1,000955910910910

Apr.

1,9102,1401,9101,5801,480

1,2801,1801,1801,4801,380

1,4001,4801,8001,9102,140

2,1402,0201,9101,9102,140

May

9551,000910820780

740702702702665

665702506595562

780910

1,0401,1401,040

June

630595595415562

500562530470500

470500442442415

388335335360390

July

310388310278530

530442442360335

269360470282260

335360207243292

Aug.

630562415360415

I 510

470442

400310222305278

296305335418958

Sept.

"820780702595500

690820595500442

470480470415500

470415530310470

63435 3(


Daily discharge, in second-feet, of South Fork of Shenandoah River near Luray, Va,, for the year ending September SO, 1926 Continued

Day

21... ...... ... ...22 23 24...............26

26 27 28 29 ......... ..30 31 .

Oct.

415415388415388

415388388470470360

Nov.

562442470442470

388442442360388

Dec.

530562530530530

530

4<in

Jan.

3,060

2,6502,0201,910

1,4801,3801 000

955910

i 4nn

Feb.

2,3902 9fifi

2,1402 1 A f\

3 34H

4 9104^0903 Ofifi

Mar.

910865865865820

955910

1,0901 1401,1401,480

Apr.

2,1402,3902,5202,2601,910

1,5801,2801,1801,0901,040

May

910780740665702

595702780865740665

June

415360442470360

470415388360388

July

310310388335

i fun

595415360335335335

Aug.

740702630595

1,000

3,9402,3901,8001,180

955865

Sept.

470415301sfifi470

470415562305360

NOTE. Stage-discharge relation affected by ice Dec. 27 to Jan. 1 and Jan. 10-14; gage reading in error Jan. 18, Aug. 11, and Sept. 4; gage not read Jan. 31, Feb. 28, Apr. 11, May 16, June 20, Aug. 6-8, Sept. 6 and 12. Discharge for these periods estimated.

Monthly discharge of South Fork of Shenandoah River near Luray, Va., for the year ending September SO, 1926


Month

April _.-. __ .._... .

July

The year


Maximum

470 780

2,390 5,660 7,010 2,390 2,520 1,140

630 1,040 3,940

820

7,010

Minimum

207 168 388

1,380 820

1,040 562 335 207 222 301

168

Mean

351 442 818

1,240 2,670 1,210 1,730

779 450 379 756 503

931

Per square mile

0.254 .320 .593 .899

1.93 .877

1.25 .564 .326 .275 .548 .364

.675

Run-off in inches

0.29 .36 .68

1.04 2.01 1.01 1.40 .65 .36 .32 .63 .41

9.16

MIDDLE RIVER NEAR GROTTOES, VA.

LOCATION. At highway bridge at Mount Meridian, Augusta County, \% milesabove confluence with North River and 3 miles west of Grottoes, RockinghamCounty.

DRAINAGE AREA. 360 square miles (measured on topographic maps). RECORDS AVAILABLE. February 17, 1925, to September 30, 1926. GAGE. Chain gage attached to downstream side of highway bridge; read by

E. M. Foster. DISCHARGE MEASUREMENTS. Made from downstream side of highway bridge

or by wading. CHANNEL AND CONTROL. Bed at measuring section clean smooth gravel and

sand; probably shifting during high stages. Control is riffle half a milebelow, composed of rock and gravel, clean; probably permanent.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 8.85 feet at8.30 a. m. January 18 (discharge, 2,500 second-feet); minimum stage, 2.05feet at 5.30 p. m. July 3 (discharge, 29 second-feet).

1925-1926: Maximum stage recorded, that of January 18, 1926; minimumstage, that of July 3, 1926.

POTOMAC EIVEE BASIN 253

Icu. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation permanent; affected by ice December 27

to January 3 and January 11-16. Rating curve well denned between 60 and 1,400 second-feet; extended beyond these limits. Gage read to hundredths occasionally and estimated most of the time by mark along the bank. Daily discharge ascertained by applying mean daily gage height to rating table. Records poor.

Discharge measurements of Middle River near Grottoes, Fa., during the year endingSeptember 30, 1926

Date

Feb. 1 . Feb. 26 _ . .

Gage height

Feet 5.276.30

Dis charge

Sec.-ft. 830

1,290

Date

Mar. 1.......... . - -_-

Gage height

Feet 4.303.99

Dis charge

Sec.-ft. 483377

Daily discharge, in second-feet, of Middle River near Grottoes, Va., for the yearending September 30, 1926

Day

1 .... - _2.......... .....8 4.. . .... .... .5 __ . ..--

6 ... .... -7... ...... ...8 ............9 __ . __ .. _ .10 ____ ........

11.. ........ -12 ___ ..........13 . 14 15.. _ ..........

16- 17... ............18 19.. __ .........20 ....... ....

21..... ..........22...............23 24. ...........25 _ ............

26...............27......... ......28...-...-... .29... ............30 31

Oct,

5658626568

7277808588

9193989693

8885859193

9691888480

777572706764

Nov.

6265626058

6060616567

7175

I 160

8891959999

9301

868280

7772706865

Dec.

6058

420

223

212201ion180

170Iflfl

150141141

132115110104OR

CO

fin

Jan.

I R*I ^

SO84

88899599

104

70

2122,2501,5001,100

880720640602438

356330304280OKfi

410

Feb.

880760532365330

317330330382410

356356330

2,2001,800

1,050720640602566

468356356oon

468

1 140680cnn

Mar.

468438438438410

410410410410410

382382382356356

330330317292268

245234ooo

oca

9Q9QfM

017QOfl

qqn

330

Apr.

356356330317317

317317330330330QOA

356356356356

330ssn330356356

356OQO

382

410OQO

ocaQonqru

May

245223212190ISO

170160150150141

1241129986

1 220

J HO132112102QO

124i *\nT\ni *\n150

June

160160150141141

141132124132132

132141141141132

12411510598so

80757067CO

KT

53

49QQ

July

3431303289

12472606062

6777737067

65fin586161

626068

124934

919ton

160too

ooq

280

Aug.

1 170

180

170inn141124102

919301

700°.

99QQ

180

Iftft170

KAfl

141

Sept

124115115115112

105109104102101

Q«099391CM

ft*

QA

QO

7777

7171Q1

7770

80

NOTE. Stage-discharge relation aflected by ice Dec. 27 to Jan. 3 and Jan. 11-16; gage heights in error Nov. 13-15, Dec. 3-9, May 15-21, Aug. 1-4,18-22, 25-30, and Sept. 26-30; gage readings in error 1 foot Aug. 14 to Sept. 30. Discharge for these periods estimated.


Monthly discharge of Middle River near Grottoes, Va., for the year endingSeptember SO, 1926


Month

July- .- . , _

The year _ .. __ . _________


Maximum

98

2,2502,200

468 410

160 280

124

2,250

Minimum

56 58

317 223 268

86 38 30 70

Mean

80.3 83.4

193 372 627 346 345 164 107 96.1

219 91.0

224

Persquare mile

0.223 .232 .536

1.03 1.74 .961 .958 .456 .297 .267 .608 .253

.622

Run-off in inches

0.26 26

.62 1.19 1.81 1.11 1.07 .63 .33 .31 .70 .28

8.47

SOUTH RIVER AT HARRISTON, VA.

LOCATION. At highway bridge at Harriston, Augusta County, 7 miles above junction of Middle and South Rivers.

DRAINAGE AREA. 222 square miles.RECORDS AVAILABLE. February 15, 1925, to September 30, 1926.GAGE. Chain gage attached to downstream side of highway bridge; read by

Mrs. Harry Patterson.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Bed rough with rocky bottom. Control 800 feet

below, composed of gravel and large boulders; clean and probably perma nent. Stage of zero flow at gage height 2.34 feet as determined June 5, 1925.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.00 feet at 5.30 p. m. January 18 (discharge, 1,470 second-feet); minimum stage, 2.83 feet at 6.30 p. m. August 12 (discharge, 27 second-feet).

1925-1926: Maximum stage recorded, that of January 18, 1926; minimum stage, that of August 12, 1926.

ICE. Stage-discharge relation affected by ice for short periods.REGULATION. Gristmill and low dam three-eighths of a mile above gage slightly

affects natural flow at low water.ACCURACY. Stage-discharge relation permanent; affected by ice December 29-31

and January 10-16. Rating curve well defined above 50 second-feet. Gage read twice daily to hundredths. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

The following discharge measurements were made: February 26, 1926: Gage height, 4.88 feet; discharge, 875 second-feet. March 1, 1926: Gage height, 4.22 feet; discharge, 408 second-feet. March 4, 1926: Gage height, 3.94 feet; discharge, 302 second-feet.


Daily discharge, in second-feet, of South River at Harriston, Va., for the year endingSeptember SO, 19%6

Day

1 2.. ............ .3...............4...............5...............

6... ............7...............8... ............9 ...... ....10...............

11 12...............13...............14...............15. ...........

16...............17 18...............19 . .20...............

21...............22...............23. _ ...........24... ............25 ............

26...............27 ............28...............29...............30...............31. ...........

Oct.

5051487351

4848545650

4247556158

5153474961

5056556149

566561606168

Nov.

5855645655

Kf\

50505058

54671289275

6255556154

5553555861

5558534855

Dec.

5867

1,410524416

CKO

3662531Q4145

120125111111111

102967611170

968310698102

1086751

I 501 ^

Jan.

76811

669090

948894

1 no

60

75665

1,230810

580580470366342

274

245170194366

Feb.

870636K94

470391

366342R49q/lo

342

28325397ft870

1,230

694636524

44^1

416366391366497

810608470

Mar.

416416Q4.O

974240

OOA

97ft270249224

240228917

187

180202191180167

174160174170209

187202173167167217

Apr.

