Big Dalton Dam near full capacity 15 February 1973

Big Dalton Dam is a multiple arch concrete dam in

Los Angeles County Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, built for the

Los Angeles County Flood Control District The Los Angeles County Department of Public Works (LACDPW) is responsible for the construction and operation of Los Angeles County's roads, building safety, sewerage, and flood control. DPW also operates traffic signals and intelligent transpor ...

and completed in August 1929. The dam is one of the earliest of the multiple arch "double-wall"

buttress A buttress is an architectural structure built against or projecting from a wall which serves to support or reinforce the wall. Buttresses are fairly common on more ancient buildings, as a means of providing support to act against the lateral (s ...

designs of engineer Fred A. Noetzli. The 991 acre-foot (1.2 million cubic meter) dam provides water conservation and controls flooding from Big Dalton Canyon, a

watershed Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to: Hydrology * Drainage divide, the line that separates neighbouring drainage basins * Drainage basin, called a "watershe ...

within the San Dimas Experimental Forest, part of the

Angeles National Forest The Angeles National Forest (ANF) of the United States Forest Service, U.S. Forest Service is located in the San Gabriel Mountains and Sierra Pelona Mountains, primarily within Los Angeles County, California, Los Angeles County in southern Calif ...

in the

San Gabriel Mountains The San Gabriel Mountains ( es, Sierra de San Gabriel) are a mountain range located in northern Los Angeles County, California, Los Angeles County and western San Bernardino County, California, United States. The mountain range is part of the Tr ...

. It is about 4 miles northeast of the city of Glendora and is operated by the Los Angeles County Department of Public Works.

References

External links

* Historic American Engineering Record (HAER) documentation, filed under 2600 Big Dalton Canyon Road, Glendora, Los Angeles County, CA: ** ** Los Angeles County Department of Public Works dams Buttress dams Angeles National Forest San Gabriel Mountains Dams completed in 1929 Historic American Engineering Record in California 1929 establishments in California {{US-dam-stub

See also

References

External links