Click
to
hide
Water-Year
Summary
instructions
and
information
- 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 -
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 July 10 - 17, 27 to Aug. 8 & Sept. 4 - 30, 2017, which are fair, and those for estimated discharges, which are poor. 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.
