Hoover Dam begins transmitting electricity to Los Angeles

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On October 9, 1936, harnessing the power of the mighty Colorado River, Hoover Dam begins sending electricity over transmission lines spanning 266 miles of mountains and deserts to run the lights, radios, and stoves of Los Angeles. Initially named Boulder Dam, work on the dam was begun under President Herbert Hoover’s administration but completed as a public works project during the Roosevelt administration (which renamed it for Hoover). When it was finished in 1935, the towering concrete and steel plug was the tallest dam in the world and a powerful symbol of the new federal dedication to large-scale reclamation projects designed to water the arid West. In fact, the electricity generated deep in the bowels of Hoover Dam was only a secondary benefit. The central reason for the dam was the collection, preservation, and rational distribution of that most precious of all western commodities: water.