366QAfl

274253217

Ofi91R7240249270

342524524497608

470391391366318

2832669.4H217213

187

167148

May

148136130125128

125133130

125

125125Qd106116

128145120$6118

90841259898

98125142118120118

June

94IfU948394

106106948478

7876868376

5475707272

5064677270

7269675350

July

556790174136

8881676969

8367646758

7072496058

4854538075

534948534561

Aug.

5568624847

4845554343

4941484150

8160649290

86HI686451

2701841289612381

Sept.

8384889086

7278757555

6492816666

6256686261

6053505660

7261605867

NOTE. Stage-discharge relation affected by ice Dec. 29-31 and Jan. 10-16; discharge estimated.

Monthly discharge of South River at Harriston, Va.,for the year ending September SO,1926


Month

February ____________________

April . May.. .. ... _ ... . .... _ ...

July . ..

September _______________ .........


Maximum

73 128

1,4101,2301,230

416 608 148 106 174 270

92

1,410

Minimum

42 48

253 160 145 84 50 45 41 50

Mean

54.7 60.0

190 262 511 223 301 119 77.1 69.8 77.2 68.7

165

Persquare

mile

0.246 .270 .856

1,14 2.30 1.00 1.36 .536 .347 .314 .348 .309

.743

Run-off in inches

0.28 .30 .99

1.31 2.40 1.15 1.52 .62 .39 .36 .40 .34

10.06

NORTH FORE OF SEEN AN DO AH RIVER AT COOTES STORE, VA.

LOCATION. At highway bridge at Cootes Store, Rockingham County, 1 mile below Brocks Gap and 3J4 miles above Broadway. Linville Creek enters from right "&% miles below.

DRAINAGE AREA. 215 square miles (measured on topographic maps).


EBCOEDS AVAILABLE. February 28, 1925, to September 30, 1926.GAGE. Chain gage attached to upstream side of highway bridge; read by

Edward A. Cootes.DISCHAEGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of gravel and sand, with projecting

ledge rock in several places; clean and probably permanent. Control is riffle 250 feet below, composed of gravel and boulders; clean and permanent.

EXTREMES or DISCHARGE. Maximum stage recorded during year, 9.07 feet at 4.20 p. m. August 25 (discharge, 3,830 second-feet); minimum stage, 2.10 feet October 1 and morning of October 2 (discharge, 1.5 second-feet).

1925-1926: Maximum stage recorded, that of August 25, 1926; mini mum stage, 2.10 feet from 4.30 p. m. September 27 to morning of October 2, 1925 (discharge, 1.5 second-feet).

ICE. Stage-discharge relation affected by ice during cold winters.ACCURACY. Stage-discharge relation permanent; affected by ice December 26

to January 1. Rating curve well defined below 2,000 second-feet and ex tended above. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table. Records good.

The following discharge measurements were made: February 1, 1926: Gage height, 4.86 feet; discharge, 755 second-feet. February 26, 1926: Gage height, 5.20 feet; discharge, 881 second-feet. March 1, 1926: Gage height, 3.90 feet; discharge, 321 second-feet.

Daily discharge, in second-feet, of North Fork of Shenandoah River at Cootes Store, Va., for the year ending September SO, 1926

Day

1-. .........23 _ ............4 _____ . .....5 _ ............

6-. .........7 _ .-_ 8 .........9...............10....-..-.-. .

11 ............12...............13...... ......14 .15...............

16 17 18 19 20... ....... .....

21...............22... ............23...... .........24. .....25...............

26 27..... ......28 29...............30 ..........31

Oct.

1.51.71.91.91 0

1.91.91.9

1.91.9

1.91.91.91.91.9

2.32.32.32.32.1

2.12.32.32.54.6

4.63.93.23.23.55.3

Nov.

4.64.64.64.65.3

5.36.06.06.06.0

6.016

156129104

4343433930

3030303022

2121181616

Dec.

1630185104

30425120114291

8264504439

3734303030

3027262622

15

Jan.

1516151515

15151515

1515151414

141493

800520

380322286217170

1341191045873124

Feb.

700610

360286

185234251234211

170179170341

1,410

850565565

1,020850

565480500400

1,020

900610420

Mar,

286268211170

1401191098273

8277645757

5050464643

4239393939

73126122126142304

Apr.

655480341286917

188185185217201

204234251251322

322286251217217

286286286217201

1 179142134132104

May

8980756964

5450484847

4339393835

420341286234195

168137124112104

717860534838

June

3735322833

3028272522

2121212124

2221202021

1715222117

1514131210

July

10Q fl9.0

53IISA

8220151312

1211109.09.0

8.08.06.55.34.6

4.64.63.97861

373737212018

Aug.

37584137100

6958423428

24211837112

48323269

341

700610460360

3,670

1,76054228617612697

Sept.

7564584847

122148736346

4640332824

2420202020

171414

655234

170126978475

NOTE. Stag weather record

(-discharge relation affected by ice Dec. 26 to Jan. 1; discharge estimated from study of i, observer's notes, and comparison with flow at other stations in same basin.


Monthly discharge of North Fork of Shenandoah River at Cootes Store, Fa., for the year ending September SO, 1926

[Drainage arefl, 215 square miles]

Month

October ___________ . _______ ..November _______________ __ ....

January _____________________

March _ ____________________April..................................... ...

July................................. ..........August


Maximum

5.3 156 304 800

1,410 304 655 420 37

156 3,670

655

3,670

Minimum

1.5 4.6

14 170 39

104 35 10 3.9

18 14

1.5

Mean

2.47 29.9 68.4

118 520 105 249 106 22.2 25.3

323 83.7

135

Per square mile

0.011 .139 .318 .549

2.42 .488

1.16 .493 .103 .118

1.50 .389

.628

Kun-offininches

0.01 .16- .37 .63

2.52 .56

1.29 .57 .11 .14

1.73 .43

8.52

NORTH FORE OF SHENANDOAH RIVER NEAR STRASBTTRG, VA.

LOCATION. At highway bridge 2 miles east of Strasburg, Shenandoah County, and 9 miles above confluence with South Fork of Shenandoah River. Pas sage Creek enters from right 4 miles below.

DRAINAGE AREA. 772 square miles (measured on topographic maps).RECORDS AVAILABLE. March 8, 1925, to September 30, 1926.GAGE. Chain gage attached to downstream side of highway bridge; read by

E. E. Wright.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of ledge rock, sand, and gravel; per

manent. Control is a rock ledge 150 feet below; permanent.EXTREMES OP DISCHARGE. Maximum stage recorded during year, 9.74 feet at

7.25 a. m. August 26 (discharge, 7,190 second-feet); minimum stage, 1.90 feet at 4.45 p. m. November 9 (discharge, 86 second-feet).

1925-26: Maximum stage recorded, that of August 26, 1926; minimum stage, 1.76 feet at 7 a. m. September 29, 1925 (discharge, 55 second-feet).

ICE.- Stage-discharge relation affected by ice during extreme cold winters.ACCURACY. Stage-discharge relation permanent; affected by ice December 27

to January 2 and January 11-19. Rating curve well defined above 70 second- feet and extended below. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except for periods affected by ice or as noted in footnote to table of daily discharge. Records good.

The following discharge measurements were made:February 2, 1926: Gage height, 3.86 feet; discharge, 1,400 second-feet.February 27, 1926: Gage height, 4.95 feet; discharge, 2,200 second feet.


Daily discharge, in second-feet, of North Fork of Shenandoah River near Strasburg Va., for the year ending September 30, 1926

Day

1.. __ ........2 3.. ....... ...4.. ..........5 ..... ... .

6 . ..... 7 8 ........ ... .9 .... .... ....10 ............

11 12..... ....... ...13 14 15 ... .........

16 17 18 19 ............20

21 .22.. ___ ........23 24 . 25

26 ..27 .....28.. _______29. 30 31

Oct.

108121128121114

148242148138114

106100128148114

121128121128148

121124141131177

200186173141165186

Nov.

152128161148134

14813410894138

1481522374.OQ

438

382226242190165

141182190161

182156186141108

Dec.

134173206200278

510730582438382

328278232221211

2001731481 t\fi

161

IXK

1*9

161148145

194

100

Jan.

1101101111481>!A

148152221I'M

128

1 120

1,920

1,1901,110918ftQQ

ftlQ

K1A

424417355278Qfto

Feb.

5461,5101,4301,270918

768656656656656

619546474582768

2,3701,8301,5902 1903,' 100

1,9201,6701,5901,5501,510

o cftn

2,1001,510

Mar.

1,2701,030918768619

619546582546510

438474438410382

396355368342342

302328302302302

315348424431424474

Apr.

5101,030918768619

546546510510546

510510546546619

693656619582546

546656656619582

510438424403382

May

368342315328328

309290260260260

260226211226211

4381,190918693582

474438403375361

335302284272248237

June

226216206242216

192169169169177

165156190182186

237195145156161

138138169186161

237161124156154

July

152138134131510

322 248206145138

169

-L?U

114128

121121103128

1,190

382182211169165186

Aug.

284375248182173

182296438342290

190152266

1,6701,030

396309290355438

510656955805

1,030

5,8702,1901,7501,180619510

Sept.

361375368342296

4241,350842510410

382

290

221237200

211221266

2,3701,750

842582474438410

NOTE. Stage-dischar 24, Mar. 14, Apr. 4, 29,

e relation affected by ice Dec. 27 to Jan. 2 and Jan. 11-19. Gage not read Feb. ay 9, June 6, 30, July 12-18, Aug. 29, and Sept. 12-17; discharge estimated.

Monthly discharge of North Fork of Shenandoah River near Strasburg, Va., for the year ending September SO, 1926


Month

October.. ______________ . ..........

March....... _ . .....April. _____ __________________

June... ______________________July........ ..................................


