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The dam is surrounded by the San Gabriel Mountains and has an incoming flow from the San Dimas Creek. The dam controls flooding from San Dimas Creek, a major San Gabriel Mountains drainage and tributary of the San Gabriel River. The dam diverts floodwater to Puddingstone Reservoir, protecting the area in and around San Dimas. [6]
Big Dalton Dam near full capacity, February 15, 1973. Big Dalton Dam is a multiple arch concrete dam in Los Angeles County, California, built for the Los Angeles County Flood Control District and completed in August 1929. The dam is one of the earliest of the multiple arch "double-wall" buttress designs of engineer Fred A. Noetzli. [1]
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 may refer to: San Dimas Municipality, Durango, Mexico; San Dimas, California, United States; San Dimas (reserve), a biosphere reserve and experimental ...
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.
The San Gabriel River (right of the I-605 here) changes from dirt to concrete channel in Downey, near the Rio San Gabriel Park (right center) The San Gabriel River basin drains a total of 689 square miles (1,780 km 2) [3] and is located between the watersheds of the Los Angeles River to the west, the Santa Ana River to the east, and the Mojave Desert to the north.
The watershed begins at Red Box Saddle in the Angeles National Forest near Mount Wilson in the San Gabriel Mountains. As it enters the urbanized area of the watershed, the Arroyo Seco stream flows between La Cañada Flintridge on the west and Altadena on the east. Just below Devil's Gate Dam, the stream passes underneath the Foothill Freeway
Eaton Canyon is a major canyon beginning at the Eaton Saddle near Mount Markham and San Gabriel Peak in the San Gabriel Mountains in the Angeles National Forest, United States. Its drainage flows into the Rio Hondo river and then into the Los Angeles River . [ 1 ]