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Water-Year Summary for Site 06402500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 43°28'00", long 103°18'20" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.05, T.7 S., R.7 E., Fall River County, SD, Hydrologic Unit 10120109, on left bank 1.5 mi south of Buffalo Gap, SD and 4.5 mi upstream from mouth.
DRAINAGE AREA - 127 mi².
REVISIONS HISTORY - WSP 956: 1941. WSP 1309: 1939-40(M), 1947(M). WDR SD-10-1: Drainage area.
PERIOD OF RECORD - Oct. 1937 to current year. Monthly discharge only for Oct., Nov., 1957, published in WSP 1309.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 3,151.87 ft above NAVD of 1988. Prior to June 20, 1939, nonrecording gage at site 0.8 mi downstream at different datum.
REMARKS - Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For years 2014 onward, records good except for Oct. 1, 2013 to Sept. 30, 2014, and Oct. 25, 2017 to Nov. 17, 2018, and Oct. 1, 2019 to Mar. 18, 2020 which are fair, and estimated discharges, which are poor, unless otherwise noted. Nearly all flow is diverted above station during irrigation season. Satellite data-collection platform at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in 1927 reached a stage of 18.0 ft, former site and datum, from information by local residents.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 11,700 ft³/s, Sept. 4, 1938, from rating curve extended above 11 ft³/s, on basis of slope-area measurement, gage height, 16.46 ft (site and datum then in use); minimum daily discharge, 0.00 ft³/s, July 29, 1952, no flow at times in some years.