USGS Water-Year Summary 2021
11062800 Fontana Water Company Spill Channel from Afterbay, near Fontana, CA
LOCATION - Lat 34°09'20", long 117°23'41" referenced to North American Datum of 1927, San Bernardino County, CA, Hydrologic Unit 18070203, in Muscupiabe Grant, on left bank of spill channel, 0.10 mi downstream from Southern California Edison Company's Fontana Powerplant, and 3.6 mi northeast of Fontana.
PERIOD OF RECORD - December 1971 to current year. Records for December 1971 to September 2004 available in the files of the U.S. Geological Survey.
GAGE - Water-stage recorder and Parshall flume. Datum of gage is 1,580.90 ft above NAVD of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge, 68 ft³/s, Jan. 22, 1978; no flow at times in most years.