The Rivers Project Master Plan is the required U.S. Army Corps of Engineers approval document that guides public use and natural resource management on the Project’s 48,792 acres of Federal public lands and 106,208 acres of Project waters for environmental stewardship and recreation related purposes. The Project area for the Master Plan extends from Mississippi River Mile 0, at Cairo, Illinois; upstream to the tail water of Locks and Dam 22, Mississippi River Mile 301, at Saverton, Missouri. The majority of the Project’s public lands are upstream of St. Louis, Missouri. The lower 80 miles of the Illinois River, is also managed by Rivers Project and is included in the plan.