Tennessee–Tombigbee Waterway
The Tennessee–Tombigbee Waterway (popularly known as the Tenn-Tom) is a 234-mile (377 km) artificial waterway built in the 20th century from the Tennessee River to the junction of the Black Warrior-Tombigbee River system near Demopolis, Alabama, United States. The Tennessee–Tombigbee Waterway links commercial navigation from the nation's midsection to the Gulf of Mexico.
Source: Wikipedia — Tennessee–Tombigbee Waterway (CC BY-SA 4.0)