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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
06430770 SPEARFISH CREEK NEAR LEAD, SD
LOCATION - Lat 44°17'57.24", long 103°52'03.66" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.22, T.4 N., R.2 E., Lawrence County, SD, Hydrologic Unit 10120203, on right bank 0.5 mi below confluence of East Spearfish Creek, in the vicinity of Cheyenne Crossing, approximately 5 mi southwest of Lead.
DRAINAGE AREA - 64.8 mi².
REVISIONS HISTORY - WDR SD-10-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1988 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 5,295.68 ft. above North American Vertical Datum of 1988 (NAVD88). Prior to conversion to NAVD 88 datum was published as 5,310 ft above NGVD of 1929, 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 for estimated discharges, which are poor, unless otherwise noted. Occasional minor upstream diversions by Lead-Deadwood Sanitary District out of drainage basin into Whitewood Creek Basin. Upstream diversions by Homestake Mining Company discontinued March 2003. Satellite data-collection platform at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge, 673 ft³/s, May 14, 1965, from contracted-opening measurement of peak flow 2.0 mi downstream.
