USGS Water-Year Summary 2023
11293460 Lake Alpine near Big Meadows, CA
LOCATION - Lat 38°28'17", long 120°00'10" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.09, T.7 N., R.18 E., Alpine County, CA, Hydrologic Unit 18040010, in Stanislaus National Forest, at outlet structure on upstream face of Lake Alpine Dam on Silver Creek, and 7.2 mi northeast of Big Meadows.
DRAINAGE AREA - 5.34 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1986 to current year. Unpublished records for water years 1981-86 available in files of the U.S. Geological Survey.
GAGE - Water-stage recorder since Oct. 1, 1999. Datum of gage is 7,260.07 ft above NGVD of 1929 (levels by Pacific Gas and Electric Company).
COOPERATION - Records were collected by Northern California Power Agency, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 11563.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 4,260 acre-ft, June 28, 2011, Feb. 8, 2017, maximum gage height, 42.90 ft, Feb. 8, 2017; minimum, 992 acre-ft, Mar. 21, 2008, gage height, 20.02 ft.