USGS Water-Year Summary 2023
11224000 Middle Fork San Joaquin River near Mammoth Lakes, CA
LOCATION - Lat 37°37'55", long 119°05'11" referenced to North American Datum of 1983, Madera County, CA, Hydrologic Unit 18040006, unsurveyed, on left bank, at Devil's Postpile, 0.1 mi east of State Route 203, and 5.5 mi west of Mammoth Lakes.
DRAINAGE AREA - 43.8 mi².
PERIOD OF RECORD - October 2009 to current year. Prior to October 2010, seasonal records only.
GAGE - Water-stage recorder. Elevation of gage is 7,580 ft above NGVD of 1929, from topographic map.
EXTREMES FOR PERIOD OF RECORD - Since October 2010, Maximum discharge, 2,800 ft³/s, Oct. 30, 2016, gage height, 7.68 ft; minimum daily, 3.4 ft³/s, Oct. 26-30, 2014.
PERIOD OF RECORD - WATER TEMPERATURE: October 2021 to current year.