Browse Dams

11,351 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 11,351 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.

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Name State County Height (ft) Hazard Condition Year Purpose
Alcyon Lake Dam New Jersey Gloucester 12 Significant Satisfactory 1943 Recreation
Lake Watawga Pennsylvania Wayne 12 Significant Poor 1907 Recreation
Pine Lake Park Dam New York Westchester 12 Significant Poor — Recreation
Hap Cremean Lagoon #2 Ohio Franklin 12 Significant Satisfactory 2010 Tailings
Woodmark Community Pond Maryland Howard 12 Significant Unsatisfactory 1968 Recreation
Sioux Lake Dam New Jersey Burlington 12 Significant Satisfactory — Recreation
Paradise Lake No. 2 Pennsylvania Fayette 12 Significant Poor 1973 Recreation
Holly Dam Michigan Oakland 12 Significant Poor 1840 Recreation
Rader Pond Dam Connecticut Litchfield 12 Significant Unsatisfactory — Recreation
North Fork Lake Dam Alaska Prince of Wales-Hyder Census Area 12 Significant Not Rated — Water Supply
Highland Lower Reservoir Dam New York Ulster 12 Significant Fair 1916 Water Supply
Waiting Springs Swm Pond Maryland Howard 12 Significant Satisfactory 1971 Flood Risk Reduction
Lake Oberon Dam New York Onondaga 12 Significant Satisfactory 1974 Recreation
Centerton Lake Dam New Jersey Salem 12 Significant Poor 1942 Recreation
Hackensack Golf Club Dam New Jersey Bergen 12 Significant Satisfactory 1950 Irrigation
Lake Juliet Dam New Jersey Morris 12 Significant Poor 1919 Recreation
Little Keen Pond Pennsylvania Wayne 12 Significant Fair 1902 Recreation
Moosic Lakes Pennsylvania Lackawanna 12 Significant Poor — Recreation
Duffield Dam Connecticut New Haven 12 Significant Fair 1880 Recreation
Upper Porter Pond Dam Massachusetts Plymouth 12 Significant Fair 1940 Recreation
Fox Hollow Lake Dam New Jersey Sussex 12 Significant Satisfactory 1925 Recreation
Hough Millpond Dam South Carolina Kershaw 12 Significant Fair 1935 Recreation
Highway Lake Dam A Texas Harrison 12 Significant Not Rated 1925 Recreation
Fairfield Sewage Equalization Basin - Lagoon 2 Washington Spokane 12 Significant Fair 1966 Other
Silver Spring Dam Texas Bandera 12 Significant Not Rated — Other
Leatherwood Lake Dam Ohio Guernsey 12 Significant Satisfactory 1972 Recreation
Gaylord Pond Dam Connecticut Litchfield 12 Significant Satisfactory 1900 Recreation
Sportsmans Pond Dam Massachusetts Worcester 12 Significant Fair 1898 Recreation
Ryder Pond Dam New York Dutchess 12 Significant Poor 1951 Recreation
Great Brook Reservoir Dam Connecticut New Haven 12 Significant Not Rated 1925 Recreation
Mansfield Training Dam #2 Connecticut Tolland 12 Significant Fair 1968 Recreation
Beal Reservoir Levee Texas Brazoria 12 Significant Poor 1950 Recreation
Cellu Company Dam Connecticut Hartford 12 Significant Fair 1950 Water Supply
Bristol Myers Squibb Dam Connecticut New Haven 12 Significant Satisfactory — Other
Shaker Pond Dam Connecticut Hartford 12 Significant Fair 1880 Recreation
Bush Pond Dam Connecticut New London 12 Significant Fair — Recreation
Vaughn Log Pond Oregon Lane 12 Significant Not Rated 1951 Other
Crane'S Pond Dam Iowa Henry 12 Significant Satisfactory 1989 Recreation
Lloyd Sutton Dam New York Cortland 12 Significant Not Rated 1968 Fire Protection, Stock, Or ...
Forest Lake Pennsylvania Susquehanna 12 Significant Satisfactory 1842 Recreation
Fallen Leaf Lake Dam California El Dorado 12 Significant Not Rated 1934 Recreation
Willow Lake Kansas Sedgwick 12 Significant Fair — Recreation
Griswold Lower Pond Dam Massachusetts Essex 12 Significant Fair 1983 Recreation
Jacklin Lake Dam Connecticut Hartford 12 Significant Satisfactory — Recreation
Doctors Lake Dam Florida Clay 12 Significant Fair — Flood Risk Reduction
Rock City Saw Mill Dam New York Dutchess 12 Significant Poor 1900 Recreation
Swans Pond Dam Massachusetts Worcester 12 Significant Fair 1848 Irrigation
Siegel Marsh Pennsylvania Erie 12 Significant Not Rated 1958 Recreation
Mosher Dam New York Oswego 12 Significant Satisfactory 1937 Other
Monhagen Lake Dam New York Orange 12 Significant Fair 1867 Water Supply

Frequently Asked Questions

Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.

Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.

Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.