Live Chat I-20 Community Nearby Traffic Cowan Dam (Water dam) 2024-05-21 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Cowan Dam (Water Dam) Lithonia, GA 9.44 Snellville, GA 14.08 Oxford, GA 14.97 Interstate highway exits close to Cowan Dam (Water Dam) Exit 80, i20 3.73 Exit 75, i20 4.53 Exit 78, i20 4.55 Interstate highways close to Cowan Dam (Water Dam) i20 map 3.73 i285ga map 20.27 i675ga map 27.45 State roads close to Cowan Dam (Water Dam) GA 20 map 1.44 GA 12 map 3.67 GA 138 map 4.36