Maximum

242 438 730

1,920 3,500 1,270 1,030 1,190

242 1,190 5,870 2,370

5,870

Minimum

10094

474 302 382 211 124 103 152 200

94

Mean

141 186 230 363

1,370 494 585 379 179 209 774 521

446

Per square mile

0.183 .241 .298 .470

1.77 .640 .758 .491 .232 .271

1.00 .675

.578

Run-off in inches

0.21 .27.34 .54

1.84 .74 .85 .57 .26 .31

1.15 .75

7.83

MONOCACY RIVER NEAR FREDERICK, MD.

LOCATION. At Ceresville Bridge, 3 miles northeast of Frederick, Frederick County, on road from Frederick to Mount Pleasant. Tuscarora Creek enters 300 feet above station.

DRAINAGE AREA. 665 square miles (revised).


RECORDS AVAILABLE. August 4, 1896, to September 30, 1926.GAGE. Chain attached to downstream handrail of right span of bridge; read by

Edward D. Shriner, jr.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. Bed of gravel and boulders; shifting during very high

floods. Banks lined with trees and brush; subject to overflow at high stages. Control not well defined.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 21.15 feet at 7.30 a. m. February 26 (discharge, 13,500 second-feet); minimum stage, 3.8 feet October 2 (discharge, 24 second-feet).

1896-1926: Maximum stage recorded, 27.2 feet at 11 a. m. January 13, 1915 (discharge, 19,000 second-feet); minimum stage, 3.54 feet several days in October, 1910 (discharge, 15 second-feet).

ICE. Stage-discharge relation affected by ice during severe winters.ACCURACY. Stage-discharge relation changed, probably during high water

August 13. Rating curve used prior to shift well defined below and fairly well defined above 5,000 second-feet; curve used after August 13 well defined above 500 second-feet and poorly defined below. Gage read to half-tenths once daily. Daily discharge ascertained by applying daily gage height to rating table. Discharge for periods of ice effect December 26-31, January 1-4, 8-17, February 12 and 13, estimated from temperature and rainfall records and observer's notes. Records fair.

The following discharge measurement was made:March 24, 1926: Gage height, 5.61 feet; discharge, 590 second-feet.

Daily discharge, in second-feet, of Monocacy River near Frederick, Md., for the yearending September SO, 1926

Day

12. __ ..........3 4 6 - -

67. ___ . ...8 ... ... ... 9...............10 - -.

11 ...12 - 13 14 .15........ ..

16 1718 ..19 20

21 »22- _ 2324 26 . ..

26.... ...........-27.-..... ..28.. .....29 ..30. ___ . ..31. _ ...........

Oct.

302488525660

3882701QS13468

68786888110

134

270198158

134134110110

1,170

1,420750465352335405

Nov.

335286240198158

146146335638548

525485

9,2901,5401,050

950son750660615

465

335286

302240

286

Dec.

255919

1,1701,6801,540

1 9Qfl1,170QKA

son660

570

KAK

AAK

37033533555 K

370Q7A

3703703Vft

[ 300

Jan.

[ 350I

335

240158

J iuft

200

7 4602,170

2 CQA

2,1701,9601 KAf\

1,110660

388525

Feb.

5,9309 inn1,540

705615

485570COG

660

335500700750

1,1701,170

5,4106,020

6,1105,9304 5fift3,1401,420

13,5004,7301 Qflft

Mar.

1,680

1,050850705

fifift1,5403,7509 fiQft2 100

750638KAQ

6381,000

750638465465

505570465505525

592548

485

1,050

Apr.

425

485485505

"US

638ncn

3,590

1,5401,050

QKft

950900

850705638^n^445

405465

405

525425388370

May

335335302255255

9.4ft240240212212

212198198198212

212226388

505

485465388335

212198171158146134

June

158158146158212

198212226184171

134134134122122

12211099110110

122

134198900

212352302158134

July

134999999146

171255212134122

887899146122

78888817178

8888122335286

184171134999978

Aug.

788899110110

2,100425286122146

198146

9,020830730

5501,9401,9402,0802,360

1,9401,8001,390730730

550372275230192180

Sept.

155125115192275

7301,040450276

4,100

830450372275260

218168115218205

146218125730275

640730550

1,9401,040

260 SURFACE WATER StJPPLY, 1926, PART I

Monthly discharge of Monocacy River near Frederick, Md,, for the year ending- September 30, 1926


Month

October.... ___________________

March.... ___________________

June...... ___________________July.... .. .. . .. ..............

The year.. ....................... ......


Maximum

1,420 9,290 1,680 7,460

13,500 3,750 7,550

505 900 335

9,020 4,100

13,500

Minimum

24 146 212

335425 352 134 99 78 78

115

24

Mean

305 771 568 878

2,620 947 947 266 188 135

1,020 565

754

Per square mile

0.459 1.16 .854

1.32 3.94 1.42 1.42 .400 .283 .203

1.53 .850

1.13

Run-off in inches

0.53 1.29 .98

1.52 4. 10 1.64 1.58 .46 .32 .23

1.76 .95

15.36

GREAT SENECA CREEK BEAR GAITHERSBURG, MD.

LOCATION. At concrete highway bridge on Frederick pike 2 miles northwest of Gaithersburg, Montgomery County.

DRAINAGE AREA. 41.0 square miles.RECORDS AVAILABLE. March 19, 1925, to September 30, 1926.GAGE. Chain gage bolted to downstream guard rail in left span of three-span,

concrete bridge; read by L. M. Andrews.DISCHARGE MEASUREMENTS. Made from bridge or by wading.CHANNEL AND CONTROL. One channel at all stages, straight for about 100 feet

above and below gage. Bed is composed of mud and gravel. Left bank above gage subject to overflow at about stage of 7.0 feet; right bank sloping; and subject to overflow at about stage of 4 feet. Banks below gage covered with willows, brush, and grass. Control at low and medium stages is at a small gravel bar caused by a sunken log 40 feet below gage; shifting. Chan nel control at high stages.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 7.20 feet at 11.30 a. m. January 18 (discharge, 520 second-feet); minimum stage, 1.10' feet August 13 and 7.30 a. m. August 14 (discharge, 5.7 second-feet).

1925-1926: Maximum discharge recorded, 570 second-feet September 13, 1925 (gage height, 6.45 feet); minimum stage and discharge occurred in 1926.

ICE. Stage-discharge relation affected by ice during severe winters.ACCURACY. Stage-discharge relation fairly permanent except during ice periods.

Gage read to hundredths twice daily. Rating curve fairly well defined. Daily discharge ascertained by applying mean daily gage height to rating: table. Records fair.

Discharge measurements of Great Seneca Creek near Gaithersburg, Md* during the year ending September SO, 1926

Date

Feb. 25... ...Do... ......

Do

Gage height

Feet 2.586.276.241.691.68

Dis charge

Sec.-ft. 70 n

45035432.933.4

Date

July 16 .Do

Gage height

Feet 1.561.331.331.331.16

Dis charge

Sec.-ft. 27.113.514.314.27.6

Date

Aug. 26.. Do .

Sept. 16 __ . ...Do

Gage height

Feet 1.551.541.331.32

Dis charge

Sec.-ft. 25. 925.515.915.7


Daily discharge, in second-feet, of Great Seneca Creek near Gaithersburg, Md., for the year ending September SO, 1926

Day

1. __ ... _ ....2~ _ . _ ...3...............4 . .5 6.. ..........7...............8 ____ . ......9...............10 11 12...............13.. ______ ...14 15. ________ .16........ ..17 ..........18...............19 ............20 21 .22. __ .... __ ..23 24 ..........25- ___ 26. __ ... ...... .27 28...... .........29 30. ___ - __ ..31 ............

Oct.

1213.527.51825.516.515.514.516161617.51819.54023.532242219.5202122341204732292724.528.5

Nov.

3030322826282655373128.532994740994440373432323029.528283028.527.526

Dec.

262650374042343232302928.528.53026.52725.525.524252627262525

uI2020

Jan.

91

2222.5252726.523.521302527.521202021.519.526.519569

4466444034342826.53226.5190

Feb.

99444(1

373232343431292929314410675

11381

2516966555847206755542

Mar.

M.

473737344052443740373434283031^n3030313129.531292840322928.52737

Apr.

3229sn2707

293437443434343028292725.525252424.523.5242323.521.520.521.521.521.5

May

20.520.519.52010 1

201918.518181716.516.51717.5422521.52921191818.51817.516161515.51515.5

June

3117.5151617.517.517.516.514.5141315.515141613.5121212111110141211.510.5119.68.88.0

July

8.07.67.6371644418.5151415.512.511.511.5121616.512.512119.6

109.28.410.517.59.28.88.8109.29.6

Aug.

13.510.5159.fi7.6

20.5149.68.08.07.36.55.7

10618.55220.5273026.5302620345227.51915.514.512.511.5

Sept.

1111.5121212

2064021.531472419.5171614.514.5141414131312.512.5

494814734344734

NOTE. Stage-discharge relation affected by ice Dec. 26-29, Jan. 13,14, and Feb. 10-12; discharge estimated from study of observer's notes and weather records. Discharge for Jan. 18 determined by approximate integration of graph from gage readings.

Monthly discharge of Great Seneca Creek near Gaithersburg, Md., for the year endingSeptember SO, 1926

[Drainage are, 41.0 square miles]

Month

January

March ___ . ___ . ___ . ... . . ... .

May ..__ _.__

July

September . ___ . _ __ . .................


Maximum

120 99 50

295 251

52 44 42 31

164 106 494494

Minjmnm

12 26

19.5

27 20.5 15 8.0 7.6 5.7

115.7

Mean

26.2 37.2 27.9 44.2 65.9 34.5 27.6 19.4 13.9 18.3 21.9 45.831.6

Per square mile

0.639 .907 .680

1.08 1.61 .841 .673 .473

' .339 .446 .534

1.12.771

Run-off in inches

0.74 1.01 .78

1.24 1.68 .97 .75 .55 .38 .51 .62

1.25

10.48

NORTHWEST BRANCH OF ANACOSTIA RIVER NEAR COLESVIIIE, MD.

