Bighorn Lake is a magnificent 70-mile-long reservoir straddling the Montana-Wyoming border, created by the 525-foot-high Yellowtail Dam completed in 1965. The lake extends approximately 41 miles in Montana and 30 miles into Wyoming, with a surface area of 5,574 acres in Montana alone. This impressive body of water is nestled between the dramatic limestone and sandstone walls of Bighorn Canyon, carved by the Bighorn River through the Bighorn and Pryor Mountains. With depths ranging from shallow flats in the Wyoming section to 450 feet in the Montana portion, Bighorn Lake offers diverse fishing environments and abundant opportunities for anglers seeking a variety of fish species in a breathtaking natural setting.