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Water-Year Summary for Site USGS 11277100

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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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
11277100 Lake Eleanor Diversion Tunnel to Cherry Lake, near Hetch Hetchy, CA
LOCATION - Lat 37°58'47", long 119°52'51" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.34, T.2 N., R.19 E., Tuolumne County, CA, Hydrologic Unit 18040009, Yosemite National Park, on west side of Lake Eleanor, 0.5 mile northwest of Eleanor Dam, and 6.0 miles northwest of Hetch Hetchy Reservoir.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1996 to August 1996, October 1996 to September 1999, November 2000 to September 2001, October 2002 to September 2017.
GAGE - Ultrasonic-velocity meter system. Elevation of gage is 4,670 ft above NGVD of 1929, from topographic map.
REMARKS - Flow is gravity flow or regulated by pump station at Cherry Lake (station 11277200). Diversion from Lake Eleanor (station 11277500) to Cherry Lake began in March 1960. See schematic diagram of Tuolumne River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 816 ft³/s, Feb. 17, 2001; no flow at times each year.