Up through the late 60s or early 70s, occasionally a portion of the aqueduct was dynamited, probably by one of the remaining farmers who were “dried out” of their land. It is presumed he died as there have been none since. I think the movie Chinatown had its basis in the acquisition of water rights.
I remember reading that Mulholland was a strong leader in LA building dams for Ventura and LA County and making water right purchases. His efforts opened up the San Fernando Valley to development and essentially made LA what it is today including the current water supply system.
He and an assistant inspected the St. Francis Dam and 1 hours later the dam burst and the final body count was in the hundreds.
Unlike today’s politicians he took public responsibility and resigned.
https://en.wikipedia.org/wiki/William_Mulholland