Live Chat I-78 Community Nearby Traffic Round Valley North Dam (Water dam) 2024-04-28 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Round Valley North Dam (Water Dam) Whitehouse Station, NJ 5.86 Annandale, NJ 6.09 High Bridge, NJ 6.47 Interstate highway exits close to Round Valley North Dam (Water Dam) Exit 20b a, i78 1.02 Exit 18, i78 4.44 Exit 17, i78 5.51 Interstate highways close to Round Valley North Dam (Water Dam) i78 map 1.02 i287nj map 14.94 i80 map 29.28 State roads close to Round Valley North Dam (Water Dam) US 22 NJ map 0.23 NJ CR 523 map 5.04 NJ 31 map 5.13