Chattahoochee River

The Chattahoochee River forms the southern half of the Alabama and Georgia border. It is a tributary of the Apalachicola River. The Chattahoochee River is about long. 
The Chattahoochee, Flint, and Apalachicola rivers together make up the Apalachicola–Chattahoochee–Flint River Basin (ACF River Basin).