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Water-Year Summary for Site 11254000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Mean,Max.,Min.,Med.)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Mean,Max.,Min.,Med.)  

Water year 2019: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2019
11254000 San Joaquin River near Mendota, CA
LOCATION - Lat 36°48'38", long 120°22'38" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.07, T.13 S., R.15 E., Fresno County, CA, Hydrologic Unit 18040001, 2.5 mi below Mendota Dam, and 3.5 mi north of Mendota.
DRAINAGE AREA - 3,940 mi².
REVISIONS HISTORY - WDR CA-00-3: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1939 to September 1954, December 1999 to current year.
GAGE - Water-stage recorder. Datum of gage is 138.8 ft above NGVD of 1929 (levels by U.S. Bureau of Reclamation). Prior to Nov. 3, 1947, at site 200 ft downstream. Prior to Nov. 4, 1953, at datum 2.00 ft higher.
REMARKS - All flow regulated by Mendota Dam. Water delivered to the Mendota Pool primarily by the Delta-Mendota Canal, at certain times Mendota Pool storage may be supplemented by inflow from the San Joaquin River and/or James Bypass (Fresno Slough) . Many diversions above station for irrigation.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 11,700 ft³/s, June 20, 1941, gage height, 13.75 ft, site and datum then in use, maximum gage height, 16.60 ft, Apr. 22, 2006; no flow at times during most years.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

CONTINUOUS WATER TEMPERATURE: January 2013 to current year.

CONTINUOUS SPECIFIC CONDUCTANCE: January 2013 to current year.

SEDIMENT DATA: March 2010 to May 2013.