Live Chat I-20 Community Nearby Traffic Mystery Valley Dam (Water dam) 2024-05-30 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Mystery Valley Dam (Water Dam) Decatur, GA 7.64 Stone Mountain, GA 9.83 Ellenwood, GA 11.36 Interstate highway exits close to Mystery Valley Dam (Water Dam) Exit 71, i20 3.71 Exit 74, i20 6.60 Exit 68, i20 7.09 Interstate highways close to Mystery Valley Dam (Water Dam) i20 map 3.71 i285ga map 9.14 i675ga map 14.69 State roads close to Mystery Valley Dam (Water Dam) GA 212 map 2.08 GA 155 map 3.87 GA 124 map 6.55