LOCATION. At highway bridge at site of old Northwest Mills, 1% miles south west of Colesville, Montgomery County, and 3 miles above Burnt Mills.

DRAINAGE ABBA. 21.3 square miles (measured on topographic maps).RECORDS AVAILABLE. February 27, 1924, to September 30, 1926.GAGE. Vertical staff gage bolted to downstream side of right abutment of

bridge; read by F. E. Valdenar.DISCHARGE MEASUREMENTS. Made from bridge or by wading.


CHANNEL AND CONTROL. One channel at all stages, curves above and below bridge. Bed composed of fine sand, coarse gravel, and stones. Banks clean and subject to overflow at extreme high stages. Control is a rocky section 50 feet below bridge; shifting. .

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 6.1 feet during night of September 25 (discharge, about 1,000 second-feet); minimum stage, 1.28 feet at 7.15 p. m. August 13 (discharge, 2.3 second-feet).

1924-1926: Maximum stage recorded, 7.87 feet April 6, 1924 (discharge, about 1,600 second-feet; revised); minimum discharge, 2.0 second-feet July 20, 1925.

ICE. Stage-discharge relation affected by ice during severe winters.ACCURACY. Stage-discharge relation changes during floods. Rating curve

well defined below 400 second-feet and extended above. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table except as described in footnote to daily discharge table. Records fair.

Discharge measurements of Northwest Branch of Anacostia River near Colesville, Md., during the year ending September SO, 1926

Date

Nov. 13 _Nov. 21........Jan. 15 __Jan. 18 .Apr. 27

Do.........

Gage height

Feet 1.901.581.533.541.511.50

Dis charge

Sec.-ft. 44.0128.7

37010.710.6

Date

July 16 __ .....

Aug. 10. Do .........

Gage height

Feet 1.471.421.421.421.301.30

Dis charge

Sec.-ft. 9.25.86.36.22.62.6

Date

Do... Sept. 10

Do Sept. 28-

Do-...,.-..

aFeet 1.681.671.761.741.601.60

Dis charge

Sec.-ft. 19.520,222.622.212.111.6

Daily discharge, in second-feet, of Northwest Branch of Anacostia River near Colesville, Md., for the year ending September 30, 1926

Day

I.............2............ .3...............4...............6-....,-. ..6. _ ...........7....... .-_..._8...............9...............10.. .............11 ............12............13.... ...........14.............15............. .16...............17... ...........18... ............19...............20.... ...........21.... ...........22...............23... ............24...............25...............26 ..........27.... ...........28...............29... ............30... ............31.... ...........

Oct.

4.05.59.51310.05.55.55.06.06.56.06.57.58.5149.011.59.09.08.59.010.010.02061171111.51415.517

Nov.

172222

1413.513.534171413.576

91 321.518.54419171513.512.512.512.512.512.511.512.5111111

Dec.

11113799 <;3022.51513.513.512.512.512.512.512.51112.5119.61111.512.51312.511.511.5179.6

1 9.0

Jan.

9.09.6111313.513.51312.513.51211

t 9 51

Q n

9.69.6

216412324.552302016.516.5141312.513

144

Feb.

143242026.565203721.518.5201313.513.53959828590

4430353525.51543926.532

Mar.

2024.517.5

15.515.53226.54116.517.516.5

231413.51314141514141413.5142317.515.5141318.- 5

Apr.

18.515.5151413.515.2424.529.518.516.516.515.51413131312.51312.512.512.511.511.5131110.51111.511

May

10.510.510.59.49.49.49.49.49.49.48.58.58.59.49.4321510.5139.48.58.58.57.57.57.57.57.57.57.07.0

June

9.08.07.57.08.58.58.57.56.66.65.67.07.57.08.06.66.66.15.65.65.05.07.06.66.65.66.65.05.04.7

July

4.44.44.415.5

1923710.58.06.67.07.05.65.05.68.08.05.65.04.44.44.74.44.45.65.04.13.84.14.44.74.4

Aug.

11.55.64.43.83.23.53.22.92.62.62.62.62.55.66.6

10426.59.09.91422169.49.947199.07.56.15.34.7

Sept.

4.7446.14.74.7

12820489716.58.67.05.64.94.94.14.13.74.1-4.14.14.14.59.7

32587122318.517

NOTE. Stage-discharge relation affected by ice Dec. 28-31 and Jan. 12-14; discharge estimated from study of observer's notes and weather records. Discharge for period Aug. 16 to Sept. 5 obtained by shifting control.

RAPPAHANNOCK RIVER BASIN 263

Monthly discharge of Northwest Branch of Anacostia River near Colesville, Md.,for the year ending September SO, 1926


Month

October- ____________________November. _ _ ................................

April _______________________

July .. .......-...........................August __ ______ ___ ___ _ .......

The year..... ______________


Maximum

61 213

37 216 170 41 29.5 32 9

192 104 325

325

Minimum

4.0 11

9.0 13 13 10.5 7.0 4.7 3.8 2.5 3.7

2.5

Mean

11.5 25.1 13.8 26.6 49.3 18.0 14.8 9.87 6.68

12.8 12.3 31.0

19.1

Persquare mile

0.540 1.18 .648

1.25 2.31 .845 .695 .463 .314 .601 .577

1.46

.897

Run-off in inches

0.62 1.32 .75

1.44 2.40 .97 .78 .53 .35 .69 .67

1.63

12.15

RAPPAHANNOCK RIVER BASIN

RAPPAHANNOCK RIVER AT KELLYS FORD, VA.

LOCATION. At highway bridge at Kellys Ford, Culpepper County, 2 miles above mouth of Mountain Run, 5 miles south of Remington, and 15 miles above Rapidan River.

DRAINAGE AREA. 641 square miles (measured on topographic map).RECORDS AVAILABLE. February 7, 1925, to September 30, 1926.GAGE. Chain gage on upstream side of highway bridge; read by Billie "Roberts.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of sand and gravel below gage and

rough ledge rock above. Banks wooded; right bank low and will be over flowed; left bank high. Control 500 feet below composed of ledge trock and giavel; probably permanent.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 16.35 feet at 3 p. m. September 24 (discharge about, 13,200 second-feet); minimum stage, 1.60 feet at 5.15 p. m. October 2 (discharge, 21 second-feet).

1925-26: Maximum stage recorded, September 24, 1926; minimum stage, 1.50 feet at 6 p. m. September 9,1925 (discharge, 15 second-feet).

ICE. Stage-discharge relation affected by ice.ACCURACY. Stage-discharge relation peimanent; affected by ice December 27

to January 1 and January 10-13. Rating curve well defined between 25 and 6,000 second-feet. Gage read to hundredths twice daily. Daily dis charge ascertained by applying mean daily gage height to rating table. Records good.

Discharge measurements of Rappahannock River at Kellys Ford, Va., during the year ending September SO, 1926

Date

Oct. 1... Apr. 12.........

Gage height

Feet 1.693.13

Dis charge

Sec.-ft. 27.9

509

Date

Aug. 25....... ..Aug. 26 ...___

Gage height

Feet 9.538.10

Dis charge

Sec.-ft. 5,6004,110

Date Gage height

Feet 6.91

Dis charge

Sec.-ft. 2,990


Daily discharge, in second-feet, of Rappahannock River at Kellya Ford, Fa., for the year ending September SO, 1926

Day

1 .... .... ... .2 3 ............4 _ ............6 ............6.. .-.-.,.7 ... ... ... ...8 . .-9.... ...........10 11 12 _ ............13 H...... .........16 16 ............17 .18 19 20 21 22 23 24 25 .26 27 28 29 30 .. .......31

Oct.

282247488101881037162504427455055941451148678676353861521901851111039482

Nov.

90116109118111103105109118125137118

3,330930498424246209193185165168150132123145140140109123

Dec.

123300

3,5101,050810

2,000930692578472380360320290264320246222196218228246228199199209

160

Jan.

130114137193196225196147125

200

137168118460810

4,0501,7201,1701,5108706345784244QS424QKfl

460578

Feb.

1,7901,3001,0501,1701,110930870870810692578472750870

1,3701,1701,1101,1101,7201,5801,1701,0501,1101,0501,9302,5001,5101,110

Mar.

1,050870750663606524606692524448472448424340402380360340360340340340300300300320472360320300524

Apr.

930663498472424402402448810498424424380402380360300340360320282264246246282202228228246218

May

212264264225215206212202188188193185182168176246551472282264218190182174171168165163160147147

June

340448320158152182188171168135103123551225188150130118116105969092

3203802281521149890

July

8484

- 448246

1,11044828217913510912894808210310982715258554434

34081022811888716996

Aug.

1,5802821471039280135870163105826765605365103606360

1,3002,1401,9301,230870

3,4204,7501,6501,110810663551

Sept.

424578

1,050634663

1,8602,280810578

1,860551402380320300282264246228246215199193

7,6801,3701,170750634606551

NOTE. Stage-discharge relation affected by ice Dec. 27 to Jan. 1 and Jan. 10-13; gage not read Dec. 14, Jan. 17, and 30; gage reading in error Dec. 16 and Jan. 29. Discharge for these periods estimated.

Monthly discharge of Rappahannock River at Kellys Ford, Fa., for the year endingSeptember 30, 1926


Month

November __ . __ _ ... ______ . .

February _ . ______ _ ___ _ . __ ...

April

June _____________ _ __July August- ___ . _____ . ______ ... .....September. . _________________

The year... _ _ ___ _______


Maximum

810 3,330 3,510 4,050 2,500 1,050

930 551 551

1,110 4,750 7,680

7,680

Minimum

22 90

123 114 472 300 202 147 90 34 53

193

22

Mean

108292 496 556

1,170 467 389 219 191 192 821 911

479

Persquare mile

0.168 .456 .774 .867

1.83 .729 .607 .342 .288 .300

1.28 1.42

.747

Kun-ofE in inches

0.19 .51 .89

1.00 1.91 .84 .68 .39 .33 .35

1.48 1.58

10.15

RAPPAHANNOCK RIVER NEAR FREDERICKSBURG, VA.

