flood profiles in the umpqua river basin,'oregon part 2

FLOOD PROFILES IN THE UMPQUA RIVER BASIN,' OREGON

PART 2

r

part 2.

Umpqua River, Scottsburg toHubbard Creek

North Umpqua River, Winchesterto Idleyld

UNITED STATESDEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

FLOOD PROFILES IN

THE UMPQUA RIVER BASIN, OREGON

By Eugene A. Oster

Prepared in cooperation withDOUGLAS COUNTY

OPEN-FILE REPORT... 1973Portland, Oregon

CONTENTS

Page

Introduction i

Description of the study reaches 2

Floods in the Umpqua River basin 4

Study methods 6

Photogrammetric mapping 6

Collection of field data 7

Roughness coefficients 7

Step-backwater analysis 8

Results of the study 8

Umpqua River 9

North Umpqua River 11

Use of the results 13

Summary 13

Revisions to part 1 profiles 13

References 14

ILLUSTRATIONS

Page

Figure 1. Map showing location of study area 3

Stage hydrograph of Umpqua River near Elkton, flood

of December 1964 5

Flood-frequency curves for selected gaging stations 6

Stage-discharge relation, Umpqua River near Elkton 10

Stage-discharge relation, North Umpqua River at rail-

road bridge at Winchester 11

Stage-discharge relation, North Umpqua River near

Glide 12

7 to 37. Graphs showing water-surface profiles 35-65

38 to 85. Cross sections 66-113

11

ill

TABLES

Page

Table 1. Annual peaks for Umpqua River near Elkton, Oreg.

(gaging station 3210) 16

Annual peaks for North Umpqua River at Winchester,

Oreg. (gaging station 3195) 17

Annual peaks for North Umpqua River near Glide, Oreg.

(gaging station 3185) 18

Discharges used to develop the flood profiles 19

Profile elevations for Umpqua River 20

Profile elevations for North Umpqua River, Winchester

to Idleyld Park 26

Revised profile elevations for South Umpqua River 29

Revised profile elevations for North Umpqua River,

mouth to Winchester Dam 34

FLOOD PROFILES IN THE UMPQUA RIVER BASIN, OREGON

Part 2

By Eugene A. Oster

INTRODUCTION

The elevations and characteristics of floods are major factors thatinfluence land-use planning of the flood plains of any stream. As thelowlands become more intensively used, it becomes increasingly importantto have a firm basis for assessing the risk of flood damage. Land-usezoning is not only a legal requirement passed by the Oregon State Legis-lature in 1969; it is necessary to ensure a use compatible with the riskof flood damage. The approximate areas flooded in 1955 and 1964 in theUmpqua River basin upstream from Coles Valley are shown in an interimreport (Corps of Engineers, 1966). However, there are no publishedflood-elevation profiles. Such profiles are needed to delineate areasinundated by floods of a specific recurrence interval and to establishland-use zone boundaries.

This study was made at the request of Douglas County to developprofiles for the 10-, 25-, 100-, and 500-year floods and the December1964 flood. This report is the second in a series of three reports thatwill cover approximately 300 miles of Umpqua River basin streams. Al-though the three reports are intended as a series, some introductory andexplanatory material is repeated in each, so that each report can standindependently.

The reaches covered by this report are: Umpqua River from Scotts-burg upstream to Hubbard Creek, and North Umpqua River from WinchesterDam upstream to Idleyld Park.

The reaches covered by flood profiles in the Umpqua River basin,part 1 (Oster, 1972), are: Umpqua River above Hubbard Creek, NorthUmpqua River below Winchester Dam, and South Umpqua River and parts ofselected tributaries below Days Creek.

A profile of the Umpqua River was computed for the 100-year floodadjusted for storage in the proposed Days Creek Lake on the South Umpqua

River above Days Creek. Profile elevations were also computed for the

2-year and 50-year floods and are available for inspection in the Oregon

District office of the U.S. Geological Survey.

The step-backwater method was used to compute high-water profiles;

photogrammetric maps and water-depth soundings were used to determine

the low-water and thaiweg profiles. The theory of the step-backwater

method is described in detail in U.S. Geological Survey Water-Supply

Paper 1869-A (Bailey and Ray, 1966) and in many textbooks on hydraulics.

The method uses hydraulic equations expressed as functions of channel

geometry, roughness, and slope.

This report presents the data needed to determine areas subject to

inundation by the selected floods. Flooded areas can be determined by

transferring the flood-profile elevations and the flooded width shown

on the cross sections to the orthophoto work maps.

This study was made in cooperation with Douglas County, under the

general supervision of Stanley F. Kapustka, Oregon district chief of the

Water Resources Division of the U.S. Geological Survey, and under the

direct supervision of David D. Harris, chief of the Hydrologic Investi-

gations Section.

Many thanks are due to Berl Oar, of Douglas County Water Resources

Survey, whose help in locating many high-water marks and bench marks

greatly expedited the collection of field data. Douglas County also

furnished stage readings obtained by the National Weather Service on the

North Umpqua River at Winchester Dam. These readings were of great

value in developing a stage-discharge relation to begin the step-

backwater computations, and are much appreciated.

Several people on the district staff of the U.S. Geological Survey

contributed much patient work, without which the presentation of this

report would have been impossible. Those deserving special recognition

and praise are Antonius Laenen for his help with computer processing of

the data; Alexander Gonsalves, who prepared the illustrations; and Nyra

Johnson, who typed and edited the manuscript.

DESCRIPTION OF THE STUDY REACHES

The study reach on the Umpqua River begins at the highway bridge in

Scottsburg and extends 71 miles upstream to the mouth of Hubbard Creek

(fig. 1). The river is deeply entrenched, and the valley plains arenarrow, ranging from a few hundred feet to about half a mile wide.

Except for the towns of Elkton and Scottsburg, the reach is sparsely

populated. The arable flood-plain lands are used for hay meadows and

orchards. The upland hills are densely covered with conifer forest.Average channel slope ranges from 3 to 5 feet per mile.

The study reach on the North Umpqua River begins at Winchester Dam

and extends 27 miles upstream to Idleyld Park (fig. 1). The river is

deeply entrenched and flows through canyons that connect valleys whose

flood plains are generally less than a quarter of a mile wide. Channel

slope averages 11 feet per mile. The upland hills from Winchester to

Glide are grass covered, with scattered stands of deciduous trees. Up-

stream from Glide the grasslands and oak thickets merge into conifer

forest. In the valleys near Glide there are small orchards and culti-

vated hay meadows.

FLOODS IN THE UMPQUA RIVER BASIN

The highest annual flows in the Umpqua River 1?asin usually occur

from November through March as a result of heavy winter rains augmented

by snowmelt. Annual peak flows for gaging stations on the Umpqua andNorth Umpqua Rivers are shown in tables 1 to 3. At the gaging station

near Elkton, the flood of December 1964 reached a stage 6.5 feet higher

than the historic flood of 1861, which was equaled by the flood of

December 1955. On the North Umpqua River the flood of 1964 was thehighest since at least 1906, as shown by streainflow records at several

sites from near the mouth to above Idleyld Park.

A stage hydrograph of the December 1964 flood at the gaging stationnear Elkton is shown in figure 2. Because the recording instrumentswere submerged a few hours before the peak, the recession of the flood

is estimated by comparison to the gage record for South Umpqua River

near Brockway.

Steel bridge girders found in the Umpqua River 4½ miles downstreamfrom Elkton bear mute testimony to the destructive power of floods. The

county road department reports (oral commun., July 17, 1973) that these

girders were lost during reconstruction of the Beckley Bridge in Elktonduring 1927 and were carried a quarter of a mile downstream by the flood

of 1927. Succeeding floods moved them farther downstream. Several

bridges in the Umpqua River basin were severely damaged or destroyedduring the flood of December 1964.

Flood-frequency curves for the gaging stations on the Uinpqua andNorth Umpqua Rivers are shown in figure 3. The curves were developedfrom annual peak-flow data using the log-Pearson type III method. The

recurrence interval, in years, is the average period in which a given

event might be equaled or exceeded. It should not be construed to imply

any regularity of occurrence. The recurrence interval can be taken as a

reciprocal of the probability of occurrence. A 10-year flood would have

one chance in 10, or a 10 percent chance, of occurring in any year. A100-year flood has one chance in 100, or a 1 percent chance, of occurring

in any year. As drawn, the frequency curves are shown as a solid lineto twice the period of record and are extended as a dashed line to esti-

mate higher floods up to the 500-year flood.

4

r

0

Figure 1. --Location of study area.

122 120

INDEX MAP OF OREGON

EXPLANATION

Stream-gaging station S3630

12122 120

130

u:l

-Pc- Elevation of terrace

140

Bankfull stage(at gage)

II

\

Recording instruments submerged byflood 1 a.m. December 23. Peakelevation determined from floodmark;recession estimated by comparisonwith South Umpqua River near Brockwayand once-daily staff-gage readingsafter December 27

20 22 24 26 28DAY, DECEMBER 1964

100

Figure 2. --Stage hydrograph of Umpqua River near Elkton(station 3210), flood of December 1964.

200

6

-

-

teSt....__

(9 5 - -

, -

500z00C!)

cz;i

H

0H

0

abo.Je

it0 -_---

-

iq 20 50 100 200 500

RECURRENCE INTERVAL, IN YEARS

Figure 3. --Flood-frequency curves for selected gaging stations.

Discharges used to develop the flood profiles are shown in table 4.

On the Umpqua River, discharges upstream and downstream from the gaging

station were determined in proportion to drainage area. On the North

Umpqua River, streamflow records for Little River and Rock Creek near

Glide were used together with drainage area to determine flood dis-

charges along the study reach.

Streamf low records'of the North Umpqua River were extended by cor-relation to records of Umpqua River near Elkton (3210) to provide alonger time base for the frequency analysis. The resulting frequency

curve was significantly lower than the curve based on the period of

record alone. It was considered well to recompute the profiles in thereach of the North Umpqua River below Winchester Dam; the recomputed

profiles will supersede those published in part 1 of this series.

STUDY METHODS

Photogrammetric Mapping

Channel-geometry data required for the step-backwater analysis werefurnished by a commercial photogrammetry firm. They produced orthophoto

work maps (scale 1 in. = 400 ft) from aerial photographs, with

7

horizontal and vertical map control established to third-order accuracyat primary picture ground-control points. An orthophoto map is anaerial photo mosaic completely corrected for scale and distortion, andis as accurate as a plotted map. The orthophoto map shows all thedetail visible on the photograph and includes much detail that would beomitted from a plotted map. Spot elevations, 5-foot ground contours,cross-section locations, and lettering were added. All elevations aregiven in feet above mean sea level.

Cross sections were positioned perpendicular to the direction offlow in the channel and., where necessary, were angled to be perpendic-ular to the flow across the flood plain. Cross-section ground eleva-tions were determined at 100-foot intervals and at topographic breaksacross the flood plain. Accuracy of cross-section elevations was to bewithin ±1 foot for 90 percent of the points where ground surface wasvisible in the aerial photographs. Contour accuracy was to be withinhalf a contour interval for 90 percent of the area mapped where theground surface was not obscured by vegetative cover.

The originals of the orthophoto work maps, not intended for publi-cation, are available for inspection in the office of the Douglas CountyPlanning Department.

Collection of Field Data

Cross-section locations were selected in the field, and water-depthsoundings were made prior to the photogrammetric mapping. To completeeach channel cross section, the sounded water depths were later added tothe photogrammetric ground elevations. Cross sections were spaced about1,000-1,200 feet apart, on the average, and at principal breaks in thechannel gradient. A few additional cross sections were scaled from thephoto map after the fieldwork had been completed. The bridges in theproject reach were examined in the field and, based on past experience,judged to have little or no constricting effect on floodflows.

The elevations of documented high-water marks were determined byleveling to nearby bench marks and were used to verify the accuracy ofthe computed profiles.

Roughness Coefficients

Channel roughness coefficients required in the hydraulic compu-tations were selected in the field for subreaches through each crosssection. Verbal description of bed material and color-slide photographsof the channel were used to aid in office review of the coefficientsselected. The aerial photographs were used to assist in selectingroughness coefficients for the flood plain.

Step -Backwater Analysis

A digital computer was used to make the large number of calcula-tions required in the step-backwater process. The profiles are devel-oped by beginning at the farthest downstream cross section with a knownor computed stage-discharge relation and progressively computing profileelevations upstream from cross section to cross section.

On the Umpqua River, step-backwater computations were started atScottsburg, using an estimated stage-discharge relation based on high-water marks of the December 1955, December 1964, and January 1971floods, and a low-water elevation.

Between cross sections 12 and 13 the step-backwater computationswere adjusted to match the stage-discharge relation curve for UmpquaRiver near Scottsburg (3229). This curve was defined by current meterto 53,000 cfs and extended on the basis of high-water-mark elevationsand the shape of the step-backwater curve. The discharge of theDecember 1964 flood was computed on the basis of drainage area and unitrunoff below Umpqua River near Elkton (3210).

At cross section 134, the stage-discharge relation for gagingstation 3210 was used to continue the step-backwater computations up-stream. That stage-discharge relation was defined by current meter to200,000 cfs and a slope-area determination of discharge at 208,000 cfs.

On the North Umpqua River at Glide, step-backwater computationswere broken and restarted from an estimated stage-discharge relationabove the mouth of the Little River. A very large rock outcrop in thechannel and the flow of the Little River colliding head on with theNorth Umpqua River (see fig. 35) cause considerable pileup of water atthis location. A relation was estimated based on a high-water mark anda low-water elevation. Step-backwater computations were continued up-stream, starting from the estimated relation.

RESULTS OF THE STUDY

Profile elevations for the selected flows are shown in tables 5 and6. The distances shown were measured along the stream channel by thephotogrammetry contractor.

The computed profiles, together with maps of the area, are shown infigures 7 to 37. The profiles can be related to the adjacent maps forlocation of cross sections. The stream boundaries shown on the maps andthe low-water elevations shown on the profiles are for the days ofaerial photography, Nay 27, 1972, on the North Umpqua River and May 30,1972, on the Umpqua River. The late summer flows of August and Septem-ber can be expected to be 2-3 feet lower. Plots of the cross sectionsare shown in figures 38 to 85.

On the Umpqua River, a profile was computed for the 100-year floodadjusted for storage in the proposed Days Creek Lake on the South Umpqua

River. The adjusted discharge was furnished by N. C. Hosea, Corps ofEngineers (oral commun., November 11, 1971), for the gaging station nearElkton and was extrapolated upstream and downstream on a drainage-arearatio. Elevations along this profile are listed in table 5.

Umpqua River

The step-backwater computations were started at the Scottsburgbridge from an estimated stage-discharge relation based on high-watermarks. From cross section 3 to 11 it was necessary to adjust the step-backwater computations to a profile defined by high-water marks. Localresidents report that extreme high tide affects river stages upstream tocross section 8.

The gaging station Umpqua River near Scottsburg (3229) was locatedon the right bank (facing downstream) between cross sections 12 and 13.The step-backwater profiles were adjusted to an estimated extension ofthe stage-discharge relation, which was defined by current meter to53,000 cfs. Two high-water marks on the right bank and one approximatehigh-water mark on the left bank, pointed out by residents, show 3 to3.5 feet of lateral slope from the right bank to the left bank. Theprofiles shown are the average of this lateral slope. From crosssection 13 to 30, the computed profile agrees very well with known high-water marks.

From cross section 33 to 92 the computed profiles were adjusted toagree more closely to a profile based on high-water marks. At sec'tions94 and 96, the computed profile agrees well with known high-water marks.

At cross section 96, in Elkton above the mouth of Elk Creek, threehigh-water marks on the right bank and one on the left bank show 2.4feet of lateral slope from right to left. The pileup is on the rightbank, on the outside of a sharp curve, where Elk Creek water would in-fluence the stage of the river. Another high-water mark, across ElkCreek, 1.4 feet lower in elevation, may reflect an eddy current. Stillanother high-water mark, on the left, at the outer edge of the floodplain, is 0.7 foot lower than the high-water mark on the left bank ofthe main channel. The 'computed elevation is 0.5 foot lower than thethree right-bank high-water marks and 0.7 foot higher than the averageof left bank and right bank marks.

Between cross sections 96 and 134, one high-water mark was found,at section 117, about 2 feet higher than the computed elevation. Thismark is at the edge of a flood plain 2,000 feet wide and may not trulyrepresent water surface at the channel. Because marks defining highwater are inadequate in this area, the profiles are accepted as com-puted.

At gaging station Umpqua River near Elkton (3210), at cross section134, the stage-discharge relation is defined by current meter to 200,000cfs and by a slope-area determination of discharge at 208,000 cfs. Thestep-backwater computations agree very well with this relation (fig. 4)

ç,44

a

C,'

I150

10

Terrace --Bankfull

0120 C.:

zHçe

10020,000 100,000 500,000

DISCHARGE, IN CUBIC FEET PER SECOND

Figure 4.--Stage-discharge relation, Umpqua River near Elkton

(station 3210).

within the limits of its definition. Computations were continued up-

stream using the relation defined by current meter.

Cross sections 136 to 177 lie in an isolated, uninhabited canyon.

No high-water marks were found. From cross section 167 to 186, the com-

puted profiles were adjusted to agree with a water stain on a building

at cross section 178. The computed profile agrees very well with a

mark at cross section 188. From cross section 191 to 206 the computed

profiles were adjusted to a profile based on marks at cross sections

192, 199, and 202.

From cross section 207 to 236, high-water-mark data were inadequate

to define a profile. The computed profiles from cross section 237 to

268 agree with known high-water marks.

At cross sections 296 and 297 there is a disagreement of several

feet between three high-water marks--two of them spikes set by other

agencies and the other an approximate location pointed out by a resi-

dent. The computed profile agrees very well with the approximate loca-

tion and splits the difference of the other two. The profile was

allowed to stand as computed.

From cross section 298 to 333, the end of the project reach, high-

water marks are sparse and inadequate. The computed profile agrees well

with a mark at cross section 314.

440

430

C,

At cross section 333 the computed profiles are 2 to 2.5 feet higherthan the estimated stage-discharge relation that was used to start thecomputations of part 1 of this series. Computations were continued up-stream to the lower end of Coles Valley; the profiles merged well atcross section 4 of part 1 and are presented as an addition to table 5 ofthis report, superseding the elevations published in part 1.

North Umpqua River

On the pier of the railroad bridge at Winchester there is an oldstaff gage that was used prior to 1930. The stage-discharge relationfor this gage was defined by current meter to 40,000 cfs and extendedlogarithmically to bankfull. The channel bottom is rough bedrock, withno possibility of scour. The step-backwater computations of 1973 agreevery well with this old relation below bankfull (fig. 5).

460

H

422

10,000 100,000


Figure 5. --Stage-discharge relation, North Umpqua River at railroad bridgeat Winchester (station 3195).

Bankfull

11

688

E- 1 ---_

C

The staff gages for gaging station North Umpqua River near Glide(3185), 1 mile below Glide, are still standing and in good condition.The stage-discharge relation for this gage was defined by current meterto 40,000 cfs and extended logarithmically to bankfull. The channelbottom is rough bedrock, with no possibility of scour. The step-backwater computations of 1973 agree very well with this old relationbelow bankfull (fig. 6).

Cl)

an1fu 1

668

F'

658H

C,',

2oH

653r 10,000 100,000


Figure 6. --Stage-discharge relation, North Umpqua Rivernear Glide (station 3185).

High-water-mark information is totally lacking or inadequate forlong reaches of the North Umpqua River below cross section 95. Fromcross section 95 to 125 the step-backwater checks the available high-water marks quite well. Above cross section 118, above Lone Rockbridge, all floods are well confined within high banks

At cross section 118, on the left bank (facing downstream) aboveLone Rock bridge, high-water marks of the December 1964 flood andJanuary 1971 flood are 3.2 feet and 1.5 feet higher than the computedelevations. This is an area where floodwater would pile up on the leftbank while making a sharp bend to the right to pass through the bridgeopening. Three feet of pileup is consistent with experience elsewhereand is quite credible.

12

USE OF THE RESULTS

Elevations from the computed profiles (figs. 7-37) can be used inconjunction with the plotted cross sections (figs. 38-85) to determinethe width of he area subject to flooding. This width can be trans-ferred to a suitable topographic map to determine the area inundated byeach flood. If the contour interval of the map is sufficiently small,the flood-profile elevations can be plotted directly on the map to de-termine the inundated area. The plotted cross sections can also be usedto determine the stage at which overbank flow occurs and where watermight be ponded in low areas of the flood plain.

