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Water-Year Summary for Site 06446000

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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: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 43°15'17.5", long 102°49'36.8" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.24, T.38 N., R.47 W., UNSPECIFIEDSD, Hydrologic Unit 10140201, on right bank at downstream side of bridge, 3.0 mi downstream from Blacktail Creek, and 7.0 mi northwest of Oglala.
DRAINAGE AREA - 2,156 mi².
REVISIONS HISTORY - WDR SD-10-1: Drainage area.
PERIOD OF RECORD - May 1943 to current year.
GAGE - Water-stage recorder. Datum of gage of gage is 2,855.11 ft above NAVD88.  Prior to conversion to 88 NAVD, datum of gage was 2,853.54 ft above NGVD of 1929. Prior to May 6, 1947, nonrecording gage at same site and datum 2,853.54 ft above NGVD of 1929.
REMARKS - Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For water years 2014 onward, records good except for estimated discharges, which are poor, unless otherwise noted. Some diversions for irrigation upstream from station. Satellite data-collection platform at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6920 ft³/s, May 16, 2015, from rating curve extended above 3,400 ft³/s, gage height 22.65 ft, minimum daily discharge, 0.00 ft³/s, Sept. 25, 1952, no flow at times in most years.