Bighorn Lake is a reservoir in the United States located in Southern Montana and Northern Wyoming in the Bighorn Canyon National Recreation Area. The lake is 40 miles south of Billings, Montana. Bighorn Lake was created by the construction of Yellowtail Dam near Fort Smith, Montana in 1965. It stretches the entire 71 miles of the Bighorn Canyon.

Lakes of Montana | Lakes of Wyoming | Reservoirs in the United States