JANUARY 1950

UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF

RECLAMATION,

REGION 7

KANSAS RIVER

DISTRICT,

INDIANOLA, NEB.
UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF RECLAMATION

Region 7 - Denver, Colorado

SEDIMENTATION SURVEY

OF

SHERIDAN COUNTY STATE LAKE

KANSAS

Kansas River District

Indianola, Nebraska

April 19SO
TABLE OF CONTENTS

Page

List of Illustrations . . . . . . . . . . . iii

Introduction . * . . . . . . . . . . . . . 1

Authorityforthe Report • •. ... • . 1

Acknowledgments . . * . . . . . . . 1

Purpose of theSurvey. 0 • . • . . . 1

Location . • . . . . . . . . . . . . , . . • . 2

Ovmership . . . . . . . . . . . . . . . • . . 2

Use , . . , . . . . . . . . . . . . . 2

Description of the Dam . . • • • 0 • • • . 2

Descriptionof the Lake. ...... 00 0 0 * 3

Description of the Drainage Area:

Area • 0 0 0 • • • • • • • • . . . L1.

Geology 0 • • • . • • • • • • 0 • • Ii.

Topography 0 0 • • 0 0 • 0 0 • • • • 5

Climate 0 • • • • . . . . . . . . . . . S

Rainfall 0 • • • • • • . . . . . . . S

Inflow 0 0 0 • • • • • • . . , , . , S

Land Cover 0 • 0 0 • 0 • • • • 0 0 0 5

Land Use . . • • • * . , . . , • . 6

Soils • 0 0 • 0 0 • • , • , • • • • 0 6

Erosion • • 0 0 • , • , • • • • • . . . 6

HistoryofSurvey.... ,.,..... . . . 7

Distribution of Sediment . . . . . . , . . . 8

Volume Weights and Mechanical Analyses . 9

Analysis of Observed Densities • . 9

TrapEfficiency. 00* 0 00 • • .0.0 0 0 9

Method of Computation . • • • • • • . . . . 9

StatisticalSunimary... ........ . . . 11

Summary 0 0 • 0 • . a a • a a a a • a a • * 11

Bibliography s..... . ....,.. . . . 12

11
LIST OF ILLUSTRATIONS

Figure

1

2

3

6

7

8

9

10

Views showing break. • •. . . • • •0

Views of reservoir area and break . . ,

Views of sediment deposits in reservoir

Additions to dam (typical cross-section)

Map Reservoir of Sheridan County State Lake

(inthreesheets) •... •,• •0

Watershed map . . . . . . . . . .

Geology, above Quinter Dam . . . . . . *

Soil erosion . . . . . . . , . . * . .

Sediment size analysis . . . . . , . . . .

Relation of unit weight of deposited sediments to percent of sand . . . . . .

Area andcapacity. . . . . • • • •. .

Page

13

l

16

17-19

20

21

22

23

2L

25
INTRODUCTION

Failure of the Quinter Dam on June 28, 19)48, afforded an opportunity to make a sedimentation survey of the empty Sheridan County

State Lake Reservoir, Kansas. Field investigations by District personnel, under the technical supervision of the Sedimentation Section,

Hydrology Division, Bureau of Reclamation, were started July 21, 19)48,

and were completed August 11, 19)48. This report presents the findings

of the survey0

AUTHORITY FOR THE REPO'

This report is authorized to be made by virtue of the Federal

Reclamation Laws (Act of June 17, 1902, 32 Stat. 388, and acts amendatory thereof or supplementary thereto).

ACKI'O 1LEDGMENTS

Excellent cooperation was furnished throughout the investigation

by the Wilson Engineering Company, Sauna, Kansas; by Mr. Dave Leahy,

Director, Kansas State Forestry Fish and Game Commission; and by Mr.

J. B. Spiegel, District Engineer, Surface Water Division, Geological

Survey, Topeka, Kansas. Valuable infonnation concerning the original

construction of the dam was also furnished by Mr. George S. Knapp,

Chief Engineer of the Division of Water Resources, Kansas State Board

of Agriculture.

