The Tombigbee begins in Mississippi, crosses the Alabama state line at Aliceville Lake, joins the Black Warrior River at Demopolis, and eventually joins the Alabama River to form the Mobile River. The Tombigbee flows throughout 15 counties in Mississippi and 15 counties in Alabama, with slightly more than 50% of the river in Alabama.
The main stem of the Tombigbee River is approximately 200 miles long.
