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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.
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USGS Water-Year Summary 2024
11051499 Santa Ana River near Mentone, CA (River Only)
LOCATION - Lat 34°06'30", long 117°05'59" referenced to North American Datum of 1927, in SW 1/4 SW 1/4 sec.04, T.1 S., R.2 W., San Bernardino County, CA, Hydrologic Unit 18070203, in SW 1/4 SW 1/4 sec. 4, T.1 S., R.2 W., on right bank, near mouth of canyon, 0.35 mi downstream from Seven Oaks Dam, 1.6 mi upstream from Mill Creek, 3.2 mi northeast of Mentone, and 16 mi downstream from Big Bear Lake.
DRAINAGE AREA - 210 mi². including area tributary to Baldwin Lake, at head of Bear Valley.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1896 to current year. Prior to October 1914, records for river only not equivalent owing to Greenspot pipeline diversion between sites and exclusion of discharge from Warm Springs Canyon.
GAGE - Water-stage recorder and concrete control. Datum of gage is 1,956.20 ft above NAVD of 1988.
COOPERATION - Station is operated in cooperation with the Santa Ana River Watermaster, with the program administered by the San Bernardino Valley Municipal Water District.
REMARKS - Prior to 2014 water year this station was previously published as a component of station 11051501 Santa Ana River and Southern California Edison Co.’s Canal near Mentone, CA (station 11051501). For additional information on this combined flow station, see Santa Ana River near Mentone (station 11051500).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 5,000 ft³/s, Mar. 1, 2011, gage height, 12.77 ft, site and datum then in use; no flow at times in some years.
