USGS Water-Year Summary 2020
11276900 Tuolumne River below Early Intake, near Mather, CA
LOCATION - Lat 37°52'54", long 119°58'09" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.02, T.1 S., R.18 E., Tuolumne County, CA, Hydrologic Unit 18040009, in Stanislaus National Forest, on left bank, 0.6 mi upstream from Cherry Creek, 0.7 mi downstream from Robert C. Kirkwood Powerplant and Hetch Hetchy Aqueduct, and 6.3 mi west of Mather.
DRAINAGE AREA - 487 mi².
PERIOD OF RECORD - October 1966 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 2,200 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 18,200 ft³/s, Jan. 3, 1997, gage height, 12.33 ft; minimum daily, 12 ft³/s, Nov. 28-30, 1976.
PERIOD OF RECORD
CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years June 2006 to current year.
INSTRUMENTATION - Water-temperature recorder since June 1, 2006.