Navigation Dams

388 dams in the US serve this purpose.

Dam Name	Hazard	Height	Built	Type	State
Fulton Lock and Dam Itawamba	High Hazard	26 ft	1983	Gravity	Mississippi
Fuston Ranch Dam Jefferson	Significant Hazard	30 ft	—	Earth	Oregon
Garrison Dam Mercer	High Hazard	—	1953	Earth	North Dakota
Gavins Point Dam Cedar	High Hazard	—	1958	Earth	South Dakota
George W. Andrews Lock and Dam Early	Significant Hazard	—	1963	Gravity	Alabama
Glover Wilkins Lock and Dam Monroe	Significant Hazard	48 ft	1983	Gravity	Mississippi
Granby Oswego	Significant Hazard	15 ft	1926	Masonry	New York
Gray's Landing Lock and Dam Greene	Significant Hazard	—	1995	Gravity	Pennsylvania
Green Peter Dam Linn	High Hazard	320 ft	1967	Gravity	Oregon
Green River Lock and Dam 1 Henderson	Low Hazard	—	1970	Concrete	Kentucky
Green River Lock and Dam 2 McLean	Low Hazard	—	1956	Other	Kentucky
Green River Lock and Dam 3 Ohio	Low Hazard	—	1836	Other	Kentucky
Green River Lock and Dam 5 Butler	Low Hazard	—	1934	Other	Kentucky
Greenup Locks and Dam Greenup	Significant Hazard	—	1962	Concrete	Kentucky
Gull Dam Cass	Low Hazard	9 ft	1912	Concrete	Minnesota
Guntersville Dam Marshall	High Hazard	78 ft	1939	Concrete	Alabama
G.V. "Sonny" Montgomery Lock and Dam Itawamba	Significant Hazard	—	1984	Gravity	Mississippi
Halls Waste Weir Dam Niagara	Significant Hazard	17 ft	1918	Concrete	New York
Hannibal Locks and Dam Wetzel	Significant Hazard	—	1974	Gravity	West Virginia
Harrison Spillway Dam Wayne	High Hazard	16 ft	1918	Concrete	New York
Hawkinsville Dam Oneida	Low Hazard	18 ft	1915	Concrete	New York
Hells Canyon Adams	High Hazard	323 ft	1967	Gravity	Idaho
Henry H. Buckman Lock Putnam	Low Hazard	54 ft	1971	Earth	Florida
Herbert Hoover Dike Palm Beach	High Hazard	35 ft	1965	Earth	Florida
High Dam Oswego	High Hazard	35 ft	1928	Gravity	New York
Hildebrand Lock and Dam Monongalia	Low Hazard	—	1960	Gravity	West Virginia
Hills Creek Dam Lane	High Hazard	328 ft	1962	Earth	Oregon
Hinckley Herkimer	High Hazard	83 ft	1914	Earth	New York
Hiram M. Chittenden Locks and Dam King	High Hazard	—	1916	Gravity	Washington
Hiwassee Dam Cherokee	High Hazard	248 ft	1940	Concrete	North Carolina
H.K. Thatcher Lock and Dam Union	Significant Hazard	—	1983	Gravity	Arkansas
Hochstein Dam #3 Washington	Low Hazard	45 ft	—	—	Oregon
Holley Waste Weir Dam Orleans	Low Hazard	15 ft	1918	Concrete	New York
Holt Lock and Dam Tuscaloosa	High Hazard	58 ft	1968	Gravity	Alabama
Howell Heflin Lock and Dam Greene	Significant Hazard	—	1978	Gravity	Alabama
Ice Harbor Lock and Dam Walla Walla	High Hazard	—	1962	Concrete	Washington
Indiana Harbor Canal Confined Disposal Facility Lake	High Hazard	21 ft	2011	Earth	Indiana
Inglis Main Dam & Spillway Citrus	High Hazard	39 ft	1968	Earth	Florida
Iroquois St. Lawrence	Significant Hazard	67 ft	1958	Concrete	New York
Jamesville Reservoir Dam Onondaga	High Hazard	53 ft	1874	Masonry	New York
James W. Trimble Lock and Dam Sebastian	Significant Hazard	28 ft	1969	Concrete	Arkansas
Jamie L. Whitten Lock and Dam Tishomingo	High Hazard	—	1983	Earth	Mississippi
Jerry F. Costello Lock and Dam Randolph	Significant Hazard	66 ft	1974	Concrete	Illinois
Jim Woodruff Lock and Dam Jackson	High Hazard	—	1954	Gravity	Florida
Joe D. Waggonner, Jr. Lock and Dam Caddo	Significant Hazard	—	1985	Gravity	Louisiana
Joe Hardin Lock and Dam Jefferson	Significant Hazard	28 ft	1968	Concrete	Arkansas
Johan Vineyard Reservoir H Polk	Low Hazard	35 ft	—	Earth	Oregon
John C. Stennis Lock and Dam Lowndes	Significant Hazard	—	1980	Gravity	Mississippi
John Day Lock and Dam Klickitat	High Hazard	118 ft	1968	Earth	Oregon
John Hollis Bankhead Lock and Dam Tuscaloosa	High Hazard	—	1975	Gravity	Alabama