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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
11467002 Russian River at Johnsons Beach, at Guerneville, CA
LOCATION - Lat 38°29'58", long 122°59'50" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.32, T.8 N., R.10 W., Sonoma County, CA, Hydrologic Unit 18010110, on left bank at downstream side of old Highway 116 bridge, 0.1 mi upstream from Pocket Creek, 5.8 mi downstream from Hobson Creek, 6.5 mi upstream from Austin Creek, in Guerneville.
DRAINAGE AREA - 1,353 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 1939 to September 1954, published as "at Guerneville" (station 11467000). October 1995, to current year, stage only above 5.65 ft.
GAGE - Water-stage recorder. Datum of gage is 8.79 ft above NGVD of 1929 and 11.26 ft above NAVD of 1988.
REMARKS - Stage data for the period June 1 to Sept. 30 are affected by summer recreation dam. Flow regulated by Lake Mendocino, 82 mi upstream, and by Lake Sonoma, 31 mi upstream. Many diversions upstream from station for irrigation of about 29,000 acres. Flow also affected by diversion into basin (see REMARKS for East Fork Russian River stations 11461500 and 11462000) and by diversion for municipal use. See schematic diagram of Russian River Basin available from the California Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum elevation, 48.8 ft, Feb. 18, 1986.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 46.87 ft, Feb. 28, 1940.
