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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.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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USGS Water-Year Summary 2024
11045300 Fallbrook Creek near Fallbrook, CA
LOCATION - Lat 33°20'49", long 117°19'01" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.32, T.9 S., R.4 W., San Diego County, CA, Hydrologic Unit 18070302, on Camp Joseph H. Pendleton Naval Reservation, on right bank, at culvert on DeLuz Road, 0.75 mi upstream from O'Neill Lake, and 4.5 mi southwest of Fallbrook.
DRAINAGE AREA - 6.97 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1993 to current year. Discharge records for October 1964 to September 1977 and October 1989 to September 1993 available in files of U.S. Marine Corps at Camp Pendleton.
GAGE - Water-stage recorder, crest-stage gage, and concrete control with low-water Parshall flume. Datum of gage is 184.20 ft above NAVD of 1988.
REMARKS - Slight regulation by two small storage reservoirs upstream from station. See schematic diagram of Santa Margarita River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1043 ft³/s, Jan. 22, 2017, gage height, 10.74 ft, from rating curve extension to 1060 ft³/s; no flow for many days in some years.
