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.