Anchorage Honolulu Age of Major Dams Miami Hawaii 0 yrs 50 100 150 Seattle Portland Wash. N.H. N.D. Mont. Anchorage Honolulu Age of Major Dams Miami Hawaii 0 yrs 50 100 150 Wash. N.D. N.H. Vt. Mont. Nev. Colo. Utah W. Va. Va. Kan. Mo. Texas Fla. Alaska Houston Anchorage Honolulu Ownership of Major Dams Miami Hawaii Private Public Unknown Seattle Wash. Portland N.H. N.D. Mont. Texas Fla. Alaska Ownership of Major Dams Hawaii Private Public Unknown Wash. N.H. N.D. Vt. Mont.

Source: New York Times February 23, 2017 09:56 UTC