San Dimas Dam

San Dimas Dam

Aerial view
Location of San Dimas Dam in California
Country United States
Location Los Angeles County, California
Coordinates 34°09′18″N 117°46′19″W / 34.15500°N 117.77194°W / 34.15500; -117.77194Coordinates: 34°09′18″N 117°46′19″W / 34.15500°N 117.77194°W / 34.15500; -117.77194
Purpose Flood control
Opening date 1922
Owner(s) Los Angeles County Department of Public Works
Dam and spillways
Type of dam Concrete Gravity
Impounds San Dimas Wash
Height (foundation) 145 ft (44 m)[1]
Length 265 ft (81 m)[1]
Dam volume 1,529 cu yd (1,169 m3)[2]
Reservoir
Creates San Dimas Reservoir
Total capacity 1,515 acre·ft (1,869,000 m3)

San Dimas Dam is a concrete gravity dam in Los Angeles County, California. The dam and its flood control basin/reservoir are in the San Gabriel Mountains and within the Angeles National Forest.

The dam is currently operated by the Los Angeles County Department of Public Works. It was originally built by the Los Angeles County Flood Control District in 1922.[3]

Geography

The dam controls flooding from San Dimas Creek, a major San Gabriel Mountains drainage and tributary of the San Gabriel River.

The dam is 145 feet (44 m) high and 265 feet (81 m) long,[1] with a storage capacity of 1,515 acre feet (1,869,000 m3) of water.[3]

As a flood control facility the San Dimas Reservoir is dry for most of the year, only storing water after significant winter storms. The regulation provided by the dam allows for the efficient diversion of floodwaters from San Dimas Wash to Puddingstone Reservoir, which protects the San Dimas area of the San Gabriel Valley.[4]

See also

References

  1. 1 2 3 "Millions Now Available for Flood Control". Southwest Builder and Contractor. 51: 24. 1918.
  2. ↑ "San Dimas Dam". National Performance of Dams Program. Stanford University. Retrieved 2016-06-21.
  3. 1 2 Justia.com: Los Angeles County Flood Control District, San Dimas Dam
  4. ↑ Gordon Morris Bakken; Alexandra Kindell (24 February 2006). Encyclopedia of Immigration and Migration in the American West. SAGE Publications. p. 678. ISBN 978-1-4522-6534-6.
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