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Water-Year Summary for Site 06482020

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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 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
06482020 BIG SIOUX RIVER AT NORTH CLIFF AVENUE, AT SIOUX FALLS, SD
LOCATION - Lat 43°34'01.3", long 96°42'39.6" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.10, T.101 N., R.49 W., Minnehaha County, SD, Hydrologic Unit 10170203, on right bank 20 ft downstream from bridge on North Cliff Avenue and 4.1 mi upstream from Slip Up Creek.
DRAINAGE AREA - 4,662 mi² of which 884 mi² probably is noncontributing. documented runoff occurred during 1994-2002 water years for 213 mi² of the usually noncontributing area.
REVISIONS HISTORY - WDR SD-10-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1962 to September 1971 (gage heights and discharge measurements only in files of U.S. Army Corps of Engineers). October 1971 to current year.
GAGE - Water-stage recorder.  Datum of gage is 1,295.08 ft above NAVD88. Prior to conversion to NAVD88 datum was published as 1,294.18 ft above NGVD29 (levels by U.S. Army Corps of Engineers). Prior to Dec. 15, 1971, non-recording gage 20 ft upstream at datum 1,294.18 ft above NGVD29.
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 those for estimated discharges, which are poor. Flow is regulated by a flood-control diversion channel, which starts 16.1 river miles upstream from gage, just north of Foss Air Field, and rejoins the river 0.4 mi upstream from gage since July 1961. Satellite data-collection platform at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Apr. 10, 1969, reached a stage of 27.45 ft, discharge, 40,700 ft³/s.