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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.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
11153000 Pacheco Creek near Dunneville, CA
LOCATION - Lat 36°58'48", long 121°22'49" referenced to North American Datum of 1983, Santa Clara County, CA, Hydrologic Unit 18060002, in Ausaymas y San Felipe Grant, on right bank, 350 ft downstream of Walnut Avenue (private road bridge) and 3.3 mi northeast of Dunneville.
DRAINAGE AREA - 146 mi².
REVISIONS HISTORY - Monthly mean statistics, in cubic feet per second, for November through March for water years 2009 to 2013, have been corrected superseding those published at,
http://waterdata.usgs.gov/nwis/inventory/?site_no=11153000&agency_cd=USGS&.
NOV DEC JAN FEB MAR 2009 WY MEAN 7.52 31.5 94.3 119 75.3 2010 WY MEAN 7.36 30.8 94.1 118 75.2 2011 WY MEAN 7.29 30.6 93.3 120 79.2 2012 WY MEAN 7.16 30.0 91.4 117 77.6 2013 WY MEAN 7.02 30.3 89.6 115 76.0
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1939 to September 1982, October 2006 to current year. Monthly discharge only prior to January 1940, published in WSP 1315-B.
GAGE - Water-stage recorder. Datum of gage is 233.89 ft above NAVD of 1988. Prior to Nov. 17, 1950, nonrecording gage at site 350 ft upstream at datum 6.00 ft higher. Nov. 17, 1950, to Aug. 18, 1960, at datum 4.00 ft higher.
REMARKS - Minor regulation by Pacheco Lake 9 mi upstream, capacity, 6,150 acre-ft. Small diversions above station for irrigation.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 15,800 ft³/s, Jan. 9, 2023, gage height, 20.94 ft; no flow at times.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years June 2020 to current year.
WATER TEMPERATURE: Water years June 2020 to current year.
INSTRUMENTATION - Water-quality monitor since June 25, 2020.
