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FIG. 1.

Repairing flood damage on Great Eastern canal.

Site of destroyed canal on right, new excavation on left.

Discharge measurements. Made from bridge during high water and by wading at low stages.

Channel and control. Shifting.

Extremes of discharges. Maximum, 1.51 feet, March 9 (discharge 244 second feet); minimum, 0.10, May 30 (discharge 1 second foot).

Diversions. There are court decrees for the diversion of approximately 12,825 second feet from the Arkansas and its tributaries above this station in Colorado.

Accuracy. Rating curve fairly well defined between stages of 0.85 feet and 1.50 feet. Daily discharges determined by applying hourly gauge heights to rating curve. Records fair.,

DISCHARGE MEASUREMENTS of the Arkansas river at Coolidge during 1920-21.

Date.

Made by

Gauge height.

Discharge.

Rodger C. Rice.

Feet.

1.12

Sec.-ft.

64.0

1920. July 12..

1921. Feb. 24. Apr. 19

26 May 3

10
17
24

Geo. S. Knapp.
Bruce H. Cummings.

do..
do.
do..

do..
Knapp and Cummings.

1.50
1.24
1.12

.85
1.06

.85 1.15

236 85.3 37.1

1.65 28.9

1.77 51.9

Daily GAUGE HEIGHT, in feet, of Arkansas river at Coolidge, 1920-'21.

Day.

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Apr.

May. June. | July.

Aug. Sept.

1.49
1.50
1.51
1.50
1.50
1.50
1.50
1.51

1
2
3
4
5
6
7
8
9
10.
11
12
13.
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

1.10
1.02

.87
.87
.84

.85
1.09
1.08
1.07
1.06
1.07
1.00

.87 .90 .98 1.03

1.14
1.14
1.15
1.18
1.19
1.21
1.18
1.18
1.15
1.18
1.19
1.29
1.32
1.34
1.29
1.24
1.21
1.19
1.17
1.14
1.12
1.12
1.13
1.13
1.13
1.07
1.01

1.47
1.45
1.42
1.37
1.35
1.34
1.30
1.23
1.25
1. 24
1.23

.93
.80

1.50

1.12
1.18
1.13
1.10
1.13
1.14
1.11
1.08
.89
78
70
10

1.21
1. 20

Daily DISCHARGE, in second feet, of Arkansas river at Coolidge, 1920–21.

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Location. At highway bridge half a mile south of Syracuse, in section 18, township 24 south, range 40 west.

Drainage area. Approximately 25,500 square miles.
Records available. June 20, 1921, to December 31, 1921.

Gauge. Gurley automatic graphic water-stage register on downstream side of bridge pier, and staff gauge on outside of gauge well.

Discharge measurements. Made from bridge during high water and by wading at low stages.

Channel. Shifting.

Extremes of discharge. Maximum stage, 5.50 feet, July 20, 1921 (discharge 13,450 second feet); minimum stage, 0.94, September, 1921 (discharge 4 second feet). On June 6, 1921, prior to the installation of the gauge, the river reached a stage of about 9.75 feet, and a discharge of more than 45,000 second feet.

Ice. Stage-discharge relation apparently affected but little by ice in 1921 and 1922.

Diversions. There are court decrees for the diversion of approximately 12,825 second feet from the Arkansas and its tributaries above this station in Colorado, and two small diversions above it in Kansas.

Accuracy. Rating curve fairly well defined between stages of 0.94 and 5.22 ft. Daily discharge ascertained by applying hourly gauge heights to rating curve. Records fair.

DISCHARGE MEASUREMENTS of Arkansas river at Syracuse during 1921-'22.

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DAILY GAUGE HEIGHT, in feet, of Arkansas river at Syracuse, 1920-'21.

Day.

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Apr May June July.

Aug.

Sept.

5.22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20. 21 22 23 24 25 26. 27 28 29 30 31

3.14 3.10 3.01 2.96 2.98 3.14 3.15 3.06 2.98 2.86 2.73 2.69 2.53 2.46 2.40 3.13 3.74 3.53 3.67 5.50 4.27 3.53 3.23 3.12 3.32 3.32 3.07 3.00 2.73 2.80 2.65

2.45 2.43 3.81 4.38 4.29 3.63 3.12 2.87 2.81 2.78 2.71 2.64 2.56 2.53 2.52 3.63 4.22 3.54 3.07 2.77 2.53 2.34 2. 20 2.22 2.10 2.02 1.95 1.96 1.92 1.81 1.75

1.69 1.64 1.58 1.53 1.48 1.45 1.62 1.66 1.49 1.44 1.42 1.38 1.34 1.33 1.33 1.32 1.32 1.32 1.32 1.24 1.22 1. 20 1. 20 1.19 1.18 1.17 1.18 1.17 1.16 1.16

4.29
4.31
4. 23
3.92
3.70
3.54
3.42
3.42
3.57
3.30
3.10

Daily Gauge Height, in feet, of Arkansas river at Syracuse, 1921-'22.

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96 96 .96 96 96 96 .96 96 96 .95 95 94 94 94

Daily DISCHARGE, in second feet, of Arkansas river at Syracuse, 1920–21.

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334 304 268 238 210 195 292 316 215 190 180 160 140 135 135 130 130 130 130

* Flow from June 1 to 19 estimated, except on June 10.

1

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