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USGS
Water Resources of Colorado


ARKANSAS RIVER BASIN

07130000 JOHN MARTIN RESERVOIR AT CADDOA, CO

LOCATION.--Lat 38°04'05", long 102°56'13", in NE14NW14 sec.8, T.23 S., R.49 W., Bent County, Hydrologic Unit 11020009, in north parapet of dam on Arkansas River at Caddoa, 3.2 mi southeast of Hasty, and 58 mi upstream from Colorado-Kansas State Line.

DRAINAGE AREA.--18,915 mi2, of which 785 mi2 is probably noncontributing.

PERIOD OF RECORD.--December 1942 to current year. Month-end contents only prior to November 1943, published in WSP 1311. Water-quality data available, June to October 1988 (profile and chemical data at transects along length of reservoir). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07130000

GAGE.--Water-stage recorder with satellite telemetry for elevations above 3,784 ft (48 acre-feet) and nonrecording gage read once daily for those below. Datum of gage is 3,760.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers); gage readings have been reduced to elevations above NGVD of 1929.

REMARKS.--Reservoir is formed by concrete and earthfill dam. Construction started fall of 1939; storage began while dam was under construction in Jan. 1943; record of contents began Dec. 31, 1942; dam completed October 1948. All figures represent total contents from area-capacity table effective Nov. 1, 1999, and based on a 1999 resurvey by the U.S. Army Corp of Engineers. Total capacity at top of dam, 793,400 acre-ft at elevation 3,880.00 ft. Maximum flood control storage at top of spillway gates, 603,500 acre-ft at elevation 3,870.00 ft. Maximum recreation and conservation storage, 344,000 acre-ft at elevation 3,851.87 ft. Capacity at spillway crest, 222,400 acre-ft at elevation 3,840.00 ft. Elevation of no contents, 3,780.00 ft. No dead storage. Reservoir is used for flood control, storage for irrigation, recreation, and in the administration of terms of the Arkansas River Compact between the states of Colorado and Kansas.

COOPERATION.--Capacity tables provided by U.S. Army Corps of Engineers. Records prior to 1979 were furnished by the U.S. Army Corps of Engineers.

EXTREMES FOR PERIOD OF RECORD.--Maximum contents, 451,000 acre-ft, May 10, 1999, elevation, 3,860.57 ft; no contents at times many years.

EXTREMES FOR CURRENT YEAR.--Maximum contents, 45,400 acre-ft, Apr. 16, elevation, 3,809.78 ft; minimum contents, 20,300 acre-ft, Sept. 30, elevation, 3,801.10 ft.

Reservoir capacity table
(elevation, in feet, and contents, in acre-feet, effective Nov. 1, 1999)
Elevation
Contents
Elevation
Contents
3,785.0
235
3,820.0
86,400
3,790.0
2,410
3,830.0
144,000
3,795.0
8,300
3,840.0
222,000
3,800.0
17,800
3,850.0
323,000
3,810.0
46,200
3,860.0
448,000

Reservoir storage, acre feet 
WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY OBSERVATION AT 2400 HOURS
DAY
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
1

22,200

21,500

23,800

29,000

34,600

39,000

43,700

40,800

29,600

28,300

24,500

22,000

2

22,200

21,600

23,900

29,300

34,600

39,200

43,800

40,600

29,000

28,000

24,400

22,000

3

22,200

21,600

24,100

29,500

34,900

39,400

43,900

40,600

28,400

27,900

24,400

22,100

4

22,200

21,700

24,300

29,700

35,100

39,500

43,900

40,200

27,800

27,900

24,300

22,000

5

22,200

21,700

24,600

29,900

35,200

39,700

44,100

39,900

28,000

27,600

24,100

21,900

6

22,100

21,700

24,700

30,200

35,400

39,900

44,300

39,100

28,300

27,500

24,100

21,900

7

22,100

21,800

24,900

30,300

35,500

39,900

44,500

38,600

28,800

27,300

23,900

22,100

8

22,100

21,900

25,100

30,500

35,600

39,900

44,600

38,100

28,800

27,200

23,800

22,000

9

22,000

21,900

25,200

30,700

35,800

40,200

44,800

37,300

28,600

27,000

23,700

22,200

10

22,000

21,900

25,400

30,800

e35,900

40,300

44,900

36,800

28,500

26,900

23,700

22,100

11

22,000

21,900

25,600

30,900

36,000

40,500

44,900

36,200

28,600

26,700

23,800

22,000

12

21,900

22,000

25,700

31,200

36,200

40,700

44,900

35,700

28,900

26,700

23,800

21,900

13

21,900

22,000

25,900

31,300

36,400

40,800

44,900

35,100

29,500

26,600

23,600

21,900

14

21,800

22,000

26,100

31,500

36,600

41,000

44,900

34,600

29,900

26,600

23,400

21,800

15

21,800

22,100

26,300

31,700

36,700

41,100

45,100

34,100

30,300

26,400

23,200

21,900

16

21,800

22,100

26,400

e31,900

36,900

41,200

44,000

33,600

30,300

26,200

23,100

21,800

17

21,700

22,300

26,600

32,000

37,100

41,400

43,700

33,500

29,900

26,100

23,100

21,900

18

21,700

22,200

26,800

32,200

37,300

41,500

43,400

33,500

29,300

26,000

22,800

21,700

19

21,700

22,300

26,900

32,300

37,500

41,800

43,300

33,400

29,000

25,900

22,800

21,600

20

21,700

22,400

27,100

32,400

37,700

41,800

43,000

33,100

28,600

25,900

22,800

21,700

21

e21,700

22,500

27,200

32,600

37,900

42,000

42,600

33,100

28,600

25,800

22,800

21,700

22

21,600

22,700

27,300

32,700

37,900

42,100

42,300

33,200

28,700

25,500

22,600

21,600

23

21,700

22,600

27,500

32,800

38,100

42,100

42,300

33,200

28,400

25,500

22,400

21,500

24

e21,700

22,900

27,600

32,900

38,100

42,200

41,700

33,100

28,200

25,300

22,300

21,400

25

21,700

23,000

27,600

33,100

38,200

42,300

41,800

33,800

27,900

25,200

22,300

21,200

26

21,700

23,100

27,700

e33,300

38,400

42,400

41,900

33,900

27,800

25,000

22,200

21,000

27

21,800

23,200

27,800

e33,500

38,500

42,600

41,800

33,500

28,000

24,900

22,200

20,900

28

21,700

23,400

27,900

e33,700

38,800

42,900

41,500

32,700

28,300

24,900

22,100

20,700

29

21,700

23,500

28,100

e33,900

---

43,200

41,300

31,800

28,200

24,800

22,000

20,500

30

21,500

23,700

28,300

34,100

---

43,400

41,100

30,800

28,500

24,700

22,100

20,400

31

21,400

---

28,600

34,400

---

e43,500

---

30,100

---

24,700

22,000

---

MAX

22,200

23,700

28,600

34,400

38,800

43,500

45,100

40,800

30,300

28,300

24,500

22,200

MIN

21,400

21,500

23,800

29,000

34,600

39,000

41,100

30,100

27,800

24,700

22,000

20,400

e Estimated.


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Water Resources of Colorado
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Last Modified: April 28, 2004