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Water-Year Summary for Site USGS 11070210

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
11070210 San Jacinto River at Ramona Expressway, near Lakeview, CA
LOCATION - Lat 33°50'23", long 117°08'06" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.07, T.4 S., R.2 W., Riverside County, CA, Hydrologic Unit 18070202, on right bank, at downstream end of Ramona Expressway Bridge, and 1.0 mi northwest of Lakeview.
DRAINAGE AREA - 365 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2000 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 1,420 ft above NGVD of 1929, from topographic map.
REMARKS - Records poor. Sand and gravel operations upstream from station may reduce runoff and cause peak attenuation. Natural storage of floodwaters in the Mystic Lake area, approximately 3 mi upstream, also reduces peak flows at times in some years. Low flows sustained, at times, by releases of reclaimed water upstream from station. Flow partly regulated by Lake Hemet. Lake Hemet Municipal Water District's upper canal diverts water at a point 4.0 mi upstream from station on San Jacinto River near San Jacinto (station 11069500). See schematic diagram of Santa Ana River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 19.0 ft³/s, Feb. 24, 2005, gage height, 8.72 ft, from rating curve extended above 6.79 ft³/s; no flow for many days most years.