The 500-year flood profiles should be considered as estimatesbecause of the comparatively short period of streamflow record on whichthe frequency analysis was based.

The step-backwater method of computation assumes a level watersurface across the width of the river. Sharp channel curvature or astrong tributary inflow can superelevate the water surface by severalfeet from bank to bank. In using the results of this study, allowanceshould be made for this superelevation and for backwater in areas vul-nerable to catching debris. It should also be recognized that overbankflow can become separated from the main channel and continue at a higherelevation on the flood plain than in the main channel. Such conditionsare extremely difficult to simulate.

The computed profiles are based on channel conditions at the timeof the survey. Debris jams during a flood can cause varying amounts ofbackwater that are impossible to predict. Future channel changes orconstriction of the flood plain could also change flood elevations inthe affected reach.

SUNMRY

Flood elevations for the selected reaches of the Umpqua River basinare presented in graphic and tabular form. To give a concept of rangein stage, a low-water profile is included. The profiles presented arein reasonably good agreement with documented high-water marks and stage-discharge relations defined by current meter.

REVISIONS TO PART I PROFILES

A revision of the stage-discharge relation for gaging station SouthUmpqua River near Brockway (3120) requires the published peak dischargeof the December 1964 flood to be revised from 105,000 cfs to 125,000cfs. This revision was based on information generated by, and compiledafter, the publication of part 1 of this series. On the basis of thisrevision, it was necessary to recompute the profile of the December 1964flood from near the mouth to near Tn-City. This revised profile(table 7) supersedes the one published in part 1 of this series. Theflood-insurance study made in 1973 for Winston included a recom-putation of the step-backwater from the gaging station near Brockway.

13

Because of the revision of the stage-discharge relation at the gage andthe recomputation of the bridge constriction and road overflow at crosssections 109 and 127, the several profiles were revised from crosssection 107 to 136. The frequency analysis was reexamined in light ofthe new data and found to be changed less than 1 percent. The corres-ponding profiles are unchanged except as noted above.

On the North Umpqua River, step-backwater computations past theold gaging stations near Glide and at Winchester check the old stage-discharge relations very well. High-water marks found near each ofthese old gages shown the published figure of discharge for the December1964 flood to be in error. The 1964 flood discharge at Winchester wasrevised from 119,000 cfs to 150,000 cfs. This revised discharge wasused in a revision of the frequency analysis mentioned on page 6. This

revision also required a revision of the stage-discharge relation abovebankfull at gaging station North Umpqua River at Winchester (3195).Because of the revisions it was considered necessary to recompute theprofiles in the reach of the North Umpqua River below Winchester Dam.Those recomputed profiles (table 8) supersede those published in part 1of this series of reports.

REFERENCES

Bailey, J. F., and Ray, H. A., 1966, Definition of stage-discharge re-lation in natural channels by step-backwater analysis: U.S. Geol.Survey Water-Supply Paper 1869-A, 24 p.

Oster, E. A., 1972, Flood profiles in the Umpqua River basin, Oregon,part 1: U.S. Geol. Survey open-file rept., 119 p.

U.S. Army Corps of Engineers, 1966, Flood plain information, DouglasCounty, Oregon: U.S. Army Corps Engineers interim rept., 35 p.

14

15

(station 3210)

ElevationWater (in feet Discharge

year Date above msl) (in cfs)

Site near downstream side of Smith Bridge

1862 Dec. 1861 137.1 218,000

1906 Jan. 17, 1906 111.4 61,400

1908 Dec. 26, 1907 122.0 106,000

1909 Jan. 20, 1909 120.0 97,200

1910 Nov. 23, 1909 131.0 144,000

1911 Nov. 29, 1910 118.5 94,300

1912 Jan. 13, 1912 121.5 109,000

1913 Jan. 18, 1913 114.5 75,800

1914 Jan. 26, 1914 112.5 67,000

1915 Feb. 3, 1915 104.5 33,100

1916 Feb. 7, 1916 122.5 116,000

1917 Mar. 25, 1917 106.3 40,300

1918 Jan. 13, 1918 112.5 67,000

1919 Jan. 19, 1919 117.5 91,000

1920 Dec. 9, 1919 109.5 53,500

1921 Dec. 30, 1920 115.5 81,000

1922 Nov. 30, 1921 114.5 76,000

1923 Jan. 6, 1923 118.5 96,0001924 Dec. 7, 1923 106.0 39,100

1925 Dec. 30, 1924 122.5 116,000

1926 Feb. 5, 1926 112.5 67,000

1927 Feb. 21, 1927 132.5 185,000

1928 Mar. 27, 1928 112.5 67,000

1929 Apr. 15, 1929 107,7 45,400

1930 Dec. 20, 1929 111.5 62,000

1931 Apr. 1, 1931 109,0 51,000

1932 Mar. 19, 1932 120.3 104,000

1933 Jan. 3, 1933 119.6 101,000

1934 Jan. 24, 1934 109.7 53,200

1935 Dec. 20, 1934 114.7 76,600

1936 Jan. 13, 1936 121.6 111,000

1937 Apr. 14, 1937 118.2 94,000

1938 Feb. 7, 1938 122.6 119,000

1939 Mar. 13, 1939 110.6 57,300

1940 Feb. 29, 1940 116.1 83,500

Table 1. --Annual 'eaks for Urn ua River near Elkton Ore:.

Table 1. --Annual peaks for Umpqua River near Elkton, Oreg.(stat ion 3210) --Continued

16

Wateryear Date

Elevation(in feet Discharge

above msl) (in cfs)

1941 Dec. 27, 1940 113.4 70,400

1942 Dec. 19, 1941 114.2 74,200

1943 Dec. 31, 1942 132.7 186,0001944 Nov. 5, 1943 109.6 52,000

1945 Feb. 14, 1945 114.7 76,500

1946 Dec. 29, 1945 131.7 179,000

1947 Dec. 14, 1946 114,2 74,000

1948 Jan. 7, 1948 129.4 154,000

1949 Dec. 12, 1948 121.1 109,000

1950 Jan. 22, 1950 114.9 78,000

1951 Oct. 30, 1950 135.8 208,000

1952 Feb. 2, 1952 113.9 72,500

1953 Jan. 19, 1953 134.6 199,000

1954 Nov. 23, 1953 134.0 195,000

1955 Dec. 31, 1954 111.4 60,400

1956 Dec. 22, 1955 137.2 218,000

Site 1,800 feet downstream from Smith Bridge

1957 Dec. 12, 1956 123.4 131,000

1958 Dec. 21, 1957 123.4 131,000

1959 Jan. 12, 1959 117,2 95,200

1960 Feb. 9, 1960 116.6 91,700

1961 Feb. 11, 1961 121.4 119,000

1962 Nov. 23, 1961 130.5 176,000

1963 Dec. 3, 1962 116.5 91,300

1964 Jan. 20, 1964 124.6 138,000

1965 Dec. 23, 1964 142.4 265,000

1966 Jan. 4, 1966 123.8 133,000

1967 Jan. 28, 1967 114.9 82,600

1968 Feb. 23, 1968 114.0 78,3001969 Jan. 13, 1969 115.4 85,300

1970 Dec. 21, 1969 120.4 113,000

1971 Jan. 18, 1971 134,0 201,000

1972 Mar. 3, 1972 127.8 158,000

Wateryear Date msl) ( )

Table 2. --Annual peaks for North Umpqua River at Winchester,Oreg. (station 3195)

Elevation(in feet Discharge

above in cfs

Site at Southern Pacific Railroad bridge at Winchester,river mile 6.8

Site 400 feet downstream from county bridge, at rivermile 1.8

1/ Not previously published.2/ Revised.

17

1954 Nov. 23, 1953 401.4 89,0001955 Dec. 31, 1954 388.0 38,1001956 Dec. 22, 1955 402.1 92,5001957 Dec. 11, 1956 397.3 75,4001958 Dec. 21, 1957 393.1 58,600

1959 Jan. 27, 1959 386.8 34,0001960 Feb. 8, 1960 385.7 30,0001961 Nov. 25, 1960 390.1 46,6001962 Nov. 23, 1961 397.7 76,8001963 Dec. 2, 1962 388.7 40,800

1964 Jan. 20, 1964 391.2 50,8001965 Dec. 22, 1964 407.2 V150,0001966 Jan. 6, 1966 392.5 56,2001967 Jan. 28, 1967 387.4 35,8001968 Feb. 23, 1968 388.6 40,500

1969 Nov. 9, 1968 387.0 34,0001970 Dec. 21, 1969 390.5 48,2001971 Jan. 18, 1971 399.4 84,3001972 Mar. 3, 1972 397.0 73,900

1909 Jan. 21, 1909 430.6 32,4001910 Nov. 23, 1909 445.4 100,0001911 Nov. 28, 1910 432.8 41,0001912 Jan. 12, 1912 437.3 60,5001913 Mar. 30, 1913 430.0 30,100

1924 Dec. 29, 1923 20,2001925 Dec. 30, 1924 433.4 42,8001926 Feb. 4, 1926 428.3 23,3001927 Feb. 20, 1927 442.3 78,2001928 Mar. 11, 1928 431.8 36,100

1929 Mar. 21, 1929 429.1 25,9001/1951 Oct. 29, 1950 441.3 88,000

Table 3. --Annual peaks for North IJmpqua River near Glide,

Oreg. (station 3185)

1/ Not previously published.

18

Wateryear Date

El evat ion

'(in feet

above msl)Discharge(in cfs)

1910 Nov. 22, 1909 671.1 94,000

1916 Nov. 25, 1915 661.9 42,000

1917 Apr. 11, 1917 656.5 18,100

1918 Jan. 12, 1918 662.0 42,5001919 Jan. 17, 1919 658.5 26,100

1920 Nov. 3, 1919 659.9 32,400

1922 Nov. 21, 1921 662.9 50,000

1928 Mar. 11, 1928 660.3 35,2001929 Apr. 14, 1929 657.9 24,300

1930 Dec. 19, 1929 658.3 26,100

1931 Apr. 1, 1931 660.0 33,800

1932 Mar. 19, 1932 665.2 59,500

1933 Jan. 2, 1933 658.9 28,400

1934 Jan. 23, 1934 658.5 27,000

1935 Dec. 20, 1934 661.2 39,500

1936 Jan, 4, 1936 661.3 40,000

1937 Apr. 14, 1937 662,2 44,5001938 Jan, 22, 1938 661.4 40,500

1951 Oct. 29, 1950 668.3 80,000

1956 Dec. 22, 1955 669.6 90,000

111965 Dec. 22, 1964 674.4 138,000

19

Table 4.--Discharges used to develop the flood profiles

Discharge, in cubic feet per second

1/ Number following station name is the gaging station number.

Gaging11station

10-yearflood

25-yearflood

100-yearflood

500-yearflood

December1964

flood

North TJmpqua Riverabove Rock Creek,near Glide (3175) 48,900 61,200 81,000 105,000

North Umpqua Rivernear Glide (3185) 72,000 94,400 135,000 191,000 138,000

North Umpqua Riverat Winchester(3195) 76,900 100,000 142,000 200,000 150,000

Umpqua River nearElkton (3210) 175,000 220,000 294,000 385,000 265,000

11.7

Table 5. --Profile elevations for the Iimpqua River above Scottsbur

Distance up- Elevation, in feet above mean sea levelstream fromScottsburg 100-year December

Cross bridge flood 1964 500-year 100-year 25-year 10-year Low2/

section (feet) (adjusted)- flood flood flood flood flood water Thalweg-

Footnotes at end of table.

20

1 220 35.2 40.8 52.1 42.4 33.2 27.2 0.8 -12.72 1,215 35.5 41.0 52.4 42.7 33.6 27.6 1.2 -17.23 2,675 36.3 42.2 52.9 43.9 34.3 28.4 1.7 -10.24 3,535 37.0 43.0 53.5 44.7 35.0 29.0 2.7 -7.25 4,470 37.4 43.9 54.2 45.5 35.4 29.6 3.8 -9.6

6 5,715 38.3 45.0 55.5 46.7 36.4 30.5 4.8 -17.07 7,480 40.1 46.8 57.8 48.2 38.3 32.5 6.5 -7.08 8,600 41.4 47.9 59.2 49.4 39.6 33.9 8.4 -13.09 9,690 42.0 49.0 60.9 50.8 40.2 34.7 9.0 -1.4

10 10,510 43.9 50.0 62.0 51.9 42.1 36.7 9.6 -25.0

11 11,655 45.2 51.0 63.6 53.1 42.8 37.3 10.0 -2.212 12,630 46.7 52.4 65.2 54.6 44.6 38.9 11.8 5.4

Gaging sta-tion 3229 13,350

Wells Creek 13,700

13 13,995 48.9 54.6 67.8 56.9 46.8 41.1 13.0 -5.414 15,515 49.9 55.7 68.6 57.9 47.8 42.0 13.5 0.615 16,535 50.3 56.0 68.8 58.2 48.2 42.4 14.2 1.816 17,915 51.0 56.5 69.0 58.6 49.0 43.3 15.2 -6.717 19,250 51.2 56.7 69.2 58.8 49.2 43.5 15.8 8.4

18 20,500 53.1 58.5 70.5 60.6 51.2 45.5 16.6 5.2

19 21,660 54.0 59.2 70.8 61.1 52.0 46.4 16.5 -4.520 22,820 54.4 59.6 71.0 61.5 52.5 46.9 16.6 -6.821 24,125 55.0 60.1 71.3 62.0 53.0 47.5 16.8 -10.822 25,232 55.6 60.7 71.8 62.5 53.7 48.2 16.9 -.9

23 26,232 56.5 61.5 72.5 63.4 54.6 49.0 17.0 -.524 27,297 57.0 62.0 72.9 63.8 55.2 49.6 17.1 6.4

BurchardCreek 27,60025 28,387 58.0 62.8 73.6 64.6 56.0 50.6 17.2 8.0

26 29,450 58.8 63.5 74.2 65.3 56.8 51.4 17.3 5.527 30,607 59.1 63.8 74.3 65.5 57.2 51.8 17.4 9.528 31,587 59.7 64.3 74.8 66.0 57.8 52.5 17.4 4.429 32,150 60.0 64.4 74.8 66.1 58.0 52.7 18.4 6.530 33,063 60.7 65.2 75.7 67.0 58.7 53.4 18.8 7.0

WeatherlyCreek 33,55031 34,320 61.7 66.0 76.2 67.8 59.8 54.5 19.1 8.732 35,235 62.2 66.4 76.4 68.2 60.3 55.0 19.4 9.533 36,338 63.0 67.0 76.8 68.7 61.2 55.8 20.2 9.3

34 37,543 63.6 67.9 77.3 69.4 61.8 56.4 20.6Lutsinger

Creek 38,33035 39,433 64.1 68.4 77.7 69.8 62.4 57,0 21.6 15.636 40,678 64.9 69.1 78.2 70.4 63.1 57.8 2L8 13.3

37 41,658 65.6 69.7 78.6 71.0 63.8 58.5 22.0 12.038 42,883 66.3 70.3 79.1 71.6 64.5 59.2 22.2 10.039 44,013 67.0 71.3 79.6 72.2 65.4 60.0 22.4 7.840 45,138 67.5 71.7 79.8 72.7 65.8 60.6 22.6 17.041 46,213 68.0 72.2 80.1 73.1 66.3 61.1 22.8 5.7

42 47,263 68.7 72.8 80.8 73.8 67.0 61.8 24.2 18.243 48,403 69.0 73.3 81.3 74.3 67.4 62.2 25.2 17.744 49,490 69.6 74.0 81.9 75.0 67.9 62.8 25.9 18.045 50,343 70.2 74.8 82.8 75.7 68.7 63.5 26.2 13.046 51,330 70.5 75.1 83.1 76.1 69.0 63.8 26.6 22.0

47 52,195 71.2 75.6 83.4 76.5 69.6 64.4 28.2 24.648 53,355 71.6 76.0 83.8 76.9 70.0 64.8 32.2 20.049 54,305 71.8 76.2 84.0 77.1 70.3 65.0 38.4 31.050 55,280 72.8 77.2 84.6 78.1 71.3 66.2 38.7 27.7

51 56,305 73.4 77.6 85.3 78.7 71.9 67.0 42.2 22.0

52 57,545 74.2 78.3 86.0 79.4 72.7 67.9 42.4 30.053 58,605 74.9 78.9 86.8 80.1 73.5 68.7 43.2 38.754 59,745 76.4 80.2 88.0 81.6 75.0 70.3 43.8 27.355 60,995 77.3 81.0 88.9 82.5 75.9 71.2 44.0 29.056 61,895 78.3 81.6 90.0 83.5 77.0 72.2 44.2 32.7


Table 5. --Profile elevations for the Umpqua River above Scottsburg--Continued

21

Distance up-stream fromScottsburg

Cross bridgesection (feet)

100-yearflood

(adjusted)1'

December1964

flood

Elevation, in feet above mean sea level

500-year 100-year 25-year 10-yearflood flood flood flood

Lowwater Thaiwesa

57 62,722 79.1 82.2 90.7 84.3 77.7 73.0 45.3 35.0Paradise

Creek 62,87058 64,017 80.1 83.4 91.3 85.3 78.8 74.1 45.8 24.059 65,452 81.5 84.6 92.4 86.5 80.2 75.5 46.5 34.0

60 66,875 83.5 86.0 94.0 88.5 82.2 77.3 47.1 40.561 68,155 84.9 87.1 94.7 89.5 83.6 78.7 47.3 30.062 69,392 85.6 88.2 95.3 90.2 84.3 79.4 47.6 30.063 70,715 86.5 89.4 96.3 91.1 85.1 80.3 48.2 31.764 72,125 87.7 90.7 97.2 92.1 86.3 81.4 48.8 42.8

65 73,535 89.4 92.0 99.0 93.9 88.0 83.0 49.3 45.066 75,175 90.1 93.0 99.7 94.5 88.7 83.7 50.1 45.367 76,210 91.0 94.2 100.2 95.3 89.5 84.2 51.4 45.368 77,595 92.1 95.5 101.5 96.4 90.6 85.3 54.0 48.0

Sawyer Creek 78,340

69 79,160 93.2 96.9 102.9 97.7 91.9 86.6 54.7 46.070 80,775 94.6 98.2 104.3 99.1 93.2 88.0 56.0 44.071 82,045 95.5 99.3 105.4 100.2 94.0 88.7 57.0 43.072 82,880 96.4 100.2 106.2 100.9 94.9 89.7 58.8 47.073 83,830 97.3 101.0 107.0 101.7 96.0 90.7 59.8 47.5

74 84,510 97.8 101.5 107.8 102.3 96.4 91.1 60.4 42.675 85,440 98.5 102.5 108.2 103.0 97.4 92.0 61.2 50.076 86,445 99.3 103.0 109.0 103.7 97.9 92.5 61.4 53.677 87,765 99.9 103.6 109.4 104.2 98.5 93.3 62.0 55.278 88,885 100.0 103.9 109.5 1.04.7 99.0 94.0 62.7 48.0

79 89,870 100.8 1.04.3 110.2 105.2 99.7 94.7 63.0 48.080 90,625 101.5 104.8 110.6 105.7 100.5 95.4 63.2 52.181 91,350 102.1 105.2 111.0 106.2 101.0 95.8 63.3 51.282 92,510 102.9 106.1 111.6 107.2 101.9 96.6 63.4 48.383 93,585 104.0 106.9 112.0 107.9 102.9 97.7 63.5 51.4

84 94,685 104.5 107.4 112.4 108.2 103.4 98.2 63.8 55.785 95,860 105.1 108.1 113.2 109.0 104.0 98.8 64.0 57.286 97,095 105.8 108.9 114.2 109.8 104.7 99.6 64.1 57.887 98,555 106.5 109.4 114.6 110.2 105.5 100.4 64.3 53.788 99,835 107.3 110.2 115.5 111.1 106.3 101.1 64.5 58.5

89 100,985 108.4 111.1 116.2 112.0 107.3 102.0 64.8 53.790 102,345 109.3 112.0 117.0 112.9 108.3 103.0 65.4 57.891 103,575 109.7 112.4 117.4 113.2 108.7 103.5 66.0 57.492 104,705 110.5 113.2 118.0 114.0 109.5 104.2 66.0 60.493 105,775 IL1.0 114.5 119.8 115.3 109.7 104.5 72.0 62.0

94 107,440 112.7 116.1 122.3 117.2 111.4 106.0 73.5 44.095 108,135 113.3 117.0 123.5 118.2 111.8 106.4 74.3 60.6

