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USGS Water-Year Summary 2024
11042900 Santa Gertrudis Creek near Temecula, CA
LOCATION - Lat 33°31'28", long 117°09'50" referenced to North American Datum of 1927, Riverside County, CA, Hydrologic Unit 18070302, in Temecula Grant, on left bank, 0.85 mi upstream from Murrieta Creek, 1.65 mi downstream from Tucalota Creek, and 2.2 mi northeast of Temecula.
DRAINAGE AREA - 90.2 mi².
REVISIONS HISTORY - WDR CA-94-1: Drainage area. WDR CA-96-1: 1993 (instantaneous maximum discharge).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1987 to current year. Discharge measurements only, October 1991 to September 1992.
GAGE - Water-stage recorder, crest-stage gage, and concrete control. Datum of gage is 1039.67 ft above NAVD of 1988. Prior to Oct. 11, 1994, at site 800 ft upstream at different datum.
REMARKS - Gage out of operation from Oct. 13, 2021 to Sept. 27, 2022, for channel construction.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 7,200 ft³/s, estimated, Jan. 16, 1993, gage height, 8.47 ft, site and datum then in use, based on critical depth computation; no flow for most of each year.
