Moberly, Missouri Water Supply Study Sugar Creek Lake

Sugar Creek Lake is located about 2 miles North of Moberly in Randolph County. Its drainage area is11.05 square miles. The lake is in the East Fork Chariton River watershed.

Average annual rainfall for the period 1951 through 2002 is 37.8 inches. Annual rainfall for 1953 through1957 is 24.9, 34.8, 37.7, 27.9, and 34.0 inches.

Three analysis were made: 1. First run was with the 2001 demand. 2. The lake was analyzed for the optimum daily use without emptying the lake during the evaluation period. The optimum yield from the lake with no additional water added to the system was 1.20 million gallons per day. 3. Additional water that was needed to meet Moberly’s needs during the drought of record in the 1950’s.

For this analysis actual runoff data from local stream gages was used. Comparisons were made for theElk Fork Salt River gage, Drainage area is 262 square miles near Paris, and Moniteau Creek gage nearFayette, drainage area 81 square miles. The Elk Creek drainage area shares a common boundary withthe Sugar Creek Lake drainage area. Moniteau Creek rises a few miles South of Moberly. Both of thesegages yielded similar results. The monthly runoff results were less for these two gages than the USGSregional data. Because proximity of the watersheds and the topography, soils, vegetation and land usein the drainage area of Sugar Creek Lake is similar to the Elk and Moniteau Creeks drainage areas itwas elected to use Moniteau Creek for runoff values because the records are the most complete.

Sugar Creek Lake analysis consisted of using the NRCS's computer program "RESOP". This programanalyses remaining stored water at the end of each month by summing gains and losses.

Following is the data and procedures for input to the "RESOP" program.

STO-AREA Elevation-Storage and Elevation-Area data were determined from April 6, 2004 survey made by USGS.

Sugar Creek Lake Elevation Area Volume

(feet) (acres) (acre-ft) 716.0 0.1 0.01 718.0 11.9 8.1 720.0 39.1 55.4 722.0 68.7 163 724.0 93.8 328 726.0 117 539 728.0 141 797 730.0 164 1,100 732.0 188 1,460 734.0 214 1,860 736.0 230 2,300 738.0 245 2,780 740.0 259 3,280 742.0 279 3,820 744.0 297 4,400 746.0 314 5,010 746.8 320 5,250 Spillway Elevation 746.9 332 5,290 Water Surface in Dec. 2003

LIMITS Full Pool storage 5250 Ac.Ft. Minimum pool storage 330 Ac.Ft.

Starting storage was considered at full pool elevation.

The drainage area of the lake is 11.05 square miles.

GENERAL The adjustment factor of 0.76 to convert from pan evaporation to lake evaporation wasapplied prior to entering the data for the control word EVAP. As a result a factor of 100 is

applied.

The record period of drought is in the 1950's. Analysis began in January 1951 and ended December 1959.

SEEPAGE The reservoir seepage varied from 0 seepage near empty to a maximum of 3.0 inch permonth when at full pool. The material in the dam is compacted earth of clayey soils.

RAINFALL Rainfall data came from the Moberly, Mo. rain gage for the period 1951 through 1959.

RUNOFF The runoff into the lake from its drainage area. Monthly runoff volumes in watershedInches were determined for the Moniteau Creek stream gage.

In cases where rainfall to runoff values did not appear reasonable, adjustments weremade for that month by looking at individual rains and estimating antecedent moisture andthen, adjusting runoff based on NRCS's runoff curve numbers.

EVAP. Pan evaporation at the Lakeside gaging station was used as a base because it has datafor year around evaporation. All other stations only measure data between April throughNovember. Lakeside data was updated during these months with gage data from stationsat New Franklin, and Columbia. Depending on the latest data for the station nearest toMoberly.

DEMAND This was determined by city records. The total use in 2001 was 561,159,100 gallons which amounts to 1.537 million gallons per day.

Moberly, MissouriWater Supply Study Sugar Creek LakeStorage Volume

710

715

720

725

730

735

740

745

750

0 1000 2000 3000 4000 5000 6000

Storage in Acre Feet

Elev

atio

n in

Fee

t

Spillway Elevation = 746.8 FeetStorage = 5250 Acre Feet

Water Surface on Dec 18, 2003at Elevation 746.9 Feet

Figure 23.1.a

Moberly, Missouri Water Supply StudySugar Creek Lake

Surface Area

710

715

720

725

730

735

740

745

750

0 50 100 150 200 250 300 350

Area in Acres

Elev

atio

n in

Fee

t

Spillway Elevation = 746.8 FeetArea = 320 Acres

Water Surface on Dec 18, 2003at Elevation 746.9 Feet

Figure 23.1.b

Moberly, MissouriWater Supply Study Sugar Creek Lake

Lake Storage

0

1000

2000

3000

4000

5000

6000

1951 1952 1953 1954 1955 1956 1957 1958 1959Year

Stor

age

in A

cre

Feet

2001 demand = 1.537 MGDNo pumping from creek

Optimized Demand = 1.20 MGD No pumping from creek.

Minimum available Storage = 330 Acre Feet

Storage at Spillway elevation = 5250 Acre Feet

Continuous Pumping from creek at 800 Gallon Per Minute

2001 demand = 1.537 MGD

Figure 23.2

Moberly, Missouri Water Use

Million Gallon Per Day

0.0

0.5

1.0

1.5

2.0

2.5

3.0

1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001

Year

Wat

er U

se in

MG

D

Trend

Moberly has been reporting East Fork Chariton River as a supply source after 1992, but has reported zero withdrawl in every year.

2001 demand = 1.537 MGD

Rural Water Districts and non municipal demands removed from the system

Figure 23.3

0 250 500 750 1,000 FEET

0 100 200 300 400 METERS

SUGAR CREEK LAKE

Figure 31. Bathymetric map and table of areas/volumes of the Sugar Creek Lake near Moberly, Missouri.

Table 31. Lake elevations and respectivesurface areas and volumes. Approximateelevation of spillway structure is 746.8 feet. Elevations referenced to North American Vertical Datum 1988 (NAVD 88). Note: Volumes calculated from surface testing 0.91 feet vertical accuracy at 95percent confidence level.

Elevation Area(acres)

Volume(feet) (acre-ft)

716.0 0.1 0.01718.0 11.9 8.1720.0 39.1 55.4722.0 68.7 163724.0 93.8 328726.0 117 539728.0 141 797730.0 164 1,100732.0 188 1,460734.0 214 1,860736.0 230 2,300738.0 245 2,780740.0 259 3,280742.0 279 3,820744.0 297 4,400746.0 314 5,010746.8

746.9

320

332

5,250

5,290

In cooperation withMissouri Department of Natural Resources

BATHYMETRIC CONTOUR—Shows altitude of the reservoir bottom.Contour interval 2 feet. Contours tested 1.51 feet vertical accuracy at95 percent confidence level.

WATER SURFACE—Shows approximate elevation of water surface,December 15–18, 30–31, 2003 (mean water-surface elevation duringsurvey period was 746.9 feet, table 31).

U. S. GEOLOGICAL SURVEY REFERENCE MARKER—Chiseled arrowlocated on center of walkway above primary spillway. Elevation 755.1 feet.

EXPLANATION

730

746

746

746

740

704

730

730

720

LOCATION MAP

Randolph CountyMISSOURI