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 |
|---|---|---|---|---|---|---|---|
| Big Hill Dam | Kansas | Labette | 83 | High | Not Available | 1981 | Flood Risk Reduction |
| Rowdy Branch Dam | Kentucky | Perry | 82 | High | Not Available | — | Other |
| D.O.E. Savannah River Pond C | South Carolina | Barnwell | 82 | Low | Not Available | 1957 | Other |
| Fort Supply Dam | Oklahoma | Woodward | 82 | High | Not Available | 1942 | Flood Risk Reduction |
| Unity Dam | Oregon | Baker | 82 | High | Not Available | 1938 | Irrigation |
| John C. Stennis Lock and Dam | Mississippi | Lowndes | 82 | Significant | Not Available | 1980 | Navigation |
| Bardwell Dam | Texas | Ellis | 82 | High | Not Available | 1965 | Flood Risk Reduction |
| Elk River Dam | Tennessee | Franklin | 82 | High | Not Available | — | Flood Risk Reduction |
| Robert S. Kerr Lock and Dam | Oklahoma | Le Flore | 82 | High | Not Available | 1970 | Navigation |
| Jerry F. Costello Lock and Dam | Illinois | Randolph | 81 | Significant | Not Available | 1974 | Navigation |
| Lavon Dam | Texas | Collin | 81 | High | Not Available | 1952 | Flood Risk Reduction |
| Nickajack Dam | Tennessee | Marion | 81 | High | Not Available | 1967 | Hydroelectric |
| Mill Creek Structure 1 Dam | Illinois | Clark | 81 | Significant | Not Available | 1980 | Flood Risk Reduction |
| Bull Lake Dam | Wyoming | Fremont | 81 | High | Not Available | 1938 | Flood Risk Reduction |
| Lake McMaster Dam | Illinois | Knox | 81 | High | Not Available | 1981 | Recreation |
| H.K. Thatcher Lock and Dam | Arkansas | Union | 80 | Significant | Not Available | 1983 | Navigation |
| Somerville Dam | Texas | Washington | 80 | High | Not Available | 1967 | Flood Risk Reduction |
| Silt Pond | California | Ventura | 80 | High | Not Available | — | Other |
| Slurry Impoundment No. 1 | Alabama | Tuscaloosa | 80 | Low | Not Available | — | |
| Long Branch Dam | Missouri | Macon | 80 | High | Not Available | 1978 | Flood Risk Reduction |
| Non Potable Reservoir Dam 4 | Colorado | El Paso | 80 | Low | Not Available | 1958 | Flood Risk Reduction |
| Silt Pond | California | Los Angeles | 80 | High | Not Available | — | Other |
| Pond 11 | California | Santa Clara | 80 | High | Not Available | — | Other |
| Illinois Power Company Lake Dam | Illinois | Vermilion | 80 | Low | Not Available | 1954 | Recreation |
| Claiborne Lock and Dam | Alabama | Monroe | 80 | Significant | Not Available | 1971 | Navigation |
| Hillsboro Energy/Deer Run/CRD 1 Dam | Illinois | Montgomery | 80 | High | Not Available | — | Tailings |
| Big Creek Diversion Dam | Iowa | Polk | 80 | High | Not Available | 1970 | Flood Risk Reduction |
| Pond 3 | California | San Joaquin | 80 | High | Not Available | — | Other |
| Funks Dam | California | Colusa | 80 | Low | Not Available | 1975 | Irrigation |
| Branched Oak Dam | Nebraska | Lancaster | 80 | High | Not Available | 1967 | Flood Risk Reduction |
| Kettle Creek Diversion Dam | Colorado | El Paso | 80 | High | Not Available | 1961 | Flood Risk Reduction |
| Summersville Dam - Dike 1 | West Virginia | Nicholas | 80 | High | Not Available | 1965 | Flood Risk Reduction |
| Lehigh Coal & Navigation CO - #14 Plant | Pennsylvania | Schuylkill | 80 | Significant | Not Available | — | Tailings |
| Bowman-Haley Dam | North Dakota | Bowman | 79 | High | Not Available | 1967 | Flood Risk Reduction |
| Mansfield Hollow Dam - Dike C | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Mansfield Hollow Dam - Dike F | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Apple Canyon Lake Dam | Illinois | Jo Daviess | 78 | High | Not Available | 1978 | Recreation |
| Mansfield Hollow Dam - Dike A and B | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Mansfield Hollow Dam - Dike D and E | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Mansfield Hollow Dam | Connecticut | Windham | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Greenup Locks and Dam | Kentucky | Greenup | 78 | Significant | Not Available | 1962 | Navigation |
| Lake George Dam | Illinois | Rock Island | 78 | High | Not Available | 1962 | Recreation |
| Keene Creek Dam | Oregon | Jackson | 78 | High | Not Available | 1959 | Hydroelectric |
| Melvin Price Locks and Dam | Illinois | St. Charles | 77 | Significant | Not Available | 1990 | Navigation |
| Hillboro Energy/Deer Run/Crd 2 Dam | Illinois | Montgomery | 77 | High | Not Available | — | Other |
| D.O.E. Savannah River Steel Creek Dam | South Carolina | Barnwell | 77 | High | Not Available | 1986 | Other |
| Knight Hawk/Prairie Eagle/Slurry 012c Dam | Illinois | Perry | 77 | Significant | Not Available | 2016 | Other |
| Murray Lock and Dam | Arkansas | Pulaski | 77 | Significant | Not Available | 1969 | Navigation |
| Stillwater Dam | Pennsylvania | Susquehanna | 77 | High | Not Available | 1960 | Flood Risk Reduction |
| Hopkinton Dam - Dike H-2 | New Hampshire | Merrimack | 77 | High | Not Available | 1962 | Flood Risk Reduction |
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.