USGS Water-Year Summary 2021
08104650 Lake Georgetown near Georgetown, TX
LOCATION - Lat 30°40'03", long 97°43'38" referenced to North American Datum of 1927, Williamson County, TX, Hydrologic Unit 12070205, at North San Gabriel Dam, on North Fork San Gabriel River, 2.5 mi upstream from Middle Fork San Gabriel River, 3.7 mi northwest of Georgetown, and 4.4 mi upstream from confluence with South Fork San Gabriel River.
DRAINAGE AREA - 247 mi².
PERIOD OF RECORD - Mar. 1980 to Sept. 2000 (contents furnished by U.S. Army Corps of Engineers), Oct. 2000 to Sept. 2002 (daily mean contents), Oct. 2002 to current year. .
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Oct. 1980 to Aug. 1989.
BIOCHEMICAL DATA: Oct. 1980 to Aug. 1989.
GAGE - Water-stage recorder. Datum of gage is 0 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to May 13, 1980, nonrecording gage at present site and datum. Satellite telemeter at station.
COOPERATION - Prior to Oct. 1, 2000, record of contents furnished by the U.S. Army Corps of Engineers and reviewed by the U.S. Geological Survey. A new capacity table, provided by the Texas Water Development Board, was put into use Oct. 1, 1995.
EXTREMES FOR PERIOD OF RECORD - Mar. 1980 to Sept. 2002: Maximum contents, 136,900 acre-ft, Mar. 4, 1992; minimum contents after initial filling, 13,990 acre-ft, Oct. 15 Nov. 2, 2000; Mar. 1980 to current year: maximum elevation, 835.86 ft, Mar. 4, 1992; minimum elevation, 765.56 ft, Oct. 21, 2011.