Elk Creek 109,73096 110,085 114.8 118.7 125.5 119.8 113.3 107.9 77.2 69.0

Beckleyridge 110,230

97 110,412 115.2 119.0 126.0 120.3 113.7 108.4 77.3 67.098 111,349 115.5 119.3 126.3 120.6 114.0 108.8 77.6 67.099 112,182 115.9 119.6 126.6 120.9 11.4.4 109.2 78.0 63.7

100 113,699 116.3 119.8 126.7 121.0 114.8 109.7 78.3 63.4101 114,919 116.8 120.3 127.1 121.5 115.3 110.2 78.6 64.0

102 116,232 117.3 120.6 127.4 122.0 116.0 110.9 79.2 56.6103 117,342 117.9 121.2 128.2 122.6 116.6 111.4 79.7 54.0104 118,587 118.9 122.2 129.4 123.7 117.6 112.3 80.3 58.5105 119,600 119.2 122.5 129.8 124.0 117.8 112.5 80.7 65.8106 120,563 119.3 122.6 129.9 124.1 118.0 112.8 81.0 70.0

107 121,568 120.2 123.3 130.3 124.8 118.9 113.6 81.1 68.0108 122,403 121.0 123.8 130.6 125.2 119.7 114.5 81.3 68.0109 123,560 121.6 124.3 131.0 125.7 120.3 115.1 81.4 65.0110 124,635 122.2 124.8 131.7 126.3 120.8 115.6 81.8 74.7111 125,643 123.2 125.7 132.5 127.3 121.8 116.6 82.0 63.0

112 126,750 123.4 126.0 132.8 127.5 122.0 116.9 82.1 64.0113 127,725 123.8 126.4 133.1 128.0 122.4 117.2 82.5 69.4114 128,705 124.5 127.2 134.2 129.0 123.0 117.9 82.7 74.6115 130,045 125.4 128.0 135.0 129.8 123.9 118.7 84.2 60.0116 131,035 125.6 128.2 135.2 130.0 124.1 118.9 85.1 58.0


Table 5.--Profile elevations for the Umpgua River above Scottsburg--Continued

22


Cross bridgesection (feet)

l00-yearflood /(adjusted)i

December1964

flood



Lowwater ThalwegV

117 132,165 126.0 128.7 135.7 130.5 124.5 119.3 85.4 74.2118 133,110 126.6 129.2 136.0 131.0 125.2 120.0 85.7 72.5119 134,090 127.5 130.2 136.8 132.0 126.1 121.0 86.0 73.8120 135,160 128.8 131.4 137.8 133.2 127.4 122.3 86.6 80.0121 136,090 129.3 131.9 138.3 133.7 127.9 122.7 88.0 81.7

122 137,215 130.0 132.5 138.9 134.3 128.5 123.4 88.4 81.7123 138,090 130.2 132.6 139.0 134.5 128.7 123.7 89.0 82.8124 139,700 130.7 133.0 139.2 134.7 129.3 124.5 89.5 74.3125 140,870 131.4 133.7 140.0 135.5 130.0 125.0 90.1 85.0126 141,820 131.8 134.0 140.2 135.8 130.5 125.5 90.8 83.6

127 143,125 132.5 134.6 140.8 136.4 131.1 126.1 91.6 82.5128 144,435 133.0 135.2 141.2 137.0 131.7 126.7 92.0 72.0129 145,695 133.1 135.3 141.6 137.2 131.8 126.8 92.2 73.5130 146,695 134.6 137.2 142.4 139.3 133.1 128.0 93.0 78.0131 147,770 135.3 139.2 143.0 140.0 133.8 128.5 93.3 81.0

132 148,650 135.8 140.2 143.7 140.7 134.4 129.0 94.0 71.0133 150,110 137.0 141.0 144.9 141.8 135.6 130.0 95.3 86.0134 151,285 138.0 142.4 145.7 142.7 136.4 130.4 95.6 86.4

Gaging sta-tion 3210 151,285

135 152,735 138.7 143.0 146.3 143.4 137.0 131.1 96.0 85.3Smith Bridge 153,170

136 153,465 139.3 143.6 147.1 144.0 137.7 131.8 96.2 84.0137 154,130 139.7 143.9 147.6 144.3 138.0 132.5 96.3 66.0138 154,960 140.4 144.5 148.8 145.2 136.7 132.9 96.6 72.4

139 155,855 141.3 145.5 150.4 146.3 139.7 133.8 99.7 81.5140 156,755 141.7 145.8 151.0 146.7 140.9 134.2 105.2 93.0141 157,565 142.5 146.6 152.2 147.6 140.8 135.0 109.2 96.6142 158,850 143.2 147.2 153.0 148.3 141.5 135.8 112.0 104.0143 160,175 144.0 147.9 153.9 149.0 142.3 136.8 113.0 99.8

144 161,150 145.0 148.7 154.9 150.0 143.3 137.8 114.2 99.0145 162,350 147.1 150.8 158.0 152.4 145.3 139.9 115.1 100.0146 163,600 148.0 151.5 158.7 153.2 146.3 141.0 115.2 99.5147 165,050 148.8 152.3 159.6 154.0 147.2 141.9 115.4 100.4148 165,970 150.0 153.5 161.3 155.4 148.4 143.0 115.5 102.8

149 167,020 150.8 154.3 162.2 156.2 149.2 143.8 115.6 106.5150 168,440 151.4 154.9 162.9 156.8 149.8 144.5 115.6 99.5151 169,460 152.0 155.3 163.4 157.3 150.3 145.0 115.9 99.3152 170,760 152.7 156.0 164.1 158.0 151.0 145.7 116.3 104.7153 171,970 153.5 156.7 164.9 158.7 151.8 146.5 117.0 105.4

154 172,960 154.0 157.1 165.4 159.2 152.2 147.9 117.8 103.1155 173,905 155.0 158.2 166.7 160.3 153.3 148.0 120.4 107.2156 175,090 155.6 158.7 167.2 160.8 153.9 148.7 122.2 106. 5

157 176,615 156.4 159.5 168.0 161.7 154.7 149.6 124.0 112.8158 177,790 157.1 160.3 168.7 162.5 155.5 150.3 124.2 108.0

159 179,010 157.8 160.9 169.2 163.0 156.1 151.0 124.5 109.8160 179,865 159.6 162.7 171.4 165.0 157.9 152.7 124.7 111.0161 181,080 160.2 163.4 172.0 165.7 158.6 153.4 125.5 104.8162 182,255 161.5 164.6 173.5 167.0 159.9 154.8 129.3 123.6163 183,275 162.1 165.2 174.2 167.6 160.5 155.5 131.5 125.3

164 184,320 162.7 165.9 174.7 168.2 161.2 156.3 133.2 121.5165 185,435 163.5 166.5 175.3 168.9 162.0 157.2 134.5 128.3166 186,445 165.2 168.3 177.3 170.7 163.8 159.0 136.6 128.9167 187,500 167.2 170.2 179.4 172.6 165.8 161.1 137.8 118.1168 188,550 168.6 171.5 180.6 173.8 167.1 162.6 138.5 129.3

169 189,495 169.2 172.0 181.0 174.3 167.7 163.4 139.3 130.1170 190,525 170.4 173.1 181.9 175.4 169.0 164.7 139.8 129.1171 191,585 171.3 174.0 182.8 176.3 169.8 165.6 140.2 124.5172 192,730 172.5 175.2 183.8 177.4 171.0 166.7 140.5 132.9173 193,895 173.8 176.5 185.0 178.7 172.4 168.2 140.7 129.3

174 194,805 175.1 177.7 186.5 180.0 173.0 169.4 140.8 126.6175 196,070 175.8 178.4 187.2 180.7 174.4 170.0 141.0 130.5176 196,920 176.6 179.3 188.2 181.6 175.2 170.8 141.2 127.4177 197,905 177.8 180.6 189.9 183.0 176.4 171.8 141.4 126.4178 198,715 178.6 181.4 190.8 183.8 177.0 172.5 141.6 133.7

-Ptofile elevations or the Jmpqua River ii,ove ScotsburTable 5.- --Continued


23

Distance up-Stream from

ScottsburgCross bridge

section (feet)

100-yearfLood

(adjusted)11'

December1964

flood

Elevation in

500-yearflood

feet above mean sea level

100-year 25-yearflood flood

10-yearflood

Lowwater ThalwegV

179 199,960 179.4 182.1 191.4 184.5 177.8 173.4 141.8 131.4180 200,830 180.8 182.5 192.1 185.0 178.2 173.8 141.9 121.4181 201,740 180.7 183.4 192.9 185.9 179.1 174.6 142.2 130.6182 202,540 181.0 183.8 193.1 186.2 179.5 175.0 143.2 129.6183 203,415 181.7 184.4 193.5 186.8 180.2 175.6 144.2 131.0

184 204,405 182.3 185.1 194.1 187.5 180.8 176.2 146.0 136.2185 205,370 182.9 185.6 194.6 188.0 181.3 176.8 146.9 130.5186 206,335 183.4 186.0 195.0 188.5 181.8 177.3 148.0 142.5187 207,345 184.3 187.0 196.2 189.5 182.7 178.1 149.0 143.0188 209,055 185.4 188.1 197.5 190.6 183.9 179.4 151.4 141.3

189 210,450 186.3 189.0 198.3 191.5 184.8 180.3 152.6 138.0190 211,670 187.1 189.8 199.0 192.2 185.6 181.0 153.6 135.0191 213,545 189.2 191.4 200.4 193.8 187.6 182.9 154.0 133.4192 214,310 189.6 192.3 201.4 194.8 188.1 183.5 154.7 137.2193 215,100 190.3 193.0 202.2 195.5 188.7 184.2 156.0 137.3

194 216,305 192.0 194.8 204.2 197.3 190.4 185.9 156.8 143.6195 217,235 193.0 195.7 205.1 198.2 191.4 187.0 157.2 145.519 218,545 194.5 197.3 206.6 199.7 193.0 188.6 157.6 144.9197 219,640 195.4 198.0 207.2 200.4 194.0 189.6 158.2 147. 5198 220,760 197.2 199.7 208.7 202.1 195.8 191.5 159.3 152.5

199 221,750 198.2 200.7 209.5 203.1 196.9 192.5 159.8 154.5200 222,900 198.9 201.4 210.0 203.6 197 .5 193.2 160.6 143.8201 224,050 199.6 202.0 210.9 204.3 198.2 193.8 161.9 146.6202 225,460 200.7 203.1 211.8 205.4 199.3 194.8 162.4 142.6

KelloggBridge 225,770

203 226,805 202.8 205.4 214.7 207.9 201.3 196.3 163.2 152.4204 227.845 203.2 205.7 215.0 208.1 201.8 196.9 163.7 155.0205 228,980 203.7 206.2 215.3 208.6 202.3 197.5 164.0 153.9206 230.245 204.5 207.0 215.8 209.2 203.0 198.2 164.5 155.8207 231,525 205.2 207.6 216.3 209.8 203.7 199.0 165.3 157.9

208 232,740 206.0 208.4 216.7 210.5 204.4 199.8 166.7 156.8209 234,270 207.3 209.7 218.2 211.9 205.7 200.9 167.6 162.7210 235,385 207.6 210.0 218.4 212.2 206.0 201.2 168.7 158.8211 236,340 208.0 210.4 219.0 212.6 206.4 201.6 169.7 162.2212 238,085 209.0 211.6 220.6 213.9 207.5 202.6 170.3 162.7

213 239,405 209.5 212.0 220.9 214.3 208.0 203.4 170.4 161.7214 240,625 210.1 212.6 221.2 214.8 208.7 204.0 170.8 163.0215 242,078 211.0 213.5 221.7 215.6 209.7 204.8 171.2 153.8216 243,325 211.7 214.0 221.8 216.0 210.4 205.4 171.6 153.2217 245,045 213.7 216.1 223.5 218.2 212.3 207.0 172.0 160.2

218 245,835 214.3 216.8 224.3 219.0 213.0 207.7 172.8 161.8219 246,620 214.5 217.0 224.5 219.1 213.1 207.9 175.2 164.5220 247,700 215.7 218.3 226.0 220.4 214.3 208.9 177.3 171.2221 248,880 216.2 218.8 226.6 221.0 214.8 209.5 183.2 171.6222 249,340 216.3 219.0 226.7 221.1 215.0 209.6 183.5 171.0

223 250,455 216.5 219.1 226.6 221.2 215.2 210.2 184.5 174.5224 251,585 218.3 220.9 228.8 223.1 217.0 212.0 184.6 177.0225 252,740 219.6 222.3 230.4 224.5 218.3 213.4 184.8 180.5226 253,845 220.6 223.4 232.2 225.8 219.2 214.2 184.8 179.7227 255,675 221.7 224.5 233.3 226.8 220.4 215.4 184.9 176.1

228 257,343 222.6 225.2 233.7 227.5 221.2 216.3 185.1 171.2229 258,905 223.7 226.4 234.9 228.7 222.4 217.3 186.0 168.6230 260,055 225.2 228.0 236.7 230.3 223.8 218.6 186.4 177.9231 260,779 225.7 228.4 237.0 230.7 224.3 219.0 186.7 177.2232 261,564 226.0 228.8 237.3 231.0 224.7 219.4 187.0 167.5

233 262,349 226.3 229.0 237.6 231.3 225.0 219.8 190.6 181.0234 263,436 227.1 229.8 238.3 232.0 225.8 220.7 194.3 181.7235 264,393 228.0 230.7 239.1 232.9 226.7 221.7 195.6 175.0236 265,388 228.7 231.4 240.4 233.7 227.4 222.3 195.8 180.7

Yellow Creek 265,540

237 266,728 230.4 233.1 242.0 235.4 229.0 223.9 195.9 188.3238 267,600 231.0 233,7 242.6 236.0 229.7 224.7 197.9 181,2239 268,935 231.7 234.4 243.2 236.7 230.5 225.5 198.6 185.8240 270,063 252.8 235.6 244.5 237.9 231.5 226.6 201.2 194.2

BullockBridge 270,295

Profi1e eiev.tons tor th thnpqa aiver above Scottslrnr


24


Cross bridgeSection (feet)

100-yearflood

(adjusted)

December1964

flood



Lowwater Thalwe-

241 270,395 233.5 236.2 245.3 238.5 232.2 227.3 202.2 194.2242 271,160 235.0 237.8 247.0 240.2 233.7 228.8 203.4 198.4243 271,880 236.5 239.2 248.3 241.6 235.1 230.2 204.2 201.0244 272,752 237.5 240.3 249.4 242.6 236.1 231.3 207.3 201.5245 273,747 239.7 242.3 251.2 244.5 238.4 233.9 207.6 190.0

246 274,744 239.7 242.3 251,2 244.5 238.4 233.9 208.0 190.0247 275,774 241.7 244.3 253.1 246.5 240.4 235.9 208.5 199.0248 276,934 243.1 245.7 254.5 247.9 241.7 237.3 209.0 201.6249 278,184 243.5 246.0 254.7 248.2 242.1 237.7 210.2 201.0250 279,274 244.3 246.8 255.3 249.0 243.0 238.5 210.5 202.7

251 280,119 244.8 247.3 255.8 249.5 243.5 239.0 210.7 193.4252 281,194 246.2 248.9 257.8 251.4 244.9 240.2 211.0 200.7253 282,307 247.2 249.9 259.4 252.4 245.9 241.2 211.9 202.0254 283,429 248.4 251.0 260.0 253.3 247.1 242.4 212.2 207.0255 284,429 249.3 251.8 260.4 254.0 248.0 243.3 212.3 199.5

256 285,317 250.2 252.8 261.5 255.0 248.9 244.0 212.6 201.0257 286,277 251.8 254.5 263.6 256.8 250.4 245.5 213.6 204.4258 287,662 253.3 256.1 265.4 258.5 251.9 246.7 218.3 202.3259 288,712 253.9 256.7 266.2 259.1 252.5 247.4 220.7 210.0260 289,767 254.5 257.2 266.6 259.6 253.0 248.2 220.9 212.8

261 290,882 255.4 258.0 267.2 260.4 254.0 249.2 221.0 202.4262 292,177 256.6 259.2 268.1 261.5 255.3 250.7 221.6 209.0263 293,307 258.0 260.5 269.4 262.8 256.7 252.1 222.7 208.2264 294,515 259.7 262.1 270.8 264.3 258.3 253.8 224.6 208.0265 295,580 260.0 262.5 271.0 264.7 258.8 254.3 229.6 217.5

266 296,870 261.4 263.8 272.0 266.0 260.1 255.5 230.6 219.0267 298,815 262.5 264.9 273.2 267.1 261.2 256.6 231.0 213.3268 300,440 264.0 266.6 275.4 268.9 262.7 257.9 231.2 220.4269 301,548 265.0 267.5 276.3 269.9 263.6 258.8 232.0 219.7270 303,238 266.8 269.3 277.8 271.5 265.5 260.9 233.0 212.0

271 304,543 267.9 270.4 278.9 272.6 266.6 262.0 233.5 217.0272 305,408 269.0 271.5 279.9 273.7 267.7 263.2 235.2 226.0273 306,023 269.5 272.0 280.3 274.2 268.2 263.8 236.2 230.0274 306,997 270.9 273.3 281.5 275.4 269.6 265.4 236.8 228.5275 308,097 271.8 274.3 282.3 276.4 270.6 266.4 240.2 236.0

276 309,197 273.6 276.0 284.5 278.2 272.3 268.0 241.8 237.0277 310,157 274.9 277.4 285.8 279.6 273.6 269.4 243.0 238.0278 311,015 276.1 278.6 287.0 280.8 274.8 270.6 245.2 236.0279 312,021 276.8 279.2 287.7 281.4 275.5 271.4 245.5 226.0280 313,166 277.3 279.8 288.3 282.0 276.0 271.9 245.8 224.0

281 314,016 278.1 280.6 289.0 282.8 276.8 272.7 246.0 233.0282 314,888 279.3 281.8 290.3 284.0 278.0 273.7 246.3 236.8283 315,953 280.9 283.4 291.8 285.6 279.5 275.1 247.5 240.0284 317,060 282.2 284.6 292.7 286.7 280.8 276.5 249.0 241.0285 318,230 283.0 285.4 293.2 287.5 281.7 277.3 249.2 236.7

286 319,073 283.6 286.0 293.7 288.0 282.3 278.0 249.5 234.0287 319,893 285.0 287.5 295.4 289.6 283.6 279.2 250.5 244.5288 320,758 285.7 288.2 296.2 290.4 284.4 279.8 250.6 239.0289 321,758 286.0 288.5 296.5 290.7 284.6 280.2 251.2 240.0290 322,795 286.7 289.3 297.8 291.5 285.2 280.8 251.2 236.0

291 323,835 287.3 289.8 298.2 292.0 285.9 281.4 251.2 240.0292 324,802 287.8 290.2 298.5 292.4 286.4 282.0 251.2 242.0

Wolf Creek 325,520293 326,087 289.0 291.2 298.9 293.1 287.7 283.4 251.4 237.4294 326,977 289.7 292.0 300.0 294.0 288.4 284.0 251.8 241.3

295 327,872 290.4 292.7 300.5 294.6 289.0 284.6 352.2 39.4296 329,622 292.3 294.6 301.9 296.5 290.9 286.4 255.4 240.5

Tyee accessbridge 330,470297 330,632 292.8 295.0 302.5 297.0 291.4 287.0 257.6 241.5

298 331,782 293.7 296.0 303.6 298.0 292.4 288.0 259.0 243.0299 333,022 296.3 298.7 307.0 300.9 294.9 290.4 262.7 250.230 333,947 297.3 299.8 308.1 302.0 295.9 291.5 263.6 245.6301 334,957 298.8 301.3 309.9 303.6 297.4 293.0 264.0 256.0302 336,169 299.7 302.2 310.9 304.5 298.3 293.9 265.7 258.7

Table 5.- - -Coot inued

Table 5.--Profile elevations for the Umpqua River above Scottsburg--Continued

25

1/ Adjusted for storage in proposed Days Creek Lake.

2/ Thalweg, low point in channel.

3/ Cross sections 333-336 correspond to cross Sections 1-4 of part 1 (1972) and supersede those shown in part 1.

