The Banning Dam is a 122-year-old dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

 in Westlake Village, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. Built less than a mile east of Lake Sherwood

Lake Sherwood, California

Lake Sherwood is a unincorporated community and a census-designated place in the Santa Monica Mountains, in Ventura County, California overlooking the lake of the same name. It is south of the city of Thousand Oaks, and west of Westlake Village. The ZIP Code is 91361, and the community is inside...

 (albeit fifteen years older than the Sherwood Dam

Sherwood Dam

The Lake Sherwood Dam, known also as The Potrero Dam or simply Sherwood Dam, is a 270-foot long concrete arch dam in Thousand Oaks, California, completed in 1904. Its construction led to the creation of the 165-acre Potrero Lake over the following winter...

), the structure is located within the Lake Eleanor Open Space. Named for its builder, "Captain" William Banning, the dam was completed in 1889 and creates Lake Eleanor, not to be confused with Yosemite's Lake Eleanor

Lake Eleanor

Lake Eleanor is a reservoir located in Yosemite National Park at an altitude of . The reservoir has a capacity of and a surface area of 953 acres...

 (though both are manmade).

See also

• Sherwood Dam
  Sherwood Dam
  The Lake Sherwood Dam, known also as The Potrero Dam or simply Sherwood Dam, is a 270-foot long concrete arch dam in Thousand Oaks, California, completed in 1904. Its construction led to the creation of the 165-acre Potrero Lake over the following winter...
  
  
• Westlake Village, California
  Westlake Village, California
  Westlake Village is a planned community that straddles the Los Angeles and Ventura county line. The eastern portion is the incorporated city Westlake Village, located on the western edge of Los Angeles County, California. The city, located in the region known as the Conejo Valley, encompasses half...
  
  
• Malibou Lake
  Malibou Lake
  Malibou Lake is a small, artificial lake in the Santa Monica Mountains, as well as a community, near Agoura Hills, California, USA. Located within Malibu Creek State Park, and almost completely surrounded by the Santa Monica Mountains National Recreation Area, is situated between Malibu Beach and...
  
  
• Rindge Dam
  Rindge Dam
  The -tall Rindge Dam on Malibu Creek is located in Malibu Creek State Park, about three miles from the coast of Malibu, California. It is situated just northeast of Malibu Canyon Road, from which it is only partially visible...