The Los Angeles River (Spanish: Río de Los Ángeles, El Río de Nuestra Señora la Reina de los Ángeles de Porciúncula), historically known as Paayme Paxaayt 'West River' by the Tongva and the Río Porciúncula 'Porciúncula River' by the Spanish, is a major river in Los Angeles County, California. 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. While the river was once free-flowing and f...
Click any point for details. Sections without stored geometry are drawn as straight put-in → take-out lines — actual courses follow the river.