USGS Water-Year Summary 2023
06410500 RAPID CREEK ABOVE PACTOLA RESERVOIR, AT SILVER CITY, SD
LOCATION - Lat 44°05'05", long 103°34'48" referenced to North American Datum of 1927, in SW 1/4 SE 1/4 sec.36, T.2 N., R.4 E., Pennington County, SD, Hydrologic Unit 10120110, on right bank, 0.8 mi west of Silver City, and 3.0 mi downstream from Slate Creek.
DRAINAGE AREA - 293 mi².
- WDR SD-10-1: Drainage area.
PERIOD OF RECORD - October 1953 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of the gage is 4,622.18 ft. above North American Vertical Datum of 1988 (NAVD88). Prior to Oct. 1, 2020, datum was published as 4,620.00 ft. above NGVD of 1929 (Bureau of Reclamation benchmark).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,060 ft³/s, from rating curve extended above 1,000 ft³/s, on basis of slope-area measurement of peak flow, May 15, 1965, gage height, 10.44 ft.