CrossSectiOn


bridge(feet)

100-yearflood

(adjusted)l

December1964

flood



Lowwater Thalwee2/

303 337,309 300.6 303.0 311.8 305.4 299.2 294.8 266.4 257.4304 338,584 301.9 304.4 313.2 306.8 300.5 296.1 269.8 262.3305 339,739 303.2 305.6 314.3 308.0 301.8 297.4 272.0 265.0306 340,794 304.3 306.8 315.7 309.2 302.9 298.5 273.5 267.5307 341,794 305.3 307.8 316.7 310.2 303.9 299.5 275.4 260.4

308 343,519 306.4 308.9 317.8 311.3 305.0 300.6 276.4 261.5309 344,976 308.3 310.7 319.3 313.0 306.9 302.5 276.8 267.0310 346,194 309.8 312.3 320.7 314.5 308.5 304.1 277.6 267.0311 347,339 311.5 314.0 322.5 316.4 310.1 305.5 278.2 265.7312 348,462 312.2 314.8 323.2 317.0 310.8 306.2 278.8 265.8

313 349,542 313.2 315.8 324.3 318.0 311.7 307.0 279.6 267.6314 350,367 314.2 316.8 325.5 319.0 312.7 307.9 280.3 269.0315 351,597 314.6 317.2 326.0 319.4 313.2 308.4 280.8 272.3316 352,809 315.4 318.0 326.8 320.3 314.0 309.0 281.4 272.6317 353,926 316.6 319.3 328.1 321.6 315.3 310.2 282.2 272.6

318 355,038 317.9 320.6 329.5 322.9 316.6 311.6 282.7 274.1319 356,213 318.8 321.4 330.2 323.7 317.4 312.5 283.8 272.3320 357,413 319.6 322.2 331.1 324.5 318.2 313.4 285.6 278.6321 358,808 320.7 323.2 332.0 325.5 319.3 314.7 290.5 285.5322 359,638 321.0 323.6 332.3 325.8 319.7 315.2 292.3 284.0

323 360,884 322.2 324.8 333.4 327.0 320.9 316.3 293.0 268.6324 361,939 322.7 325.3 333.9 327.5 321.4 316.8 294.0 281.0325 363,299 323.4 326.0 334.6 328.2 322.2 317.6 295.5 285.5326 364,852 324.8 327.3 335.8 329.6 323.5 319.1 296.5 279.5327 366,445 326.5 329.0 337.7 331.3 325.2 320.8 297.0 287.0

328 367,480 328.4 331.0 339.9 333.4 327.0 322.7 p97.4 272.7329 368,305 329.9 332.5 341.4 335.0 328.6 324.0 297.9 287.7330 369,145 330.8 333.5 342.3 335.9 329.5 325.0 298.2 290.0331 369,803 331.0 333.6 342.4 336.0 329.6 325.2 299.2 283.5332 370,603 331.4 333.9 342.6 336.3 330.0 325.6 299.6 286.0

3/333 371,355 332.4 334.9 343.5 337.3 331.1 326.7 300.9 282.73/334 32,355 333.7 336.0 345.3 338.7 332.0 327.5 -- --3/335 373,465 335.8 338.3 347.5 340.5 334.1 329.43/336 374,355 337.9 340.3 349.3 342.2 335.8 331.3

Table 6.--Profile elevations for the North Umpqoa River. Winchester Dam to Idleyld Park

See footnotes at end of table.

26

Distance up-stream from

Cross Winchester Damsection (in feet)

December1964

flood



Lowwater Thalweg-

V1 135 454.2 458.5 453.4 449.8 447.6 437.6 423.02 680 455.0 459.1 454.0 450.2 448.0 437.6 423 . 5

3 2,680 457.5 461.6 456.6 452.6 450.2 438.0 426.52Ji 4,280 459.7 464.0 459.0 454.7 452.0 438.2 429.0

5 5,216 461.0 465.2 460.2 456.0 453.2 438.3 430.0

V6 6,290 462.4 466.4 461.0 456.9 454.2 438.5 428.07 6,784 463.0 467.3 461.6 457.5 454.7 438.6 425.6

V8 7,630 465.4 469.9 464.0 459.5 456.5 439.0 429.0V9 8,500 466.1 470.5 464.7 460.3 457.3 440.0 434.0

10 9,304 466.8 471.0 465.4 461.2 458.3 443.0 436.7

Il 10,627 469.4 473.1 468.2 464.1 461.1 447.6 439.011,560 477.8 482.7 476.2 471.1 467.7 450.5 441.0

13 12,312 478.3 483.0 476.8 471.7 468.3 451.5 433.514 13,997 479.8 484.6 478.3 473.2 469.8 455.3 449.0

V15 15,114 481.4 486.0 480.0 475.3 472.1 458.6 451.0

16 16,569 484.9 489.0 483.7 479.4 476.2 459.6 451.0a'17 17,660 486.6 490.7 485.4 481.0 478.0 463.2 458.0

18 18,424 487.5 491.4 486.3 482.0 479.0 464.0 455.019 19,609 489.7 493.7 488.5 484.1 481.1 464.3 447.520 21,059 492.1 495.9 491.0 486.9 484.0 469.8 459.5

21 22,279 493.9 497.8 492.9 488.8 485.9 470.7 461.022 23,564 495.6 499.6 494.6 490.5 487.6 471.3 466.023 24,739 497.7 501.7 496.7 492.4 489.5 472.5 464.524 25,809 499.9 504.0 498.9 494.6 49L.6 477.2 472.225 27,254 502.9 506.9 501.9 497.9 495.3 480.3 475.3

V26 28,300 504.5 508.3 503.5 499.8 497.4 484.5 480.027 29,184 506.5 509.8 505.2 501.6 499.5 485.6 475.628 30,464 509.7 513.4 508.8 505.0 502.5 486.4 478.429 31,459 511.5 515.2 510.6 506.8 504.2 487.0 482.530 32,454 514.3 518.2 513.3 509.2 506.3 489.8 470.0

31 33,699 516.0 519.9 515.0 510.9 508.1 491.8 480.332 35,069 519.3 523.1 518.3 514.4 511.7 495.5 480.033 35,994 521.3 525.3 520.3 516.3 513.6 497.0 483.534 37,117 523.2 526.9 522.2 518.3 515.6 497.5 490.035 38,572 526.7 530.5 525.8 521.6 518.7 500.9 497.0

36 39,702 528.6 532.2 527.7 523.6 520.7 503.2 497.737 40,916 531.3 535.0 530.4 526.4 523.4 508.2 499.738 42,171 536.0 540.2 535.1 530.9 527.7 510.8 503.8

V39 43,325 540.0 544.1 539.0 534.4 531.0 511.4 504.040 44,840 542.0 546.1 541.1 536.7 533.5 515.5 508.5

41 46,400 544.2 548.4 543.2 538.8 535.6 518.5 507.542 47,405 546.3 550.5 545.2 540.7 537.6 521.0 512.543 48,553 549.3 553.6 548.2 543.7 540.8 523.8 517.044 49,883 552.1 556.4 551.1 546.6 543.8 526.8 519.0

Dixon Creek

45 51,413 554.2 558.2 553.3 549.2 546.3 528.0 518.5a'46 52,730 556.6 560.2 555.6 551.5 548.6 533.0 528.0

47 53,678 558.5 562.3 557.6 553.4 550.6 535.5 528.048 55,018 563.7 567.8 562.3 557.7 554.4 536.8 510.0

Clover Creek

49 55,865 565.5 570.1 564.7 560.1 556.9 540.6 535.6Vs0 56,700 569.1 573.4 568.4 564.0 561.0 543.0 540.0

51 57,500 570.8 575.2 570.1 565.8 562.8 545.3 520.052 58,500 572.0 576.0 571.0 566.6 563.6 545.6 527.053 59,858 573.0 577.2 572.2 567.8 564.7 545.8 531.3

54 61,476 576.7 580.2 576.1 572.2 569.2 548.3 543.3V55 62,560 578.1 581.6 577.5 573.7 570.7 550.0 545.0

56 63,596 579.5 583.0 578.8 574.9 571.8 551.0 545.057 64,606 581.5 585.4 580.8 576.8 573.6 552.6 544.0

Oak Creek 64,800

58 65,724 584.1 588.4 583.9 579.4 576.2 553.0 548.559 66,784 585.8 590.3 585.5 580.9 577.6 556.8 553.0

68,116 588.5 593.2 588.2 583.6 580.5 566.2 557.761 69,166 591.1 595.8 590,8 586.5 583.8 567.1 562. 5

62 70,116 592.9 597.6 592.7 588.6 586.2 571.2 565.0

Table 6.--Prof lie elevations for the North Umpqua River. Winchester Dais to Idlevid Park--Continued

See footnotes at end of table.

27


Cross Winchester Damsection (in feet)

December1964flood

Elevation, In feet above mean sea level


Lowwater

1/Thalweg-

63 71,336 596.3 601.0 596.0 592.1 589.8 573.1 569.064 72,626 600.1 605.0 599.8 595.7 593.0 575.8 568.365 73,606 602.3 607.2 602.0 597.6 594.9 577.2 569.066 74,771 605.0 610.0 604.7 600.2 597.5 580.3 576.067 75,791 607.4 612.4 607.1 602.5 599.8 584.0 575.5

68 76,773 610.1 615.4 609.7 604.9 602.0 586.0 572.069 77,940 611.9 617.1 611.5 606.8 604.0 588.6 580.070 79,072 617.4 622.7 617.0 612.1 609.1 590.6 583.0

80,000 619.4 624.7 619.1 614.3 611.4 595.0 591.072 80,625 619.9 625.0 619.5 614.9 612.0 596.0 564.0

73 81,910 622.2 628.0 621.8 616.7 613.6 598.0 592.374 82,770 623.2 628.9 622.8 617.8 614.8 599.7 587.075 83.565 624.6 630.1 624.2 619.3 616.3 602.0 587.076 84,640 627.8 633.8 627.5 622.4 619.3 603.5 589.3

Cooper Creek

77 85,670 630.4 636.0 630.1 625.0 621.8 606.0 597.078 86,600 632.4 638.1 632.0 626.8 623.7 608.1 595.479 87,865 634.2 639.8 633.9 629.0 626.0 610.5 603.080 88,885 636.7 642.2 636.4 631.3 628.3 611.0 603.481 89,615 638.5 643.8 638.2 633.1 630.1 612.1 604.5

82 90,945 640.7 646.1 640.4 635.5 632.6 615.6 610.583 91,770 641.8 647.1 641.5 636.7 633.9 617.5 610.084 92,837 643.9 649.2 643.6 638.9 636.1 621.8 608.785 94,054 646.7 652.0 646.4 641.9 639.2 624.4 614.386 94,954 648.8 654.0 648.4 644.1 641.5 626.3 611.0

87 96,504 651.6 657.0 651.3 647.0 644.3 630.2 619.3Huntley Creek

88 97,394 653.0 658.5 652.7 648.7 646.2 630.6 615.089 98,634 656.6 660.4 656.4 652.3 649.5 631.0 625.290 99,624 658.1 661.8 657.9 653.5 650.6 634.8 630.0

91 100,644 659.0 662.6 658.8 654.5 651.6 634.8 627.092 101,519 660.5 664.1 660.3 656.0 653.0 635.2 630.593 102,545 662.2 665.8 662.0 657.7 654.8 636.0 629.594 103,402 663.5 667.0 663.3 659.0 655.8 637.0 633.095 104,567 665.2 668.7 665.0 660.7 657.5 641.9 635.5

96 105,782 667.6 671.6 667.4 663.1 660.1 644.6 639.397 106,764 669.5 673.4 669.3 665.2 662.4 649.5 643.398 107,727 672.3 676.2 672.0 668.1 665.5 651.3 638.0

Floyd FrearBridge 107,800

99 108,259 673.7 677.6 673.4 669.5 666.9 651.5 643.8Gaging station

3185 108,580100 109,374 676.2 680.5 675.9 671.7 668.9 651.7 642.0101 110,435 678.3 683.1 678.0 673.4 670.4 651.9 643.0

102 111,498 680.5 685.4 680.2 675.1 671.9 652.1 646.6103 112,548 682.9 687.9 682.5 677.1 673.5 652.8 629.0104 113,255 683.7 688.6 683.4 678.1 674.5 657.3 652.5105 113,868 685.0 689.9 684.7 679.5 676.0 658,2 631.4106 114,888 688.4 694.6 688.0 681.8 677.9 659.5 643.6

Little River 115,340107 115,783 693.0 697.0 692.8 688.5 685.5 664.9 6530108 116,580 695.6 700.3 695.4 690.7 687.5 667.0 659.0109 117,524 697.7 702.6 697.4 692.5 689.1 667.8 659.0110 118,314 700.1 705.6 699.8 694.5 690.9 670.7 655.4

111 119,259 701.0 706.8 700.8 695.4 691.8 671.5 660.7112 120,159 702.7 708.2 702.4 696.8 693.0 672.8 666.1113 120,883 703.5 709.0 703.2 697.6 694.0 674.5 659.0114 121,928 704.7 710.5 704.4 698.8 695.0 675.8 671.2115 123,443 707.4 713.2 707.1 701.6 697.7 677.6 668.5

French Creek116 124,697 708.5 714.4 708.2 702.8 699.0 684.6 675.6117 125,637 709.6 715.4 709.4 704.0 700.3 686.0 665.5

Lone RockBridge 125,870

Table 6, --Prof lie elevations for the North Umpqua River. Winchester Dam to Idleyld Park--Continued

1/ Thalweg, low point in channel.2/ Section not shown on orthophoto map.3/ Section revised for step-backwater computation.

28

Crosssection


Winchester Dam(in feet)

December1964

flood

Elevation. in feet above mean sea level


Lowwater 1,Thaiweg-

118 126,382 711.0 717.0 710.7 705.2 701.4 686.4 678.4119 127,320 712.4 718.2 712.1 706.9 703.4 687.1 678.0120 127,990 714.1 719.9 713.8 708.5 705.0 687.5 680.5121 128,748 716.0 721.9 715.8 710.3 706.9 687.9 682.4122 129,500 718.6 724.8 718.3 712.6 709.1 689.2 677.2

123 130,100 720.4 727.0 720.1 714.2 710.4 691.6 676.0124 130,800 721.0 727.6 720.7 714.7 711.0 692.0 677.5125 131,415 721.6 728.1 721.3 715.3 711.6 692.3 685.4126 132,465 724.0 730.7 723.7 717.8 714.1 695.8 691.0

&1127 133,200 726.5 733.3 726.2 720.2 716.6 697.5 693.0

128 134,170 730.3 736.8 730.0 724.0 720.2 703.8 684.5Private foot-

bridge 135,100129 135,112 732.5 739.0 732.2 726.4 722.6 704.2 693.2130 135,988 734.9 742.0 734.6 728.4 724.5 705.5 693.0

131 136,663 736.7 744.0 736.4 730.0 726.0 706.5 699.0132 137,058 737.0 744.3 736.7 73D.4 726.4 706.7 695.2133 137,730 738.1 745,4 737.8 731.6 727.6 708.4 690.0134 138,620 739.3 746.6 739.0 732.7 728.7 710.6 699.0135 139,770 741.1 748.4 740.8 734.9 731.0 711.2 705.0

136 140,910 743.6 750.7 743.3 737.5 733.8 712.0 693.0137 141,800 745.6 753,0 745.2 739.2 735.3 715.4 686.5138 143,003 746,3 753.9 746.0 740.0 736.2 716.7 710.0139 144,005 750.0 757.6 749.6 743.6 739.8 719,7 710.0

30

Table 7. --Revised profile elevations for the South Utnpua River


29

StationReport Map

reference referencell


mouth(feet)

100-yearfled

(adjigsted)a'

December1964

flood



Lowwater Thalweg

1 3+40 0 399.3 400.6 404.7 401.5 398.3 395.3 363.4 356.02 8+75 535 363.5 351.73 13+05 965 363.6 357.34 25+15 2,175 400.4 401.6 405.9 402.5 399.0 396.0 363.8 356.55 38+55 3,515 366.1 363.8

6 50+10 4,670 -- 366.7 365.57 64+10 6,070 400.7 402.5 406.7 403.5 400.3 397.4 366.9 366.08 78+10 7,470 -- 371.8 371.09 84+75 8,135 372.5 369.5

10 95+60 9,220 373.0 370.7

11 100+15 9,675 401.0 403.0 407.0 404.0 401.2 399.1 373.1 370.012 112+60 10,920 373.2 369.013 124+80 12,140 373.5 371.714 132+65 12,925 375.4 373.015 138+90 13,550 40l2 3/403.6 407.3 404.4 401.8 399.9 375.6 372.3

16 151+20 14.780 -- 375.8 375.017 156+35 15,295 -- 377.1 376.018 166+65 16,325 401.4 J404.2 407.5 404.7 402.3 400.5 377.7 374.219 177+35 17,395 -- 378.5 376.020 182+40 17,900 401.7 31404.9 407.8 405.2 403.2 401.9 380.0 377.5

21 190+60 18,720 380.2 378.022 198+40 19,500 380.2 380.023 207+75 20,435 380.2 379.524 2254-25 22,185 403.2 3/406.8 408.8 407.0 405.8 405.0 380.4 379.025 239+45 23,605 404.0 3/4082 409.5 408.2 407.4 406.4 381.8 379.5

26 249+80 24,640 404.8 3/409.0 410.0 409.0 408.3 407.5 381.8 380.027, 28 259+60 25,620 405.1 j409.7 410.4 409.8 409.0 408.1 381.9 379.0

Conn Ford Bride 25,62029 262+30 25,890 405.2 3/409.7 410.3 409.7 408.9 408.1 381.9 378.5

274+60 27,120 406.0 3/411.1 411.8 411.2 410.3 409.5 382.0 380.0

31 283+50 28,010 406.4 3/412.0 412.6 412.0 411.0 410.2 383.8 382.032 295+20 29,180 407.1 3/413.2 413.9 413.2 412.1 411.2 385.2 380.033 306+20 30,280 407.8 3/414.1 414.9 414.1 413.0 412.0 386.9 385.034 317+20 31,380 408.6 3/415.2 416.0 415.3 414.0 413.0 387.1 379.035 328+20 32.480 409.4 3/416.9 417.9 417.0 415.5 414.3 387.2 380.7

36 339+35 33,595 410.0 3/417.8 418.8 417.9 416.4 415.0 387.2 381.037 349+15 34,575 411.0 3/419.4 420.5 419.5 417.8 416.3 387.3 363.038 358+95 35,555 411.5 3/419.9 421.0 420.0 418.3 416.8 389.0 381.039 368+95 36,555 412.2 3/421.1 422.3 421.2 419.4 417.8 389.6 376.640 378+35 37,495 413.2 3/422.7 423.8 422.8 420.9 419.2 391.0 389.0

41 387+65 38,425 415.1 3/424.7 426.0 424.8 422.9 421.0 394.0 393.042 3951-90 39,250 416.6 3/426.5 427.7 426.6 424.6 422.8 396.0 387.043 4051-70 40,230 418.1 3/428.3 429.7 428.4 426.4 424.4 396.1 391.044 415+25 41,185 418.6 3/428.9 430.2 429.0 426.9 425.0 396.5 387.045 424+05 42,065 419.4 3/429.7 431.0 429.8 427.7 425.8 396.6 389.0

46 435+05 43,165 420.7 3/431.6 433.0 431.7 429.4 427.3 397.8 395.847 447+80 44,440 421.6 3/432.4 433.8 432.5 430.3 428.2 398.0 380.548 457+10 45,370 422.2 3/433.1 434.4 433.2 431.0 428.8 398.0 390.049 470+90 46,750 423.2 3/434.2 435.7 434.3 432.0 429.8 400.6 392.650 478+70 47,530 423.9 3/435.2 436.7 435.4 433.0 4307 400.8 386.3

51 487+45 48,405 424.5 3/436.4 437.9 436.5 434.0 431. 401.0 392.052 496+55 49,315 425.7 3/437.0 438.5 437.1 434.7 432.: 401.1 397.053 502+05 49,865 426.4 3/437.7 439.3 437.8 435.4 433.0 402.2 398.054 509+30 50,590 427.2 3/438.4 440.0 438.6 436.2 433.8 407.0 399.055 518+40 51,500 428.2 3/439.4 440.9 439.5 437.2 434.9 407 .5 393. 5

56 531+00 52,760 429.2 3/440.8 442.2 440.9 438.6 436.2 407.6 399.057 5401-60 53720 430.4 3/442.2 443.7 442.4 440.0 437.6 408.1 402.658 555+50 55,210 432.2 3/444.2 445.7 444.3 441.8 439.4 408.2 399.259 564+60 56,120 433.1 3/445.3 446.9 445.4 442.9 440.4 409.5 404.060 572+30 56,890 434.3 3/446.5 448.2 446.7 444.1 441.6 411.0 407. 5

