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 |
|---|---|---|---|---|---|---|---|
| Surry Mountain Dam | New Hampshire | Cheshire | 83 | High | Not Available | 1941 | Flood Risk Reduction |
| D.O.E. Savannah River Pond C | South Carolina | Barnwell | 82 | Low | Not Available | 1957 | Other |
| Rowdy Branch Dam | Kentucky | Perry | 82 | High | Not Available | - | 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 |
| Robert S. Kerr Lock and Dam | Oklahoma | Le Flore | 82 | High | Not Available | 1970 | Navigation |
| Elk River Dam | Tennessee | Franklin | 82 | High | Not Available | - | Flood Risk Reduction |
| Lake Mcmaster Dam | Illinois | Knox | 81 | High | Not Available | 1981 | Recreation |
| Bull Lake Dam | Wyoming | Fremont | 81 | High | Not Available | 1938 | Flood Risk Reduction |
| Lavon Dam | Texas | Collin | 81 | High | Not Available | 1952 | Flood Risk Reduction |
| Mill Creek Structure 1 Dam | Illinois | Clark | 81 | Significant | Not Available | 1980 | Flood Risk Reduction |
| Jerry F. Costello Lock and Dam | Illinois | Randolph | 81 | Significant | Not Available | 1974 | Navigation |
| Nickajack Dam | Tennessee | Marion | 81 | High | Not Available | 1967 | Hydroelectric |
| Somerville Dam | Texas | Washington | 80 | High | Not Available | 1967 | Flood Risk Reduction |
| Funks Dam | California | Colusa | 80 | Low | Not Available | 1975 | Irrigation |
| Slurry Impoundment No. 1 | Alabama | Tuscaloosa | 80 | Low | Not Available | - | |
| Big Creek Diversion Dam | Iowa | Polk | 80 | High | Not Available | 1970 | Flood Risk Reduction |
| Silt Pond | California | Ventura | 80 | High | Not Available | - | Other |
| Lehigh Coal & Navigation CO - #14 Plant | Pennsylvania | Schuylkill | 80 | Significant | Not Available | - | Tailings |
| Long Branch Dam | Missouri | Macon | 80 | High | Not Available | 1978 | Flood Risk Reduction |
| Claiborne Lock and Dam | Alabama | Monroe | 80 | Significant | Not Available | 1971 | Navigation |
| Silt Pond | California | Los Angeles | 80 | High | Not Available | - | Other |
| Summersville Dam - Dike 1 | West Virginia | Nicholas | 80 | High | Not Available | 1965 | Flood Risk Reduction |
| Illinois Power Company Lake Dam | Illinois | Vermilion | 80 | Low | Not Available | 1954 | Recreation |
| Pond 11 | California | Santa Clara | 80 | High | Not Available | - | Other |
| Non Potable Reservoir Dam 4 | Colorado | El Paso | 80 | Low | Not Available | 1958 | Flood Risk Reduction |
| Hillsboro Energy/Deer Run/Crd 1 Dam | Illinois | Montgomery | 80 | High | Not Available | - | Tailings |
| Pond 3 | California | San Joaquin | 80 | High | Not Available | - | Other |
| H.K. Thatcher Lock and Dam | Arkansas | Union | 80 | Significant | Not Available | 1983 | Navigation |
| 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 |
| 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 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 |
| Mansfield Hollow Dam - Dike F | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Mansfield Hollow Dam - Dike A and B | Connecticut | Tolland | 78 | High | Not Available | 1952 | Flood Risk Reduction |
| Lake George Dam | Illinois | Rock Island | 78 | High | Not Available | 1962 | Recreation |
| Greenup Locks and Dam | Kentucky | Greenup | 78 | Significant | Not Available | 1962 | Navigation |
| Keene Creek Dam | Oregon | Jackson | 78 | High | Not Available | 1959 | Hydroelectric |
| Apple Canyon Lake Dam | Illinois | Jo Daviess | 78 | High | Not Available | 1978 | Recreation |
| Murray Lock and Dam | Arkansas | Pulaski | 77 | Significant | Not Available | 1969 | Navigation |
| D.O.E. Savannah River Steel Creek Dam | South Carolina | Barnwell | 77 | High | Not Available | 1986 | Other |
| Melvin Price Locks and Dam | Illinois | St. Charles | 77 | Significant | Not Available | 1990 | Navigation |
| Knight Hawk/Prairie Eagle/Slurry 012c Dam | Illinois | Perry | 77 | Significant | Not Available | 2016 | Other |
| Hillboro Energy/Deer Run/Crd 2 Dam | Illinois | Montgomery | 77 | High | Not Available | - | Other |
| 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.