Valley, Chile. Located in central Chile between the Western Cordillera of the Andes Mountains and the coastal range, it extends about 400 mi (650 km) from the Chacabuco Range in the north to the Bío-Bío River in the south. The agricultural heartland of Chile, it was the original centre of European colonization beginning in the mid-1500s, and it continues to be home to most Chileans. Santiago is at its northern end.
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The Central Valley is a large, flat valley that dominates the central portion of the U.S. state of California, United States. It is home to many of California's most productive agricultural efforts. The valley stretches nearly 400 miles (600 km) from north to south. Its northern half is referred to as the Sacramento Valley, and its southern half as the San Joaquin Valley. The two halves meet at the shared delta of the Sacramento and San Joaquin Rivers, a large expanse of interconnected canals, streambeds, sloughs, marshes and peat islands.
Counties commonly associated:
About 6.5 million people live in the Central Valley today and it is the fastest growing region in California. There are 10 Metropolitan Statistical Areas (MSA) in the Central Valley. Below, they are listed by (MSA) population.
The flatness of the valley floor contrasts with the rugged hills or gentle mountains that are typical of most of California's terrain. The valley is thought to have originated below sea level as an offshore area depressed by subduction of the Farallon Plate into a trench further offshore. The San Joaquin Fault is a notable seismic feature of the Central Valley.
It was later enclosed by the uplift of the Coast Ranges, with its original outlet into Monterey Bay. Faulting moved the Coast Ranges, and a new outlet developed near what is now San Francisco Bay. Over the millennia, the valley was filled by the sediments of these same ranges, as well as the rising Sierra Nevada to the east; that filling eventually created an extraordinary flatness just barely above sea level; before California's massive flood control and aqueduct system was built, the annual snow melt turned much of the valley into an inland lake.
Another significant geologic feature of the Central Valley lies hidden beneath the delta. The Stockton Arch is an upwarping of the crust beneath the valley sediments which extends southwest to northeast across the valley.
Physiographically, the Central Valley lies within the California Trough physiographic section, which is part of the larger Pacific Border province, which in turn is part of the Pacific Mountain System.
These rivers are not tributary to the San Joaquin River:
Agriculture remains the primary industry in the Central Valley. The Central Valley is one of the most productive agricultural regions in the world. It is commonly referred to as the "fruit basket of the world." A notable exception has been the Sacramento region, where the large and stable workforce of government employees helped steer the economy away from agriculture. Despite state hiring cutbacks and the closure of several military bases, the Sacramento economy has continued to expand and diversify and now more closely resembles that of the nearby San Francisco Bay Area. Primary sources of population growth are people migrating from the San Francisco Bay Area seeking lower housing costs, as well as immigration from Asia, Central America, Mexico, Ukraine and the rest of the former Soviet Union.
Early farming was concentrated close to the Sacramento-San Joaquin Delta, where the water table was high year round and water transport more readily available, but subsequent irrigation projects have brought many more parts of the valley into productive use. For example, the Central Valley Project was formed in 1935 to redistribute and store water for agricultural and municipal purposes with dams and canals.
Highways Interstate 5 and State Route 99 run, roughly parallel, north-south through the valley, meeting at its north and south ends. Interstate 80 crosses it northeast-southwest from Rocklin to Vacaville.
In addition to highways, the California Aqueduct follows I-5 from Tracy on southwards to Southern California across the Transverse Ranges and the federal Central Valley Project includes numerous facilities between Shasta Dam and the Grapevine. PG&E's and Western Area Power Administration's system of three 500 kV wires (Path 15 and Path 66) run through the valley. Path 26 also runs in the southernmost part of the San Joaquin Valley.
BNSF (Burlington Northern Santa Fe Railway) and Union Pacific Railroad both have railway lines in the Central Valley. The BNSF Bakersfield Subdivision runs from Bakersfield to Calwa, four miles south of Fresno. From Calwa the BNSF Stockton Subdivision continues to Port Chicago, west of Antioch. The Union Pacific Railroad Martinez Subdivision runs from Port Chicago through Martinez, Richmond and Emeryville to Oakland. The UP's Fresno Subdivision runs from Stockton to Sacramento. Amtrak operates six daily San Joaquins trains over these lines.
California's Central Valley Residents Feeling Effects of Region's Growth: Rising Concern About Traffic, Air Pollution, Resources, But Residents Upbeat About Quality of Life.
Apr 25, 2002; Byline: Public Policy Institute of California SAN FRANCISCO, Calif., April 25 (AScribe Newswire) -- The realities of rapid...
Central Valley becoming urbanized.(Originated from 'At my feet lay the Great Central Valley of California, level and)
Jan 17, 1997; flowery, like a lake of pure sunshine John Muir, 1868 By Sarah Lubman Knight-Ridder Newspapers MODESTO _ For most Bay Area...