The purpose of the proposed project is to improve agricultural water management by rehabilitating and modernizing the St. Mary Canal along its existing alignment. The proposed project is needed due to existing system inadequacies, as well as the risk of infrastructure failure. The current system inadequacies have reduced the reliability of water delivery to water users who rely on the St. Mary Canal for agricultural, municipal, residential, industrial, and recreational uses. Failure could lead to environmental damage on the Blackfeet Indian Reservation, the St. Mary River, and the North Fork Milk River.