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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
11109000 Santa Clara River near Piru, CA
LOCATION - Lat 34°24'13", long 118°44'18" referenced to North American Datum of 1927, Ventura County, CA, Hydrologic Unit 18070102, in San Francisco Grant, on right downstream bank, on private property owned by Newhall Farms, 0.1 mi south of Highway 126, 3 mi east of Piru, and 8 mi west of intersection of Highway 126 and Interstate Highway 5.
DRAINAGE AREA - 645 mi².
REVISIONS HISTORY - WDR-US 2009: 1997 (maximum discharge).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1927 to September 1932, October 1996 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 715.23 ft above NAVD of 1988.
REMARKS - Base flow affected by pumping from wells along stream for irrigation. Flow partly regulated since January 1972 by Castaic Lake (station 11108133), capacity, 323,700 acre-ft. Imported water from California Water Project stored and released at Castaic Dam. See schematic diagram of Santa Clara River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 32,000 ft³/s, Jan. 10, 2005, estimated based on hydrographic comparison and Castaic Lake release records, maximum gage height, 14.54 ft, Mar. 20, 2011; no flow for many days during the summers of 1929-32.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water year 2005 to 2015.
WATER TEMPERATURE: Water year 2005-07 (discontinued).
SEDIMENT DATA: Water year 2005 to 2015 (October 2007 to April 2015 (seasonal) (discontinued).
PERIOD OF DAILY RECORD - SUSPENDED-SEDIMENT DISCHARGE: October 2004 to September 2007 (discontinued).
EXTREMES FOR PERIOD OF DAILY RECORD - SEDIMENT CONCENTRATION: Maximum daily mean, 65,100 mg/L, Jan. 10, 2005; minimum daily mean, 9 mg/L, Aug. 21, 2006.
SUSPENDED-SEDIMENT LOAD: Maximum daily, 3,490,000 tons, estimated, Jan. 10, 2005; minimum daily, 0.56 ton, Aug. 21, 2006.
