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Water-Year Summary for Site 11429500

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Available Parameters
00060 Discharge(Mean)  
00060 Discharge(Mean) [(2)]  

Water year 2023: 2022-10-01 to 2023-09-30
 

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USGS Water-Year Summary 2023
11429500 Gerle Creek below Loon Lake Dam, near Meeks Bay, CA
LOCATION - Lat 39°00'20", long 120°18'52" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.05, T.13 N., R.15 E., El Dorado County, CA, Hydrologic Unit 18020128, in Eldorado National Forest, on right bank, 0.3 mi downstream from Loon Lake Dam, and 11 mi southwest of Meeks Bay.
DRAINAGE AREA - 8.01 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1910 to April 1914 (fragmentary), August 1962 to current year. Prior to August 1962, published as "near Rubicon Springs."
GAGE - Water-stage recorder and V-notch sharp-crested weir. Elevation of gage is 6,250 ft above NGVD of 1929, from topographic map. Prior to August 1962, nonrecording gage at site 1,400 ft upstream at different datum.
COOPERATION - Records were collected by Sacramento Municipal Utility District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2101.
REMARKS - Beginning in 1884, flow regulated by Loon Lake (station 11429350). Original dam was dismantled during September and October 1962 to permit construction of a new earthfill dam, which was completed Dec. 27, 1963. Loon Lake receives water from Rubicon River via Buck-Loon Tunnel (station 11428300). Since August 1971, most of the water is diverted past the station via Loon Lake Powerplant and returns to Gerle Creek at Gerle Creek Dam. See schematic diagram of Middle Fork American and Rubicon River Basins available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,240 ft³/s, unregulated, Feb. 1, 1963, gage height, 12.65 ft, from rating curve extended above 970 ft³/s, on basis of slope-area measurement of peak flow; no flow Oct. 15, 1913. Maximum discharge since construction of Loon Lake Dam in 1963, 1,050 ft³/s, June 5, 1969, gage height, 9.03 ft; minimum daily, 3.6 ft³/s, Sept. 27, 28, Nov. 3, 1977.