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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. The dam's main ...
The 991 acre-foot (1.2 million cubic meter) dam provides water conservation and controls flooding from Big Dalton Canyon, a watershed within the San Dimas Experimental Forest, part of the Angeles National Forest in the San Gabriel Mountains.
It impounds Walnut Creek, a tributary of the San Gabriel River, to form Puddingstone Reservoir, which can hold more than 20,000 acre⋅ft (25,000,000 m 3) of water. [1] The reservoir stores floodwater from both the Walnut Creek Wash, and also the San Dimas Wash, to which it is connected by a short artificial channel below San Dimas Dam.
San Dimas (Spanish for "Saint Dismas") [10] is a city in the San Gabriel Valley of Los Angeles County, California, United States. At the 2020 census , its population was 34,924. It historically took its name from San Dimas Canyon in the San Gabriel Mountains above the northern section of present-day San Dimas.
Concern for the water grew with the increasing number of settlements in East San Gabriel Valley and the need for water storage receptacles became apparent. In 1923, the Los Angeles County Flood Control District purchased a large piece of land to construct a dam to hold back floodwaters from an area covering 30.3 square miles (78 km 2 ).
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San Dimas may refer to: San Dimas Municipality, Durango, Mexico; San Dimas, California, United States; San Dimas (reserve), a biosphere reserve and experimental forest in southern California; San Dimas Dam, in California, United States; San Dimas (guitar), model of electric guitar made by Charvel
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