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Water-Year Summary for Site 11229500

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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
11229500 Ward Tunnel Intake at Florence Lake, CA
LOCATION - Lat 37°16'20", long 118°58'17" referenced to North American Datum of 1927, Fresno County, CA, Hydrologic Unit 18040006, unsurveyed, in Sierra National Forest, in gatehouse at entrance of tunnel, 0.4 mi south of left abutment of Florence Lake Dam, and 16 mi northeast of town of Big Creek.
REVISIONS HISTORY - WSP 1515: 1931.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1925 to current year. Monthly discharge only for some periods, published in WSP 1315-A. Published as "Florence Lake Tunnel at Intake" 1925-36 and as "Ward Tunnel at Intake" 1937-60.
GAGE - Water-stage recorder, concrete control, and Venturi meter. Elevation of gage is 7,213.89 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 - Ward Tunnel diverts from Florence Lake (station 11229600), a reservoir on South Fork San Joaquin River, to Huntington Lake (station 11236000) via Portal Powerplant (station 11235500). Water used again 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, 1,990 ft³/s, Apr. 30, 1926; no flow at times.