The Tennessee-Tombigbee Waterway (popularly known as the Tenn-Tom) is a 234-mile (377 km) artificial waterway that provides a connecting link between the Tennessee and Tombigbee rivers. The waterway begins at Pickwick Lake on the Tennessee River, then flows southward through northeast Mississippi and west Alabama, finally connecting with the established Warrior-Tombigbee navigation system at Demopolis, Alabama.