USGS Water-Year Summary for Site 11467000

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Med.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Med.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Med.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Med.,Max.,Min.)
	63680 Turbidity, Form Neph(Med.,Min.,Max.) [TS087: YSI 6136]
	63680 Turbidity, Form Neph(Med.,Min.,Max.) [TS213: YSI EXO]

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

11467000 Russian River at Hacienda Bridge near Guerneville, CA

LOCATION - Lat 38°30'31", long 122°55'36" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.26, T.8 N., R.10 W., Sonoma County, CA, Hydrologic Unit 18010110, on right bank, at downstream side of Hacienda Bridge, 0.1 mi upstream from Hobson Creek, and 3.8 mi east of Guerneville.

DRAINAGE AREA - 1,338 mi².

REVISIONS HISTORY - WSP 1395: Drainage area at former site. WSP 1929: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1939 to current year. Monthly discharge only for some periods, published in WSP 1315-B. Published as "at Guerneville," prior to October 1954, and as "near Guerneville," October 1954 to September 2017.

GAGE - Water-stage recorder. Datum of gage is 20.14 ft above NGVD of 1929. Prior to Oct. 1, 1954, nonrecording gage at bridge 5.3 mi downstream at datum 8.58 ft lower. Oct. 1, 1954, to Oct. 23, 1974, at site 0.7 mi downstream at datum 2.75 ft lower. Supplementary water-stage recorder 2.1 mi downstream used during periods of low flow, 1948-54.

REMARKS - Flow regulated by Lake Mendocino 77 mi upstream, beginning November 1958, and by Lake Sonoma 26 mi upstream, beginning October 1983. 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), and by diversion for municipal use at Wohler Pumping Plant 4.0 mi upstream beginning in May 1959. See schematic diagram of Russian River Basin available from the California Water Science Center.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 102,000 ft³/s, Feb. 18, 1986, gage height, 48.56 ft, from rating curve extended above 57,000 ft³/s, maximum gage height, 49.7 ft, Dec. 23, 1955, site and datum then in use, from floodmarks; minimum daily discharge, 0.75 ft³/s, May 6, 1977.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

DISCRETE WATER-QUALITY DATA:
CHEMICAL DATA: Water years 1951-53 (partial-record station), October 1953 to September 1965, October 1966-67, October 1969 to September 1974 (partial-record station), October 1974 to September 1995 . Published as "at Guerneville" in 1961-65.
BIOLOGICAL DATA: Water years 1975-81.
TURBIDITY: Water years 1967-95, 2002 to current year.
SEDIMENT DATA: Water years 1966-95.

CONTINUOUS WATER-QUALITY DATA:
DISSOLVED OXYGEN: Water years January 2002 to current year.
pH: Water years January 2002 to current year.
SPECIFIC CONDUCTANCE: Water years October 1973 to February 1982, January 2002 to current year.
WATER TEMPERATURE: Water years January 1964 to September 1986, January 2002 to current year.
TURBIDITY: Water years January 2002 to current year.
SEDIMENT DATA: Water years April 1967 to September 1967, October 1969 to May 1986.