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Lost LA
When the St. Francis Dam Collapsed
Season 7
Episode 3
Author Geoff Manaugh joins Nathan to understand the 1928 St. Francis Dam collapse, which unleashed a deadly flood that devastated the Santa Clara River Valley. Visit the dam site, follow the 54-mile flood path to the Pacific, and uncover stories of loss, resilience, and heroism. Explore the disaster’s impact on Mexican American families and hear from experts on its lasting significance.