Browse Dams
3,540 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 3,540 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.
| Name | State | County | Height (ft) | Hazard | Condition | Year | Purpose |
|---|---|---|---|---|---|---|---|
| DeGray Reregulation Dam | Arkansas | Clark | 52 | High | Not Available | 1971 | Hydroelectric |
| Point Marion Lock and Dam | Pennsylvania | Greene | 52 | Significant | Not Available | 1959 | Navigation |
| Tappan Dam | Ohio | Harrison | 52 | High | Not Available | 1936 | Flood Risk Reduction |
| Robinson Tailings Pond #2 Dam | Colorado | Park | 52 | Significant | Not Available | — | Tailings |
| Red Bluff Diversion | California | Tehama | 52 | Low | Not Available | 1963 | Irrigation |
| Lake Catatoga Dam | Illinois | Macoupin | 52 | Low | Not Available | 1972 | Recreation |
| Lincoln Trail State Park Lake Dam | Illinois | Clark | 52 | High | Not Available | 1956 | Recreation |
| Charles Mill Dam | Ohio | Ashland | 52 | High | Not Available | 1936 | Flood Risk Reduction |
| Craig Lake Dam | Illinois | Jersey | 52 | Low | Not Available | 1960 | Recreation |
| Opekiska Lock and Dam | West Virginia | Monongalia | 52 | Low | Not Available | 1967 | Navigation |
| Happy Hollow Lake Dam | Illinois | Knox | 52 | Significant | Not Available | 1940 | Recreation |
| Bay Creek Structure 5 Dam | Illinois | Pope | 51 | Significant | Not Available | 1976 | Recreation |
| Litchfield City Lake Dam | Illinois | Montgomery | 51 | High | Not Available | 1925 | Recreation |
| David D. Terry Lock and Dam | Arkansas | Pulaski | 51 | Significant | Not Available | 1968 | Navigation |
| Dam No. 5n | Kentucky | Perry | 51 | Significant | Not Available | — | Other |
| Hancock Brook Dam - Railroad Dike | Connecticut | Litchfield | 51 | High | Not Available | 1966 | Flood Risk Reduction |
| Clear Creek Dam | Virginia | Bristol | 51 | High | Not Available | 1965 | Flood Risk Reduction |
| Marble Bluff Dam | Nevada | Washoe | 51 | Low | Not Available | 1975 | Other |
| OMID Regulating Reservoir | Colorado | Mesa | 51 | Low | Not Available | 2016 | |
| Trial Lake Dam | Utah | Summit | 51 | High | Not Available | 1990 | Irrigation |
| Hannibal Locks and Dam | West Virginia | Wetzel | 51 | Significant | Not Available | 1974 | Navigation |
| James W. Trimble Lock and Dam | Arkansas | Sebastian | 51 | Significant | Not Available | 1969 | Navigation |
| Hollis Park Dam | Illinois | Peoria | 51 | High | Not Available | 1982 | Recreation |
| Oso Diversion Dam | Colorado | Archuleta | 51 | Low | Not Available | 1970 | Irrigation |
| Gridley Dam | Illinois | Cass | 51 | Low | Not Available | 1998 | Recreation |
| Lake Bloomington Dam | Illinois | McLean | 51 | Significant | Not Available | 1930 | Water Supply |
| Glendo Dike 1 | Wyoming | Platte | 50 | High | Not Available | 1959 | Flood Risk Reduction |
| Non Potable Reservoir Dam 1 | Colorado | El Paso | 50 | Significant | Not Available | 1961 | Flood Risk Reduction |
| Fieldstone Subdivision Twin Dams-North Dam | Illinois | Adams | 50 | Low | Not Available | 2001 | Recreation |
| Impoundment No. 2 | Alabama | Cullman | 50 | Low | Not Available | — | Water Supply |
| Slurry Pond No. 3 | Alabama | Jefferson | 50 | Low | Not Available | — | Water Supply |
| Fresh Water Impoundment #2 | Alabama | Tuscaloosa | 50 | Low | Not Available | — | Water Supply |
| Horton Lake Dam | Illinois | Hancock | 50 | High | Not Available | 1967 | Recreation |
| Non Potable Reservoir Dam 3 | Colorado | El Paso | 50 | High | Not Available | 1961 | Irrigation |
| Fish Lake Dam | Oregon | Jackson | 50 | High | Not Available | 1908 | Flood Risk Reduction |
| McAlpine Locks and Dam | Kentucky | Jefferson | 50 | Significant | Not Available | 1964 | Navigation |
| Vandalia Municipal Reservoir Dam | Illinois | Fayette | 50 | High | Not Available | 1965 | Recreation |
| Fort Sumner Diversion Dam | New Mexico | De Baca | 50 | Low | Not Available | 1951 | Irrigation |
| Lopez Dam | California | Los Angeles | 50 | High | Not Available | 1954 | Debris Control |
| Hughes Hollow Slurry Imp. | West Virginia | Monongalia | 50 | High | Not Available | — | Tailings |
| Carlinville Lake II Dam | Illinois | Macoupin | 50 | Significant | Not Available | 1981 | Water Supply |
| Norris Slurry Impoundment | Illinois | Fulton | 50 | High | Not Available | 1955 | Other |
| Northern Oaks Lake Dam | Illinois | Tazewell | 50 | Low | Not Available | 1969 | Recreation |
| Hamilton County Coal/Hamilton County/Coal Refuse 1 Dam | Illinois | Hamilton | 50 | Low | Not Available | — | Other |
| Karl Lake Dam | Illinois | Mercer | 50 | Significant | Not Available | 1974 | Recreation |
| Pishkun Dike 1 | Montana | Teton | 50 | High | Not Available | 1930 | Irrigation |
| Duck Creek Ash Pond 2 Dam | Illinois | Fulton | 50 | Low | Not Available | 1984 | Other |
| Flood Water Retarding Structure Site 30 | Mississippi | Holmes | 50 | Significant | Not Available | 2001 | Other |
| D.O.E. Savannah River Pond B | South Carolina | Barnwell | 50 | Low | Not Available | 1960 | Other |
| Knight Hawk/Prairie Eagle/North Refuse Area Dam | Illinois | Perry | 50 | Significant | Not Available | — | Tailings |
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.