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Water-Year Summary for Site 11277300

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Mean,Med.)  
00060 Discharge(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30
 

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USGS Water-Year Summary 2019
11277300 Cherry Creek below Cherry Valley Dam, near Hetch Hetchy, CA
LOCATION - Lat 37°58'04", long 119°54'59" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.05, T.1 N., R.19 E., Tuolumne County, CA, Hydrologic Unit 18040009, Stanislaus National Forest, on right bank, 0.7 mile downstream from Cherry Valley Dam, 3.5 miles upstream from Eleanor Creek, 6.7 miles north of Early Intake, and 7.2 miles west of Hetch Hetchy Dam.
DRAINAGE AREA - 118 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1956 to current year.
GAGE - Water-stage recorder. Datum of gage is 4,337.08 ft above NGVD of 1929 (levels by city and county of San Francisco).
REMARKS - Flow regulated by Cherry Lake (station 11277200) 0.7 mi upstream. Diversion between Lake Eleanor (station 11277500) and Cherry Lake began Mar. 6, 1960. Diversion from Cherry Lake to Dion R. Holm Powerplant began Aug. 1, 1960. See schematic diagram of Tuolumne River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,460 ft³/s, Dec. 31, 2005, from rating curve extended above 4,000 ft³/s, gage height, 11.60 ft; minimum daily, 0.77 ft³/s, Dec. 1-4, 1988.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - May 2006 to current year. WATER TEMPERATURE: May 2006 to current year.
INSTRUMENTATION - New temperature sensor installed October 10, 2017. Water temperature recorder since May 24, 2006.
REMARKS - Water temperature is affected by regulation from Cherry Lake.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum recorded, 22.5°C, Sept.  3, 2017; minimum recorded, 0.8 °C, Feb. 2, 2008.