About a decade later, he built the St. Francis Dam, in San Francisquito Canyon, to guard the city against drought and to generate hydroelectric power. St. Francis, a curved gravity dam like the ...

In 1922, William Mulholland began building the St. Francis Dam to create a reservoir for the Los Angeles–Owens River aqueduct. To meet the growing water needs of Los Angeles, he decided to ...

Explore the 1928 dam collapse, the second deadliest disaster in California history. A colossal engineering failure, the dam was built by William Mulholland, who had ensured the growth of Los ...