Mr. Louis M. Seavy, Hydrology Division, and Mr. V. A. Koe1zer

Regional Office, Bureau of Reclamation, Denver, Colorado, assisted in

the initiation of the field surveys. Mr. R, J. Walter, Jr., Construction Engineer, and Mr. Glenn E. Thomas, Office Engineer, Cedar Bluff

Unit, Ellis, Kansas, provided personnel, valuable data, equipment,

and services.

PURPOSE OF THE SURVEY

The survey was conducted to obtain data on the rate of sedimentation in the Sheridan County State Lake Reservoir for possible application in the design and operation of other reservoirs. The data

should be valuable in estimating the useful life of water storage

facilities and may provide support for the justification of upstream

sediment control measures,

1
LOCATION

The channel reservoir is located on the Saline River, approximately three miles east and five miles north of Quinter, Kansas0 The

reservoir is in Sections 26 and 3, T. 10 S0, R. 26 L, in Sheridan

County, Kansas0

The Quinter Dam impounds water of the Saline River from a drainage area which includes parts of Sheridan, Gove, Thomas, Logan, and

Sherman Counties, Kansas0 (See Figure 6.)

0 ERSHIP

The dam was constructed by the Civilian Conservation Corps for

the State Game and Fish Commission. It is still under the supervision

of the Commission.

USE

The lake is used chiefly for recreation.

DESCRIPTION OF THE DAM

The original Ainberson type dam was supported on piling. The dam

utilized a Wakefield sheet piling as a cut-off wall at the upstream

toe. The cut-off wall was supposed to extend a minimum of two feet

into shale. The streambed consists of a coarse sand-gravel strata

overlying soft shale, while the valley slopes are composed of a fine

clay-bess soil overlying the shale,

Upon completion in September l93, the gates were closed and the

heavy ran-off during the period of September 9-lL, l93, caused the

reservoir to fill rapidly. Numerous leaks appeared which showed that

water was passing through the cut-off wall under the dam, When the

lake level had risen to about three feet below spiliway crest elevation,

the dam failed, In spite of the washing out of material under a sec

tion of the dam, there appeared to be little, if any, vertical or hori

zontal displacement in the main structure.

Investigations disclosed that the Wakefield piling had been poorly

placed. Some of the piling had been driven at varying angles to the

vertical, which caused the piling to split and leave wide openings.

2
The piling in one portion was driven only to elevation 103 feet

although the coarse gravel strata extended down to elevation 85

feet /

In repairing the dam, the existing structure was used as a toe

for an impervious earthf ill dam which was constructed by placing an

earth blanket above the dam on a l to 1 slope0 The earthf ill was

covered for a width of 20 feet by a solid concrete slab and for an

additional width of to feet by old concrete slabs and ungrouted rock

riprap0 (See Figure t) The reduction in reservoir capacity below

elevation fl7 feet due to the additional blanket, etc0, is estimated

at l62 acre-feet0

The height of the dam is approximately 21 feet above the streambed0 The crest is )430 feet in length and the maximum width at the

base is liD feet0 The uncontrolled spiliway has a crest elevation of

118 feet0

The eroded area under the dam and the interior of the dam were

filled with hand-placed dry masonry fill0 Only the silting of the

reservoir made it possible to hold water in the lake by sealing off

the pervious material underlying the dam0 The gates were closed for

a second time about August 1, l937

At some stage in the life of the dam, the 12-inch weep holes were

plugged with concrete0 The hydrostatic pressure that built up on the

inside of the dam blew off a large section of the downstream face and

on June 28, l9L8, washed out the hand-placed dry masonry fill from

the interior0 (See Figure i)

Repair work on the dam was initiated in October 19)48 Repairs

included the placement of a cut-off to shale at the upstream toe of

the original concrete dam, repair of flood damage to the concrete,

and placing the gate in operative condition0 The reservoir was filling

by April l919

DESCRIPTION OF THE LAKE

Because of seepage the normal water surface level was below the

spillway elevation 118 feet and no apparent deposition of sediment

occurred above elevation ll7 Computations disclose that the original

reservoir at elevation 117 had a capacity of 793 acre-feet and a surface area of 116 acres0

