Live Chat I-45 Community Nearby Traffic Lake Harrison Dam (Water dam) 2024-05-21 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Lake Harrison Dam (Water Dam) Houston, TX 5.75 Humble, TX 11.56 Porter, TX 13.71 Interstate highway exits close to Lake Harrison Dam (Water Dam) Exit 68, i45 4.10 Exit 66, i45 5.42 Exit 70b, i45 5.48 Interstate highways close to Lake Harrison Dam (Water Dam) i45 map 4.10 i610tx map 26.96 i10 map 31.01 State roads close to Lake Harrison Dam (Water Dam) TX FM 1960 map 3.44 TX FM BUSINESS 1960 A map 9.76 TX BELTWAY 8 map 12.96