Remains of St. Francis Dam, 1928(United States Geological Survey/Wikimedia Commons)
The history of Los Angeles’ water supply is long and complicated—remember Chinatown?—and continues through today’s drought crisis. In the early 1900s, William Mulholland, then superintendent of Los Angeles’ Water Department, oversaw the construction of the Los Angeles Aqueduct to bring water to the city from Owens Valley, more than 200 miles away. About a decade later, he built the St. Francis Dam, i