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The St. Francis Dam National Memorial Foundation is a non-profit organization, established in 2019, with the goal of raising funds to support the United States Forest Service in building and maintaining the St. Francis Dam Disaster National Memorial and Monument, including the construction of a visitor center and a memorial wall with the names ...
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English: Shaded relief terrain map of the area around the failed en:St. Francis Dam and reservoir, showing also the locations of two other large reservoirs constructed later. Roads and boundaries are shown in their current (2013) arrangement.
Between 1924 and 1926, the canyon was the site of the construction of the St. Francis Dam. The Los Angeles Department of Water and Power began filling a reservoir in the San Francisquito Canyon in 1926. At 11:57 pm on March 12, 1928, the dam catastrophically failed, and the resulting flood took the lives of at least 431 people.
William Mulholland (September 11, 1855 – July 22, 1935) was an Irish American self-taught civil engineer who was responsible for building the infrastructure to provide a water supply that allowed Los Angeles to grow into the largest city in California.
Around midnight on March 12, 1928, the 195 foot St. Francis Dam in the San Francisquito Canyon above what is now the city of Santa Clarita in California failed catastrophically. At least 431 people were killed as the 47,000,000 m 3 reservoir emptied into the Pacific Ocean near Oxnard, nearly 50 miles away. [ 34 ]
The St. Francis Dam was built on San Francisquito Creek in San Francisquito Canyon, and completed in 1926. It was part of the Los Angeles Aqueduct system, creating a storage reservoir for the imported Owens Valley water. The dam failed in 1928, due to a then undetectable geological weakness in the bedrock.
St. Francis Dam (1926–1928) - failed March 12, 1928; San Clemente Dam - intentionally removed in 2015-2016 because of environmental issues; Van Norman Dams (1911–1971) - failed February 9, 1971, in 1971 San Fernando earthquake