USGS Water-Year Summary 2021
06433000 REDWATER RIVER ABOVE BELLE FOURCHE, SD
LOCATION - Lat 44°40'02", long 103°50'20" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.11, T.8 N., R.2 E., Butte County, SD, Hydrologic Unit 10120203, on right bank near downstream end of bridge on old U.S. Highway 212 in Belle Fourche, 0.5 mi upstream from Hay Creek, and 0.9 mi upstream from mouth.
DRAINAGE AREA - 927 mi².
- WSP 1389: 1954 (maximum gage height only). WDR SD-10-1: Drainage area.
PERIOD OF RECORD - November 1945 to current year. Daily discharges for October 1946 estimated; yearly discharge published in WSP 1309 does not include October. Prior to October 1960, published as Redwater Creek above Belle Fourche.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 3,008.75 ft above NAVD of 1988. Prior to Dec. 13, 1946, nonrecording gage at same site and datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 16,400 ft³/s, from rating curve extended above 6,000 ft³/s, on basis of slope-area measurement of peak flow, June 16, 1962, gage height, 11.69 ft; minimum daily discharge, 0.00 ft³/s, May 1, 1981, no flow at times in 1960, 1968-69, 1981-82, and 1988.