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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.
USGS Water-Year Summary 2024
06464100 KEYA PAHA RIVER NEAR KEYAPAHA, SD
LOCATION - Lat 43°07'45", long 100°06'24" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 SW 1/4 sec.17, T.96 N., R.78 W., Tripp County, SD, Hydrologic Unit 10150006, on left bank at downstream side of highway bridge, 2.0 mi northeast of Keyapaha, and 2.0 mi upstream from Sand Creek.
DRAINAGE AREA - 535 mi² of which 3 mi² probably is noncontributing.
REVISIONS HISTORY - WDR SD-10-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1981 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 2,231 ft above NAVD88, from topographic map. Prior conversion to NAVD88, datum was published as 2,230 ft above NGVD29, from topographic map.
REMARKS -
Record quality ratings may not be included in the water-year summary for approved records newer than 09/30/2018. Record quality is still being rated internally. For questions about record quality ratings, please send email to gs-w-d_NWISWeb_Data_Inquiries@usgs.gov. Satellite data-collection platform at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of 1952 reached a stage of about 14 ft, present datum, from information by local residents.
