USGS Water-Year Summary 2021
11465660 Copeland Creek at Rohnert Park, CA
LOCATION - Lat 38°20'36", long 122°42'03" referenced to North American Datum of 1927, Sonoma County, CA, Hydrologic Unit 18010110, in Cotate Grant, on left bank, downstream of footbridge, 0.2 mi downstream of Seed Farm Drive, in Rohnert Park.
DRAINAGE AREA - 5.48 mi².
- WDR US-2008: 2007 (instantaneous maximum discharge).
PERIOD OF RECORD - October 2006 to current year (seasonal records only).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 100 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 672ft³/s, Dec. 15, 2016, gage height 9.45ft; no flow several days each year.