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Water-Year Summary for Site 11395200

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
11395200 South Fork Feather River below Diversion Dam, near Strawberry Valley, CA
LOCATION - Lat 39°38'51", long 121°07'04" referenced to North American Datum of 1927, in NE 1/4 SE 1/4 sec.30, T.21 N., R.8 E., Plumas County, CA, Hydrologic Unit 18020123, in Plumas National Forest, on left bank, 0.1 mi downstream from diversion dam, 0.2 mi downstream from unnamed tributary, 3.1 mi upstream from Rock Creek, and 5.8 mi north of Strawberry Valley.
DRAINAGE AREA - 37.7 mi².
REVISIONS HISTORY - WDR CA-80-4: 1976 (instantaneous maximum discharge).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1960 to current year.
GAGE - Water-stage recorder and since May 8, 1987, sharp-crested rectangular weir. Datum of gage is 3,535.02 ft above NGVD of 1929 (levels by Oroville-Wyandotte Irrigation District).
COOPERATION - Records provided by South Feather Water and Power Agency, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2088.
REMARKS - Flow regulated by Little Grass Valley Reservoir (station 11395020) since October 1961. South Fork Diversion Tunnel, maximum capacity, about 600 ft³/s, 500 ft upstream, diverts to Sly Creek Reservoir (station 11395400); diversion began in November 1961. See schematic diagram of South Fork Feather River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 11,300 ft³/s, Jan. 1, 1997, gage height unknown, from computation of peak flow over diversion dam; minimum daily, 0.30 ft³/s, Dec. 25, 1962, to Jan. 2, 1963, Mar. 1-3, 1963, during initial operation of Little Grass Valley Reservoir; since operation stabilized in 1964, 0.70 ft³/s, Jan. 18, 1968.