LOCATION. At rear of McWhirt farm, \% miles above dam of Spottsylvania Power Co. and "&% miles above Fredericksburg, Spottsylvania County.

DRAINAGE AREA. 1,590 square miles.RECORDS AVAILABLE. September 19, 1907, to September 30, 1926.GAGE. Friez water-stage recorder on right bank; installed January 6, 1922;

inspected by Charles Perry.DISCHARGE MEASUREMENTS. Made from cable at gage or by wading 1 mile above.

RAPPAHANNOCK RIVER BASIN 265

AND CONTROL. Bed composed of boulders, somewhat rough. One channel for all stages. Banks wooded; water overflows right bank at stage of about 15 feet and left bank at about 12 feet. Current sluggish at ex tremely low water. Control is a rocky section a few hundred feet below gage; practically permanent.

EXTREMES OP DISCHARGE. Maximum stage recorded during year, 7.93 feet at 7 a. m. September 24 (discharge, 20,100 second-feet); minimum stage, 0.43 foot at 4 p. m. October 4 (discharge, 92 second-feet).

1907-1926: Maximum stage recorded, 16.5 feet at 1 a. m. May 13, 1924 (discharge estimated, about 66,000 second-feet); minimum stage, 0.28 foot from 2 to 5 a. m. September 15, 1925 (discharge, 64 second-feet).

ICE. Ice forms near gage but seldom in sufficient quantity at control to affect stage-discharge relation.

ACCURACY. Stage-discharge relation practically permanent. Rating curve well defined between 90 and 27,000 second-feet; extended beyond these limits. Operation of water-stage recorder satisfactory, except as indicated in foot note to table of daily discharge. Daily discharge ascertained by applying to rating table mean daily gage height obtained by inspection of recorder graph or by averaging discharge for intervals of a day. Records good.

The following discharge measurements were made:October 28, 1925: Gage height, 1.17 feet; discharge, 389 second-feet.June 5, 1926: Gage height, 1.26 feet; discharge, 475 second-feet.

Daily discharge, in second-feet, of Rappahannock River near Fredericksburg, Va., for the year ending September 30, 1926

Day

1 ............2 _ . _ . ___ .3. __ ....... ...4 __ .....5.. ..........

6 ...... ......7...............8.-. ........9.... _ ........10...............

11... ............12.-.--..........13 ............14... _...-.______15-... ........

16...............17...............18 .-.19.. . ......20 ..........

21. ___ ........22 _ ............23 - 24... ............25 ___ .....

26. . 27 ..........28.... ...........29. ...........30..... .....31 ............

Oct.

10010098108750

773330210176159

150

300

246210

199191188184306

566576AA'J

330285260

Nov.

237275336342312

290270275265285

285295

5,5903,4001,560

1,2601,140776646576

546500465439409

381381395V74.

342

Dec.

360732

10,8004,2202,380

4,7302,9202,0401,6701,400

1,2001,1401,070950891

832832776720678

710776832950832

776646

1 500

Jan.

,

I 500

595710

832832720482

I 590

5952,12011,000

H,350

12,0401,740

1,5301,3301,3301,0101,0701,270

Feb.

4,4004,3603,5105,3004,580

3,4302,9102,7302,3702,200

1,8901,6001,7402,9804,610

3,4902,9102,5503,2103,890

2,9102,3709 37fl2,7304,620

8,3904,0402,910

Mar.

2,5502,3702,2001,8201,600

1,4601,4601,8201,5301,260

1,2601,2601,2601,070950

1,010950891891891

891832776776776

7761,0101,010

776720926

Apr.

2,1701,6701,3301,2001,010

950891891

1,7801,790

1,2601,1401,1401,2001,200

1,0701,010950

1,0701,260

1,140950891832776

720678636626595

May

595657646576537

517508517500482

500508500500517

1,0301,7401,200

891776

657566537537527

500500500537482439

June

4831,070832556500

546586556517482

409374511776527

480410360306312

285280330295681

823566360312290

July

354306466534

1,040

1,3401,1001,190

556395

354336275250295

354360290237184

176159137132726

883374275232226400

Aug.

3,0001,000

280

215473562265

215173147143153

140397

1,4401,5604,260

5,4104,7602,8601,8904,850

11,0004,0302,6401,8901,5301,200

Sept.

1,0701,1603,0801,9201,460

3,8606,7302,7301,6804,770

2,0301,200950891

_ 832

776699657595576

576537517

12,3005,140

2,1001,7201,2001,0701,070

NOTE. Stage-discharge relation aflected by ice Dec. 28 to Jan. 3 and Jan. 10-16; recorder not operating Oct. 11-18, Jan. 20-23, June 16-18, and Aug. 3-6. Discharge for these periods estimated.


Monthly discharge of Rappahannock River near Fredericksburg, Va., for the year ending September SO, 1926


Month

October ___________ .. ____ . ___ .November __ ___ _ ._ .... . . ......

January _____________________

April..... ....................... ..... . .

June _______________________July. ........................... ...........

September... __________________ .

The y^ar. _________ _ ___ ....


Maximum

773 5,590

10,800 11,0008,390 2,550 2,170 1,740 1,070 1,340

11,000 12,300

12,300

Minimum

98 237 360

1,600 720 595 439 280 132 140 517

98

Mean

277 755

1,540 1,690 3,390 1,220 1,090

628 494 450

1,850 2,130

1,280

Per square mile

0.174.475 .969

1.06 2.13 .767 .686 .395 .311 .283

1.16 1.34

.805

Kun-ofl in inches

a 20.53

1.12 1.22 2.22 .88 .77 .46 .35 .33

1.34 1.50

10.92

RAPIDAN RIVER AT RAPIDAN, VA.

LOCATION. 1,000 feet below highway bridge in Rapidan, Culpepper County. Robinson Branch enters from left, 2 miles above station.

DRAINAGE AREA. 446 square miles (measured on topographic maps).RECORDS AVAILABLE. February 11, 1925, to September 30, 1926.GAGE. Staff gage on left bank; read by J. S. Holladay.DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of sand and gravel, Banks wooded

and will be overflowed. Control 500 feet below gage- consists of gravel bar underlain with ledge rock; clean and probably permanent.

EXTREMES OF DISCHARGE. Maximum stage recorded during year, 9.10 feet at 9 a. m. January 19 (discharge, 5,320 second-feet); minimum stage, 0.34 foot at 7 a. m. July 24 (discharge, 18 second-feet).

1925-1926: Maximum stage recorded, that of January 19, 1926; mini mum stage, 0.31 foot at 7 a. m. August 29, 1925 (discharge, 17 second-feet).

ICE. Stage-discharge relation affected by ice during cold winters.REGULATION. Flow regulated to some extent during low water by a dam 1,100

feet above.DIVERSIONS. None.ACCURACY. Stage-discharge relation changed January 19; affected by ice

December 26 to January 2. Rating curve used prior to January 19 well denned between 40 and 3,300 second-feet; curve used after January 18 well denned between 40 and 4,500 second-feet, extended beyond these limits. Gage read to hundredths twice daily. Daily discharge ascertained by applying mean daily gage height to rating table, except for period affected by ice. Records good.

Discharge measurements of Rapidan River at Rapidan, Va., during the year endingSeptember SO, 1926

Date

Apr. 13

Gage height

Feet 2 16Q 10

4.85

Dis charge

Sec.-ft. 464

4,4901 Qfift

Date

A n or Oft

Do -- - .- .

Gage height

Feet 4.304.12

Dis charge

Sec.-ft. 1,6701,500

YORK BIVEB BASIN 267

Daily discharge, in second-feet, of Rapidan River at Rapidan, Fa.,/or the year endingSeptember SO, 19%6

Day

1... . .......... .

3 ... ... ..... .4 ...5 6 ..... ... -7. - ...

9 10 11 12 1 ~13. 14 15 16 17 ......18 1020 21 22 23 24- 25 .......26 27 28 29 30 . 31

Oct.

47509494

2691119284su.75fifi606265100109190120Q98492868286195182145124107109127

Nov.

120127157127118122104

124109122145

1,830555356ono

238209195195182169157157145145145136136138

Dec.

120182

1,310735960

1,160735534Aty>°.cu

338302285253238253223223209209223OOO

302OOQ

223

185

Jan.

! 169195209209182169107320*>OQ

209

223209ono

1691,4103,730

1,0001,180

745600512413432394285413555

Feb.

1,4201,000845945

1,060895795745ftAK

645

479534895

1,000&dt\695645745745695600'695645

1,8001,5401 060845

Mar.

796745600534<109

452320492413375375375

320338338302285ono

285285269269269253285320285253253AQ9

Apr.

6004924323943563383384.1°.745512

472472534492452432d79<>1J.555

452432413394356320320302285

May

285285269253238238223223209209209195195195182C«M

S56269OKO

2231951QO

209195

209209182169157

June

189090

1571AQ

j IfiO

169157idi;

1241311 ft A

120

QQ

100113102O/L

100onidn269OOQ

1311110$)94QO

July

122847880223145

1,120

1QC

QQ

84on

751571097050AQ

403401

34961027370656656169

Aug.

472160inn1117756755668V7

4237Oft

6356of\

KQ

onono

1,120QJE

695.iOO

QOQ

O OQA

1,730845600452356

Sept.

OAQ

394472320

1,060795419qiy>645»

2852232092232091951QO

IfiQ

169157157145136

1 300'285

223TOO

100

169195

NOTE. Stage-discharge relation affected by ice Dec. 26 to Jan. 2; discharge estimated.

Monthly discharge of Rapidan River at Rapidan, Fa., for the year endingSeptember SO,


Month

March __ . _____ . _____ . __ ... .....April -. - . ...-. .........May.... ............ .......................

