San Dimas Dam
| San Dimas Dam | |
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Aerial view
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 Location of San Dimas Dam in California
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| Country | United States |
| Location | Los Angeles County, California |
| Coordinates | 34°09′18″N 117°46′19″W / 34.15500°N 117.77194°WCoordinates: 34°09′18″N 117°46′19″W / 34.15500°N 117.77194°W |
| 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) |
| Length | 265 ft (81 m) |
| Dam volume | 1,529 cu yd (1,169 m3) |
| 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.
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, with a storage capacity of 1,515 acre feet (1,869,000 m3) of water.
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.
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Wikipedia