The Delta–Mendota Canal is a 117 mi (188 km) aqueduct in central California. It is part of the Central Valley Project and its purpose is to replace the water in the San Joaquin River that is diverted into Madera Canal and Friant-Kern Canal at Friant Dam. The canal begins at the C.W. Bill Jones Pumping Plant (formerly the Tracy Pumping Plant), which pumps water 197 ft (60 m)from the Sacramento-San Joaquin Delta. The canal runs south along the western edge of the San Joaquin Valley, parallel to the California Aqueduct for most of its journey, but it diverges to the east after passing San Luis Reservoir, which receives some of its water. The water is pumped from the canal and into O'Neill Forebay, and then it is pumped into San Luis Reservoir by the Gianelli Pumping-Generating Plant. Occasionally, water from O'Neill Forebay is released into the canal. The Delta–Mendota Canal ends at Mendota Pool, on the San Joaquin River near the town of Mendota, 30 mi (48 km) west of Fresno. The Delta–Mendota Canal capacity is 4,600 cu ft/s (130 m3/s) and gradually decreases to 3,211 cu ft/s (90.9 m3/s) at its terminus.
The Delta–Mendota Canal was completed in 1951 and is operated by the United States Bureau of Reclamation and the San Luis Delta Mendota Water Authority, which is in charge of maintaining the quality of the water that is discharged from the south end of the canal. The canal passes through parts of Alameda, San Joaquin, Stanislaus, Merced, and Fresno counties.
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