July.... .............. .........................August ______ . ______________


Maximum

269 1,830 1,510 3,730 1,800

795 745 534 269

1,120 2,290 1,300

3,730

Minimum

47 104 120 107 472 253 285 157 82 31 30

136

30

Mean

104 230 375 529 856 378 442 230 139 128 390 333

341

Persquare mile

0.233 .516 .841

1.19 1.92 .848 .991 .516 .312 .287 .874 .747

.765

Bun-ofl in inches

0.26 .58 .97

1.37 2.00 .98

1.11 .60 .35 .33

1.01 .83

10.39

YORK BIVEB BASIN

NORTH ANNA RIVER NEAR HEWLETT, VA.

LOCATION. At highway bridge midway between Chilesburg and Hewlett, Hanover County, 17 miles above mouth of Little River, and 19 miles above mouth.

DRAINAGE ABBA. 424 square miles (measured on topographic maps).RECORDS AVAILABLE. March 23 to September 30, 1926.GAGE. Chain gage on downstream side of highway bridge; read by C. W.

Smith.63435 30 18


DISCHARGE MEASUREMENTS. Made from highway bridge or by wading.CHANNEL AND CONTROL. Bed composed of ledge rock, boulders, and sand.

Banks high, wooded, and will be overflowed at extremely high stages. Con trol is ledge rock 100 feet below; probably permanent, except for being affected occasionally by driftwood.

EXTREMES OF DISCHARGE. Maximum stage recorded during the period end ing September 30, 1926, 9.35 feet at 2 p, m. August 21 (discharge, 2,010 second-feet); minimum stage, 3.62 feet at 2 p. m. August 14 (discharge, 49 second-feet).

ICE. Stage-discharge relation affected by ice during cold winters.ACCURACY. Stage-discharge relation permanent. Rating curve well defined

between 60 and 800 second-feet; fairly well defined above. Gage read to hundredths once daily except Sundays. Daily discharge ascertained by applying daily gage height to rating table. Records good.

The following discharge measurements were made: March 23, 1926: Gage height, 4.72 feet; discharge, 233 second-feet. May 14, 1926: Gage height, 4.18 feet; discharge, 135 second-feet. August 12, 1926: Gage height, 3.74 feet; discharge, 63.4 second-feet.

Daily discharge, in second-feet, of North Anna River near Hewlett, Va., for the year ending September 30, 1926

Day

1 ____ . _ . _ . ___ ........2. ..........3- .. .. ....__...__._..4...............................5

6_

8 _____ . . .......9

10 ... _ .....

11 -TO

1415 ......

16-- 17 . . ___ . ........18 ...1Q20

212223 ......2425

26 ...2728OQ

30q|

Mar.

225225225

225300262225225280

Apr.

624340280252225

225225225380320

439558380424448

320280504728402

320280243216212

207198180180189

May

180180180180171

145145145145145

137137137129137

508880280207207

189162150137129

121153145145141137

June

137129121121121

133145137113102

10295908686

8884828378

74243261261198

10096917174

July

*

155

78

7673605752

464557525957

Aug.

45071605752

5364113162105

6678544960

474171448728590

2,0101,160320225692

1,570658207180.153129

Sept.

121121137145160

95052844S153243

17114612197105

103105105102100

959797100129

129129121129113

NOTE. Oage not read Mar. 28, Apr. 4, 11, 18, 25, May 2, 9, 16, 23, 30, June 6, 13, 20, 27, July 1-19, 25 Aug. 1, 8, 15, 22, 29, Sept. 5, 6, 12, 19, and 26; discharge estimated.

MISCELLANEOUS DISCHARGE MEASUREMENTS 269

Monthly discharge of North Anna River near Hewlett, Fa., for the year endingSeptember SO, 1926


Month

March23-31 _

May.. .. . . _

July .


Maximum

300 728 880 261

2,010 950

Minimum

225 180 121

71

49 95

Mean

243 327 193 120 118 362 177

Per square

mile

0.673.771 .455 .283 .278 .854 .417

Run-off in inches

0.19 .86 .62 .32 .32 .98 .47

MISCELLANEOUS DISCHARGE MEASUREMENTS

In addition to the records of flow obtained at the gaging stations and reported in the preceding pages, measurements were made at other points, as shown by the following table:

Miscellaneous discharge measurements in North Atlantic slope drainage basins during the year ending September SO, 1926

Date

May 11

6Nov. 4Oct. 2

23

May 28June 9

22 July 29May 25

Feb. 4Oct. 22Dec. 1Jan. 8Feb. 18Mar. 12Apr. 21May 25

July 13Aug. 20Oct. 22

Feb. 18Mar. 12Apr. 21May 25

July 13Aug. 20Oct. 22Dec. 1Jan. 8Mar. 12Apr. 21

June 14July 13

Stream

Croix River.

do

..... do .... .

do ..... do do. ....... .

do ..... do ...... .. do ....... ... do . ... . -... ..do ........ .......do.... . ...... .do. ..... ...... .do ... do...

do ............. ..do ............... do. ....... do ....... ....... .do ......... ......do ........ ........ .do ........ do ..... ... .... ..do

do .... .do ...... ...........do....... ............... do .... . do ... .. .... .do ..... ..... do

Tributary to

.. do. ..............

.....do ..............

. .do.......... .......

do.... ........ .do. .r

River.

do ..... do ........ ... ........do.-. ..... ....... do........ ........... do .. ......

do..... do ............... do................. do do.......... ........... .do ..... do. ... ........ do . ........ ..........do......... .............do.... ........ do....... ......... . do....... . do. ......... do .......

.... .do ........ ....

.... -do ...... ...

.....do. ....... do........... .... do................. do...... ................do ...... ........

Locality

Waterville, Me ...

..... do.... ... ...

-do.. ... ..... ... ..do ........ ....... do

Gilbertville, Mass. ....

..... do ..... .... .... . .

.... .do.. ..... .... ......_ ..do..... __ . ____ ... ..do ...... ...... ... do .....do. ..... ..............do.. ... ......... do ..... do ..... ... ..

..do...... ... ................ . do. ... ........ ..do ..... ....... do .. ..do ..... ... ............ do do ... ... -do. ...... ....... -do.. .... ..... ... .

.....do ... .... ..... ..do. .... ............. .do ...... . .do. .... ... .... .....do __ ................do......... ......... ... do ..... ..... ...

Gage height

Feel

6.323.203.14 1.80

Dis charge

Sec.-ft.2,580

682,2906,6602,2302,370

176629209112

501.3

17.9

1942.54.94.6

12.69.66.24.93.21.88.6.12

1.31.06.76.71.41.2.52.10

2.51.62.83.07.12.62.41.7.67

270 SUBFACE WATER SUPPLY, 1926, PART I

Miscellaneous discharge measurements in North Atlantic slope drainage basins during the year ending September SO, 1926 Continued

Date

Oct. 22Dec. 1Jan. 8Feb. 18Mar. 12Apr. 21May 25June 14July 13Aug. 20Mar. 22

222229

Stream

.....do....... ..........

.....do .

.....do..................do

.....d6.._ ... ......

.....do.................

.....do...... ...........

.....do...... ...........

.. -do

.....do.................

Tributary to

.....do... ......... _ ..

.....do... .............. do -.. .....do .................. .do......................do.... ..................do.... ..................do.... ............. ..do . -..

..do........... .. -do

Locality

. _ .do .....................

.....do ........ ... .......

.....do ..................

.....do .................

.....do ....... .......

.....do... ... .... .... .......

.....do... ........... .......

.....do ... ........ ... ....

.....do ..................

New York Gas & Elec tric Corporation, at Col- liersville, N. Y.

.....do.... ....... ......

.....do ........... .......At Elm Street Bridge, bet

ween Main and River Streets, Hornell, N. Y.

Gage height

Feet

W

Dis- charge

Sec.-ft. 0.09.40.21

6.11.1.86.17.07.02

1.3227

1,1601,370

222

feet.Gage height at Main Street Bridge, 39.1 feet; gage height at River Street Bridge, 36.9 feet; slope, 2.20

I N D-E X

A Page

Absecon Creek at Absecon, N. J_____ 193-195 Accuracy of data and results, degrees of___ 4-5 Acre-foot, definition of ___.________ 2 Anaoostia River, Northwest Branch of, near

Colesville, Md.-. 261-263 Androscoggin River at Rumford, Me__.... 41-42

discharge measurements of_______ 269 Androscoggin River Basin, Me., gaging-

station records in ..___.... 41-43 Antrim, N. H., North Branch of Contoocook

River near.____________ 57-59 Appropriations, record of__.________ 1 Ashuelot River at Hinsdale, N. H._____ 83-84

near Gilsum, N. H____________ 81-82South Branch of, at Webb, near Marl-

boro, N. H...................... 86-87Assunpink Creek at Trenton, N. J_ __ 221-222 Athol, Mass., diversion canal at.____...k 269

East Branch of Tully River near____ 94-95 Aziscohos Dam, Me., Magalloway River at.. 43

Baileyville, Me., St. Croix River near___ 13-15 Batten Kill at Battenville, N. Y_....... 132-134Beaver Brook near Belvidere, N. J___.. 215-217 Beaver Kill at Cooks Falls, N. Y.......... 206-207Belvidere, N. J., Beaver Brook near__ 215-217

Delaware River at__________ 200-202Black River near Pottersville, N. J........ 184-185Blackstone River at Worcester, Mass_.. 66-67 Blackwells Mills, N. J., Millstone River

at.. . . . ......... 186-187Blairstown, N. J., Paulins Kill at......... 212-214Bloomington, Md., North Branch of Poto-

mac River at_ .... 243-244Savage River at....__ ...... 246-248

Bloomsbury, N. J., Musconetcong Rivernear........._... .__... 219-221

Boonton, N. J., Rockaway River at___. 158-159 Boundbrook, N. J., Green Brook at. __. 187-188 Bristol, N. H., Smith River near..____ 56-57 Burketown, Va., North River near____.. 250 Burtonsville, Md., Patuxent River near... 241-243

