USGS Water-Year Summary 2019
11052500 Mill Creek Power Canal Nos. 2 and 3 near Yucaipa, CA
LOCATION - Lat 34°05'23", long 117°00'49" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.17, T.1 S., R.1 W., San Bernardino County, CA, Hydrologic Unit 18070203, on penstock, 100 ft downstream from Mill Creek No. 3 forebay, and 4.2 mi northeast of Yucaipa.
PERIOD OF RECORD - January 1919 to September 1938, October 1947 to September 1989, October 1993 to current year. Monthly discharge only for January 1919 to September 1938 and October 1947 to September 1960. Stand-alone records for this station for October 1973 to September 1986 are available in files of the U.S. Geological Survey. See WDR CA-2003-1 for stand-alone records for water years 1987-1989.
GAGE - Acoustic-velocity meter on penstock. Elevation of gage is 4,840 ft above NGVD of 1929, from topographic map. Prior to October 1993, water-stage recorder and Parshall flume below powerplant at terminus of penstock 1.5 mi downstream, at different datum. October 1993 to September 1995, water-stage recorder and Parshall flume at auxiliary gage near Canal No. 3 intake 4.5 mi upstream, at different datum.
COOPERATION - Records were provided by Southern California Edison Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project No. 1934.
EXTREMES FOR PERIOD OF RECORD - Since water year 1994, maximum daily discharge, 41 ft³/s, May 6, 1995; no flow at times in some years.