USGS Water-Year Summary 2024
07137500 ARKANSAS RIVER NEAR COOLIDGE, KS
LOCATION - Lat 38°01'39", long 102°00'40" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 NW 1/4 sec.26, T.23 S., R.43 W., Hamilton County, KS, Hydrologic Unit 11030001, on right bank at downstream side of county highway bridge, 1.0 mi south of Coolidge, 1.9 mi downstream from Colorado-Kansas State line, and at mile 1,099.3 .
DRAINAGE AREA - 25,410 mi² of which 1,708 mi² probably is noncontributing.
REVISIONS HISTORY - WSP 1341: 1903, drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - May to October 1903, March to May 1921, October 1950 to current year. Monthly discharge only for some periods, published in WSP 1311.
GAGE - Water-stage recorder. Datum of gage is 3331.91 ft above NAVD88. May 5 to Oct. 31, 1903, nonrecording gage, and Mar. 1 to May 31, 1921, water-stage recorder at present site at different datum. Oct. 1, 1950, to Mar. 31, 1966, water-stage recorder at site 0.3 mi upstream at datum 3.00 ft higher.
EXTREMES FOR PERIOD OF RECORD - Flood of June 17, 1965 reached a stage of 14.8 ft gage datum (from flood marks). Discharge 158,000 cu ft per sec from rating curve extended above 13,000 cu ft per sec on basis of slope-area measurement of peak flow.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1964-68, 1970-73, 1975-81, July 1999 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: November 1963 to September 1968, January 1976 to September 1981, October 2000 to current year.
WATER TEMPERATURE: November 1963 to September 1968, October 1976 to September 1981, July 1999 to current year.
INSTRUMENTATION - Multiparameter water-quality monitor.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 6,800 miscrosiemens/cm, Mar. 29, 1978; minimum, 184 microsiemens/cm, Aug. 30, 2002.
WATER TEMPERATURE: Maximum, 38.1°C, Aug. 1, 2012; minimum, -0.2°C, Jan. 5, 2005.