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Water-Year Summary for Site 11231550

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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
11231550 Mono Creek Conduit near Mono Hot Springs, CA
LOCATION - Lat 37°21'36", long 118°59'51" referenced to North American Datum of 1927, Fresno County, CA, Hydrologic Unit 18040006, unsurveyed, in Sierra National Forest, on left bank, 40 ft upstream from diversion dam, 1.0 mi southwest of Lake Thomas A. Edison, and 2.5 mi northeast of Mono Hot Springs.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1985 to current year. October 1970 to September 1971 available in the files of the U.S. Geological Survey.
GAGE - Discharge is computed as difference between flow at Mono Creek below Lake Thomas A. Edison (station 11231500) and Mono Creek below diversion dam (station 11231600), or during periods of indeterminate flow, discharge is computed as difference between flow at Bear Creek Conduit near Lake Thomas A. Edison (station 11230520) and Mono Bear Conduit near Mono Hot Springs (station 11231551). Datum of conduit invert is 7,338 ft above NGVD of 1929 (levels by Southern California Edison Co.).
COOPERATION - Records were collected by Southern California Edison Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project nos. 67 and 120.
REMARKS - Conduit diverts at diversion dam on Mono Creek to Ward Tunnel and Huntington Lake (station 11236000) via Portal Powerplant (station 11235500) for further power development in Big Creek powerplants. See schematic diagram of upper San Joaquin River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 500 ft³/s, Jan. 2, 2006; minimum daily, -18 ft³/s, June 11, 1993 (reverse flow from Bear Creek Conduit).