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Water-Year Summary for Site USGS 11172175

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Available Parameters
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
11172175 Coyote Creek above Highway 237, at Milpitas, CA
LOCATION - Lat 37°25'20", long 121°55'35" referenced to North American Datum of 1927, Santa Clara County, CA, Hydrologic Unit 18050003, in Rincon de los Esteras Grant, on right bank, at transition between natural channel and concrete flood control channel, 400 ft upstream from Highway 237 bridge, 1 mi west of Interstate Highway 880, 1.3 mi west of Milpitas, and 2.3 mi upstream from lower Penitencia Creek.
DRAINAGE AREA - 319 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1999 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is  6.51 ft above NAVD of 1988.
REMARKS - Flow regulated by Leroy Anderson Reservoir, usable capacity, 89,073 acre-ft, and Coyote Reservoir, usable capacity, 22,925 acre-ft, with water diverted for percolation in spreading basins adjacent to Coyote Creek.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,670 ft³/s, Feb. 22, 2017, gage height, 17.77 ft. Minimum daily discharge, 2.7 ft³/s, Oct. 26, 2015.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 2004-07, October 2008 to April 2013 (storm season only)(discontinued). WATER TEMPERATURE: Water years 2004-07, October 2008 to April 2013 (storm season only)(discontinued). SEDIMENT DATA: Water years 2004-07, October 2008 to April 2013 (storm season only)(discontinued).
PERIOD OF DAILY RECORD - SUSPENDED-SEDIMENT DISCHARGE: October 2003 to April 2007, October 2008 to April 2013 (storm season only)(discontinued).
REMARKS - Sediment samples were collected on most days where water temperature is published.
EXTREMES FOR PERIOD OF DAILY RECORD - SEDIMENT CONCENTRATION: Maximum daily mean, 1,420 mg/L, Nov. 9, 2003; minimum daily mean, 7 mg/L, Dec. 20, 2006. SEDIMENT LOAD: Maximum daily, 4,370 tons, Apr. 4, 2006; minimum daily, 0.36 ton, Dec. 20, 2006.