USGS Water-Year Summary 2021
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.
- WDR CA-94-1: Drainage area. WDR CA-96-1: 1993 (instantaneous maximum discharge).
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. Elevation of gage is 1,045 ft above NGVD of 1929, from topographic map. Prior to Oct. 11, 1994, at site 800 ft upstream at different datum.
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.