61 582+95 57,955 435.3 3/447.3 449.0 447.4 444.9 442.4 415.3 410.8Deer Creek -- 58,035

62 596+75 9,335 436.5 3/448.3 449.7 448.2 445.8 443.4 415.5 408.063 611+50 60,810 436.3 3/449.5 452.1 449.3 446.2 443.4 415.6 411.664 625+25 62,185 437.9 3/450.8 453.2 450.6 447.6 444.8 415.8 407.3

Table 7.--Revised profile elevations for the South Umpqua River--Continued


30

Station

Report Map 1/reference reference-


mouth(feet)

100-yearflood

(adjusted)a'

December1964

flood



Lowwater Thalweg

65 635+20 63,180 438.7 3/451,5 454.0 451.3 448.4 445.6 415.9 407.066 643+55 64,015 439.2 3/451.9 454.3 451.7 448.8 446.0 417.0 409.067 651+70 64,830 439.9 3/452.7 455.0 452.5 449.7 446.9 417.4 411.568 661+80 65,840 440.9 j453.7 456.0 453.5 450.6 447.9 417.8 412.869 6751-90 67,250 442.1 3/454.8 457.0 454.6 451.8 449.0 423.1 421.8

70 683+70 68,030 442.9 3/455.4 457.7 455.2 452.4 449.7 423.8 416.071 694+65 69,125 4-43.7 3/456.0 458.1 455.8 453.0 450.4 425.2 422.272 703+00 69,960 445.3 3/457_I 459.2 457.0 454.3 451.8 426.0 423.073 712+85 70,945 446.9 3/458.1 460.0 458.0 455.5 453.1 426.7 423.274 722+95 71,955 449.7 3/461.6 463.5 461.5 458.9 456.4 427.5 425.0

75 136+85 73,345 452.1 3/464.2 466.1 464.1 461.5 458.9 431.0 427.076 748+65 74,525 453.4 j465.8 467.7 465.7 463.0 460.4 431.2 424.777 759+65 75,625 454.6 3/467.1 469.0 467.0 464.3 461.7 432.5 430.578 771+85 76,845 455.2 3/467.6 469.4 467.4 464.8 462.2 433.8 431.379 788+75 78,535 456.8 3/468.9 470.8 468.8 466.1 463.5 439.3 437.0

80 801+10 79,770 457.4 3/469.1 471.0 469.0 466.4 463.9 440.6 432.081 807+15 80,375 457.8 3/469.4 471.3 469.3 466.7 464.3 440.7 428.082, 83 817+50 81,410 459.2 3/471.4 473.1 471.2 468.6 466.1 441.5 428.5

Highway I-S bridge 81,410 -- -- --84 8281-20 82,480 459.5 3/471.9 473.7 471.8 469.2 466.5 441.6 434.0

85 840+10 83,670 460.8 3/473.4 475.1 473.2 470.6 467.9 441.8 436.886 850+50 84,710 462.0 3/474.1 476.0 474.0 471.5 468.9 442.0 437.087 855+40 85,200 462.6 3/474.6 476.4 474.4 472.0 469.4 443.1 438.088 863+70 86,030 463.5 3/475.3 477.0 475.2 472.8 470.3 443.1 437.089 876+75 87,335 464.9 3/476.9 478.6 476.8 474.3 471.8 443.2 437.0

90 890+65 88,725 466.4 3/478.6 480.3 478.5 476.0 473.4 443.3 432.691 905+60 90,220 467.4 3/479.1 480.9 479.0 476.6 474.1 448.2 446.492 915+35 91,195 468.3 3/479.6 481.3 479.5 477.2 474.8 450.5 448.593 922+35 91,895 469.0 3/480.1 481.7 480.0 477.7 475.4 450.7 447.594 932+75 92,935 470.3 3/481.1 482.6 481.0 478.8 476.6 450.8 446.0

95 943+90 94,050 471.3 3/481.9 483.4 481.8 479.5 477.3 454.8 452.096 949+55 94,615 471.6 3/481.9 483.4 481.8 479.6 477.5 454.8 445.097 961+85 95,845 472.2 3/482.8 484.2 482.7 480.4 478.2 454.9 448.098 980+90' 97,750 473.7 3/484.8 486.3 484.7 482.4 480.1 455.2 439.599 995+00 99,160 475.1 3/486.3 487.6 486.2 484.1 481.9 455.3 445.8

100 1011+10 100,770 477.1 3/488.3 489.5 488.2 486.1 483.9 455.3 447.8101 1020+55 101,715 478.2 3/489.1 490.3 489.0 487.1 484.9 456.8 451.0102 1030+25 102,685 479.3 3/490.1 491.3 490.0 488.4 486.2 456.8 444.0103 1048+30 104,490 480.1 3/490.8 492.0 490.7 489.0 487.0 457.0 454.0104 10591-55 105,615 481.2 3/491.6 492.7 491.5 489.8 487.8 458.1 453.0

105 1067+85 106,445 482.5 3/492.6 493.7 492.5 490.9 489.2 460.8 455.0106 1077+85 107,445 484.0 /493.6 494.7 493.5 492.0 490.5 461.1 457.0107 1091+40 108,800 484.5 3/495.9 3/496.6 3/495.5 3/494,0 3/492.5 465.3 458.5108, 109 1096+50 109,310 485.7 3/496.8 3/497.5 3/496.4 3/495.0 3/493.5 465.6 462.5

Gaging station 3120 andHighway 99 bridge 109,430

110 1103+40 110,000 487.3 3/499.5 3/500.4 3/499.4 3/497.2 3/495.2 466.0 463.0Ill 1111+10 110,770 488.7 3/500.0 3/500.9 3/499.9 3/498.0 3/496.1 466.1 460.0112 1122+75 111,935 489.8 3/500.5 3/501.4 3/500.4 3/498.8 497.1 466.9 448.5113 1134+55 113,115 490.5 3/501.0 3/501.9 3/500.9 3/499.2 497.7 467.0 464.0114 1145+20 114,180 491.7 3/501.8 3/502.8 3/501.8 3/500.2 498.7 467.2 462.0

115 1152+70 114,930 492.3 3/502.6 3/503.5 3/502.5 501.0 499.6 467.4 462.5116 1162+00 115,860 493.7 3/503.4 3/504.4 3/503.4 502.0 500.5 468.5 461.0117 1172+00 116,860 494.7 3/504.3 3/505.2 3/504.2 502.9 501.5 470.1 462.0118 1185+60 118,220 495.6 3/505.4 3/506.4 3/505.4 504.0 502.5 470.4 464.0119 1196+45 119,305 496.7 3/506.8 3/507.8 3/506.7 505.2 503.6 470.5 464.5

120 1204+70 120,130 497.7 3/508.0 3/509.1 508.0 506.3 504.6 470.7 467.2121 1216+95 121,355 499.3 3/509.2 3/510.3 509.2 507.6 506.0 473.8 463.5122 1227+80 122,440 500.0 3/510.1 3/511.1 510.0 508.4 506.7 474.6 472.5123 1236+80 123,340 501.2 3/511.1 3/512.0 511.0 509.3 507.6 474.9 468.5124 1246+65 124,325 501.8 3/511.5 3/512.5 511.4 509.7 508.0 475.4 468.5

125 1258+00 125,460 502.9 3/512.9 3/513.9 512.8 511.0 509.3 476.3 466.5126 1267+20 126,380 504.2 3/513.8 3/514.8 513.7 512.0 510.5 478.5 476.5127 1274+80 127,140 505.9 /s14.9 3/515.8 514.8 513.3 511.9 479.8 478.3128 1285+00 128,160 507.6 3/516.8 3/517.6 3/516.8 3/515.5 3/513.9 484.2 480.5129 1293+00 128,960 508.5 3/517.4 3/518.2 3/517.4 3/516.0 3/514.5 484.5 482.0

Table 7.--Revised profile elevations for the South Umpgua River--Continued


31

Station

Report Napreference referenceJi

Distance -stream from

muth(feet)

100-yeasflood

(adiusted)V

December1964

flood



Lowwater Thaiwee

[30 1301+65 129,825 509.4 3/517.9 3/518.7 3/517.9 3/516.5 3/515.0 484.8 480.8[31 1310+85 130,745 510.4 3/518.5 3/519.2 3/518.4 3/517.0 3/515.6 485.4 481.5

Lookingglass Creek 130,800 -- -- -- -- -- -- --132 1323+20 131,980 511.4 j5192 3/520.0 /5l9.0 3/517.7 /5l6.3 486.5 481.5133 1335+95 133,255 512.2 3/520.0 3/521.0 3/519.8 3/518.5 3/517.2 488.8 484.3

134 1346+80 134,340 512.8 3/520.6 3/521.6 3/520.5 3/519.1 3/517.8 489.8 483.8135 1357+25 135,385 513.4 3/521.4 3/522.4 3/521.2 3/519.8 3/518.5 490.4 489.5136 1366+90 136,350 514.1 3/5220 3/523.0 3/521.8 3/520.4 j5l9.1 491.5 489.0137 1378-40 137,500 514.6 3/523.0 523.9 522.6 521.2 519.7 497.5 494.5138 1386+55 138,315 515.1 j523.8 524.7 523.4 522.0 520.4 498.3 497.0

139 1396+85 139,345 516.0 3/524.6 525.6 524.2 523.0 521.3 499.0 497.5140 14054-05 140,165 516.8 3/525.6 526.6 525.3 524.0 522.3 499.2 496.0141 1414+60 141,120 518.4 3/528.1 529.3 527.8 526.2 524.3 499.4 494.5142 14281-35 142,495 520.8 3/531,8 533.4 531.4 529.5 527.4 500.6 498.4143 1437+05 143,365 521.5 3/533.0 534.6 532.5 530.4 528.3 500.8 500.0

144 1447+65 144,425 522.2 3/534.2 535.9 533.7 531.4 529.2 501.0 496.0145 1458+15 144,475 523.0 3/535.0 536.8 534.5 532.2 530.0 501.2 499.5146 14701-20 146,680 524.4 3/537.3 539.2 536.8 534.2 531.9 501.6 497.5147 1478+80 147,540 525.4 3/538.9 541.0 538.3 535.5 533.1 503.8 496.5148 1489+70 148,630 526.7 3/540.3 542.3 539.8 537.1 534.6 504.7 502.0

149 1498+25 149,485 527.4 3/541.2 543.1 540.7 538.0 535.4 505.5 501.0150 1506+25 150,285 528.1 3/542.0 544.0 541.6 538.9 536.2 505.9 501.0151 1517+60 151,420 529.6 3/543.8 546.1 543.3 540.4 537.6 510.7 505.0152 1528+15 152,475 531.1 3/544.8 547.4 544.3 541.3 538.6 510.8 502.0153 1536+80 153.340 532.8 3/546.5 548.9 545.9 543.0 540.4 513.0 505.0

154 1551+65 154,825 534.8 3/548.3 550.6 547.7 544.8 542.4 515.2 509.0155 1557+80 155,440 535.0 3/548.4 550.9 548.0 545.0 542.5 515.4 511.5156 1571+20 156,780 537.2 3/550.7 552.9 550.2 547.3 544.9 515.6 506.5157 1579+75 157,635 538.6 3/551.4 553.5 550.9 548.0 545.7 516.0 508.0158 15901-75 158,735 540.2 3/552.4 554.4 552.0 549.4 547.2 516.2 511.7159 16051-10 160,170 541.2 3/552.8 554.8 552.4 550.0 547.8 520.2 519.0160 1613+10 160,970 542.0 /553.3 555.1 552.8 550.6 548.4 520.4 517.4161 1618+60 161,520 542.4 3/553.6 555.4 553.2 551.0 548.8 522.6 516.0162 1629+85 162,645 543.4 3/554.4 556.1 554.0 551.8 549.7 523.0 518.5163 1636+25 163,285 543.9 3/554.4 556.1 554.0 552.0 549.9 524.0 522.5

164 1644+40 164,100 544.5 3/555.4 557.0 555.0 552.8 550.7 524.3 517.0165 1654+25 165,085 545.5 3/556.8 558.6 556.4 554.1 551.9 524.4 522.0166, 167 1661+85 165,845 546.7 3/558.2 560.0 557.8 555.4 553.1 524.9 523.0

Nary Moore Bridge 165,845168 1667+80 166,440 547.8 3/559.6 561.6 559.2 556.7 554.4 527.6 525.0

169 1677+15 167,375 548.7 3/560.5 562.4 560.0 557.5 555.2 528.0 527.0170 1691+75 168,835 550.0 3/562.0 564.0 561.6 559.0 556.7 531.7 530.7171 1703+65 170,025 550.9 3/562.6 564.6 562.1 559.6 557.4 533.6 528.5172 1720-1-55 171,715 552.4 3/563.7 565.6 563.2 560.8 558.7 536.8 516.0173 1736+40 173,300 553.9 3/564.9 566.7 564.4 562.2 560.1 537.0 531.0

174 1-750+80 174,740 555.5 3/566.5 568.1 566.1 563.9 561.9 537.2 534.7175 1764+65 176,125 556.5 3/567.8 569.4 567.4 565.1 563.0 537.5 536.0176 1780+45 177,70-5 557.6 3/569.1 570.8 568.7 566.3 564.1 537.8 529.0177 1785+65 178,225 558.6 3/570.1 571.8 569.7 567.2 565.0 537.9 530.0178 1793+05 178,965 560.5 3/572.9 575.0 572.4 569.7 567.3 540.2 539.0

179 1811+50 180,810 562.5 3/575.2 577.4 574.7 571.9 569.5 540.4 535.6180 1824+80 182,140 563.8 3/576.4 578.5 575.9 573.2 570.8 540.6 538.4181 18301-80 182,740 564.6 3/577.3 579.3 576.9 574.2 571.8 540.7 539.5182 1846+35 184,295 566.1 3/579.2 581.2 578.7 576.1 573.6 541.0 537. 5183 1858+60 185,520 567.3 3/581.0 583.2 580.5 577.6 575.0 541.8 534.0

184 1867+00 L86,360 568.5 3/582.4 584.7 581.9 579.0 576.3 543.0 526.0185 1879+25 187,585 570.2 3/584.5 586.8 583.9 580.9 578.2 543.1 537.0186 1885+55 188,215 571.0 3/585.5 587.9 585.0 581.9 579.1 546.3 541.0187 1894+80 189,140 572.0 3/586.6 589.0 586.0 582.9 580.1 549.5 546.5188 1905+95 190,255 573.5 3/588.0 590.4 587.4 584.2 581.5 550.8 548.5

189 1920+50 191,710 575.2 3/590.0 592.7 589.4 586.1 583.2 552.2 549.0190 1932+80 192,940 577.0 3/592.2 594.9 591.5 588.1 585.2 554.6 538.5191 1946+60 194,320 579.6 3/594,1 596.6 593.5 590.4 587.8 555.1 549.0192 1958+00 195,460 581.9 3/596.4 598.8 595.8 592.7 590.2 555.2 552.0193 1968+90 196,550 583.8 3/598.5 601.0 597.9 594.6 591.9 556.9 555.0

-Revised proeile e1.evatiois for the South thupqua RiverTable 7.- --Continued

Station

Report Mapreference referenceJ


mouth(feet)

100-yearflood

(adjusted)J

December1964

flood



Lowwater Thaiweg

194 1981+65 197,825 585.2 3/600.4 602.9 599.6 596.3 593.5 559. 5 552.5195 1993+45 199,005 585.5 3/600.6 603.2 600.0 596.6 593.8 565.7 556.5196 2002+25 199,885 586.2 3/601.1 603.7 600.5 597.1 594.1 570.2 555.0197 2012+20 200,880 587.0 3/602.0 604.5 601.4 598.0 595.2 570.4 566. 5

198 2026+80 202,340 591.8 3/606.1 608.8 605.4 602.0 599.3 571.3 568.5

199 2035+55 203,215 594.2 3/607.2 611.2 607.9 604.4 601.7 573.0 572.0Myrtle Creek 203,265

200 2047+45 204,405 597.0 3/608.9 613.7 610.4 607.1 604.6 574.4 571.0201 2062+60 205,920 599.4 3/612.6 616.3 613.1 609.9 607.2 578.2 564.0202 2086+65 208,325 601.7 3/615.0 618.9 615.5 612.1 609.3 579.5 577.5

203 2102+35 209,895 603.0 3/615.5 619.2 616.0 612.6 610.0 579.7 576.5204 2114+70 211,130 604.2 3/616.5 620.1 617.0 613.9 611.5 579.9 577. 5

205 2126+80 212,340 605.0 3/617.5 621.0 618.0 615.0 612. 5 581. 5 579.0206 2139+85 213,645 605.9 3/619.0 622.5 619.5 616.3 613.7 582.5 580,5207 2153+15 214,975 607.0 3/620.0 623.1 620.4 617.6 615.1 582.6 578.0

208 2166+10 216,270 608.1 3/620.8 623.7 621.2 618.8 616.5 582.6 579.5209 2179+05 217,565 609.4 3/621.8 624.4 622.1 620.0 617.9 583.3 582.0210 2189+20 218,580 610.2 3/622.7 625.2 623.0 620.9 618.8 583.5 582.5211 2204+55 220,115 611.5 3/624.2 626.5 624.5 622.6 620.5 5?9.3 586.5212 2211+70 220,830 612.3 3/624.9 627.4 625.3 623.3 621.2 589.3 588.5

213 2224+85 222,145 613.1 3/625.6 628.2 626.2 624.0 622.0 589.8 582.0214 22401-20 223,680 614.5 3/627.6 630.2 628.3 625.9 623.8 590.2 586.0215 2254+80 225,140 615.9 3/629.2 631.8 629.9 627.5 625.1 592.5 591.0216 2272+55 226,915 617.4 3/631.1 633.9 631.9 629.4 626.7 594.5 590.5217 2282+75 227,935 618.2 3/631.8 634.8 632.7 630.2 627.5 596.0 593.0

218 2294+45 229,105 619.8 3/633.5 636.9 634.8 632.0 629.2 600.0 598.5219 2303+20 229,980 620.7 634.1 637,8 635.6 632.8 629.9 600.2 596.0220 2312+05 230,865 622.2 635.1 638.8 636.8 634.2 631.2 601.0 597. 5

Pruner Bridge 230,965221 2329+65 232,625 624.4 637.3 640.5 638.6 635.9 632.8 603.8 601.5

222 2341+50 233,810 625.7 638.2 641.5 639.6 636.9 633.9 607.0 604.5223 2349+90 234,650 627.3 639,6 643.3 641.1 638.3 635.3 607.5 601.5224 2363+15 235,975 630.2 641.8 645.5 643.4 640.6 637.8 610.7 603.5225 2380+25 237,685 634.5 644.2 647.8 645.6 643.1 640.7 619.6 614.5226 23901-15 238,675 637.0 647.1 651.4 648.7 645.8 643.4 620.2 613.0

227 2402+80 239,940 639.6 648.8 652.9 650.4 647,8 645.6 621.1 618.5228 2411+45 240,805 641.0 650.0 654.0 651.4 649.0 647.0 621.2 619.0229 2417+45 241,405 641.7 650.6 654.6 652.0 649.6 647.7 622.0 620.0230 2422+55 241,915 642.0 651.0 655.0 652.4 650.0 648.0 622.5 618.5231 24354-65 243,225 642.9 652.0 656.0 653.4 651.0 649.0 625.4 621.5

232 2445+25 244,185 643.6 652.7 656.7 654.1 651.7 649.6 626.6 623.5233 2461+15 245,775 645.4 654.5 658.3 655.9 653.5 651.4 627.6 621.5

Cow Creek 245,830234 2469+15 246,575 646.4 655.4 659.2 656.8 654.4 652.3 634.1 632.0235 2480+10 247,670 648.0 657.3 661.8 - 658.8 656.1 654.0 634.2 630.0

236 24904-10 248,670 649.1 658.1 662.7 659.6 656.8 654.7 635.6 634.0237 2498+10 249,470 651.1 660.8 665.4 662.2 659.4 657.2 637.7 636.0238 2505+15 250,175 652.3 662.5 667.2 664.0 661.0 658.7 637.8 631.0239 2520+75 251,735 654.2 664.0 668.7 665.4 662.5 660.2 640.5 636.0240 2530+15 252,675 655.5 665.6 670.7 667.2 664.0 661.7 642.2 636.0

241 2542+70 253,930 657.2 666.7 671.7 668.2 665.1 662.8 649.1 648.0242 2561+75 255,835 660.7 669.8 674.4 671.3 668.3 666.0 649.2 643.0243 2575+80 257,240 664.9 675.9 679.8 677.2 674.2 671.7 649.4 640.5244 2588+75 258,535 668.4 679.7 684.2 681.0 678.1 675.9 650.2 649.0245 2601+05 259,765 670.9 682.2 686.8 683.6 680.8 678.6 651:2 644.0

246 2612+85 260,945 673.7 684.7 689.4 686.1 683.3 680.9 658.9 658.0247 2621+20 261,780 675.3 685.8 690.6 687.3 684.3 681.9 660.8 659.5248 2633+50 263,010 677.6 687.4 692.2 688.8 685.8 683.6 666.6 658.5249 2643+00 263,960 679.0 689.0 694.2 690.6 687.4 685.2 666.8 661.0250 2653+75 265,035 681.6 690.9 695.4 692.1 689.6 687.7 667.0 664.5

251 2658+90 265,550 682.7 692.1 696.3 693.3 691.0 689.1 668.0 665.0252 2666+90 266,350 684.4 693.5 697.4 694.6 692.4 690.6 670.8 669.0

Canyon Creek 266,550253 2671+60 266,820 685.4 694.0 697.8 695.7 693.0 691.3 672.0 670.5254 2679+10 267,570 687.1 696.1 699.8 69 7.2 695.0 693.2 672.1 669.5255 2699+10 269,570 691.2 700.8 704.6 701.9 699.4 697.4 679.6 678.0

Footnotes at end of table. 32

1/ Identification number on photogrammetric slap.

