
The Guadalupe River is a short river in California that runs from the Santa Cruz Mountains flowing north through San Jose, California, and emptying into the San Francisco Bay at Alviso. It is located in the Guadalupe Watershed, which is owned and managed by the Santa Clara Valley Water District. Running generally parallel to the river is the Silver Creek Fault.Much of the river is surrounded by parks. The river flows through Almaden Quicksilver County Park, home to former mercury mines dating back to when the area was governed by Mexico. The entire 3 mile downtown stretch, from Interstate 280 to Interstate 880, is part of the Guadalupe River Park and Gardens, one of the largest urban parks currently in development in the United States The river is the home to the only known salmon spawning run through a major U.S. downtown area (outside of Anchorage, Alaska). However, the salmon run is considered endangered, so salmon fishing is currently illegal. Additionally, due to the mercury contamination in the river water, eating other types of fish caught from the Guadalupe River is actively and strongly discouraged.