Live Chat I-20 Community Nearby Traffic Mann Lake Dam (Water dam) 2024-05-01 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Mann Lake Dam (Water Dam) Lithonia, GA 9.44 Snellville, GA 14.08 Oxford, GA 14.97 Interstate highway exits close to Mann Lake Dam (Water Dam) Exit 80, i20 3.73 Exit 75, i20 4.53 Exit 78, i20 4.55 Interstate highways close to Mann Lake Dam (Water Dam) i20 map 3.73 i285ga map 20.27 i675ga map 27.45 State roads close to Mann Lake Dam (Water Dam) GA 20 map 1.44 GA 12 map 3.67 GA 138 map 4.36