USGS Water-Year Summary 2021
11466170 Matanzas Creek at Santa Rosa, CA
LOCATION - Lat 38°26'20", long 122°42'05" referenced to North American Datum of 1927, Sonoma County, CA, Hydrologic Unit 18010110, in Cabeza de Santa Rosa Grant, on right bank, 5 ft downstream of bridge on Brookwood Avenue, in Santa Rosa.
DRAINAGE AREA - 21 mi².
PERIOD OF RECORD - November 2002 to current year (seasonal records only). Stage only November 2002 to April 2004.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,700 ft³/s, Dec. 31, 2005, gage height 169.40 ft; minimum daily discharge, 0.01 ft³/s, Oct. 1, 9-11, 2009.