Live Chat I-70 Community Nearby Traffic Mammoth Lake Dam (Water dam) 2024-05-25 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Mammoth Lake Dam (Water Dam) Norvelt, PA 1.40 Southwest, PA 3.74 Pleasant Unity, PA 3.99 Interstate highway exits close to Mammoth Lake Dam (Water Dam) Exit 58, i70 9.32 Exit 75, i70 9.32 Exit 75, i76 9.64 Interstate highways close to Mammoth Lake Dam (Water Dam) i76 map 6.53 i70 map 9.32 i79 map 54.67 State roads close to Mammoth Lake Dam (Water Dam) PA 982 map 2.93 US 119 PA map 7.34 US 30 PA map 8.18