Cacapon River near Great Cacapon, W.Va-- ... ..__ ...._ 248-249

Campbell, N. Y., Cohocton River near._ 238-239 Canacadea Creek at Hornell, N. Y____ 236-237 Canisteo River, N. Y., discharge measure

ment of______________ 270 Carrabassett River near North Anson, Me.. 38-40 Charlemont, Mass., Deerfleld River at. 97-98 Chemung River at Chemung, N. Y....... 234-236

PageChenango Forks, N. Y., Chenango River

near. . __... 231-232 Chenango River near Chenango Forks,

N. Y. ...................... 231-232Clinton, Mass., South Branch of Nashua

River Basin near ..__ _ 63-64 Cobbosseecontee Stream at Gardiner, Me.. 40-41 Cochituate, Mass., Lake Cochituate Basin

near _______________ 64-65Cohocton River near Campbell, N. Y__ 238-239Cohoes, N. Y., Mohawk River at . 137-140Colliersville, N. Y., power canal at. . 270

Susquehanna River at ....... 224-226Computations, results of, accuracy of_ 4-5 Conklin, N. Y., Susquehanna River at. 226-227 Connecticut River at First Connecticut Lake,

near Pittsburg, N. H. ...... 71-72at South Newbury, Vt..__. 73-74 at Sunderland, Mass.. ____.. 76-78 at White River Junction, Vt..___._ 74-76

Connecticut River Basin, N. H.-Vt.-Mass.,gaging-station records in__._ 69-110

Contoocook River, North Branch of, nearAntrim, N. H. .__ ...... 57-59

Control, definition of_____________ 2 Cooks Falls, N. Y., Beaver Kill at. 206-207 Cooperation, record of_________-... 10-11 Cootes Store, Va., North Fork of Shenandoah

River at _____..... 225-257Cornish, Me., Ossipee River at. __ 48-49

Saco River at __ ____.. 45-46

DData, accuracy of... _ ... 4-5

explanation of..___ ___ 2-4Dead River at The Forks, Me ....... . 37-38Deep Run, N. J., discharge measurements of. 269 Deerfield River at Charlemont, Mass- _ 97-98 Delaware River at Belvidere, N. J..._.. 200-202 Delaware River, East Branch of, at Fishs

Eddy, N. Y ... 197-198 at Port Jervis, N. Y__ . . 199-200 at Riegelsvilla, N. J ... . 202-204 at Trenton, N. J...................... 204-206West Branch, of at Hale Eddy, N. Y.. 209-211

Delaware River Basin, N. Y.-N. J., gaging- station records in______.. 197-224

E

Eagle Bridge, N. Y., Hoosio River near 134-135 East Machias River, Me., discharge measure

ment of______________ 269 Elizabeth River at Elizabeth, N. J. ... 172-173 Erring, Mass., Millers River at....... ' 89-31Erwins, N. J., Tioga River near.. 233-234

271

272 INDEX

F Page

Falls Village, Conn., Housatonic River at.. 111-113 Far Hills, N. J., North Branch of Raritan

River near _._____.. 181-182 Farmington River near New Boston, Mass. 108-110 Ferry Brook, N. H., discharge measurement

of...__._.____............ 269First Connecticut Lake near Pittsburg, N. H. 70-71 Fishs Eddy, N. Y., East Branch of Delaware

River at._.___............ 197-198Flat Brook near Flatbrookville, N. J___ 211-212 Flatbrookville, N. J., Flat Brook near___ 211-212 Folsom, N. J., Great Egg River at......... 195-197Fox Creek at West Berne, N. Y___.... 145-146Foxcroft, Me., Piscataquis River near__.. 23-24 Framingham, Mass., Sudbury River near.... 64-65Franklin Junction, N. H., Merrimack River

at. _...__......._...... 51-53Frederick, Md., Monocacy River near __ 258-260 Fredericksburg, Va., Rappahannock River

near____._________ 264-266

G

Gaithersburg, Md., Great Seneca Creeknear.__.__..__.....__ 260-261

Gardiner, Me., Cobbosseecontee Stream at_ 40-41 Gardiner, N. Y., WallkiU River at.__.. 150-152 Gibbs Crossing, Mass., Ware River at.._ 99-100 Gilsum, N. H., Ashuelot River near____ 81-82 Goss Heights, Mass., Middle Branch of West-

field River at.....__........ 107-108Great Barrington, Mass., Housatonic River

near___......_____. 110-111Great Cacapon, W. Va., Cacapon River

near_._____________ 248-249 Great Egg River at Folsom, N. J_____ 195-197 Great Seneca Creek near Gaithersburg,

Md . . 260-261Green Brook at Boundbrook, N. J____ 187-188 Greenwood Lake, N. J., Wanaque River at. 165-167 Greenwood Lake at The Glens, N. J. __ 164-165 Grindstone, Me., East Branch of Penobscot

River at......................... 19-21Grottoes, Va., Middle River near...___ 252-254

H

Hackensack River at New Milford, N. J.. 153-155 Hackettstown, N. J., Musconetcong River

near.._____________ 217-219 Hadley, N. Y., Hudson River at...____ 118-120

Sacandaga River at_________.. 131-132 Hale Eddy, N. Y., West Branch of Delaware

River at... . .. 209-211 Harrisburg, Pa., Susquehanna River at_ 228-229 Harriston, Va., South River at_______ 254-255 Hewlett, Va., North Anna River near.__ 267-269 High Bridge, N. J., South Branch of Raritan

River near.__________ 175-177 Hinckley, N. Y., West Canada Creek at_ 141-142 Hinsdale, N. H., Ashuelot River at____ 83-84 Hope, N. Y., Sacandaga River near____ 129-130 Holland Patent, N. Y., Ninemile feeder

near_______________ 144-145 Hoosic River near Eagle Bridge, N. Y_ 134-135 Hornell, N. Y., Canacadea Creek at___ 236-237 Housatonic River at Falls Village, Conn.. 111-113

near Great Barrington, Mass.____ 110-111

Page Housatonic River Basin, Mass.-Conn.,

gaging-station records in___ 110-113 Hudson River at Gooley, near Indian Lake,

N. Y_........______... 115-116at Hadley, N. Y___ _.__..__ 118-120 at Mechanicvills, N. Y..._.......... 120-122at North Creek, N. Y.. ............ 117-118near Newcomb, N. Y._ 113-114

Hudson River Basin, N. Y., gaging-stationrecords in..._ 113-153

Indian Lake, N. Y., Hudson River near.. 115-116 Indian Lake Reservoir near.. ____ 122-123 Indian River near___________ 123-125

Indian Lake Reservoir near Indian Lake,N. Y.............__......... 122-123

Indian River near Indian Lake, N. Y 123-125

Jewett City, Conn., Quinebaug River at 67-69 Juniata River at Newport, Pa. . 240-241

East Bridge, N. Y., West Canada Creek at. 142-144 Keene, N. H., Otter Brook near. 84-86 Kellys Ford, Va., Rappahannock River at. 263-264 Kennebec River at Moosehead, Me.. 32-33

at The Forts, Me....__.......__.. 34-35at Watervflle, Me.... ___......... 35-36discharge measurements of_ . 269

Kennebec River Basin, Me., gaging-stationrecords in___ 31-41

Knightville, Mass., Westfield River at 103-105

Lake Cochituate Basin near Cochituate,Mass______ _ . 64-65

Lawrence, Mass., Merrimack River at 54-55 Lawrence Brook at Patricks Corner, N. J_ 189-191 Little Beaver Kill near Livingston Manor,

N. Y.... ................. 208-209Livingston Manor, N. Y., Little Beaver Kill

near_______ _ 208-209 Lodi, N. J., Saddle River at. . __... 170-172 Lowell, Me., Passadumkeag River at_..... 29-31 Luray, Va., South Fork of Shenandoah River

near______________ 251-252

M

Macopin intake dam, N. J., PequannockRiver at _ 168-170

Magalloway River at Aziscohos Dam, Me 43 discharge measurement of-. 269

Mahwah, N. J., Ramapo River near 161-162 Manchester, N. H., Merrimack River at 51-54 Manvflle, N. J., Raritan River at 179-180 Marlboro, N. H., South Branch of Ashuelot

River near__________._ 86-87 Mascoma River at Mascoma, N. H 80-81 Matawan Creek, N. J., discharge measure

ments of___... 269 Mattawamkeag River at Mattawamkeag,

Me _._ __...... 21-22Mechanicville, N. Y., Hudson River at 120-122 Medford, Me., Piscataquis River at. . 24-26

INDEX 273Page

Meaway, Me., West Branch of PenobscotRiver near___.___...__ 16-17

Merrimack, N. H., Souhegan River at...__ 62-63 Merrimack River at Franklin Junction, N. H. 51-53

at Lawrence, Mass____________ 54-55 at Manchester, N. H._ __...__ 51-54

Merrimack River Basin, N. H.-Mass., gaging-station records in . . 50-65

Middle River near Grottoes, Va_...__... 252-254 Millers River at Erving, Mass___.___ 89-91

near Winchendon, Mass_________ 88-89 MDlington, N. J., Passaic River near___ 155-156 Milh'nocket, Me., West Branch of Penobscot

River at......................... 15-16Millstone River at Blackwells Mills, N. J- 186-18? Milltown, N. J., North Branch of Raritan

River at. ............._... 182-184Milo, Me., Pleasant River at....____.... 28-29Mohawk River at Cohoes, N. Y_.___ 137-140

at Vischer Ferry Dam, N. Y.......... 136-137Monocacy River near Frederick, Md_... 258-260 Morristown, N. J., Whippany River at_ 160-161 Moss Brook at Wendell Depotj Mass____ 95-97 Moosehead, Me., Kennebec River at.__.. 32-33 Moosehead Lake at east outlet, Me.. 31-22 Musconetcong River near Bloomsbury,

