USGS Water-Year Summary 2021
11070270 Perris Valley Storm Drain at Nuevo Road, near Perris, CA
LOCATION - Lat 33°48'04", long 117°12'19" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.21, T.4 S., R.3 W., Riverside County, CA, Hydrologic Unit 18070202, on right bank, 1.9 mi northeast of Perris, and 2.0 mi upstream from San Jacinto River.
DRAINAGE AREA - 93.3 mi².
- WDR CA-92-1: 1991 (instantaneous maximum discharge).
PERIOD OF RECORD - October 1969 to September 1975, October 1989 to September 1997, and October 1998 to current year.
PRECIPITATION DATA: Water years 1970-75, 1990-1997.
GAGE - Water-stage recorder and concrete control. Datum of gage is 1405.37 ft above NAVD of 1988. October 1998 to September 2002, at same site at datum 10 ft lower. March 5, 2020 to Nov. 19, 2020, gage was removed for bridge demolition and construction.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 4,580 ft³/s, Dec. 22, 2010, gage height, 17.93 ft based on basis of slope area measurement of peak flow; no flow for many days in most years.