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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
11465750 Laguna de Santa Rosa near Sebastopol, CA
LOCATION - Lat 38°25'32", long 122°49'41" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.26, T.7 N., R.9 W., Sonoma County, CA, Hydrologic Unit 18010110, on right bank, upstream side of Occidental Road bridge, and 1.6 mi north of Sebastopol.
DRAINAGE AREA - 79.6 mi².
REVISIONS HISTORY - WDR US-2006: 2000, 2003-05 (peaks above base); WDR US-2008: 2006 (maximum).
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1998 to current year.
WATER TEMPERATURE: Water year 2007.
SEDIMENT DATA: Water years 2007-08.
GAGE - Water-stage recorder and velocity meter. Datum of gage is NAVD of 1988.
REMARKS - No regulation or diversion upstream of station. High-flow periods are affected by backwater. See schematic diagram of Russian River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,690 ft³/s, Dec. 31, 2005, gage height, 72.63 ft, from backwater; maximum gage height, 75.20 ft Feb. 27, 2019 minimum daily mean discharge, -1050 ft³/s, Feb. 27, 2019.