2/ Adjusted for storage in proposed Days Creek Lake.

3/ Profile revised April 1973.

Table 7. --Revised profile elevations for the South Umpqua River--Continued

33

Station

Report Mapreference referenceL'

Distance -stream from

mouth(feet)

lOO-yearflood

(adjusted)L/

December1964

flood

Elevation in

500-yearflood

feet above

100-yearflood

mean sea level

25-year 10-yearflood flood

Lowwater Thalweg

256 2703+40 270,000 692.0 701.4 705.4 702.6 700.0 697.8 679.8 676.5257 27201-70 271,730 697.3 704.4 708.5 705.6 703.2 702.0 681.2 679.0258 2728+45 272,505 698.0 705.2 709.2 706.4 704.0 702.6 685.5 684.0259 2744+30 274,090 699.4 707.0 710.9 708.1 705.8 704.3 685.6 683.0260 2766+35 276,295 701.7 710.3 714.0 711.4 709.0 707.2 685.8 684.0

261 27751-95 277,255 703.3 712.7 716.0 713.6 711.3 709.6 686.7 684.5262 2786+90 278,350 705.4 715.6 719.2 716.7 714.2 712.2 690.7 688.5263 2801+45 279,805 708.6 717.1 720.8 718.3 716.0 714.0 699.7 699.0264 2813+10 280,970 711.8 718.7 722.2 719.8 717.5 715.8 701.5 700.0265 2825+95 282,255 714.0 721.3 724.6 722.3 720.2 718.5 702.2 700.0

266 28401-30 283,690 716.2 725.0 728.3 726.0 723.6 721.5 702.3 700.5267 2849+45 284,605 717.7 726.6 730.3 727.6 725.2 723.2 703.0 701.5268 2858+85 285,545 721.2 730.7 734.1 731.8 729.2 727.0 704.8 703.0

Dec ember

Table 8.--Revised profile elevations for the North IJmpqua River. mouth to Winchester DaisY

1/ Supersedes table 8 in Part 1, 1972, because of new frequency analysis.2/ Identification number on photograimsetric map.3/ Thalweg, low point in channel.

34

Station

Cross Map

section referenceí


mouth(feet>

1964flood


500-year 100-year 25-year [0-year

flood flood flood floodLowwater ThalwegV

1 4+00 100 400.6 404.7 401.5 398.3 395.3 363.4 360.4

2 18+35 1,535 401.5 405.5 402.1 398.8 395.6 363.8 360.0

3 29+45 2,645 402.5 406.2 402.7 399.3 395.8 364.2 359.0

4 42+05 3,905 403.3 406.9 403.5 399.8 396.0 366.8 361.0

5 57+25 5,425 404.5 407.8 404.4 400.4 396.4 367.2 363.0

6 63+65 6,065 405.0 408.2 404.7 400.7 396.6 375.2 370.5

7 77+90 7,490 406.0 409.0 405.5 401.2 396.8 375.3 370.2

8 89+85 8,685 406.8 409.7 406.1 401.7 397.2 375.4 369.0

Caging statio,n 3195 9,250 407.2 410.0 406.5 402.0 397.5 375.4 --

'9, 10 99+50 9,650 408.3 411.2 407.7 403.0 398.2 375.4 367.4

Brown's Bridge -- 9,650

11 105+00 10,200 409.7 412.8 409.0 404.1 399.2 375.4 366.0

12 113+45 11,045 410.5 414.0 409.9 405.0 400.0 375.5 363.3

13 124+05 12,105 412.3 415.6 411.7 406.8 402.2 380.3 375.5

14 135+95 13,295 413.7 416.9 413.0 408.5 404.6 382.4 373.0

15 159+30 15,630 416.3 419.9 415.6 411.1 407.4 389.0 376.0

16 170+35 16,735 417.9 421.6 417.2 412.6 409.1 389.7 382.2

17 1794-40 17,640 419.9 423.5 419.2 414.8 411.5 390.3 384.8

18 188+85 18,585 421.8 425.4 421.1 416.7 413.3 392.2 386.2

19 203+35 20,035 423.7 427.1 423.0 418.6 415.4 394.3 383.3

20 212+50 20,950 425.2 428.8 424.4 420.0 416.6 394.8 384.0

21 222+60 21,960 426.7 430.6 425.9 421.3 417.8 397.2 391.7

22 232+75 22,975 428.0 432.1 427.2 422.5 419.1 397.8 394.0

23 242+75 23,975 430.8 435.0 429.9 425.1 421.7 403.2 397.7

24 251+05 24,805 432.0 436.0 431.2 426.6 423.4 405.1 400.0

Sutherlin Creek -- 24,900

25 264+35 26,135 433.6 437.4 432.9 428.7 425.7 405.7 399.0

26 276+30 27,330 435.3 438.9 434.5 430.3 427.3 406.6 401.5

27 286+75 28,375 436.3 439.9 435.6 431.5 428.5 407.7 401.2

28 298+65 29,565 438.3 442.2 437.6 432.9 429.9 408.1 400.0

29 307+15 30,415 438.3 442.2 437.6 433.7 430.5 408.7 403.7

30 322+00 31,900 439.9 444.3 439.2 435.3 432.3 411.6 407.0

31 333+80 33,080 442.4 444.8 441.6 437.3 434.2 413.9 406.4

32 3454-30 34,230 445.7 449.2 444.9 440.3 437.1 417.1 409.0

33 353+95 35,095 447.4 450.7 446.7 442.3 439.1 419.5 413.5

Southern Pacific Railroadbridge -- 35,250

Highway 1-5bridge 35,680

Highway 99bridge 35,780

34 3651-20 36,220 448.3 451.6 447.6 443.5 440.4 421.5 416.5

WinchesterDam 36,460

20

W Cnek

/A ®\__// ® I

SCOTTS8URG /W.

4--pc

eo:

2000 4000

Thweg

TION

3r95 r Go2in stoflon

Cross sections

End ot profile Shown

000 2010SCALE, IN FEET

2,000 4,000 6,000

ISTANCE UPSTREAM FROM SCOTTSBURG BR DGE, N FEET

F GURE 7. - - Profi es of Umpqua R ver

EXPLAN4

- 500-year flOOd- 100-year flood

964 flood- 25-year flood o

0-year flood- Low waferomrted

®

\ ®Creed

CE UPSTREAM

FIGURE 8.- -P

*ornee/y &eek

40

60

0

21

NATION

Cross scfons

w--O End of Erolile shown

__0,20?0SCALE, IN FtET

20

28,000 30,000 32,000 34,000

8,000 20,000 22,000

DSTAN FROM SCOTTSBURG BRDGE, N FEET

rofiles of Umpqua River

EXPLA

500-year flood100-year flood964 flood

25-year flood0-year floodLow waterTOolweg

80

I0

NATION

W Cross sectons

o..o rrd o profile SFrOwfl

CDO 20?OSCALE IN FEET

38,000 .ø40,000 42,000 48,000 50,000

ar"rr' r-.-

-r -

-___

ii

60

20

D STANCE UPSTREAM FROM SCOTTSBURG BR DGE, N FEET

34,000 36,000F GURE 9 - - Prof es of Umpqua R ver

EXPLA

500-year flood100-year flood

40 964 flood25-year flood0-year floodLow waterThoiweg

100

2

E)PLANATt0N

500-year flood- -. - - 100-year flood

19S4 flood- - 25-year flood

0-year flood- - - - Loo water

Thalweg

Cross Oecti005

a--o End of profIle sf.own

0 000 2000

SCALE, IN FEET

-- - _ - - --

T 44 9 I

- -_____ -

- -

--_____- _____/.

DI

64,000

I

66,000 68,00

54,00052,000 56,000

(jJ

-JLU>uJ-J

LU

80

LU

LU

H 60LULUU-

zz0>LU 40-JLU

ANCE UPSTREAM FROM SCOTTSBURG BR DGE, N FEET

F GURE 0-- Profi es of Ump qua R ver

EXPLANATION

50Oyeor flood-. - - 100-ynor flood- -- ---. 964 flood

- - 25-poOr flood0-year flood

- - - Low wolOrTfloweç

Cross saclons

o---o End of profIle shown

0 000 20001 I

SCALE, IN FEET

-. -

- - - -

=

- - -- - - - - - - - -- -

4 ©i

649, 444 4

- - - - - - - - --_- -- - --_- 00 80 82,000

I I L ii

84,000

00

80

60

78,0 ,000


F GURE --Prof es of Umpqua R ver

68,000 70,000 72,000

4 4

0 0SI

EXPLANATION

500.yeor flood- - - - 00-year flood

964 flood- - 25-year flood

lO-yrOr flood- - - - Lao odler

Trlarq

Cross sections

e--o End of profile shown

Go020f0

SCALE, !N FEET

100

60

86,000 88,000 90,000 92,000 94,000 96,000 98,000 00,000 02,000

0


F GURE 12.-- Profiles of Umpqua River

ELKTO

_0UOQ -

0

- - - - - - - -- -- - --4 4

III

I

4 -

- - - - - - - - - - - --

DI I

-Jw>uJ-J

(/)

zw

w 00

aD

I-uJI-uLL

z- 80z

08,000 0,000 2,000/

lANCE UPSTREAM FROM SCOTTSBURG BR DOE, N FEET

F GURE 13.- -Profiles of Umpqua River

6

o

-.-._._._._._._._._._.---L::-

- - -___- -- - - - - - - - - - -- -

0 0 o

500

EXPLAUAflON

floodflood 2i Onos sec?lons

-_ End of profile shown

? co 20?O

-yeaf- - - - 00-year- - -. 964 foo

-- - 25-year flood0-year flood- - - SCALE, N FEET

U4,000 24,000 26,000 28,000 30,

20

00

80

I

20,000 22,000


F GURE 14.-- Profiles of Umpquc River

40

it 7I

INATION

Cross sections

I2

60 ,30,000 132,000

34,000 40,000 I 44,000 146,000

COTTSBURG

Umpquo Rive

136,000 138,000 42,000

D STANCE UPSTREAM FROM S BR DGE, IN FEET

F GURE 15--Profiles of r

EXPLA


25-year flood10-year floodLow waterThalweg

140

120

00

EXPLANATION

500-year flood 3I95Gaging station

100-year flood964 flood (_) Cross sections

25-year flood n--n End of profile shown0-year hoodLow waterThaiweg

58,000 60000

DSTANCE FROM SCOTTSBURG BRDGE, N FEET

F rofiles of Umpquo River

01

10064,000 66,000 68,000

70,000

UPSTREAM FR

172,000

100$ Cree*

74,000 I76,000

N FEET

EXPLANATION

500-year flood-. - - - 100-year flood Cross sections

1964 flood-- - 25-year flood End of pmAle slSown

JO-year flood- - - - Low water ? 10(0 29)0

ThaIweg SCALE, IN FEET

178,000

80

60

40

20

DSTANCE OM SCOTTSBURG BRDGE

FGURE 7--Profies of Umpqua Rver

82,000 84,000 86,000 88,000 90,000

FROM SCOTTS

rofiles of Umpqu

EXPLANATION

500-year flood- - - - 00-year flood

964 flood- - - 25-year flood

0-year flood- - - Low water

Tha?we

Croos sectoes

o.o En4 of oflle shows

000 201 1

SCALE, IN FEET

92,000 94,000 96,000 98,000

D STANCE UPSTREAM BURG BR DGE, N FEET

F GURE i a- - p a River

0 +

'V

0 0 0

EXPLANATfON

500year flood-. - - - 00-year flood

964 flOod- - 25-year flood

l0yCar flood- - - - LOW wafer

TIoIweç

C,oss sccfior,s

o----o fled of profIle sf,own

000 20?0SCALE, IN FEET

C C 0

20202,000

DISTANCE

200

80

60

40

98,000 200,000

204,000 206,000 208,000 2 0,000/UPSTREAM FROM SCOTTSBURG BR OGE, N FEET

FGURE 9--Profies of Umpqua Rver

/

0 0 0 0

KeI4ogBrld,e

'ii

NATION

Cross seclions

--o End of profile r?ow

9 KOj2O?OSCALE, IN FEET

0

220

80

60

40

-

216,000

218,000

230,000 232,000224,000 228,000

ROM SCOTTSB

222,0c50 226,000

DSTANCE UPSTREAMF URG BRIDGE, N FEET

220,000FGURE 2Q--Profies of Umpquo Rver

EXPLA

500-year. flood00-year flood964 flood


Low waterThalweg

n

! *!

-UNATION

() Cross sections

---o End 01 profIle shown

COO 29)0

SCALE, IN FEET

160 --232,00 234,000 236,000 244 000 246,000 248,000

Jw

220Jw(1)

z

w 200

I-EXPLA

L.L...500-year floodz 100-year flood- 180 1964 flood

Z 25-year flood

Q 10-year IoodLow waterThaiweg

uJJw

238,000 240,000 242,000


F GURE 2 - - Profi es of Umpqua R ver

240

200

80

- ----------

Crosc sector$

o.o End & profile f1own

0 000 20

5(A E, IN FEET

4 + 4 4 4

250,000 252,000 256,000 258,000 260,000 262,00 266,000254,000 264,000

DSTANCE UPSTREAM FROM SCOTTSBURG BRDGE, N FEET

F GURE 22 - Profiles of Umpqua River

EXPLA

CO-year floodlOO-yeor flood1964 flood25-year flood10-year floodLow waterThalweg

260

180

LitI Cw'yr

BoliwBr

0

k

0

4

0EXPLANATION

4 0 4

!

V.'.

ii270 00.: 274,000 276,000

REAM FROM COTTSBURG I

I 23--Profes of Umpqua Rve

280,000 282,000

flood

Cross eCI,orrs

o.o End of profile shown

0 COO 29)0

500_year- - -. - 100-year flood

1964 flood- - 5-yeor flood

0-year flood- - - Low wotr0 0

- Tholweg SCALE, IN FEET

272,000 278,000

-JLu>I-u-J

Ui240

01 zLU

Ui

F- 220UiUIU-

zz

200

DISTANCE UPST S BRDGE, IN FEET

266,000 268,000FGURE r

200

I 4 4 4

U.

I ------ilUWi

EXPLANATION

5r0.year flood- - 00-year flood

I%4 flood- -- - 25-year flood

10-year floodLow wolerTEolereS

Cross sections

o--o End of profile Spawn

0 lOGOI 20?O

SCALE, 01 FEET

Lost Ce'eefr

90,000 292,000

UPSTRE4M FROM SCOTTS

298,000 300,000

284,000 286,000 288, OOCGURE 24--Profiles of Umpqu

u-i

260J

u-ici)

z4uJ

u-i 240>04wu-iU-

z220z0

>U-i

uJ

2 294,000 296,000

DSTANCE BURG BRIDGE, N FEET

Fl a River

____

Crass sect ens

____?05iiF

L--___- -

___ ___

- -

___

- - -

___ ___

- -- - - - - - -

4o4

- _____ - - - -_

-

316,000

MOTTG300 000 302,000 304,000

25-- Profiles of Umpqua Rive

-JLii

280-J

Liici)

zLii

260>0

I-LiiLiiU-

z240z0

>w-JUJ

220306,000 312,000

DISTANCE UPST BR DGE, IN FEET

FGURE

3 8,000 320,000 322, OOC

EXPLAN#TION

5OOyeor fIo- - - - - - IOO-yer fiood

964 lood- - - 25-yeor flood

IO-eo flood- - - - Low water

Thaiweg

Cross sections

w----o End of protHe shown

000 20?0SCALE, IN FEET

332,000 334,000

-JLJJ

>uJ-J

4LU(I-)

(J Z

uJ>04F-LULUU-

zz0

>LU-JLU

,000 326,000 328,000


F GURE 26 - Profiles of Ump qua River

EXPLANATION

500-year flood- - - - IOU-year flood

954 flood- - 25-year flood

10-year flood- - - - Low eater

Tholweg

Cross SOCti000

o End of pfoti!e shown

)Oi2O?oSCALE, IN FEET

zco

280

38,000 340,000 348,000 350,000 352,000342,000 344,000 346,000

DSTANCE UPSTREAM FROM SCOTTSBURG BRIDGE, N FEET

F GURE 27-- Profi es of Ump qua R ver

-JLU>LU-J

LUCr)

()ZLU

LU>0

I-LULUCL

zz0>LU-JLU

260336,O00 ...___-3

340

320

300

280

II

\W)1MMIII //.

4Qo flQQ

C'°yeQ'

EEELj0f

'iN:E

----------I---5--i',I_-

- -354,000 356,000 366,000 \ 368,000 370,000 372,000

-JtjJ>w-J

UJ

358 000 360 000 362 000 364 000/0 STANCE UPSTREAM FROM SCOTTSBURG BRIDGE, N FEET

F GURE 28--Prof es of Umpquo R ver

480

460

440

420

0 --/ --------.

490-

WINCI-4ESTER

E X FL AN ATf ON

500-year f rood- - - - - tOO_yeor ffSOO

g64 I100d- - 25-year Food

CO-year Food___:UCross sectoos

a.o End of profile Shown

0 lOGOI I

SCALE IN FEET

20p0

UPSTREAM FROM

IGURE 29.- - Profiles of

0 2000 4000 8000 4,000 16P006000 0,000 t 2,000

DSTANCE WINCHESTER DAM, N FEET

F North Umpqua River

520

500

480

460

-

- -__.

4

P"..8,000 'W' 22,000 24,000

UPSTREAM

IGURE 30--P

4 4

/cIL EXPLANATION

5OO-yer tIooO- - - - IOOyeor flood- - - - - 964 flood- - - 25-year flood

0-year flood- - - - Low wOfer

TfaIwe

Cross oeCtor's

-o End of OrofiJ shown

1)00 20?OSCALE, IN FEET

26 000 28 000 30 000 32 000 34 000

0'

DSTANCE FROM WINCHESTER DAM, N FEET

F rofiles of North Umpqua River

WINCHESTER

North Umpqua

EXPLANATION

500-year ftaod- - - - - 00-year flood

964 tood- - 25-year flood

0-year flood- - - - Low water

Ttrotweq

Cross seCtows

°-.--- Erd of DeoIiIe showrr

00090SCALE IN EEET

44 000 48 000 50 000

01

34,000 36,000

40,000 42,000 46,000

DSTANCE UPSTREAM FROM DAM, IN FEET

F GURE 31.-- Profiles of River

® ®1964 and 00 year flood combined

.. 4 4 4 4

shownyrfdI 54,000 58,000 64,000

UPSTREAM

0 1000 2000I I I

SCALE, IN FEET

I'

66,000

-Jw

580-J

uJ(I)

w

LU 560>0

I-uJuJLL

z- 54Cz0

>tJ-JLU

56,000 60,000 62,000

D STANCE FROM WINCHESTER DAM, IN FEET

52,000Fl rofiles of North Umpqua River

560

EXPLANATION

5CC-year flood1l00_yeoe flood

- - - - 'L1964 flood- - 25-year flood

0-year flood- - - - Low water

Teal WC9

Cross sections

o. - End of profile shown

pO12O0SCAII, IN FEET

-_ _..........:..

