San Joaquin

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San Joaquin

(săn wäkēn`), river, c.320 mi (510 km) long, rising in the Sierra Nevada, E Calif., and flowing W then N through the S Central Valley to form a large delta with the SacramentoSacramento,
longest river of Calif., c.380 mi (610 km) long, rising near Mt. Shasta, N Calif., and flowing generally SW to Suisun Bay, an arm of San Francisco Bay, where it forms a large delta with the San Joaquin River.
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 River near Suisun Bay, an arm of San Francisco Bay. The San Joaquin is navigable c.40 mi (60 km) for oceangoing vessels to Stockton. The Mokelumne, Tuolumne, Merced, and Fresno are its chief tributaries. The wide southern part of the Central ValleyCentral Valley,
great trough of central Calif., c.450 mi (720 km) long and c.50 mi (80 km) wide, between the Sierra Nevada and the Coast Ranges. The Sacramento and San Joaquin rivers drain much of the valley before converging in a huge delta and flowing into San Francisco Bay;
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 basin between the Sierra Nevada and the Coast Range is usually called the San Joaquin Valley, although the southern half of this area is drained by independent rivers such as the Kings and the Kern. Between Stockton in the north and Bakersfield in the south are many cities, notably Fresno, Modesto, and Merced.

The Central Valley projectCentral Valley project,
central Calif., long-term general scheme for the utilization of the water of the Sacramento River basin in the north for the benefit of the farmlands of the San Joaquin Valley in the south, undertaken by the U.S. Bureau of Reclamation in 1935.
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, undertaken largely to bring surplus water from the north to make the San Joaquin Valley more fertile, has as one of its units Friant Dam on the San Joaquin; the San Luis Dam is on the San Luis River, and the Delta-Mendota Canal parallels the lower San Joaquin on the west. The diversion of much of the river's water to irrigation, however, caused large stretches of the river from below the Friant Dam to the Merced River to run dry. An agreement in 2006 between the Bureau of Reclamation, the Natural Resources Defense Council, and the Friant Water Users Authority called for restoration of 153 mi (246 km) of the river through the release of water from the Millerton Reservoir behind the Friant Dam.

San Joaquin

 

a river in the western USA. The San Joaquin measures 564 km long and drains an area of approximately 45,000 sq km. Rising in the Sierra Nevada, it flows through the southern part of California’s Central Valley and empties into San Francisco Bay. It shares a common mouth with the Sacramento River. The mean flow rate is 138 cu m per sec. There are many reservoirs in the river basin. The river is navigable for a distance of 80 km from the mouth. It is used for irrigation.

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