USGS Water-Year Summary for Site 07137500

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

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.

REMARKS - Combined flow of river and Frontier Ditch (station 07137000) represents entire flow that enters Kansas. Flow regulated since 1948 by John Martin Reservoir (station 07130000). Natural flow of stream affected by transmountain diversions, storage reservoirs, power developments, groundwater withdrawals and diversions for irrigation of about 500,000 acres, and return flow from irrigated areas. Satellite telemeter at station.

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.

REMARKS - Interruptions in record are due to ice conditions or malfunction of the recording instrument or sensors.

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.