A topographic map of the reservoir area drawn from the original

plane-table sheet is the basis of dam and reservoir elevations used in

this report0 All elevations are in feet0

3
The repair of the dam in 1936 reduced the capacity of the reservoir to 777 acre-feet with an area of 116 acres at elevation ll7 In

June 19L8 the capacity at that same elevation was L36 acre-feet with

an area of 116 acres0

The lake is approximately 23 miles in length, measured along the

thaiweg from the dam to the head of the backwater0 The width of the

lake ranges from 600 feet at the dam to 1,200 feet at a point approximately 07 of a mile upstream0 Beyond that point the lake gradually

narrows in the remaining i6 miles to the headwater0 (See Figures 2

and 30)

Both sides of the valley along the reservoir and the lake basin

are gently rolling terrain0 Some fairly steep slopes exist on the

southwest side of the reservoir area0

DESCRIPTION OF THE DRAINAGE AREA

Area

The drainage area above Quinter Dam is approximately ).93 square

miles, of which about 30 square miles are noncontributing0 (See

Figure 6) There are no major structures in the watershed above the

dam which might reduce the sediment contribution to the reservoir0

The drainage area lies in portions of five counties in Kansas as

follows:

County

Gross

D0A0 (sg.mi0)

Noncontributing

D0A0 (sq0mi0)

Net

D0A0 (sq0mi.)

Gave 360 360

Sheridan 21OO 0 20O

Thomas 22)40 2IO 2000

Logan O 000

Sherman 180 l0 170

_______ L930O 3O0 L630

logy

The geology of the drainage area is shown on Figure 7 Over 9

percent of the area is of the Ogallala group, the remainder is Niobrara

chalk in the vicinity of the reservoir0
Topography

The lower portion of the valley is irregular and varies from

gentle to steep slopes with hilly to rough broken topography. The

valley becomes more entrenched near the headwaters. Back from the

steep banks along the stream the country is gently rolling in character and contains areas of nearly level ground.

Climate

This part of Kansas is noted for extreme and sudden changes in

weather, Floods, tornados, hailstorms, and duststorms are not unknown,

The stream flows depend largely on rainfall rather than snowmelt, and

the fluctuations are wide and unpredictable0 The winters are cold and

the summers are hot. Based on LO years record at Hoxie, Goodland, and

Colby, Kansas, the mean annual temperature is 30 Fahrenheit and the

mean annual precipitation is l8. inches. Although the range of temperature may vary between 1130 F. and _230 F., the average maximum

temperature is 1070 F, and the average minimum is .l20 F.

Rainfall

No weather record stations are located within the drainage area,

therefore, three nearby stations were used.

Mean annual Iears

Station rainfall of

(inches) record

Colby, Kansas 18.02

Goodland, Kansas 17.98

Hoxie, Kansas 19.3

Inf low

No records of inflow to the reservoir exist; the nearest gaging

station on the Saline River is at Russell, Kansas, approximately 68

miles downstream,

Land Cover

The greater part of the area is naturally treeless. Small wooded

areas, timbered mainly with cottonwood trees, are located in the alluvial valleys. The grass is of the short type, chiefly buffalo grass.
Cover Percent of Square miles

_____________________

drainage area

Short grass and sage 21.L 106

Cultivated 76. 377

Barren 2l 10

Total 10000 193

Note: The noncontributing area is excluded0

Land Use

Little irrigation is done in the drainage area; the fanning and

grazing are in about the same ratios as the land cover types would indicate0

Soils

The parent soil material is bess for the entire drainage area0

The soil, according to land use capability, is described in the following tabulation:

Land use capability Percent Sq. Miles

Suitable for cultivation with

simple practices 377 166

Suitable for cultivation with

intensive practices 3S.6 17S

Limited cultivation with intensive practices 2.0 10

Suitable for grazing or woodland 2Lt.7 122

Total 10000 L93

Erosion

Erosion in the drainage area is tabulated on the following page0

(Also see Figure 8)

