Live Chat I-15 Community Nearby Traffic Gem State Dam (Water dam) 2024-05-08 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Gem State Dam (Water Dam) Basalt, ID 6.55 Firth, ID 8.74 Idaho Falls, ID 13.89 Interstate highway exits close to Gem State Dam (Water Dam) Exit 108, i15 6.12 Exit 113, i15 8.12 Exit 118, i15 15.42 Interstate highways close to Gem State Dam (Water Dam) i15 map 6.12 i86 map 56.79 i84 map 142.32 State roads close to Gem State Dam (Water Dam) US 26 ID map 6.02 US 20 ID MT map 14.58 ID 33 map 51.26