USGS Water-Year Summary 2021
11466320 Santa Rosa Creek at Willowside Road, near Santa Rosa, CA
LOCATION - Lat 38°26'43", long 122°48'22" referenced to North American Datum of 1927, in NW 1/4 sec.13, T.7 N., R.9 W., Sonoma County, CA, Hydrologic Unit 18010110, on right bank, upstream side of Willowside Road bridge, 1.6 mi upstream of the confluence of Laguna de Santa Rosa, and 5.4 mi west of Santa Rosa.
DRAINAGE AREA - 77.6 mi².
- WRD CA-01-2: 1999-2000 (peaks above base).
PERIOD OF RECORD - December 1998 to current year.
SEDIMENT DATA: Water years 2007-08 (storm season only).
GAGE - Water-stage and recorder. Datum of gage is NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,100 ft³/s, Feb. 26, 2019, gage height, 72.10 ft; peak gage height, 72.78, Feb. 27, 2019, from backwater; no flow on several days.