6
Erosion type Percent Sci miles

None or slight 7O8 39

Heavy sheet, gully

and scour 292 114t

Total lOOO L93

HISTORY OF SURVEY

In July l9i8, a representative of the Hydrology Section of Region 7

and a representative of the Sedimentation Section of the Hydrology Divisian, Branch of Project Planning, Bureau of Reclamation, Denver, Colorado, visited the Cedar Bluff Dam construction office at Ellis, Kansas

for the purpose of inspecting and planning a sedimentation survey of the

Sheridan County State Lake Reservoir0

The field work was performed by personnel from the Ellis office

between July 21 and August 11, l9L80 These personnel included the f allowing: E0 E0 Wheatley, Engineer of Surveys; Jay R0 Brovm, Chief

Inspector; Glen B0 Wilder, Carrol Malinowsky, Russel Christensen,

Jack V0 Rhoades, Duane Kerth, Dean Schoenthaler, Louis Schuster, and

Robert McAter0

In order to determine the amount of sediment that had accumulated

in the reservoir since Quinter Dam was constructed, it was necessary

to obtain the original reservoir topography0 The Wilson Engineering

Company, designers of the first dam, had made the initial survey of the

reservoir area0 The Company does not have the original planetable sheet

it had been forwarded to the Director of the Kansas State Forestry, Fish

and Game Department0 Efforts to locate the planetable sheet have proved

fruitless0 However, the Wilson Engineering Company did furnish a topo

graphic map of the reservoir area showing five-foot contour intervals

drawn from the original planetable sheet0 This topographic map was

the basis for the resurvey of the reservoir area0

Control for the original planetable survey of the area was accomplished by running a closed traverse around the area0 Points of intersection on that traverse were marked with concrete monuments0 Ranges

were established for the 19t8 survey and were tied into the original

survey monuments0 Vertical control was established from the original

bench mark which was also checked against the elevation of the crest

of the dam0 Actual surface elevations of points where sediment sampie s

were taken, were established by stadia shots0 Location of sediment

prior to flushing when the dam failed in l918 was estimated in the resurvey0

7
The crest contour of the lake (elevation 118 feet) was mapped on

a topography sheet at a scale of one inch to 300 feet0 (See Figure 5)

The length of the shoreline is about l miles0 Original and present

capacities were determined by the contour method0

DISTRIBUTION OF SEDIMIT

In many instances the old floor of the reservoir was hard to

identify from borings0 Evidence of vegetation and surface debris

were relied upon when found0 Occasionally several strata of vegetative matter were encountered0 Consequently, difficulty was encounteri.

in checking the accuracy of the original map of the reservoir area0

It was believed that the contours shown on the map prepared by

the Wilson Engineering Company were not sufficiently accurate to use

in plotting the original profiles0 However, close agreement was obtained between the interpolated value for the surface area at elevation 117 on the original survey and the value obtained from the 19)48

field survey0 Normal water level in the reservoir was seldom above

this elevation and sediment would have been negligible except in the

delta area0 The delta deposition may have been largely eliminated by

the flood which destroyed the dame

In order to show the distribution of sediment in the Sheridan

Reservoir from the head of the backwater to the dam, the lake area was

divided into segments0 This made it possible to apply the volume

weight for the various segments0 The segregation and the distribution

obtained are shown in the following table:

From To Acre-feet a/ Lb/cu0ft0 Tons

Dam l0O upstream 862 b/ Oo 63,837

(between Ri ar

R)4)

l0O 333O upstream l38l2 6O l9,36

(between ii)4 and

R7 )

333O 721rJv upstream l1211 69)4 l69,)4$7

(between R7 and

RiO)

72)40' Headwater of res0 32)45 92)4 6,3O

Total or average - 3)4l3O 66O5 )49)4,l3

Crest elevation of 117 feet was used.

bJ The volume of earth-fill, l6.2 acrefeet, placed

over the face of the original dam has been deducted.

