Scale 1:36,000. One-sided 24″x36″. Waterproof and Tear Resistant! Located only 30 miles from Atlanta, Georgia, Allatoona Lake is situated on the Etowah River, a tributary of the Coosa River. The serene lake and peaceful surroundings offer a break from the rush of city living. The Allatoona Lake has a shore line of 270 miles, is contained in 12,010 acres, and has a maximum depth of 145 ft.