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 Unpublished records for water years 1982-84 available in files of the U.S. Geological Survey.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.