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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2025
11042400 Temecula Creek near Aguanga, CA
LOCATION - Lat 33°27'33", long 116°55'22" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.19, T.8 S., R.1 E., Riverside County, CA, Hydrologic Unit 18070302, on left bank, 70 ft downstream from highway 79, and 4.3 mi northwest of Aguanga.
DRAINAGE AREA - 131 mi².
REVISIONS HISTORY - WDR CA-89-1: 1958 (peaks above base), 1966 (instantaneous maximum discharge), 1979 (instantaneous maximum discharge), 1980 (instantaneous maximum discharge), 1986 (instantaneous maximum discharge). WSP 1928: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1957 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,496.24 ft above NAVD of 1988. Prior to Oct. 22, 2024, at site 1.0 mi upstream at datum 1,592.73 ft above NAVD of 1988.
REMARKS - No regulation upstream from station. Pumping upstream from station for irrigation of less than 1,000 acres. See schematic diagram of Santa Margarita River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 8,100 ft³/s, Jan. 16, 1993, gage height, 14.6 ft, from floodmark, from rating curve extended above 1,200 ft³/s, on basis of critical depth computation; no flow for several days in some years.