..........4 4 -

¶ ¶' ________11_ppp-__ Ii70,000 72,000 82,000 84,000

-JIii

620-J

uJU)

zLU

600>0

I-UiUiUi

z580

0>LU-JUJ

68,000

74,000 76,000 78,000 80,000

DSTANCE UPSTREAM FROM WINCHESTER DAM, N FEET

F GURE 33 - Profiles of North Umpqua River

86,000IGURE 34--P

o0 0 0

S

® ®®o-

® Cross sections

flood o.---o End of profile stownflood

I I

_____(0d25_yecrlOyeorLow

________

SCALE, nj FEET

----T-.-;::----

4 4

T----- -T T ------- 4 - _:- 0 0

------pA

88,000 90,000 94,000 96,000 98,000 00,000 02, CX

-J

660-J

uJcr

zuJ

j 640>0

I-wLiJLi

z620z

DSTANCE FROM WINCHESTER DAM, N FEET


700

________-- 1;5C0 eo flood

Cross

flood n--o End of profile shownflood

oo?er 0 1000 2000

- - -- - - 25-year

l0-yeor- - - - Low,' .......

Tholweg SCALE, IN FEET

- - -....

...... 0

....................I -- -

OU 4auu A

--40

106,000 II 114,000 116,000 118,000

UPSTREAM

IGURE 35- -P

-JLU>LU-J

LU

680

LU

LU>0

I- 660LULU.U-

zz0

640-JLU

08,000 0,000 2,000

D STANCE FROM WINCHESTER DAM, N FEET


000 2OO

SCALE, S4 FEET

20,000 22000 24,000 26,0(X) 28,000 30,000 32,000 I3 000 36, 000

EXPLANAT ON

500-year flood1-lO0-year flood\1964 flood

- - - 25-year floodLU 10-year flood

720 - - - - Low water_J Tholweg

LUc-n

zLJ

Lii 700

00

I-LULUU-

z- 68Cz0

>LUJLU

() Cross secf ons


F GURE, 36 - Profiles of North Umpqua River

760

0

0EXPLANATION

floodflood Cross secIors

o.o End of profile Shw

2000

500-yeor,-IOO-yeor

I964 flood- - 25-yecr flood- -

- Thwe SCALEJN FEET

--

44 ----- - AR--

4 A32,000 136,000

-JLJ>uJ-J

uJ

740

w

uJ>0

F- 720uJuJU-

z

0

700-JUi

38,000 40,000 42000'4'


F GURE 37--Profiles of North Umpqua River

44,000

Left bank80

60

440

420CROSS SECTION

500

n80

460

440

420CROSS SECTION

0

0

0

R.gh? bank

a

r

/

20

0

C'

0

U

20CROSS 13

90Left bank

60

0

420CROSS SECTION

00

80

U

Li

420CROSS SECTION

U

0

0

0

20

U

0

0

0

U

2

5

Rgb OOnb

8

H

00

80

460

440

440

420CROSs SECTION

520

9

0 8

12CROSS SECTION

50

48

46

-744

42Oo SECTION

50 50

\48 48

46 46

44 44

420ROSS SECTION 10 CROSS SECTION 11

5 54

50 52

48 50

46 48

44 46

50

48

46

411

SECTION

66

CROSS SECTION

48

16

EXPLANATION

500-year flood100-year f load

- 964 flood25-year flood10-year floodLow wafer

4 4 48

4 4 4

44 44

5 50

4 48

46 46

44 44

42CROSS SECTION

4SECTION CROSS SECTION

HORIZONTAL SCALE, IN FEET

FIGURE 38--North Umpqua River cross-sections

5

(I4

Left

0

80

0

20

00

0

0

0

0

20

00

80

460CROSS SECTION

00

15

19

21

CROSS SECTION 24

Right bard

00

80

611

3

52

50

48

460

0

20

0

0

460

Left bank

16

Right bonk

U ii4CROSS SECTION 19

Left bark520

0

83

460

CROSS SECTION

0

ci

0

60

0

60CROSS SECTION 23

0

0

80

17

Right bank

-

50

520

500

480

SECTION CROSS SECTION 28

I60


67

5 52

5 5 50

4 4 4

46 4

CROSS SECTION CROSS SECTION

5 52

5 50

48 48

46

44Jw CROSS SECTION CROSS SECTION 20>uJ_J

w

54 54 4

(I_)

w

52

uJ

m

5 50

48

w

zCROSS SECTION 22

z 54 54 54

uJ

52

5

52

50

52

50

48 48CROSS SECTION 26

4SECTION 25

54 54

EXPLANATION

500-year flood---.-.-.-.- 100-year flood52 5

1964 flood25-year flood10-year flood50 50Low water

48 48I

800


4

540Lgtt bank

520

500

480

0

40

0

0

80

00

Right bank

29

0

480CRQS SECTION

32

35

460CROSS SECTION

8

00

0LetI honk

0

0

0

U

0

Right bank

30

39

\

20

Left bank

0

480CROSS SECTION 31

60

U

0

0

20

00

80

Right bank

20 20

00 00

800CROSS

68

CROSS SECTION

56

5

52

50

4CROSS SECTION

56

54

52

5

58

56

54

52

CROSS SECTION

58

56

54

52

38

54

52

50

48

56

54

5

5

54

52

50

5

56

54

52

58

56

54

52

CROSS SECTION

CROSS SECTION

CROSS SECTION

\

33

36

54

5

50

5

54

5

5

48SECTION 34

56

54

5

5

CROSS SECTION 37

58

I56

54 7,

52

500CROSS SECTION 40

EXPLANATION

flood500-year100-year flood1964 flood25year flood10-year floodLow water

0 800 O0

CROSS SECTION 41 CROSS SECTION 42 HORIZONTAL SCALE, IN FEET


60

CROSS

80

60

0

0

500CR05S SECTION 45

2

Fghl bcetk580

560

540

520

Left brnk

/2

20

0

0

0

0CROSS

80

60

U

20

00

/

0

0

0

0

0

U

Rfçht bank

80

60

0

20

44

62

60

58I

El56 /54

52CROSS SECTION 51

EXPLANATION

500-year flood00-year flood1964 flood- 25-year flood10-year floodLow water

0 800 90

CROSS SECTION 52 HORIZONTAL SCALE IN FEET

FIGURE 41 --North Umpqua River cross-Sections

69

CROSS SECTION 46

5

54

CROSS SECTION 49

5

5

54

52

50SECTION 43 500CROSS SECTION

5 58

5 56

54 54

52

-JLU>

58 5

LU

zuJ

56

54 54

LU

52CRQSS SECTION 4?

5CROSS SECTION 48

zzC

6

60

58

56

54

60

58

56

54

SECTION 50

03LOfl biik

80

0

0

520CROSS SECTION 53

20

00

80

540CROSS SECTION

20

560CROSS SECTION 61

20

yr/

I

58

Cornbned wh 100 yecr hOod.

CROSS SECTION 64

Rçh! nk

CROSS SECTION 56

6211

600

500

CROSS SECTION

20

00

a

60CRUSS SECTION

Hood

59

Ccnnbl,ed wh 00 yo ticod,

CROSS SECTION 62

70

85

80

540CROSS SECTION 60

00

8

00

0

0

560

0

0 800 600I I

Cc,nOIrod wdh 00 flood

11

Ccarflodd

0

Coiddnd wdh 00 ye thood

Let? ban Rht bank

80 ---60

HORIZONTOL SCALE, IN FEET

6

5

56

54

62

60

58

56

6

6

5

56

64

6

60

58

66

6'!

C

GO

58

CROSS SECTION 55

Combined with 00 yew

/

6

60

58

56

64

58

66

64

6

6

Combined with 00

60

5

5

54

year

CROSS SECTION 5'!

62

60

58

56

CROSS SECTION 5?

62

6

5

56

64

62

6

5

CROSS SECTION 63

EXPLANATION

500-year flood-. -- -.-. - - 00-year flood- -- 1964 flood


Low water

6

C

58


-

640Left bank

620

600

580

560

0

0

0

0

0CROSS SECTION

00

80

580CROSS SECT

60

0

ON

66

69

60CROSS SECTION 72

75

7

Itt

6c0

Right bankRgh1 bik

0

Left bank Right bank

20

bai

0 08

80

0CROSS SECTION 6? 60CROSS

0

0

580CROSS SECTION 18

0

0

0

00

80

0

0

0

00

80

/

60

0

20

00

80

660

040

020

600

580

0

0

20 20

CO 00

80 80CROSS SECTION 76 CROSS SECTION 77

600'CROSS SECTION 19


EXPLANATION

500-year flood_[ 00-year floodI. 1964 flood

25-year flood10-year floodLow water

0 800


64

62 6

60 6

58 5

CROSS SECTION56 5

SECTION 68

66 66 6

64 64 64

62 62 6

60 6 6


66 66

64 64

62 62

6 6

5CROSS SECTION 73 CROSS SECTION

5

66 66 66

64 64 64

62 6 6

GO 6 6

660

6 0

620

600CR09S SECTION

680

660

640

£2

80

60

0

20

00

0

0

0

0

0

C

0

0

0

I

80

660

6q

620

80

60

20

72

0'

0

600CROSS SECTION 82

£80

£60

60

£20

600'

680Left bak Rigbi boiTh 680Left bor RIçh bank bank RNht bcab

600CROSS SECTION 83

00

600CROSS SECTION 81

6

6

64 4

6

6CROSS SECTION 84

(

FIGURE 44--North Umpquu River cross-sections

6

66

64

62

CROSS SECTION 85

EXPLANATION

500-year floodrIOO-year flood

1964 flood25-year flood10-year floodLow water

800I

1690

HORIZONTAL SCALE. IN FEET

Ui

8 6 62

I-Lii

CROSS SECTION 86 SECTION 87

z68

2066

J64

62

60CROSS SECTION 88

70

68

66

64

62CROSS SECTION 89

0

80

0

0

620

720

700

80

0

4 0

0

TOO

80

80

0

60

0

0LfI bon Right banh

-;________ -

Th.

CROSS SECTION 9

620CROSS SECTION 94

6

66

64

70

68

6

64

620CROSS SECTION 90

70

6

66

64

1 6

CROSS SECTION 91

8 86

H-6

62CROSS SECTION 92

66

64

70


73

EXPLANATION

500-year flood_[ 100-yew flood

I.. 164 flood25-year flood10-year floodLow water

0 800 00I I I I I

HORIZONTAL SCALE, Fr

00Left bark

80

20CROSS

0

0

0

0

0

0

a

8

74

Ri.ht bank 1Left bor*

20

/

Rht ba,,k

0

0

0

62 0

0

0

CROSS SECT tON 98

0

0

0

r

0

0

20

a

a

a

00

80

60

0CROSS

J

CROSS SECTION 97

72

70

68

66

/

CROSS SECTION 101

I

FiGURE 46-- North Umpquo River cross-sections

I

EXPLANATION

500-year flood[100-year floodl 964 flood25-year flood10-year flood

7

6

66

64

6

7

10

68

66

SECTION 95

72

I

S

66

64

70

68

66

64

6CROSS SECTION 96

70

68

66

64

72

7

6

6

CROSS SECTION 99

64

72

SECTION 100

Low water

SIC 90HORIZONTAL SCALE, IN FEET

20

60

0CRQSS SECTION 10?

20

0

20

80

620CROSS SECTION 105

7

CROSS SECTION 108

20

00

60CROSS SECTION 106

0CROSS SECTION 102

0 0

200

0

0 80

00

0 0

)0Left bark Right bk Left txrnk Rht book

90

60

74

7

84CROSS SECTION 109

75


EXPLAI4ATION

500-year flood- f 100-year flood

1964 flood25-year flood

Low water

0 800 1600


7 72

707

6 68

666

64

82CROSS SECTION 103

74 74 74

12 7 7

70 70 7

GO6 88

66 66 66

64CROSS SECTION lOLl

64

ILl 14

7 I

70 70

GO 6

8 66

10

GO

GE

0

80

60CROSS SECTION 110

760

740

120

700

68


0

2

00

0

114

Left bunk740

720

700

680

CROSS SECTION

660

640

RlQht bank

20

00

0CROSS

Left bunk Right bunk74

72

70

6

66

74

7

7

68

660CROSS SECTION

76

74

7

7

68

66SECTION 115

FIGURE 18-- North Umpqua River cross-sections

76

7

74

72

70

68

CROSS SECTION

EXPLANATION

500-year flood[ 00-year floodl 1964 flood

25-year flood10-year floodLow water

800 600


0

0

0

00

80

60CROSS

60

0

0

0

680CROSS SECTtJN 120

60

20


0

0

U

0


0

0

20

00

80

0

CROSS SECTION 117

740

720

20

80

CROSS SECTION 119

60

20

00

80121

760

140

720

100

680


0Left bank Right bank Left bunk Rçh bank

74 74

72 72

70 70

68 68

CROSS SECTION 11666

74

72

7 7

6 6

SECTION 118

7 7

7Lf 7';

72 7'

70 7

7 7

74 7';

7 72

70 70

68 68

76

74

72

70

76

74

7,

7

77

CROSS SECTION

EXPLANATION

500-year floodrIOO-yr floodi 964 flood25-year flood10-year floodLow water

I i 810 l6OCROSS SECTION 125 CROSS SECTION 126 HORIZONTAL 5GALE IN FEET

FIGURE 49--North Urnpqua River cross-sections

740

720

700

680

760

740

720

700


760

70

720

CROSS SECTION 130

bank

20

00

80CR0SS

80

60

0

0

0

680CR0S5 SECTION 134

CROSS SECTION 131

J

L

0

20

00

680CROSS

80

60

0

20

00CROSS

25-year floed-....-..---.-- IO-yecr lcod

La,e:er

780

0

0

20

00

780

760

740

720

80

0

0

20


700

78

80CROSS 80CROSS

780

Right bank60

LO bank Rtght bik

20

00

0CROSS

0

760LMft bw* Ibght bx*

740 /720

700

680127

760

CROSS SECTION

7 7

74 74

7

7

6

760

740

720

700

SECTION 128

7

7

68

76

74

7

7

SECTION 129

CROSS SECTION 139 1-cRIZONTAL SCALE, IN FEET


SECTION 132

7 7

74 7

72 74

70 7

7SECTION 135

7

76 76

74 74

7 7

7 7

6SECTION 136

6SECTION 137

EXPLANJVflON

500-year fcc

_f 100-year flcd

4 L 964 flood

0 600 16C3I I I

20CROSS

-20

Left bach Right bank Left bank61)

40

20

0

CROSS SECTION

CROSS SECTION

Right back Right borh

20

/

206

20 a8 9

80 80 80

60 60 so

40 40 40

20 20 20

0 0 0

20' -2CROSS SECTION

80 80 80

60 60 60

40 40 40

20 20 20

0 0 0

CROSS SECTION CROSS SECTION

80 80 80

60 60 60

40 40 40

20 20 20

0 0 0CROSS SECTION 12

I

79

L

/

FIGURE 51 -- Umpqua River cross-sectionS

CROSS SECTION

- CROSS SECTION

9 I I

1690

HORIZONTAL SCALE IN FEET

60 60Lnft bank

40 40

20 20

0 0

SECTION CROSS SECTION

EXPLANATION

- CROSS SECTION 10 500-year flood100-year flood1964 flood


Low wafer

-220CROSS SECTION 11

Left beak80

60

40

20

0

2CROSS SECTION

80

60

40

20

0

80

60

40

20

0

13

17

0

tght bock

-7-

so

80

00

40

70

U

Left bonk

14

Ri8ht bank

0 800 600I I I

I-RtZONTAL SCALE, IN FEET

CROSS SECTI0N 16

CROSS SECTION 19

80

60

20 /0

CROSS SECTION 18

CROSS SECTION 15

CROSS SECTION

7/

80

60

Ito

20

0CROSS SECTION

I

FIGURE 2 -- IJmpquo River cross-sections

EXPLANATION


- 1964 flood25-year flood0-year flood

Low water

80

60

40

204

0

80

60 I-7

40

0

2CROSS SECTION 20

-20

N

Rq1iI bonk

'I

Left bank

20CROSS

100

Aght bank

-J

Left bank

CROSS SECTION 23

Rght bank

\

L

80 80 80

60 60 60

'tO 40 40

20 20 20

0 0 0

CROSS SECTION 21 SECTION 22-2

80 80

80

60

A 80 80

7T7 60

40 40

20 20

81

I60

80

60

40

60

(

7-J

20

i720 20

CROSS SECTION 240

CROSS SECTION 250

CROSS SECTION 26

0CROSS SECTION 2?

0CROSS SECTION 28

0CROSS SECTION 29

80 80

60 60

'10 40

20 20

0CROSS SECTION 30 CROSS SECTION 31

EXPLANATION


25-year flood0 year flood

Low water

0 800I I

HORIZONTAL SCALE; FEET

FIGURE 53. --LJrnpqia River cross-sections

60 60

40 40

40

20

Left bck00

00

32

00 00

34

00 00

Right bank 001af1 berth

y

Right boric

80

60

40

20

CROSS SECTION 38

FIGURE 54 --Umpquo River cross-secIs

82

EXPLANATION


- 1964 flood25-year flood10-year floodLow water

0 800 600I I


JUi..j

Ui

Ui>

z0

U_I

1

80

60

40

20

0

1

80

60

40

20

1

80

60

40

20

CROSS SECTION

CROSS SECTION

,

1

80

60

40

20

0

1

80

60

'tO

20

0CROSS SECTION

1

80

60

40

20

0CROSS SECTION

CROSS SECTION 37

33

35

CROSS SECTION 36

100

Left bank

00

0

20CROSS SECTION 4;7

00

00

Right bank 00Left ba'J

CROSS

L00

Ri?ht bank

0

7

1 1

80 80

60 60

40 40

20 20

0CROSS SECTION 39

0

:

So 60 60

SECTION 40

FIGURE 55--Umpqua River cross-sections

I


0

1

80

60

40

20

0

80

60

40

CROSS SECTION

CROSS SECTION

41

44

0

1

80

60

'10

20

0

CROSS SECTION

CROSS SECTION

420

45

CROSS SECTION 43

10

80

60

'tO

4620

CROSS SECTION

EXPLANATION



Low water

80

00Lft bark

100

20

00

I!__iiii--

'-V _.

Rr.h bank Left

100-

100

100

80

60

I0

bank

0

00

Fght ban

00

(

0

\

1

80 80

60 60

40 40

20CROSS SECTION '48

20CROSS SECTION 49

20CROSS SECTION 50

10

-:1

1

80 80

60 6060

*0 '40'10

20'20CROSS SECTION 51 CROSS SECTION 52

20CROSS SECTION 53

LU I-J 10

LU

80 80 80zLU

60 60 60

LU

40 40 40 VI-

20CROSS SECTION 54

20CROSS SECTION 55

20CROSS SECTION 56

z1 12

80

z

80 80

60 60

40 '40

20CROSS SECTION 5?

20CROSS SECTION 58

EXPLANATION



Low wafer

I

80016(?0


FIGURE 56-- Umpqua River cross-sections

84

20LEf! bonk

00

20CROSS SECTION

20

00

20

0

20CROSS SECTION

CROSS SECTION 66

0 800 600

60

20 0

00 0

U

0

20

00

0

0

)

Left bank Ribt bank

CROSS SECTION 61

1 12

1 10

80 80

60 60

40

1

10

80

60

40

59

64

80

60

1

1

80

60

40

12

/ /10 / EXPLANATION

CROSS SECTION 63

85

I"/

FIGURE 57 --Umpqua River cross-sections



Low wafer

40

CROSS SECTION

1 12

1 10

80 80

60 60

40 40

20CROSS SECTION 62

12 1

10 1

80 80

60 60

40CROSS SECTION 65

12

10 L

80 r60

40 I

CROSS SECTION 6? CROSS 'SECTION 68 HORIZONTAL SCALE, IN FEET

40CROSS SECTION 69

20

00

0

0

0

Left hank Right hank

00

/

0

00

00

bQr

40CROSS SECTION 74

4"

CROSS SECTION

86

20 20

12

10

80 80

60 60

CROSS SECTION 7040

CROSS SECTION 71

10

80

60


1: 1

80 80

60 60

CROSS SECTION 7540

CROSS SECTION 76

14

12

12

10

80

60

40

r

EXPLANATION


- 1964 flood25-year flood

-.-. -0-year floodLaw water

0 800 600


FIGURE 58.--Umpqua River CrOSS-SeCtiOnS

12

80

60

10

80

60

77

0

0

0

0

00

0

0

0

/

Left bk Right bon3

0

0

C0

U

14

12

10

80

60

0CROSS SECTION 18

14

12

80

60

CROSS SECTION 19

CROSS SECTION 80

14

EXPLANATION

500-year flood12 100-year flood

1964 flood25-year flood

10 10-year floodLow wafer

80 0 800 600I I I I


60

CROSS SECTION 81

FiGURE 59-- Umpquo River crosS-sections

87

14

12

10

80

60

140Left bank

120

100

80

EQ

40

0

0

0

40CROSS SECTION 8?

