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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
06403850 GRIZZLY BEAR CREEK NEAR KEYSTONE, SD
LOCATION - Lat 43°52'41", long 103°26'14" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 NW 1/4 sec.17, T.2 S., R.6 E., Pennington County, SD, Hydrologic Unit 10120109, on downstream right wingwall of Highway 16A bridge and 1.2 mi southwest of Keystone.
DRAINAGE AREA - 8.84 mi².
REVISIONS HISTORY - WDR SD-10-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - 1998-present.
GAGE - Seasonal water-stage recorder. Elevation of gage is 4,490.87 ft. above North American Vertical Datum of 1988 (NAVD88), from Class II rapid-static survey. METWARN station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 962 ft³/s, from rating curve extended above 430 ft³/s, Oct. 11, 2013, gage height, 6.32 ft.
