Also known as the Bighorn Canal Headgate, the Bighorn Ditch Headgate was designed to provide irrigation to the Crow Indian Reservation. It was built in 1892 and diverted water from the Bighorn River, thus the name.

The Bighorn Ditch Headgate was designed by William F. Graves. It included a dam that extends at an angel into the river. It directed water to a canal that flows parallel to the river. Primarily made of local limestone, it measures 35 feet wide and allowed 720 cubic feet of water to flow per second with the help of five iron gates.

The Bighorn Ditch Headgate helped transform the Crow people?s life from being nomadic to agrarian. It also paved the way for the group?s self-sufficiency.