San Francisquito Canyon Road, Copper Hill, Santa Clarita, Los Angeles County, California, 91354, United States
Los Angeles Department of Water and Power
Los Angeles Department of Water and PowerCONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins84% CONFIDENCEOverall confidence: 84%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Wikipedia[1] places the failure two and a half minutes before midnight on 12 March 1928; ASDSO's dam-failure case study, the St. Francis Dam National Memorial Foundation and PBS SoCal[4] all give the night of 12 March 1928 (PBS notes the flood reached the sea at 5:30 a.m. on 13 March).The St. Francis Dam in San Francisquito Canyon failed just before midnight on 12 March 1928, sending a flood about 55 miles to the Pacific and killing more than 400 people.
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