USGS Water-Year Summary 2021
06478690 WEST FORK VERMILLION RIVER NEAR PARKER, SD
LOCATION - Lat 43°24'56.3", long 97°12'17.5" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.10, T.99 N., R.54 W., Turner County, SD, Hydrologic Unit 10170102, on right bank 10 ft downstream from bridge, 3.7 mi northwest of Parker, and 13.9 mi upstream from confluence with East Fork Vermillion River.
DRAINAGE AREA - 378 mi².
- WDR SD-10-1: Drainage area.
PERIOD OF RECORD - August 1961 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,341 ft above NAVD88, from topographic map. Prior to conversion to NAVD88, datum was published as 1,340 ft above NGVD29, from topographic map. Prior to Oct. 11, 1973, nonrecording gage and crest-stage gage at same site and datum 1,340 ft above NGVD29, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Minimum daily discharge, 0.00 ft³/s, Oct. 6, 1961, no flow for many days in some years.