8
Volume Weights and Mechanical Analyses

Eleven samples of the sediment that had been deposited in the

reservoir were secured at various depths and locations for the par-.

pose of obtaining the volume weight and the gradation of the sediment0

The sediment sampler was a two-inch diameter tube and suction valve,

to which lengths of two-inch pipe could be attached,

Data pertaining to the analyses of the sediment samples are presented on the next page0 Figure 9 is a graph of the size analyses of

these samples0

Analysis of Observed Densities

An analysis of the observed densities is illustrated on the graph,

Figure lO Sample data from four other reservoirs were also used0 The

sediment samples for this analysis were divided into sand, silt, and

clay fractions0 The curve obtained from the analysis of the samples

shows a definite increase in weight with an increase in sand content0

TRAP E'FICIENCY

Due to the lack of nearby sediment sampling stations, the trap

efficiency of the reservoir cannot be established mathematically0

Qualified engineers familiar with the reservoir believe that the trap

efficiency has been relatively high0 This has been due principally

to the large amount of seepage through the gravel underlying the dam,

which kept the lake level low0 Large spills were very infrequent0 A

trap efficiency of 80 percent was assumed0

METHOD OF COMPUTATION

The initial failure of the dam occurred less than a week after

the first closure, Very little sediment could have been deposited

in those few daySO Therefore, the effective period of sedimentation

was considered to be the lO8 years occurring between the second

closure August 1, 1937 and the final failure June 28, l9L80

The storage capacity and sediment accumulation for the reservoir

were computed by the contour method, This method was used so that the

distribution of the sediment by elevations could be more closely determined and for obtaining the data required for drawing a new capacity

curve0 (See Figure l1) Because of the inability to establish the

original floor of the reservoir along the profiles, computation of storage capacity and sediment accumulation by the range method was irnprac

tical0 The table on page 11 presents a statistical summary of significant findings,

9
Sediment Sample Data of

Sheridan County State Lake Reservoir

Mechanical analysis

Sample

N

Range Stat

ElevaVolume

weight ______ _____ _____

Percent of grade size smafler than

o0 ion tion 1I/cu.ft.) 19.05 9.52 14.76 2q38 .119 .590 .297 .1149 .071 .050

-

.037

____

.019 .009

____

.005

mm nun mm nun mm mm mm mm mm mm mm mm mm mm

1 - 108.6* 100 99.1 96.9 88.9 67.6 35.7 5.9 1.5 1.3

2 1 2,L00 105.7 50.5 100 99.9 99.6 97.5 914.14 92.3 91.1 87.6 814.9 69.14 53.0 142.1

3 1 14,L0O 107.5 149.5 100 97.2 914.0 814.6 70.6 58.6

14 14 2,L00 112.6 71.0 100 99.8 99.3 98.14 96,1 90.6 85.6 70.14 60,1 37.8 25,9 17.3

S 14 3,L15 1014.14 6!j.5 100 99,9 99.14 98.6 97.6 95.1 81.6 72.1 50,2 37.8 30,2

6 14 6,L22 108,3 63.14 100 9907 99.2 98.8 98.2 88.2 77.14 59.3 1414.0 32.6

7 24 10,L214 110.1 61.3 100 99.8 99,14 99,1 98.8 91.9 85.6 63.8 146.0 314.6

8 7 2,L80 113.S 67.7 100 99.9 99.3 97.8 95.7 91400 87,0 80.5 57.5 382 27.14

9 7 14,L6o 111.5 71.0 100 99.6 97.8 91.0 85,1 81.8 7103 614,0 14506 32.9 26.3

10 10 0,10 - 95,7 100 99.6 99.0 97,3 82,0 22.8 306 205

11 10 085 1114.1 89.2 100 99.8 9807 96,5 93.14 90,0 79,9 65.5 141.2 28.6 25,24

* Sample 1 considered not representative and was not used,
STATISTICAL SUMMARY

Item Quantity Unit

- Age . a . . . . . . . . . . 10.8 years

Watershed

Contributing ......,,..,,..,,. L63 sq.miles

Non-contributing . . . . . 30 sqe miles

Reservoir

Area at crest elevation:

Original00000000000000000. 116 acres

Atdateofsurvey •eeoe.eeo,.,o 116 acres

Storage capacity at crest elevation:

0 riginal a • . 777 ac.-ft.

At date of survey a o 0 • b36 ac.-ft.

Storage capacity per square mile of

drainage area:

Original 0 0 0 • 0 • • i68 ac,-ft.

Present 0 • 0 0,9tj. ac0-ft,

Sedimentation

Sedimenideposited in reservoir 0 o 0 0 3L1 ac.-ft.

Total sediment yield to reservoir

(Trap efficiency 8) 0 0 0 o , !26 ac,-ft0

Sediment yield per year 0 0 0 • 39.Lt ac,-ft.

