Guadalupe Reservoir, reservoir in Santa Clara County, California, USA

Guadalupe Reservoir is a 74-acre reservoir on Guadalupe Creek along Hicks Road, about 15 miles south of San Jose. Its dam, built in 1935, holds 3,415 acre-feet of water at an elevation of 614 feet. The reservoir lies in Santa Clara County and is one of six original systems approved by voters in 1934.

Spanish explorers named the area in 1776, giving the creek a name after a Mexican saint. The dam was completed in 1935 as one of the first six water storage projects built in the region after voters approved the plan in 1934.

The Guadalupe River was named Rio de Nuestra Señora de Guadalupe on March 30, 1776, by the de Anza expedition, honoring the Mexican saint who was the expedition's principal patron. The reservoir and its dam, built in 1935, carry that name. The California Office of Environmental Health Hazard Assessment advises that no one eat any fish caught in the reservoir.

Access is mainly through Hicks Road, where you can find spots with good views of the water. Bring your own food and drinks, as there are no shops or restaurants nearby, and wear appropriate footwear since the trails can be steep and slippery.

Although it functions as a water storage facility, California health officials advise against eating fish caught here. The water can contain harmful substances, especially after heavy rains, making it an ecologically fragile spot despite its calm appearance.