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USGS Water-Year Summary 2024
10292500 Bridgeport Reservoir near Bridgeport, CA
LOCATION - Lat 38°19'30", long 119°12'40" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.34, T.6 N., R.25 E., Mono County, CA, Hydrologic Unit 16050301, in Toiyabe National Forest, at Bridgeport Dam on East Walker River, and 4.5 mi north of Bridgeport.
DRAINAGE AREA - 358 mi².
REVISIONS HISTORY - WSP 1180: 1949. WSP 1927: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Mar. 1926 to current year. Month end contents only for some periods, published in WSP 1314.
GAGE - Water-stage recorder. Datum of gage is 6,400 ft above local datum. To convert the local datum to NGVD29 subtract 5.25 feet. To convert the local datum to NAVD88 subtract 0.71 feet.
REMARKS - Reservoir is formed by earthfill, rock-faced dam. Storage began Dec. 08, 1923. Dam completed in Nov. 1924. Capacity, 42,460 acre-ft between elevations 6,415 ft, approximate elevation of bottom of reservoir, and 6,461 ft. Crest of spillway is at elevation 6,460.75 ft; however, there are four siphons that become operative prior to reaching this spillway. Elevation of sill of outlet gate, 6,412 ft. No dead storage. Figures given herein represent total contents. Water is used for irrigation by Walker River Irrigation District.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 44,880 acre-ft, Jun. 16, 1974, elevation 6,460.78 ft; no usable contents at times in water years 1929, 1930, 1960, 1977, 1988, and 1989.
