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Water-Year Summary for Site 11316700

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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
11316700 North Fork Mokelumne River below Electra Diversion Dam, near West Point, CA
LOCATION - Lat 38°25'15", long 120°32'56" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.33, T.7 N., R.13 E., Amador County, CA, Hydrologic Unit 18040012, on right bank, 300 ft downstream from Electra Diversion Dam, and 2.0 mi northwest of West Point.
DRAINAGE AREA - 365 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1985 to current year (low-flow records only). Unpublished records for water years 1982-84 available in files of the U.S. Geological Survey.
GAGE - Water-stage recorder and concrete control. Elevation of gage is 1,980 ft above NGVD of 1929, from topographic map. Prior to Sept. 29, 2003, at different datum.
COOPERATION - Records were collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 137.
REMARKS - No records computed above 2,200 ft³/s. Flow regulated since 1931 by numerous reservoirs and diversions upstream. Most of the water is diverted at Electra Diversion Dam to Electra Powerplant. See schematic diagram of Mokelumne River Basin available from the California Water Science Center.