Browse Dams
12,906 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 12,906 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 |
|---|---|---|---|---|---|---|---|
| Culmback | Washington | Snohomish | 262 | High | Satisfactory | 1983 | Hydroelectric |
| Muddy Run Main Dam | Pennsylvania | Lancaster | 260 | High | Satisfactory | 1967 | Hydroelectric |
| Grants Branch Impoundment | Kentucky | Pike | 259 | High | Satisfactory | 1997 | Recreation |
| Tapps Lake Dike No 14 | Washington | Pierce | 256 | Low | Satisfactory | 1911 | Recreation |
| Sugar Pine | California | Placer | 251 | High | Satisfactory | 1981 | Other |
| Nantahala | North Carolina | Macon | 250 | High | Satisfactory | 1942 | Hydroelectric |
| Big Creek Dam No. 7 | California | Madera | 250 | High | Satisfactory | 1951 | Hydroelectric |
| Cardinal Fly Ash No. 2 Dam | Ohio | Jefferson | 250 | High | Satisfactory | 2014 | Tailings |
| Rampart | Colorado | El Paso | 250 | High | Satisfactory | 1970 | Hydroelectric |
| Erie Basin 2 | Minnesota | St. Louis | 250 | Significant | Satisfactory | 1978 | Tailings |
| Slab Creek | California | El Dorado | 250 | High | Satisfactory | 1967 | Hydroelectric |
| Cedar Springs | California | San Bernardino | 249 | High | Satisfactory | 1971 | Water Supply |
| Cobble Mountain Reservoir Dam | Massachusetts | Hampden | 245 | High | Satisfactory | 1930 | Water Supply |
| Hughes Hollow Slurry Impoundment | Pennsylvania | Greene | 245 | High | Satisfactory | - | Other |
| Lower Bear Dam | California | Amador | 245 | High | Satisfactory | 1952 | Hydroelectric |
| Morris | California | Los Angeles | 245 | High | Satisfactory | 1935 | Other |
| Labelle Slurry Pond #3 | Pennsylvania | Fayette | 245 | High | Satisfactory | 1958 | Other |
| Mcelroy Run Dam | West Virginia | Pleasants | 243 | High | Satisfactory | 1978 | Tailings |
| Cardinal Fly Ash No. 1 Dam | Ohio | Jefferson | 242 | High | Satisfactory | 1974 | Tailings |
| McKays Point Diversion | California | Tuolumne | 242 | Significant | Satisfactory | 1989 | Hydroelectric |
| Smith Mountain Combination Pump Storage | Virginia | Pittsylvania | 237 | High | Satisfactory | 1964 | Hydroelectric |
| Caonillas Dam | Puerto Rico | Jayuya | 235 | High | Satisfactory | 1948 | Hydroelectric |
| Saluda | South Carolina | Lexington | 234 | High | Satisfactory | 1930 | Hydroelectric |
| L. L. Anderson | California | Placer | 231 | High | Satisfactory | 1965 | Irrigation |
| Los Vaqueros | California | Contra Costa | 231 | High | Satisfactory | 1997 | Water Supply |
| Chino Mines Tailings Dam No. 7 | New Mexico | Grant | 230 | Significant | Satisfactory | 1988 | Tailings |
| Calderwood | Tennessee | Blount | 230 | High | Satisfactory | 1930 | Hydroelectric |
| Masonry Dam | Washington | King | 230 | High | Satisfactory | 1914 | Hydroelectric |
| Peters | California | Marin | 230 | High | Satisfactory | 1954 | Water Supply |
| Pacificorp - Electric Lake | Utah | Emery | 229 | High | Satisfactory | 1974 | Water Supply |
| Trampas Canyon | California | Orange | 229 | High | Satisfactory | 1975 | Other |
| Rollins Dam | California | Nevada | 228 | High | Satisfactory | 1965 | Water Supply |
| Pit No. 7 Diversion | California | Shasta | 228 | High | Satisfactory | 1965 | Hydroelectric |
| Ramona | California | San Diego | 228 | High | Satisfactory | 1988 | Water Supply |
| Solutia #15 Dam | Tennessee | Maury | 227 | Low | Satisfactory | 1977 | |
| New Lake Arrowhead | California | San Bernardino | 225 | High | Satisfactory | 1976 | Water Supply |
| Big Santa Anita | California | Los Angeles | 225 | High | Satisfactory | 1927 | Flood Risk Reduction |
| San Joaquin Reservoir | California | Orange | 224 | High | Satisfactory | 1966 | Water Supply |
| Little Dell | Utah | Salt Lake | 224 | High | Satisfactory | 1993 | Water Supply |
| John Amos Flyash Dam | West Virginia | Putnam | 223 | High | Satisfactory | 1978 | Tailings |
| Ku Ghent Atb 2 | Kentucky | Carroll | 222 | High | Satisfactory | 1994 | Other |
| Cheesman | Colorado | Jefferson | 221 | High | Satisfactory | 1905 | Water Supply |
| Big Tujunga No. 1 | California | Los Angeles | 220 | High | Satisfactory | 1931 | Flood Risk Reduction |
| Portugues Dam | Puerto Rico | Ponce | 220 | High | Satisfactory | 2015 | Flood Risk Reduction |
| Box Canyon Dam | California | Siskiyou | 220 | High | Satisfactory | 1970 | Flood Risk Reduction |
| La Grande | Washington | Thurston | 217 | High | Satisfactory | 1944 | Hydroelectric |
| Bear Creek | North Carolina | Jackson | 215 | High | Satisfactory | 1954 | Hydroelectric |
| Toa Vaca Dam | Puerto Rico | Villalba | 215 | High | Satisfactory | 1972 | Irrigation |
| Iron Canyon Dam | California | Shasta | 214 | High | Satisfactory | 1965 | Hydroelectric |
| Yadkin Narrows | North Carolina | Stanly | 214 | High | Satisfactory | 1917 | Hydroelectric |
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.