N. J... ..................... 219-221near Hackettstown, N. J._ _ 217-219

N

Nashua River Basin, South Branch of, nearClinton, Mass.._________ 63-64

Navesink River Basin, N. J., gaging-stationrecord in._________.... 191-193

Xew Berlin, N. Y., Unadilla River near... 229-231 Xew Boston, Mass., Farmington River

near_________.__..-.. 108-110 Xew Milford, N. J., Hackensack River at. 153-155 Xewcomb, N. Y., Hudson River near__ 113-114 Newport, Pa., Juniata River at______ 240-241 Ninemile feeder near Holland Patent, N. Y. 144-145 Xorth Anna River near Hewlett, Va.--~. 267-269 North Anson, Me., Carrabassett River near. 38-40 Xorth Branch of Raritan River at Milltown,

N. J... _-....- _ . 182-184North Chichester, N. H., Suncook River at.. 60-62 North Creek, N. Y., Hudson River at..... 117-118North Creek at North Creek, N. Y........ 125-127Xorth River near Burketown, Va... .. 250 Xubanusit Brook near Peterboro, N. H_. 59-60

O

Ossipee River at Cornish, Me. ___ 48-49 Otter Brook near Keene, N. H..._.. 84-86

Passadumkeag River at Lowell, Me..... 29-31Passaic River at Paterson, N. J __... 157-158

near Millington, N. J_ ............ 155-156Passaic River Basin, N. J., gaging-station re

cords in.__._________ 155-172 Paterson, N. J., Passaic River at.__...- 157-158 Patricks Corner, N. J., Lawrence Brook at. 189-191 Patuxent River near Burtonsville, Md 241-243 Paulins Kill at Blairstown, N. J. ....... 212-214

PagePellets Island Mountain, N. Y., Walkill

River at.. . . . 149-150 Pemberton, N. J., North Branch of Rancocas

Creek at.._.__...... ._ 223-224Pemigewasset River at Plymouth, N. H__ 50-51Penobscot River at West Enfleld, Me___ 18-19

East Branch of, at Grindstone, Me___ 19-21West Branch of, at Millinocket, Me__ 15-16

near Medway, Me__________ 16-17Penobscot River Basin, Me., gaging-station

records in_.______....._ 15-31Pequannock River at Macopin intake dam,

N. J. .. .-. .. . 168-170Pequest River at Pequest, N. J__..._ 214-215Peterboro, N. H., Nubanusit Brook near__ 59-60Pine Bush, N. Y., Shawangunk Kill at . 152-153Piscataquis River at Medford, Me...___ 24-26

near Foxcroft, Me.____________ 23-24Pittsburg, N. H., Connecticut River near_ 71-72

First Connecticut Lake near._...__ 70-71Second Connecticut Lake near...___ 69-70

Pleasant River at Milo, Me. _________ 28-29Plymouth, N. H., Pemigewasset River at_ 50-51Poesten Kill near Troy^ N. Y............. 147-148Point of Rocks, Md., Potomac River at_ 245-246 Pompton Lake, N. J., Ramapo River at_ 163-164 Port Jervis, N. Y., Delaware River at..... 199-200Potomac River at Point of Rocks, Md__ 245-246

North Branch of, at Bloomington, Md. 243-244 Potomac River Basin, Md.-W. Va.-Va.,

gaging-station records in___ 243-263 Pottersville, N. J., Black River near___ 184-185 Presumpseot River at outlet of Sebago Lake,

Me..... .._..__........... 43-45Priest Brook near Winchendon, Mass...._ 92-94Providence River Basin, Mass., gaging-sta

tion record in........... _ 66-67Publications, information concerning...__ 5-9

obtaining or consulting of____ __ 6-7 on stream flow, lists of___________ 7,9

QQuaboag River at West Brimfleld, Mass... 102-103 Quinebaug River at Jewett City, Conn___ 67-69

R

Rahway River at Rahway, N. J_____ 174-175Ramapo River at Pompton Lakes, N. J_ 163-164

near Mahwah, N, J...... ......... 161-162Rancocas Creek, North Branch of, at Pember

ton, N. J. .... .... ._ . 223-224.Rapidan River at Rapidan, Va___ ...-.'.. 266-267 'Rappahannock River at Kellys Ford, Va_. 263-264

near Fredericksburg, Va.___.. . 264-266 Rappahannock River Basin, Va., gaging-sta

tion records in.._.. 263-267 Raritan River at Manville, N. J... . 179-180

North Branch of, near Far Hills, N. J. 181-182 South Branch of, at Stanton, N. J. 177-178

near High Bridge, N. J___ ... 175-177 Raritan River Basin, N. J., gaging-station

records in__ ________.. 175-191 Red Bank, N. J., Swimming River near... 191-193 Riegelsville, N. J., Delaware River at . 202-204 Riverbank, N. Y., Schroon River at .. 127-129

274 INDEX

PageEockaway River at Boonton, N. J..___ 158-159 Rumtord, Me., Androscoggin River at...... 41-42Run-off in inches, definition of.....____ 2

Sacandaga River at Hadley, N. Y._. __ 131-132 neat Hope, N. Y....__._.......... 129-130

Saco River at Cornish , Me.---_______ 45-46 at West Buxton, Me__.__._____ 47-48

Saco River Basin, Me., gaging-station recordsin..'.____._............._ 45-49

Saddle River at Lodi, N. J................ 170-172St. Croix River near Balleyville, Me_ __ 13-15

West Branch of, Me., discharge measure ment of______________ 269

St. John River at Van Buren, Me_____ 12-13 Savage River at Bloomington, Md____ 246-248 Schroon River at Riverbank, N. Y____ 127-129 Sebago Lake, Me., Presumpscot River at

outlet of. ._.___-- .-... 43-45 Sebec River at Sebec, Me_. ________ 26-27 Second Connecticut Lake near Pittsburg,

N. H ......_ . ...._.. 69-70Second-foot, definition of_*.________ 2 Second-feet per square mile, definition of._ 2 Shawangunk Mil at Pine Bush, N. Y__ 152-153 Shenandoah River, North Fork of, at Cootes

Store, Va _.____ .... 255-257near Strasburg, Va________ 257-258

South Fork of, near Luray, Va____ 251-252 Sip Pond Brook near Winchendon, Mass__ 91-92 Smith River near Bristol, N. H_______ 56-57 Souhegan River at Merrimack, N. H____ 62-63 South Newbury, Vt., Connecticut River at. 73-74 South River at Harriston, Va_______ 254-255 Stage-discharge relation, definition of.. 2 Stanton, N. J., South Branch of Raritan

River at....... .........__ 177-178Strasburg, Va., North Fork of Shenandoah

River near___________ 257-258 Sudbury River near Framingham, Mass.... 64-65Suncook River at North Chichester, N. H_ 60-62Sunderland, Mass., Connecticut River at_ 76-78Susquehanna River at Colliersville, N. Y. 224-226

at Conklin, N. Y____ __..._ 226-227at Harrisburg, Pa...__ .......__ 228-229

Susquehanna River Basin, N. Y.-Pa., gaging- station records in __ 224-241

Swift River at West Ware, Mass...___ 100-102 Swimming River near Red Bank, N. J__ 191-193

Taunton River, Mass., discharge measure ments of 269

Tennant Brook, N. J., discharge measure ments of . __ 269

Terms, definition of..... . _ 2The Forks, Me., Dead River at......___ 37-38

Kennebec River at__ ..__ 34-35

PageThe Glens, N. J., Greenwood Lake at 164-165 Thames River Basin, Conn., gaging-station

record in _______ 67-69 Thompsons Creek, N. J., discharge measure

ments of_____... -. 270 "Ploga River near Erwins, N. Y... 283-234 Trenton, N. J., Assunpink Creek at 221-222

Delaware River at 204-206 Troy, N. Y., Poesten Kill near.... .. 147-148 Tully River, East Branch of, near Athol,

Mass,. . ..... . . 94-95

Unadilla River near New Berlin, N. Y . 229-231/

V

Van Buren, Me., St. John River at. 12-13 Vischer Ferry Dam, N. Y., Mohawk River

at...... _....___ 136-137

W

Wallkill River at Gardiner, N. Y......... 150-152at Pellets Island Mountain, N. Y..... 149-150

Wanaque River at Greenwood Lake, N. J. 166-167at Wanaque, N. J___ . 167-168

Ware River at Gibbs Crossing, Mass.- - 99-100discharge measurement of __ 269

Waterville, Me., Kennebec River at. 35-36 Wendell Depot, Mass., Moss Brook at. 95-97 West Berne, N. Y., Fox Creek at..... 146-146 West Brimfleld, Mass., Quaboag River at. 102-103 West Buxton, Me., Saco River at 47-48 West Canada Creek at Hinckley, N. Y.... 141-142

at Kast Bridge, N. Y.................. 142-144West Enfleld, Me., Penobscot River at. 18-19 West Hartford, Vt., White River at......... 78-79West Ware, Mass., Swift River at_ , 100-102 Westfield River at Knightville, Mass 103-105

Middle Branch of, at Goss Heights,Mass-...... . .. . 107-108

near Westfield, Mass Wfr-108 Whippany River at Morristown, N. J J60rl61 White River at West Hartford, Vt- 78-79 White River Junction, Vt., Connecticut River

at................ ............ 74-76Winchendon, Mass., Millers River near 88-59

Priest Brook near.._... 92-94Sip Pond Brook near____ 91-92

Worcester, Mass., Blaekstone River at.. 66-67 Work, authorization of 1

division of. » 11scope of. 1-2

York River Basin, Va., gaging-station record in...........................

Zero flow, point of, definition of-

o