The Hebgen Dam is a concrete-core earthen embankment dam on the Madison River in the U.S. state of Montana. The dam is 85 feet tall and 721 feet long. The dam is owned and operated by PPL Montana and its purpose is to store and regulate water for other downstream reservoirs and hydroelectric power plants.The dam was built in 1914 and created Hebgen Lake. After the 1959 Hebgen Lake earthquake the dam was damaged but it was fixed several weeks later.
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