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Water-Year Summary for Site 11325500

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
11325500 Mokelumne River at Woodbridge, CA
LOCATION - Lat 38°09'31", long 121°18'09" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.34, T.4 N., R.6 E., San Joaquin County, CA, Hydrologic Unit 18040012, on right bank at Woodbridge, 0.4 mi downstream from County Highway Bridge, and 0.5 mi downstream from dam and canal intake of Woodbridge Irrigation District.
DRAINAGE AREA - 661 mi².
REVISIONS HISTORY - WSP 1930: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 1924 to September 1994 (low-flow records only 1924-25), October 1996 to current year. CHEMICAL DATA: Water years 1951-94. SPECIFIC CONDUCTANCE: Water years 1952-58, 1975-77. WATER TEMPERATURE: Water years 1951-58, 1961-86. SEDIMENT: Water years 1975-94.
GAGE - Water-stage recorder. Datum of gage is 14.90 ft above NGVD of 1929 (levels by East Bay Municipal Utility District). See WSP 2130 for history of changes prior to July 26, 1968.
COOPERATION - Records were collected by East Bay Municipal Utility District, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2916.
REMARKS - Concerning regulation and diversions see REMARKS for Mokelumne River below Camanche Dam (station 11323500). Between Woodbridge and Camanche Dam there are many additional diversions for irrigation, including Woodbridge Canal (station 11325000). See schematic diagram of Mokelumne River Basin available from the California Water Science Center.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 27,000 ft³/s, Nov. 22, 1950, gage height, 29.58 ft, from rating curve extended above 6,200 ft³/s, on basis of contracted-opening measurement of peak flow; minimum daily, 0.23 ft³/s, Nov. 15, 1977. Maximum discharge since construction of Camanche Dam in 1963, 5,340 ft³/s, Mar. 8, 1986, gage height, 23.19 ft, maximum gage height, 23.31 ft, Jan. 9, 1997.