Sediment yield per year per

100 square miles of drainage area • 0 8.2 ac.-ft.

Sediment yield per year per acre

of drainage area:

By volume 0 0 0 0 0 0 0 0 0 0 0 , • 0 0 .80 cu. ft.

Byweight 000 0000000 a.. O0l9tons

Depletion of storage

Loss of original capacity per year • • L1..06 percent

Loss of original capacity to date of failure. Li3.89 percent

/ Using crest elevation 117 feet and deducting the volume of

earth fill placed over the face of the original dam.

SUMMARY

With the failure of Quinter Dam on June 28, l9L8, the Sheridan

County State Lake Reservoir s emptied, presenting an opportunity to

make a sedimentation survey of the reservoir.

11
Based on the original reservoir area topographic map and on the

resurvey of the reservoir area, it is concluded that in 10.8 years of

operation, the reservoir storage capacity was reduced 31t1 acre-feet

or hti. percent by sedimentation. The reservoir trap efficiency was

estimated at 80 percent making the total 10.8-year sediment yield to

the reservoir L26 acre-feet or 39.) acre-feet per year, or 0,08 acrefeet per square mile of contributing drainage area per year.

The large annual rate of storage depletion in the reservoir s

due largely to its small original storage capacity in relation to its

large drainage area run-off.

These studies emphasize the necessity for providing sufficient

additional storage space to provide adequately for the expected sediment production from drainage areas above proposed reservoirs and dams,

BIBLIOGRAPHY

Geologic Map of Kansas, prepared in 1937 by the State Geological Survey

of Kansas, from data supplied by oil companies and consulting geologists and from surveys of the U. S. Geological Survey and State

Geological Survey in cooperation.

Climatological Data, Kansas Section, weather Bureau, United States Department of Commerce.

Reconnaissance Soil Conservation Surveys for Sheridan, Thomas, Sherman,

Logan, and Gove Counties, Kansas; Soil Conservation Service, Lincoln, Nebraska.

Agricultural Resources of Kansas, Kansas State College Bulletin, Volume

XXI, October 15, 1937.

Lane, E. Vi. and Koelzer, V. A., Density of Sediment Deposited in Reservoirs, Report No. 9 of Cooperative Federal Agency research project

at the Iowa Institute of Hydraulic Research, published by United

States Engineer Office, St. Paul, Minnesota, l9lj3o

12
FIGURE I

-

____

1⁄4- -;

•' '; ;__

-.---

I :'

View showing break (191$8) in Quinter ].in - upstream

face of dam on left side.

- - -- - ---s-- --

- .--_z___ -.

View of downstream face showing break of 191

due to hydrostatic pressure.

'3
FIGURE 2

••. -•__q

!. n

.._.:aC- ;U.#1,

:

14

Looking upstream - showing sediment deposits in

reservoir area above dam.

View showing break in Q,uinter im and ssdiient in

reservoir area above dam.
FIGURE 3

-4

- -

*4?

View of sediment deposits in reservoir - looking

upstream from dam towards right bank.

-I.

T ..

15

Looking upstream, note sediment deposits in reservoir.
Space intentionally left blank due to security concerns 



0

oCOLBY

THOM AS

N

KLE

L 0 G A N

I

LEGEND

I

1NEB

____

Drainage ireo

- County Lines

• Weather Station

Indefinite Drainage

SHERIDAN

°HOXIE

AR

- $

OANGELkN RIVER

PJ\

GR&NAEL

GO VE

. .

SCALE OF MILES

EEPARTMENT OF ThE INTER/OR

JRE4U OF REQLAM4I/O/V - REGION?

