USGS Water-Year Summary 2019
06402600 CHEYENNE RIVER NEAR BUFFALO GAP, SD
LOCATION - Lat 43°30'07.12", long 103°04'26.17" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.29, T.6 S., R.9 E., Custer County, SD, Hydrologic Unit 10120109, on upstream side of bridge, 5.8 mi upstream from Cottonwood Creek, and 12 mi east of Buffalo Gap, SD.
DRAINAGE AREA - 9,792 mi² of which 4 mi² probably is noncontributing.
- WDR SD-76-1: 1971-75(M), WDR SD-10-1: Drainage area.
PERIOD OF RECORD - October 1968 to September 1980, March 2007 to current year.
GAGE - Water-stage recorder. Datum of gage is 2,812.85 ft. above NAVD of 1988.