![]() ![]() This is helped by the concrete channel, which limits absorption of water into the earth. Some water usually reaches the ocean, even in the driest summers although there are historical accounts of the river running dry, there has been constant flow of the river every month since recording of stream flow began in 1929. Tillman Water Reclamation Plant in Van Nuys (in summer and fall), and urban discharge, it is one of the few low-elevation perennial rivers in Southern California. The Los Angeles River is heavily polluted from agricultural and urban runoff.įed primarily by rainwater and snowmelt (in winter and spring), the Donald C. Although the Los Angeles region still receives some water from the river and other local sources, most of the water supply flows from several aqueducts serving the area. While the river was once free-flowing and frequently flooding, forming alluvial flood plains along its banks, it is currently notable for flowing through a concrete channel on a fixed course, which was built after a series of devastating floods in the early 20th century.īefore the opening of the Los Angeles Aqueduct, the river was the primary source of fresh water for the city. Its headwaters are in the Simi Hills and Santa Susana Mountains, and it flows nearly 51 miles (82 km) from Canoga Park through the San Fernando Valley, Downtown Los Angeles, and the Gateway Cities to its mouth in Long Beach, where it flows into San Pedro Bay. The Los Angeles River ( Spanish: Río de Los Ángeles), historically known as Paayme Paxaayt ( West River) by the Tongva and the Porciúncula River ( Río Porciúncula) by the Spanish, is a major river in Los Angeles County, California. Bell Creek, Browns Canyon Wash, Aliso Creek, Tujunga Wash, Verdugo Wash, Arroyo Seco, Rio Hondo ![]()
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