Browse Dams
13,006 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 13,006 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 |
|---|---|---|---|---|---|---|---|
| Mathews | California | Riverside | 264 | High | Satisfactory | 1938 | Water Supply |
| Culmback | Washington | Snohomish | 262 | High | Satisfactory | 1983 | Hydroelectric |
| Muddy Run Main Dam | Pennsylvania | Lancaster | 260 | High | Satisfactory | 1967 | Hydroelectric |
| Wishon Main | California | Fresno | 260 | High | Satisfactory | 1958 | 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 |
| Slab Creek | California | El Dorado | 250 | High | Satisfactory | 1967 | Hydroelectric |
| Rampart | Colorado | El Paso | 250 | High | Satisfactory | 1970 | Hydroelectric |
| Erie Basin 2 | Minnesota | St. Louis | 250 | Significant | Satisfactory | 1978 | Tailings |
| Cardinal Fly Ash No. 2 Dam | Ohio | Jefferson | 250 | High | Satisfactory | 2014 | Tailings |
| Big Creek Dam No. 7 | California | Madera | 250 | High | Satisfactory | 1951 | Hydroelectric |
| Nantahala | North Carolina | Macon | 250 | High | Satisfactory | 1942 | Hydroelectric |
| Lower Bear | California | Amador | 245 | High | Satisfactory | 1952 | Hydroelectric |
| Labelle Slurry Pond #3 | Pennsylvania | Fayette | 245 | High | Satisfactory | 1958 | Other |
| Morris | California | Los Angeles | 245 | High | Satisfactory | 1935 | Other |
| Hughes Hollow Slurry Impoundment | Pennsylvania | Greene | 245 | High | Satisfactory | — | Other |
| Cobble Mountain Reservoir Dam | Massachusetts | Hampden | 245 | High | Satisfactory | 1930 | Water Supply |
| Mcelroy Run Dam | West Virginia | Pleasants | 243 | High | Satisfactory | 1978 | Tailings |
| Mckays Point Diversion | California | Tuolumne | 242 | Significant | Satisfactory | 1989 | Hydroelectric |
| Cardinal Fly Ash No. 1 Dam | Ohio | Jefferson | 242 | High | Satisfactory | 1974 | Tailings |
| Smith Mountain Combination Pump Storage | Virginia | Pittsylvania | 237 | High | Satisfactory | 1964 | Hydroelectric |
| Cheoah | North Carolina | Graham | 236 | High | Satisfactory | 1919 | 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 |
| Masonry Dam | Washington | King | 230 | High | Satisfactory | 1914 | Hydroelectric |
| Calderwood | Tennessee | Blount | 230 | High | Satisfactory | 1930 | Hydroelectric |
| Peters | California | Marin | 230 | High | Satisfactory | 1954 | Water Supply |
| Chino Mines Tailings Dam No. 7 | New Mexico | Grant | 230 | High | Satisfactory | 1988 | Tailings |
| Pacificorp - Electric Lake | Utah | Emery | 229 | High | Satisfactory | 1974 | Water Supply |
| Trampas Canyon | California | Orange | 229 | High | Satisfactory | 1975 | Other |
| Rollins | California | Nevada | 228 | High | Satisfactory | 1965 | Water Supply |
| Ramona | California | San Diego | 228 | High | Satisfactory | 1988 | Water Supply |
| Pit No. 7 Diversion | California | Shasta | 228 | High | Satisfactory | 1965 | Hydroelectric |
| Solutia #15 Dam | Tennessee | Maury | 227 | Low | Satisfactory | 1977 | |
| Big Santa Anita | California | Los Angeles | 225 | High | Satisfactory | 1927 | Flood Risk Reduction |
| New Lake Arrowhead | California | San Bernardino | 225 | High | Satisfactory | 1976 | Water Supply |
| Little Dell | Utah | Salt Lake | 224 | High | Satisfactory | 1993 | Water Supply |
| San Joaquin Reservoir | California | Orange | 224 | High | Satisfactory | 1966 | 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 |
| Mill 5/6 East Tailings Storage Facility | Nevada | Eureka | 220 | Significant | Satisfactory | 2019 | Tailings |
| Box Canyon | 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 |
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.