USGS Water-Year Summary 2021
06479010 VERMILLION RIVER NEAR VERMILLION, SD
LOCATION - Lat 42°49'02", long 96°55'26" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 NE 1/4 sec.01, T.92 N., R.52 W., Clay County, SD, Hydrologic Unit 10170102, on left bank 30 ft downstream from bridge, 2.7 mi north of Vermillion, 2.9 mi upstream from Clay Creek, and 10.8 mi upstream from mouth.
DRAINAGE AREA - 2,254 mi² of which 478 mi² probably is noncontributing. (area was contributing during 1986-88, 1993-2002).
- WDR SD-10-1: Drainage area.
PERIOD OF RECORD - October 1983 to current year.
GAGE - Water-stage recorder and crest-stage gage. Gage datum is 1,121.65 ft above NAVD88. Prior to conversion to NAVD88, datum of gage was published as 1,121.12 ft above NGVD29, from levels by USGS.
EXTREMES FOR PERIOD OF RECORD - Minimum daily discharge, 3.6 ft³/s, Oct. 10, 1991, also Oct. 18, 1991.