Buffalo Bill Dam is a concrete arch-gravity dam on the Shoshone River in the U.S. state of Wyoming. It is named after the famous Wild West figure William "Buffalo Bill" Cody, who founded the nearby town of Cody and owned much of the land now covered by the reservoir formed by its construction. The dam is part of the Shoshone Project, successor to several visionary schemes promoted by Cody to irrigate the Bighorn Basin and turn it from a semi-arid sagebrush-covered plain to productive agricultural land. Known at the time of its construction as Shoshone Dam, it was renamed in 1946 to honor Cody.The 325 feet (99 m) high structure was designed by engineer Daniel Webster Cole and built between 1905 and 1910. At the time of its completion it was the tallest dam in the world. It was listed on the National Register of Historic Places in 1971 and named a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1973. The land around the reservoir is maintained as Buffalo Bill State Park.