Too many ads or having playback issues? Try switching to another server using the buttons below the player.

Explore the 1928 collapse of the St. Francis Dam, the second deadliest disaster in California history. A colossal engineering and human failure, the dam was built by William Mulholland, a self-taught engineer who ensured the growth of Los Angeles by bringing the city water via aqueduct. The catastrophe killed more than 400 people and destroyed millions of dollars of property.
Directed by Rob Rapley
▶ Watch TrailerHarsens Island Revenge
2025