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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
11169025 Guadalupe River above Highway 101, at San Jose, CA
LOCATION - Lat 37°22'26", long 121°55'55" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.35, T.1 W., R.7 S., Santa Clara County, CA, Hydrologic Unit 18050003, in San Jose on left bank, 60 ft downstream of access bridge to San Jose Airport Economy Lot 1 (Green Lot)on Airport Blvd., and approximately 300 ft upstream from Highway 101.
DRAINAGE AREA - 160 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 2002 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 17.57 ft above NAVD of 1988.
REMARKS - Flow regulated by Lexington Reservoir 12 mi upstream and by Calero, Almaden, and Guadalupe Reservoirs, and Lake Elsman (combined usable capacity, about 42,000 acre-ft), with water released during summer for percolation in spreading basins on tributaries. Diversions into the above impoundments come from San Luis Reservoir (part of the San Felipe Project), from the South Bay Aqueduct, and from the Hetch Hetchy Aqueduct. There are upstream diversions by the San Jose Water Works for urban use. In addition, an off-stream holding basin located approximately 150 ft downstream collects runoff from part of San Jose Airport and periodically releases water into the gage pool for a few minutes each day at low flows. Prior to the 2005 Water Year, this release entered the channel downstream of the gage pool and was not included in the published record.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,340 ft³/s, Feb. 21, 2017, gage height, 15.38 ft; minimum daily, 5.1 ft³/s, Oct. 17 2014.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
DISCRETE WATER-QUALITY DATA:
SEDIMENT DATA: Water years 2003 to current year (storm season only).
CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years November 2002 to April 2016 (storm season only) .
SUSPENDED-SEDIMENT DISCHARGE: Water years November 2002 to current year (storm season only).
