Live Chat I-80 Community Nearby Traffic Lake Hopatcong Dam (Water dam) 2024-04-30 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Lake Hopatcong Dam (Water Dam) Mount Arlington, NJ 2.23 Hopatcong, NJ 3.25 Ledgewood, NJ 3.54 Interstate highway exits close to Lake Hopatcong Dam (Water Dam) Exit 28, i80 1.87 Exit 30, i80 2.31 Exit 27, i80 3.95 Interstate highways close to Lake Hopatcong Dam (Water Dam) i80 map 1.87 i287nj map 20.24 i78 map 29.56 State roads close to Lake Hopatcong Dam (Water Dam) NJ MORRIS 616 map 0.09 NJ MORRIS 631 map 0.81 NJ SUSSEX 607 map 1.22