Browse Dams
92,766 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 92,766 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 |
|---|---|---|---|---|---|---|---|
| Cliffside Active Ash Basin Downstream Dam | North Carolina | Cleveland | 120 | High | Fair | 1972 | Tailings |
| Jamie L. Whitten Lock and Dam | Mississippi | Tishomingo | 120 | High | Not Available | 1983 | Navigation |
| Edwards Reservoir | California | Santa Barbara | 120 | High | Satisfactory | 1985 | Water Supply |
| Boonton Dam | New Jersey | Morris | 120 | High | Satisfactory | 1905 | Water Supply |
| Martins Fork Dam | Kentucky | Harlan | 120 | High | Not Available | 1978 | Flood Risk Reduction |
| Holt Lock and Dam | Alabama | Tuscaloosa | 120 | High | Not Available | 1968 | Navigation |
| Cranks Creek Lake Dam | Kentucky | Harlan | 120 | High | Poor | 1963 | Recreation |
| Red Mountain Reservoir | California | San Diego | 120 | High | Satisfactory | 1985 | Water Supply |
| Fawn Mine #91 Refuse Impoundment | Pennsylvania | Butler | 120 | High | Fair | - | Other |
| Maple Creek Slurry Pond 1 | Pennsylvania | Washington | 120 | High | Satisfactory | 1973 | Other |
| Big Creek Dam No. 2 | California | Fresno | 120 | High | Satisfactory | 1917 | Hydroelectric |
| Lake Desmet (South Dam) | Wyoming | Johnson | 120 | High | Fair | 1975 | Water Supply |
| Elizabeth Mine Tp-1 | Vermont | Orange | 120 | High | Satisfactory | 1958 | Tailings |
| Hebgen Dam | Montana | Gallatin | 120 | High | Satisfactory | 1915 | Hydroelectric |
| Lemolo No 1 | Oregon | Douglas | 120 | High | Fair | 1955 | Hydroelectric |
| Big Creek | California | Tuolumne | 120 | High | Satisfactory | 1969 | Water Supply |
| Matrullas Dam | Puerto Rico | Orocovis | 120 | High | Unsatisfactory | 1934 | Hydroelectric |
| Cordry Lake Dam | Indiana | Brown | 120 | Significant | Fair | 1969 | |
| Rocky Mtn Ps Lower Main Dam | Georgia | Floyd | 120 | High | Satisfactory | 1993 | Hydroelectric |
| Grayson Dam | Kentucky | Carter | 120 | High | Not Available | 1968 | Flood Risk Reduction |
| Rocky Mtn Ps Upper Dam and Fused Overpump Spillway | Georgia | Floyd | 120 | High | Satisfactory | 1995 | Hydroelectric |
| Optima Dam | Oklahoma | Texas | 120 | High | Not Available | 1978 | Flood Risk Reduction |
| Cave Creek | Arizona | Maricopa | 120 | Low | Not Rated | 1923 | Flood Risk Reduction |
| Loyalhanna Dam | Pennsylvania | Westmoreland | 120 | High | Not Available | 1942 | Flood Risk Reduction |
| Milton Seaman | Colorado | Larimer | 120 | High | Satisfactory | 1948 | Water Supply |
| Guajataca Dam | Puerto Rico | Isabela | 120 | High | Poor | 1927 | Hydroelectric |
| Tiger Creek Afterbay | California | Amador | 120 | High | Fair | 1931 | Hydroelectric |
| Bluecat Lake Dam | Tennessee | Maury | 120 | High | Satisfactory | 1979 | |
| Lake Desmet (North Dam) | Wyoming | Johnson | 120 | High | Fair | 1975 | Water Supply |
| Continental | Colorado | Hinsdale | 120 | High | Satisfactory | 1927 | Irrigation |
| Cecil M. Harden Dam | Indiana | Parke | 119 | High | Not Available | 1960 | Flood Risk Reduction |
| Wylie | South Carolina | York | 119 | High | Satisfactory | 1925 | Hydroelectric |
| Lewiston Reservoir Dike | New York | Niagara | 119 | High | Satisfactory | 1963 | Hydroelectric |
| Otter Brook Dam | New Hampshire | Cheshire | 119 | High | Not Available | 1958 | Flood Risk Reduction |
| Ute Creek | Colorado | Grand | 119 | Low | Not Rated | 1976 | Water Supply |
| T Or C Site 8c Dam | New Mexico | Sierra | 119 | High | Fair | 1981 | Flood Risk Reduction |
| Green Verdugo | California | Los Angeles | 118 | High | Satisfactory | 1953 | Water Supply |
| Dewey Dam | Kentucky | Floyd | 118 | High | Not Available | 1949 | Flood Risk Reduction |
| Lake Gaillard Dam | Connecticut | New Haven | 118 | High | Satisfactory | 1929 | Water Supply |
| Upper North River #76 | Virginia | Augusta | 118 | High | Satisfactory | - | Flood Risk Reduction |
| Two Rivers Diamond A Dam | New Mexico | Chaves | 118 | High | Not Available | 1963 | Flood Risk Reduction |
| Grassy Lake Dam | Wyoming | Teton | 118 | High | Not Available | 1939 | Irrigation |
| Massena Intake | New York | St. Lawrence | 118 | High | Satisfactory | 1958 | Hydroelectric |
| Cave Buttes | Arizona | Maricopa | 118 | High | Satisfactory | 1980 | Flood Risk Reduction |
| Alpine Lake Dam | Missouri | Warren | 118 | High | Satisfactory | 2000 | Recreation |
| Villa Park | California | Orange | 118 | High | Satisfactory | 1963 | Flood Risk Reduction |
| Settlement Canyon | Utah | Tooele | 118 | High | Fair | 1966 | Irrigation |
| Wirtz Dam | Texas | Burnet | 118 | High | Satisfactory | 1951 | Irrigation |
| John Martin Dam - Fort Lyon Protective Works | Colorado | Bent | 118 | High | Not Available | 1943 | Flood Risk Reduction |
| Elwood Dam | Nebraska | Gosper | 118 | High | Satisfactory | 1976 | Irrigation |
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.