Another in the string of many 'rivers' in Southern California, this is actually one of the more intact ones. It drains many areas including part of the Angeles National Forest, on snowy, pine covered slopes of the San Gabriel Mountains. It also drains Vasquez Rocks, Castaic Valley, Piru Creek, much of the western side of the Grapevine, and areas of the Condor Sanctuary. The river itself begins around Vincent Gap, the low pass by which highway 14 exits Los Angeles for the desert. It then passes through a gorge in which water flows year-round. After this it becomes a wide wash and moves into Valencia and past Magic Mountain. Unfortunately, much of this part of the river was ruined by overdevelopment and channelization. After passing through this city, the river meanders down its valley near Ojai, and eventually into the ocean near Ventura. This river is usually dry in the summer but has some pretty crazy floods in the winter.