West Valley Watersheds


The West Valley Watersheds comprise an 85-square-mile area of several small watersheds, including San Tomas Aquino Creek (of which Saratoga Creek is a major tributary), Calabazas Creek, and the Sunnyvale East and Sunnyvale West channels. These watersheds are primarily characterized by channelized creeks on the valley floor and more natural streams in the hillsides, such as Saratoga Creek, which supports a native rainbow trout population. Agricultural and flood control drainage efforts in the 19th century connected all of the West Valley waterways to Guadalupe Slough at the southern end of San Francisco Bay. The District does not own or operate any reservoirs in the West Valley Watersheds area.