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Water-Year Summary for Site 10287760

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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
10287760 Ellery Lake near Lee Vining, CA
LOCATION - Lat 37°56'08", long 119°13'50" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.21, T.1 N., R.25 E., Mono County, CA, Hydrologic Unit 18090101, in Inyo National Forest, in valve house at base of Rhinedollar Dam, on Lee Vining Creek, and 6.3 mi west of town of Lee Vining.
DRAINAGE AREA - 16.7 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1990 to current year. Unpublished records prior to October 1990 available in files of Southern California Edison Co.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 (levels by Southern California Edison Co.).
COOPERATION - Records collected by Southern California Edison Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 1388.
REMARKS - Reservoir is formed on natural lake by rock-fill dam completed in 1927. Contents based on capacity table dated Aug. 18, 1981. Usable capacity, 494 acre-ft, between elevations 9,482.53 ft, invert of outlet, and 9,492.53 ft, crest of spillway. Radial gates are occasionally closed, which increases elevation to 9,496.53 ft and capacity to 749 acre-ft. Lake receives water from Saddlebag and Tioga Lakes (stations 10287650 and 10287700) and releases it via Poole Powerplant Conduit (station 10287762) to Poole Powerplant. Figures given represent usable contents at 2400 hours.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 677 acre-ft, Jan. 2, 1997, elevation, 9,495.43 ft; minimum, no storage Oct. 26 to Nov. 12, 2006, Sept. 12-16, 2009.