Calero Reservoir

Calero Reservoir is an artificial lake in the Santa Teresa Hills south of San Jose, California, United States. A 4,471-acre (1,809 ha) county park surrounds the reservoir[7] and provides limited fishing[8] ("catch-and-release"), picnicking, hiking, and horseback riding activities. Although swimming is prohibited,[9] boating, water-skiing and jet-skiing are permitted in the reservoir.[10]

Not to be confused with Lake Calero.
Calero Reservoir
May 2009
LocationSanta Clara County, California
Coordinates37°11′08″N 121°46′39″W[1]
TypeReservoir
Primary inflowsCherry Canyon,[2] Pine Tree Canyon[3]
Primary outflowsArroyo Calero[4]
Catchment area7.14 sq mi (18.5 km2)
Basin countriesUnited States
Managing agencySanta Clara Valley Water District
Max. length2.2 mi (3.5 km)
Surface area349 acres (141 ha)
Water volume9,934 acre feet (12,253,000 m3)
Surface elevation476 feet (145 m)
References[5][1][2][3][4][6]

The California Office of Environmental Health Hazard Assessment released a "Do Not Eat" warning regarding eating any fish caught from this reservoir based on the elevated mercury level.[11]

History

The reservoir was formed by the Calero Dam,[12] built in 1935 across Arroyo Calero, which is also known as Calero Creek. Its waters reach the San Francisco Bay by way of Los Alamitos Creek and the Guadalupe River. It is the fourth largest reservoir owned by the Santa Clara Valley Water District.[6]

The reservoir captures and stores winter runoff from the nearby foothills and from Almaden Reservoir. Water recharges groundwater basins and is also provided directly to water treatment plants to be treated and distributed to county residents.[12]

Calero Dam

Calero Dam is an earthen dam 90 feet (27 m) high and 840 feet (260 m) long containing 550,000 cubic yards (420,000 m3) of material. Its crest is 490 feet (150 m) above sea level.[6]

See also
  • List of lakes in California
  • List of lakes in the San Francisco Bay Area
  • List of reservoirs and dams in California

References
  1. "Calero Reservoir". Geographic Names Information System. United States Geological Survey.
  2. "Cherry Canyon". Geographic Names Information System. United States Geological Survey.
  3. "Pine Tree Canyon". Geographic Names Information System. United States Geological Survey.
  4. "Arroyo Calero". Geographic Names Information System. United States Geological Survey.
  5. "Listing of Jurisdictional Dams in California" (PDF). California Department of Water Resources. Retrieved July 3, 2017.
  6. "Santa Clara Valley Water District: List of Reservoirs". Archived from the original on 2017-06-20. Retrieved 2017-07-03.
  7. "Santa Clara County Parks: Calero Reservoir". County of Santa Clara. Retrieved 2017-07-03.
  8. "Santa Clara County Parks: Fishing Guidelines". County of Santa Clara. Retrieved 2017-07-02. Mercury has been found to accumulate in Almaden, Calero, Guadalupe, Anderson and Stevens Creek Reservoirs at levels that make the fish unsafe to eat.
  9. "Santa Clara Valley Water District: Recreation Restrictions". Archived from the original on 2017-06-20. Retrieved 2017-07-04. Swimming at Almaden, Coyote, Anderson and Calero reservoirs is prohibited by the state Department of Health to protect the drinking water supply from potential bacteriological contamination.
  10. "Santa Clara County Parks: Boating Guidelines". County of Santa Clara. Retrieved 2017-07-03. Boating is permitted from 8am to ½ hour before sunset in the following reservoirs: Calero, Coyote Lake, Anderson, Stevens Creek and Lexington.
  11. Monserrat, Laurie (2015-03-11). "Calero Reservoir". OEHHA. Retrieved 2018-06-11.
  12. "Santa Clara Valley Water District: Calero Dam and Reservoir". Archived from the original on 2017-06-20. Retrieved 2017-07-03. Calero Reservoir provides water directly to drinking water treatment plants, which treat and test it for safety. The district then distributes the water to water retailers to sell to the county’s 1.8 million residents. Calero also captures and stores winter runoff to recharge groundwater basins, helps store water from the nearby Almaden Reservoir watershed and accepts imported water.
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