Calero Reservoir, also called Calero Lake, is a reservoir in San Jose, California, located in the Calero neighborhood of Almaden Valley in South San Jose. It is the site of Calero County Park, which also includes a large area covering the lake and hundreds of acres of hills around it.
Location: Santa Clara County, California
Primary inflows: Cherry Canyon, Pine Tree Canyon
Primary outflows: Arroyo Calero
Catchment area: 7.14 sq mi (18.5 km²)
Basin countries: United States
Managing agency: Santa Clara Valley Water District