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.
| 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.