USGS Water-Year Summary 2021
11463170 Big Sulphur Creek at Geysers Resort, near Cloverdale, CA
LOCATION - Lat 38°47'52", long 122°48'05" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.19, T.11 N., R.8 W., Sonoma County, CA, Hydrologic Unit 18010110, Located on left bank, 400 ft downstream from unnamed tributary, and 12 mi east of Cloverdale.
DRAINAGE AREA - 13.1 mi².
- WDR CA-98-2: 1995-96 (peaks above base).
PERIOD OF RECORD - October 1980 to current year.
GAGE - Water-stage recorder. Elevation of gage is 1,430.10 ft above NGVD of 1929, from levels.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,010 ft³/s, Jan. 1, 1997, gage height, 9.78 ft, from rating curve extended above 1,200 ft³/s, on basis of culvert computation of peak flow; minimum daily, 0.08 ft³/s, Aug. 31, 1983.