Twin Lakes Dam is a dam in Lake County, Colorado, about 13 miles south of Leadville. The earthen dam was constructed in 1978 by the United States Bureau of Reclamation with a height of 53 feet and a length at its crest of 3,150 feet. The dam is owned and operated by the Bureau as one element of its larger "transbasin" Fryingpan-Arkansas Project, which t…Twin Lakes Dam is a dam in Lake County, Colorado, about 13 miles south of Leadville. The earthen dam was constructed in 1978 by the United States Bureau of Reclamation with a height of 53 feet and a length at its crest of 3,150 feet. The dam is owned and operated by the Bureau as one element of its larger "transbasin" Fryingpan-Arkansas Project, which transfers available water from Colorado's West Slope across the Continental Divide to the more arid, and more populated, East Slope.