Wild Horse Reservoir is a man-made lake in Elko County, Nevada in the United States. The reservoir was initially created in 1937 by the construction of Wild Horse Dam. In 1969, a new concrete single-angle arch dam was constructed by the United States Bureau of Reclamation for the Bureau of Indian Affairs with a height of 87 feet (27 m) and a length of 458 feet (140 m) at its crest. The original 1937 dam was left in place and is still partly visible. The newer dam doubled the size of the reservoir. The small community of Wild Horse is located on the south shore.