Browse Dams

3,532 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 3,532 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
Mississippi River Lock and Dam 11 Iowa Dubuque 43 Significant Not Available 1937 Navigation
Macoupin Energy Recirculation Pond Dam Illinois Macoupin 43 High Not Available 1970 Water Supply
Wahelo Pond Dam Illinois Tazewell 43 Low Not Available 1959 Recreation
Mclaughlin Pond Dam Illinois Rock Island 43 Low Not Available 1972 Recreation
Mississippi River Lock and Dam 5 Minnesota Buffalo 43 Significant Not Available 1935 Navigation
Little Hell Creek Diversion Dam Colorado Larimer 43 Low Not Available 1952 Hydroelectric
Coal and Crane Creek Structure 8 Illinois Schuyler 43 High Not Available 1971 Other
Threw Lake Dam Illinois Knox 43 Low Not Available - Recreation
Ramsey Lake Dam Illinois Fayette 43 Low Not Available 1948 Recreation
Laguna Diversion Dam Arizona Yuma 43 Low Not Available 1909 Debris Control
Waterloo New Reservoir Dam Illinois Monroe 42 Significant Not Available 1961 Water Supply
Anita Dam Montana Yellowstone 42 Low Not Available 1937 Irrigation
Lost River Diversion Dam Oregon Klamath 42 Low Not Available 1912 Irrigation
Castle Ridge Lake Dam Illinois Madison 42 High Not Available 2002 Recreation
Glen O. Jones Lake Dam Illinois Saline 42 Significant Not Available 1963 Recreation
Moraine View Dam Illinois McLean 42 High Not Available 1963 Recreation
Eckert Lake Dam Illinois St. Clair 42 High Not Available 1960 Recreation
Lanny Jokers Dam Illinois Macoupin 42 Low Not Available - Recreation
Mill Creek Structure 7 Dam Illinois Clark 42 Low Not Available 1976 Flood Risk Reduction
Mississippi River Lock and Dam 2 Minnesota Dakota 42 Significant Not Available 1931 Navigation
Altamont Reservoir Dam Illinois Effingham 42 Significant Not Available 1972 Water Supply
Bass Lake Dam North Carolina Watauga 42 High Not Available 1936 Fish and Wildlife Pond
Vernor Lake Dam Illinois Richland 42 Significant Not Available 1924 Recreation
Pine Lakes Country Club North Pond Dam Illinois Tazewell 42 Low Not Available 1959 Other
Sunset Hills Lake 1 Dam Illinois Tazewell 42 High Not Available 1964 Irrigation
Mississippi River Lock and Dam 8 Wisconsin Houston 42 Significant Not Available 1937 Navigation
John H. Kerr Dam - Saddle Dike 1 Virginia Mecklenburg 42 High Not Available 1952 Flood Risk Reduction
Wee Ma Tuk Lake Dam Illinois Fulton 42 Significant Not Available 1965 Recreation
Virginia Lake Dam Illinois Cass 42 Significant Not Available 1933 Recreation
Richard L. Schafer Dam - Frazier Dike California Tulare 42 Significant Not Available 1961 Flood Risk Reduction
Mississippi River Lock and Dam 4 Wisconsin Wabasha 42 Significant Not Available 1935 Navigation
Grassy Gap Branch Fresh Water Impoundment Kentucky Martin 42 High Not Available - Water Supply
Coal and Crane WS Str 14 Illinois Schuyler 41 Low Not Available 1970 Flood Risk Reduction
Mississippi River Lock and Dam 18 Iowa Des Moines 41 Significant Not Available 1937 Navigation
Sequoyah - Ccw Discharge Channel Tennessee Hamilton 41 Low Not Available 1981 Water Supply
Holiday Lake Dam Illinois LaSalle 41 High Not Available 1965 Recreation
Mississippi River Locks and Dam 15 Iowa Scott 41 Significant Not Available 1934 Navigation
Lake Nellie Dam Illinois Fayette 41 Significant Not Available 1963 Recreation
New Gillespie Lake Dam Illinois Macoupin 41 Significant Not Available 1956 Water Supply
Mississippi River Lock and Dam 7 Minnesota La Crosse 41 Significant Not Available 1937 Navigation
Hastie Mining//Tailings Pond 2-3 Dam Illinois Hardin 41 Low Not Available - Tailings
Hickory Lake Dam Illinois Logan 41 Low Not Available 1972 Recreation
Lake Como Dam Illinois Johnson 41 Significant Not Available 1966 Recreation
Coulterville Coal/Gateway Mine/Slurry Cell 3 Dam Illinois Randolph 41 High Not Available 1990 Other
Lake Carlton Dam Illinois Whiteside 41 High Not Available 1969 Recreation
Wind River Diversion Dam Wyoming Fremont 41 Low Not Available 1923 Irrigation
Johnsonville Fossil Plant - Ash Disposal Area Perimeter Dike (Island) Tennessee Humphreys 41 Significant Not Available 1968 Other
Coal and Crane Creek Structure 9 Illinois Schuyler 41 Low Not Available 1970 Other
Hambaugh-Martin 1 Dam Illinois Brown 41 Low Not Available 1961 Flood Risk Reduction
Midland/Elm Mine/Fresh Water Lake Dam Illinois Peoria 41 Low Not Available 1967 Other

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.