Ala. Code § 41-2-2: Boundary Between Alabama and Georgia.

The boundary line between Alabama and Georgia commences on the west side of the Chattahoochee River, at the point where it enters the State of Florida; from thence up the river, along the western bank thereof, to the point on Miller’s Bend, next above the place where the Uchee creek empties into such river; thence in a direct line to the Nickajack.