88

0

0

0

Rht bck

0 800 600

HDRZ0NTAL SCALE, IN FEET

88

140 0

120 1 0

100 0

80

60 N

40CROSS SECTION 85

0

0

140

120

100

80

60

CROSS SECTION 82

JIiJ

40'z CROSS SECTION 83

w14

FIGURE 60 --Umpquo River cross-seclions

14

12

10

80

60

40CROSS SECTION 84

EXPLANATION


- - 964 flood___! 25-year flood

10-year floodLow wafer

-

J

12

/10

80

60

40CROSS SECTION 86

1'I/12

10

80

60

10CROSS SECTION

14

12

-10

80

60

0

0

2

0

Left bGnk

0

0

0

CROSS SECTION 93

i;o

120

100

80

CROSS SECTION 96

0

20

00

89

R bank Left bank40

20

00 '7

0

0

00

Rjh bank

140

120

100

80

60CROSS SECTION 95

0

00

14 1

12 1

10 1

80

60

CROSS SECTION 89

14

10

80

60

40CROSS SECTION 91

80

60

'10

FIGURE 6 -- Umpqua River crosS-sections

CROSS SECTION 90

14

12

80

CROSS SECTION 92

EXPLANATION

500-year flood-. -.- 100-year flood


----. ... 10-year flood

Low water

141'4

12

80 80

60

40CROSS SECTION 94

0 800 0O


Left bank

60

plo

120

00

0

20

00

\

Rqht bonk

0

20

00

00

140

120

100

80

Left bank Right kank

0

0

0

40CROSS SECTION

120

10

80

0

CROSS 9?

90

14

12

80

SECTION60

CROSS SECTION 98

80 /CROSS SECTION 99

14

80

60CROSS SECTION 100

60CROSS SECTION 101

14 14

12

10

80 80

60U

60

102 CROSS SECTION 103

EXPLANATION



Low wafer

I I

8Ij)O 190



140Lett bank

120

10

80

go

40

160

140

120

80

0

\

/

CROSS SECTION 106

160

140

120

100

80

60CROSS SECTION 101

160

140

120

100

80

60CROSS SECTION 108

RhI txa$c

CROSS SECTION 105

0 800 6(X)

010

CROSS SECTION iO#

91

FIGURE 63 --Lpqua River cross-sections

EXPLANATION



Low water

HORIZONTAL SCALE, IN FFET

60Left bank

40

0

0

140

/

120-

100

80

160

140

120

100

80

60

0

20

0

--

16

140

120

100

80

Rigflt bank

0

0

0

0

20

00

---

/

160 60

12

10

80

60CROSS SECTION 109

JwJuJ


uJ

92

14

80

60CROSS SECTION 111

CROSS SECTION 113

\JCROSS SECTION 115


EXPLANATION

500-year flood-. 100-year flood

- 1964 flood-- 25-year flood

0-year floodLow wafer

C 800

HORIZONTAL SCALE, FEET


1 16

14 14

1 12

10 10

80 80

60CROSS SECTION 114

0

1.aU bank

SECTION 116

160

140

120

100

80

160

140

120

100

80CROSS SECTION

118

121

Rgh bank

20

00

Left bank

I

0

CROSS SECTION 117

160

140

120

100

80

60CROSS SECTION 119

Rnht bank

2 C

60

CROSS

16

14

80

CROSS SECTION

CROSS SECTION 120

7

I


93

EXPLANATION



Low wafer

I

800I

1600


16 16

14 14

1

1

80 80

160Lpft bon

140

120

100

0

0

20

00

40

160

140

120

100

Rihl bonk

\

80CROSS SECTION 122

16

I14

1

80CROSS SECTION 123

1z -LiJ

12

Ui

10

I-80 V

U-

60'CROSS SECTION 124z.0

Ui

80CROSS SECTION 125

12

10

80CROSS SECTION 126

FIGURE 66 --U'npqua River cross-sections

94

EXPLANATION

500-year flood100-year flood1964 flood25-year flood10-year flood

Low water


160Left bank

HO

120

100

00

0

0

00

Rjh rk

CROSS SECTION 12$

160 0

100

I- _ __140

120

160

140

120

100

95

60

U

20

00

0

U

0

0

Left bunk

CROSS SECTION 130

Rkght bunk

Ti

0

0

00

80CROSS SECTION 133

14

12

10

80CROSS SECTION 127 80

60CROSS SECTION 128

CROSS SECTION 132

EXPLANATION

500-year flood100-year thod1964 flood25-year flood10-year floodLow wafer

800I

HORIZONThL SCALE, FJ FEET

FIGURE 67-- Umpqua River Cross-seCtions

14

12

80

80

16

14

12

80

16

14

80CROSS SECTION 131

160Lnft bank

14

120

100

60

00

rSO

0

0

0

/

0

80

SD

0

Rçh1 bank

0CROSS

80

60

0

0

0

80

00

0

6

0

U

00

0¼.,

160 80 0

60 U

20

00

0CROSS

0

0

0

0

0

80CROSS SECTION

14

18

16

14

12

10

80CROSS SECTION 141

144

FIGURE 68--Umpquo River cross-sections

96

EXPLANA11ON

500-year flood100-year figod1964 flood25-year flood0-year flood

Low water

0 81?0 l6O


1 16

14

14 12

12 10

10SECTION 142

80CROSS SECTION 143

20

16

1 14

14 12

12 1

10SECTION 1'IS

80CROSS SECTION 146

16

\ y14

10

80 'CROSS SECTION 134 CROSS SECTION 13580

CROSS SECTION 136

1 1 1 18

1 14 1 1

12 12 14 14

1 10 12 12

80 80 10 1

60CROSS SECTION 13?

60CROSS SECTION 138

80CROSS SECTION 139

80CROSS SECTION 140

0

0

0

0

20

80

CROSS SECTION

18&

CROSS

0

40

20

00CROSS SECTION 158

80

0

0

20

00CROSS

97

60

0

0

0CROSS

180

160

140

120

10

0

80

6

0

0

180

160

140

120

100CROSS

Lnft bank Right bank

U

0

/

180

160

00CROSS 100CROSS

180

SECTION 148

160

140

120

100

140

120

100

Lnf bank Rgh bank0 80

60

0

Lef I bank R,t bank

0

0

20

0

18

16

14

12

SECTION 147 CROSS SECTION 149

20

14

12

80 1001150 CROSS SECTION 151 CROSS SECTION 152

16

14

12

SECTION 159

FIGURE 69 --U-npqua River cross-sections

I I I

1600

18

16

14

1

10

16

1

1

SECTION 156

16

14

18

14

12

10SECTION 157

0I

EXPLANATION

500-year fk)od100-year flaod1964 flood25-year flood10-year flood

Low water

800I I I

HORIZONThL '1Q41 F, IN FEET

18 1

16 1

14 14

1 12



8

60

0

0

80

60

0

bank Riqht bonk

0

CROSS

'20CROSS SECTION 163

bcbac

20

00

00

80

RhI bank Let I bank220

0

80

60

0

20

Raht br,b

220

200

180

160


00

80

60

140

U

0

120 00

/-

220

200

180

lEo

140

120

0

0

0

0

0

14

z12

CROSS SECTION 165 CROSS SECTION 166 CROSS SECTION 167

20

18

16

14

12CROSS SECTION 168

/2

1

1

14

SECTION 169

FIGURE 70-- Umpquo River CrOSS-SeCtiOnS

98

EXPLANATION

500-year flood-. - -.- 100-year flood

1964 flood25-year flood10-year flood

Low water


uJ_j

uJ(I)zUi

UJ>

I-UJ

20

1

1

14

12

22

20

1

1

14

SECTION 160

2

18

16

14

1

1CROSS SECTION

22

2

1

16

14

161

20

1

1

14

2

CROSS SECTION 162

0

0

60

0

20

0

00

0

0

40

20

00

80

so

0

SECTION 173

200

180

100

200

180

160

140

120

I

140

120CR0S5 SECTION 1??

0

00

80

0

0

20

200

180

160

140

120

200

180

160

10

120

0

60

0

Left bank0

R8hI bank200

180

160

140

La1 bank Ri9hf bank200

180

'so

140

120

Lef I ba,k


'I

CROSS SECTION 175

t j-i

CROSS SECTION 178

180

EXPLANATION

500-year flood.- 100-year flood- 1964 flood

25-year flood10-year floodLow wafer

0 800 0OI I I


FIGURE 71 -- Umpqua River cross-sections

99

20

18

14


2

iLl

_JLiJ

CROSS SECTION 174

>

uJ

20

w

18

1

Ui

14

H-Ui

1CROSS SECTION 176

z22 22

02

LU 181

16 16

1 14

1

CROSS SECTION 1791

CROSS SECTION

220Lef I bank

200

180

160

140


220

00

80

60

186

220

200

180

160

140

Rnht ba,k

220

200

180

160

0

LeN bank20

00

0

60

0

20



0

0

80

60

0

TTEEI

Ri8ht bank

220

200

180

160

140


\

"F0

0

0CROSS SECTION

22

20

18

16

14CROSS SECTION 187

14

2

2

18

1

jLJ

CROSS SECTION 182

2

1

14

1SECTION 183

100

FIGURE 72 --LJmpqua River cross-sections

22

20

14CROSS SECTION 188

EXPLANATION


25-year floodlU-year floodLow water

I 90 I

90HORIZONTAL SCALE, IN FEET

220

00

80

60


220

200

180

160

0

0

0

20

0

220

200

180

160

140

Left bank


RIgb bank

0

0

0

80

60

I

0

a

0

0

0

60

0CROSS SECTION 195

220

200

0CROSS


180

160


Right kinkLef I bank Righ? bark Left bank220 220

200 200

180 180

160 160

140 140


2

1

1

14

20

18

16

0CROSS SECTION 196

2 22 22

20 20 20

18 18 18

16 /lii

SECTION 19914

CROSS SECTION 200

CROSS SECTION 201

22

20

18

16


I0I


1'10CROSS SECTION 19'l 14

22

22

EXPLANATION20 §00 year flood

00-year flood- 964 flood


Low wafer

0 800 600


0

0

80

60

20

00

80

60

40

0

20

00

180

60

0

0

0

U

80

60

Left bank

U14CROSS SECTION 203

240

220

200

180

160

Right bank Left bank240

240

220

200

180

160

102

220

200

too

160

140

U

0

0

0

0

0

Rih bank

p

/

0 800 600I I

24

22

20

204

r206


24

22EXPLANATION

500-year flood20 00-year flood


CROSS SECTION 209HORIZONTAL SCALE, IN FEET

CROSS SECTION 210


w

_J

LU

LU

>

LULUU-

zz

24

2

2

1

1

1

24

2

CROSS SECTION 205

CROSS SECTION

24

22

20

18

16

14CROSS SECTION

24Left bon

22

20

0

CROSS SECTION 211

00

80

60

\

7/

/

214


Right honk Lplt bark

240

220

200

180

160CROSS

80

60

0

20

00

80

0

0CROSS

Right bank

240

220

200

180


0

00

80

60

0

0

0

80

60

0

80

6 0

r

24

22

2

1CROSS SECTION 217

24

22

20

1CROSS SECTION 212

-

/

214

2

2

16

14

SECTION 218

FIGURE 75 -- Umpqua River CrOSS-SeCtiOnS

03

EXPLANATION



zLu

Lu

z

18

24

22

2

1

24

22

20

1

2

22

20

CROSS SECTION

CROSS SECTION

213

0 800 00I I I

HORIZONTAL SCALE, FEET

SECTION 218

Left bon12'0

220

200

180

060

240

220

200

180

160

260

240

220

200

180

- 16

260

240

220

200

180

160CROSS

240

220

200

180

160

0'

RQht bti¼

260'

20'

80

60CROSS

60

20

00

80

60

Left bank Ri9ht beak240

220 1 IL -

20'

180 ii240

220

200

180

160CROSS SCTI0N 225

260

240

220

200

180

Left bank240

220

200

180

160

Rbt bank

ii16CROSS SECTION 228

26

240

22

20

18

16

CROSS SECTION 226

SECTION 229


04

CROSS SECTION 231

EXPLANAflON

50Oyeor flood00-year flood1964 flood


Low wafer

0 80 II6soHORIZONTAL SCALE, IN FEET

CROSS SECTION 220 CROSS SECTION 221. CROSS SECTION 222

CROSS SECTION 223 CROSS SECTION 224

2q

2

20

SECTION 227

2

24 -'2

2

1CROSS SECTION 230

20

00

80

60

60

0

0

0

80

60

Left bank0

Right bank

IT!

00

80

260

240

220

200

'80CROSS SECTION 241

20

00

80

260

2.0

220

200

180

Left bank0

C

RihI bank 260Lett bank

240

220

200

180CR09S

260

240

220

200

260

240

220

bah? bank

I180CR0S5

200CROSS

260

240

220

203

260

240

220

200


60

0

0

0

80

CROSS SECTION 2142


EXPLANATION



Low water


LU

j

uJ

LU

LU>

2

24

22

20

1

26

24

22

CROSS SECTION

CROSS SECTION

232

235

CROSS SECTION

2

24

233 SECTION

CROSS SECTION

2314

23?

26 26

24 24

2

2 2

LiiCROSS SECTION 238 CROSS SECTION 239 SECTION 2140

JLU

SECTION 2143

260

240

220

200

180CROSS SECTION 2'14

260

2

00

80CROSS

280

260

240

220

200

Lf bcnk

0

253

RII bonk

0

0

00

80CROSS

U

0

0

0

00

Left bok0

Rht book

80

6

0CROSS SECTION 254

106

260Left book

240

220

200


282

80

bO

0

20

00

80

60

20

°CROSS SECTION 249

80

0

0

0

00

Rht bk

K 2

I

SECTION 255

280 280

0

0

0

00

180CR0S5 SECTION 250 °CROSS

CROSS SECTION

EXPLANATION



Low water

0 800 1600I I I I


FIGURE 78 --Umpquo River cross-secons

252

JUi-J

UJ

zUi

UJ>

24

2

2

26

24

22

20

SECTION 24?

26

214

22

2

28

26

24

22

2

26

24

22

2

SECTION

CROSS SECTION

245

248

2

2

24

2

2

2

24

2

SECTION 251 CROSS SECTION

2 2

2 26

24 24

22 22

2


80

00

300

280

60

20

00

Left bank

80

20

200

0

80

0

0

0

00

Pigkt bank

20

00

U

0

0

20

200CROSS

J

Right bank80

0

40

20

Left bonk RIQhI bank 280Lett

260

24 U

220

bank

200CROSS SECTION 25? 200CROSS

28

260

0

20

0

60-

00

00

0

60

0

220

200

CROSS SECTION 262

CROSS SECTION 265

FIGURE 79.-- Umpqua River cross-sections

07


30

2

26

24

22


EXPLANATION

500-yeor flood-. - ---. - IOO-yeor flood

1964 flood25-yeor flood10-year flood

Low water

I I

800I

1600


24

2

20

28

2

24

22

2

2

26

24

22

2

CROSS SECTION 259

2

26

2

2

28

2

24

2

20

2

26

24

2

SECTION 260

28

2

24

2

2

28

26

24

2

SECTION 258

CROSS SECTION 261

3

28

2 2

24 24

2

Lef bt300

280

280

240

220

0

80

60

0

0

00

80

60

CROSS SECTION 2

268

74

220CROSS SECTION 2??

300

280

260-

240


00

80

0

0

220

8

60

0

200CROSS

300

280

260

240


30

28

26

24

Right bonkf49hf btk Left bonk300


300

280

260

240

220

0

0

60

CROSS SECTION 276

300-

280

260

240

SECTION 281

2

2

2t

CROSS SECTION

30

2 28

2 26

24 24

22 2

20SECTION 269 SECTION 270

1600


108

-J

w_j

zLii

-z0>UJ

22

2CROSS SECTION

30

2

2

24

30

28

2

24

271

3

2

26

24

CROSS SECTION 275

2

2

2

22SECTION 278

30

28

2

CROSS SECTION

0I

273

EXPLANATION

500-year flood_._._._._.. 00-year flood


.._. .........---. 10-year floodLow water

800I I


0 1120CROSS

'0CROSS SECTION 28

0

0

0

0

0

20

0

0

80

0


-j00

80

260


20

U

0

0

0

Right bank Left bank300

28

260


320

00

0

0

109

Right bank

/

320

300

280

260

2 0

220

I

3

30

28

2

24

220

28

26

24

220RQSS SECTION 285

CROSS SECTION 288

\

CROSS SECTION 290

FIGURE 81 -- Umpquo River Cross-SeCtions

3

28

26

24

SECTION 282

3

30

28

26

2

32 34

30 32

28 3

26 2

24

2CROSS SECTION 286

32

30

2

26

EXPLANATION

500-year f roodIOO-yeor flood1964 frood

25-year flood0-year t rood

Low water

0 800 I60


/I

r-J

32Ieft bc%J,

300

280

260

CROSS SECTION 291

320

300

28

26

2*

260

24

22

320

300

280

260

0

0

CROSS SECTION 295

rr

24'CROSS SECTION 298 240CROSS SECTION 299

320

300

280

260

0

20

0

80

0

Right bank 320Left bank

300

28$

260

0CROSS SECTION 292

____F2'

1LI1

2:0I

0


800

0

0

0

0

240

320

30

28

260

240CROSS SECTION 29?

320

300

280

260


R,ght bark

30

320

280

3

3

2

26

32

30

28

26

hO

CROSS SECTION 300

EXPLANATION




FIGURE 82 --Umpqua River cross-sectcns

00

80

0

0

'40

260

20

00

80

L&t bc,nk R,ht bor,

0CROSS SECTION 308

- 340

320

300

280


340

320

300

280

260

28

3 0

320

300

300

00

300

280

0CROSS

a

I

/SECTION 306

340

320

280


I

J

90


340

320


26CROSS

0

0

00

80

60CROSS

40

20

260

340

320

300

280

0'

2CROSS SECTION 313

0 800

RIgbt banb

600

borc Ritit bonk20Lft

20

0 0

80

Lifl bonk

00

80

60'

FIGURE 83.-- Umpqua River crosS-seCtions

CROSS SECTION 310

EXPLANATION

500-year floodl00-yearflood


Low water

CROSS SECTION 314HORIZONTAL SCALE, IN FEET

22Hw

32

3

2

26

214CROSS SECTION

3

32

30

28

CROSS SECTION

302

305

3

3

2

2

24SECTION 303

3"

3

3

2

314

32

3

2

2

3

3

30

28

SECTION 3014

SECTION 307

z314

z32

3

2

340Left bank

320

300

280

60

0.

360

340

320

300

CROSS

60

0

0

00

280CROSS

Hi9ht bank340

32

300

28

Left bank

0

260CROSS SECTION 31?

340

320

300

280


360

340

320

300

280

ICROSS SECTION 326

Right ban Lef I bcnk340

320

300

280


360

340

320

300

60

40

360

0

20

0


8CROSS SECTION 32 4

RghI banK

0CROSS SECTION 323

30

3

320

300

28

0

0

2CROSS SECTION 316

34

32

3

2

26SECTION 319

32

30

ftI 28ORQSS SECTION 322

z

U31 34

32 3

3 3

2

SECTION 325

FIGURE 84-- Umpquci River CrOSS-SeCtionS

112

SECTION 32?

EXPLANATION

500-year flood100-year flood1964 flood25-year flood10 year floodLow water

80H0R0NTAL SCALE, J FEET

barJ

40

320

300

280

Right bank Lc1t tr360

340

320

300

280CR0S5 SECTION 328

SECTION 332

bank

360

340

320

300

280CRO59 SECTION 333

6

0

0

0

0

6CROSS SECTION 328

360

340

320

300

28CROSS SECTION 331 2800RO55


13

28CROSS SECTION 330

3

34

32

J 30

EXPLANATION

LU 500-year flood100-year flood


H 0 800 1600I I I I

U-HORIZONTAL SCALE, IN FEETz

0

flood profiles in the umpqua river basin,'oregon part 2

Documents