USGS Water-Year Summary 2020
11070500 San Jacinto River near Elsinore, CA
LOCATION - Lat 33°39'51", long 117°17'35" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.09, T.6 S., R.4 W., Riverside County, CA, Hydrologic Unit 18070202, on right bank, 2.0 mi east of Elsinore, 2.1 mi downstream from Railroad Canyon Dam, and 36 mi downstream from Lake Hemet.
DRAINAGE AREA - 723 mi².
- WDR CA-72-1: Drainage area.
PERIOD OF RECORD - January 1916 to current year. Monthly figures for 1927-50, adjusted for diversion, published in WSP 1315-B.
GAGE - Water-stage recorder. Elevation of gage is 1,270 ft above NGVD of 1929, from topographic map. Prior to Feb. 13, 1916, nonrecording gage at site 0.7 mi downstream at different datum. Feb. 13, 1916, to Oct. 27, 1921, nonrecording gage at present site, at different datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 16,000 ft³/s, Feb. 17, 1927, gage height, 11.8 ft, from rating curve extended above 2,000 ft³/s, on basis of slope-area measurement of peak flow, maximum gage height, 12.55 ft, Dec. 22, 2010; no flow for many days in most years.