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Water-Year Summary for Site 11250100

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
11250100 Millerton Lake at Friant, CA
LOCATION - Lat 37°00'00", long 119°42'13" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.05, T.11 S., R.21 E., Fresno County, CA, Hydrologic Unit 18040006, near center of Friant Dam, on San Joaquin River, just upstream from Cottonwood Creek, and 0.9 mi northeast of Friant.
DRAINAGE AREA - 1,638 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1941 to current year. Monthend contents only for some periods, published in WSP 1315-A.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Bureau of Reclamation). Prior to May 29, 1944, nonrecording gage on left bank at same datum.
COOPERATION - Records and capacity table were provided by U.S. Bureau of Reclamation.
REMARKS - Reservoir is formed by gravity-type concrete dam with spillway near center, completed in December 1942. Control valves installed in February 1944, and spillway gates installed in November 1947. Usable capacity, 503,200 acre-ft, between elevations 375.4 ft, invert of river outlet, and 578.0 ft, top of drum-type spillway gates. 17,400 acre-ft not available for release. Millerton Lake is one of the storage units in the Central Valley Project. Records, including extremes, represent total contents at 2400 hours. See schematic diagram of lower San Joaquin River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 528,800 acre-ft, July 21, 1998, elevation, 579.68 ft, (maximum instantaneous contents, 530,500 acre-ft, at 1300 hours, Jan. 3, 1997, elevation, 580.01 ft); minimum since lake first filled, 133,600 acre-ft, Apr. 11, 1969, elevation, 467.81 ft.