MISSAJRI RIVER BASIN PROJECT

WA TER Si-/ED MAP

SHERIDAN CO sr LAKE RE$ERV'R

- - SU8IflTTED

CEOI - - PEcA2MMENL

C/-lECKED_E - - P,ov
0COL8Y

SHERIDAN

I °HOXIE

THOM AS

QUINTER I

O4M

• I --

•.. O I 04nqe/us •

R

__

i0

______

- -

- Ook Gra,nf/e/d

L 0 G A N

G 0 V E

LEGEND

I

cO J Oga//ala group

Niobrara chalk

Geology from "Geologic Map of Kansas "prepared

by the Kansas Stale Geological Survey /937

tO 0 10

SCALE OF MILES

-n

6)

C

rn

-.1
0catv

THOM

L 0 G A

F3

- - - -

- p

Grain field

G 0 V E

10 0 10

SCALE OF MILES

SHERIDAN

I °HOX/E

AS

I __ QLJ/NTER

N

LEGEND

Heavy Sheet, GuIley 8 Scour

'1

C)

C

m
-- .

.- -- -- .- - -... - , -- -

- -- --. -

.-.

- -. - -

----,---------

-=--.-= •

FIGURE 9

Ui

-I

1

4

U)

I.-

z

Ui

0

Ui

a0 O.

,

• 0 oqoqo

PARTICLE SIZE - MILLIMLTLRS

CLAY SILT ____________

SAND

Fine j Medium J Coarse Very FIne J Fin. j Medium j Coors. Very [urn

AMERICAN GEOPHYSICAL UNION ( A.GU ) CLASSIFICATION

23

-- 6RAVEL

Coarse rJsfv yFrrefFe

U4'ITED S1A TES

oeRrMENr THE INTtRIOR

BIJREAU OF RECL 4414 T/CW

SEDIMENT SIZE ANALYSIS

SHERIDA N CO• ST. LAKE RESERVOIR

;;;i- ;; :-T;;;; : I :--

7RA(1P ,4m.

- ---- --

Ui

4

.1

Iz

Ui

0

U.S. STANDARD SIEVE SIZES INCHES
FIGURE 10

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

/00

90

80

I&I

I;

70

0

z

060

a

z

Ia'

/0

020

/

, e

0 /

+ 0

•'

LEGEND

< /

°

G ARR(M'ROCK RESERVOIR, E RIVER, IDAHO

/ + GUERNSEY RESERVOIR, N PL.47T6 RIVER, WYO.

€' AL fl/S RESERVOIR, ME RED RIVER, OKL4

SHERIDAN CO. RESERVOIR, SALINE RiVER, KAN

_______ _______ _______ _______ _______ ______ _______ _______ LAKE ER/CK97N, CEDAR RIVER, NE8R

/

• GROUP AVERAGE

I o 4, £

o

/G

____ ____ I

/4-

A

A

o o

_________

Ib

_________ _________ _________ _________ _________ _________ _________ _________ _________

/20 /30 /40

Lmv7dD 3 A,W3

1

I ' A

Df.,flwr OP lIZ lN7EOR

Sl4' OP

I DRANCH OP PO.e-cr PL.WiW9, HOLOGY mie

/ $EAAtdWm7lON SZC77O.V, DEIIVVQ, COLO.qAOO

_________ _________

I ____ + -

_________ _________ _________ _________ _________ RELATtOW OP UNIT W(1911T Of DE- POSITED SEAWEMTS To PERCENT Of SAND I

$MERiVAN COUNTY STATE LAKE

o I •4 D$4W4 l9l77fØ

+ 0 / 0

+ DRY WEIGHT OF SEDIMENT - POUNDS PER CUBIC FOOT

+

-________ + I t - I I ________ ______

Incc0L0. "-'-'I

50 60 70 80 90 /00 I/O
FIGURE U

RESERVOIR AREA IN ACRES

120

I 15

t Capacity

Present rea

110

ginol Capacity

105

I00

095

0

OriinoI Area

I 2 3 4 5 6

RESERVOIR CAPACITY IN HUNDREDS OF ACRE-FEET

7

120

115

110

105

ELEV

)RIGINAL SURVEY iUNE 1948

AItEA

(ACRES)

GAPAC11Y

F

AR.A

ACRES)

OAaTI

A.F _____

097 0 0

-

100 3.7

I0 13 46

I0&5 0 0

107 08 0.1

108 28 1.7

109 6 60

110 51 206 II IS

115 98 579 79 241

117 116 793 116 436

Volume of earth fill, /6.25 ccre-fet,

p/aced over face of original Dam

must be deducted from total capoclly

NOTE

Data from a topographic mop drown from

100 the original plonetable sheet.

095

8

25