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 |
|---|---|---|---|---|---|---|---|
| Lopez | California | San Luis Obispo | 166 | High | Satisfactory | 1969 | Water Supply |
| George B Stevenson | Pennsylvania | Cameron | 166 | High | Satisfactory | 1956 | Flood Risk Reduction |
| Barney | Oregon | Washington | 165 | High | Satisfactory | 1998 | Water Supply |
| Big Creek Dam No. 3 | California | Fresno | 165 | High | Satisfactory | 1913 | Hydroelectric |
| Dutch Flat Afterbay Dam | California | Nevada | 165 | Low | Satisfactory | 1965 | Irrigation |
| Medina Lake Dam | Texas | Medina | 165 | High | Satisfactory | 1913 | Irrigation |
| Maerkle | California | San Diego | 165 | High | Satisfactory | 1963 | Water Supply |
| Miramar | California | San Diego | 165 | High | Satisfactory | 1960 | Water Supply |
| Balch Afterbay | California | Fresno | 165 | High | Satisfactory | 1928 | Hydroelectric |
| Blenheim - Gilboa Lower | New York | Schoharie | 165 | High | Satisfactory | 1974 | Hydroelectric |
| Paddy Creek Embankment | North Carolina | Burke | 165 | High | Satisfactory | 1919 | Hydroelectric |
| Morgan Dam | New Mexico | San Juan | 165 | High | Satisfactory | 1961 | Other |
| Bailey Mine Fresh Water Imp | Pennsylvania | Greene | 164 | High | Satisfactory | 1984 | Grade Stabilization |
| Rector Creek | California | Napa | 164 | High | Satisfactory | 1946 | Water Supply |
| Senac | Colorado | Arapahoe | 163 | High | Satisfactory | 1990 | Water Supply |
| Hawks Nest | West Virginia | Fayette | 163 | High | Satisfactory | 1936 | Hydroelectric |
| R. L. Harris | Alabama | Randolph | 163 | High | Satisfactory | 1983 | Hydroelectric |
| Empire Mine Tailings Basin Dam | Michigan | Marquette | 163 | Significant | Satisfactory | 1975 | Tailings |
| Mark Edson | California | El Dorado | 162 | High | Satisfactory | 1962 | Water Supply |
| Poway | California | San Diego | 162 | High | Satisfactory | 1971 | Water Supply |
| Sutherland | California | San Diego | 162 | High | Satisfactory | 1954 | Other |
| Cuchillo-Negro Dam | New Mexico | Sierra | 161 | High | Satisfactory | 1991 | Flood Risk Reduction |
| Linville | North Carolina | Burke | 160 | High | Satisfactory | 1919 | Hydroelectric |
| Ponderosa Dam | California | Butte | 160 | Low | Satisfactory | 1962 | Hydroelectric |
| Skookumchuck | Washington | Thurston | 160 | High | Satisfactory | 1970 | Hydroelectric |
| Juncal | California | Santa Barbara | 160 | High | Satisfactory | 1930 | Other |
| Garvey Reservoir | California | Los Angeles | 160 | High | Satisfactory | 1954 | Water Supply |
| Cobbs Creek Regional Water Supply Dam (Main Dam A) | Virginia | Cumberland | 160 | High | Satisfactory | 2024 | Water Supply |
| Brick Flat Pit Containment | California | Shasta | 160 | Low | Satisfactory | 1994 | Water Supply |
| Westlake Reservoir | California | Los Angeles | 158 | High | Satisfactory | 1972 | Water Supply |
| Lake Patagonia | Arizona | Santa Cruz | 157 | High | Satisfactory | 1968 | Recreation |
| Santa Ynez Canyon | California | Los Angeles | 157 | High | Satisfactory | 1968 | Other |
| Nepaug Dam | Connecticut | Litchfield | 156 | High | Satisfactory | 1918 | Water Supply |
| Big Creek Dam No. 6 | California | Madera | 155 | High | Satisfactory | 1923 | Hydroelectric |
| Lewiston Pump Generating Plant | New York | Niagara | 155 | High | Satisfactory | 1963 | Hydroelectric |
| Tugalo | Georgia | Habersham | 155 | High | Satisfactory | 1923 | Hydroelectric |
| Bear Swamp - North Dike | Massachusetts | Franklin | 155 | Low | Satisfactory | 1974 | Hydroelectric |
| Slickrock Creek | California | Shasta | 155 | Significant | Satisfactory | 2004 | Water Supply |
| Pensacola | Oklahoma | Mayes | 155 | High | Satisfactory | 1940 | Hydroelectric |
| Wyman | Maine | Somerset | 155 | High | Satisfactory | 1930 | Hydroelectric |
| Big Dalton | California | Los Angeles | 153 | High | Satisfactory | 1929 | Flood Risk Reduction |
| Russelton Slurry Pond No 3 | Pennsylvania | Allegheny | 153 | Low | Satisfactory | 1967 | Other |
| Mt. Storm Lake Dam | West Virginia | Grant | 153 | High | Satisfactory | 1964 | Other |
| Mountain Home | Colorado | Costilla | 153 | High | Satisfactory | 1908 | Irrigation |
| Ward Impoundment (Lower) Dam | West Virginia | Kanawha | 152 | Significant | Satisfactory | - | Tailings |
| Loveland Water Storage | Colorado | Larimer | 152 | High | Satisfactory | 1977 | Water Supply |
| Ice House Main | California | El Dorado | 152 | High | Satisfactory | 1959 | Hydroelectric |
| Penn Forest | Pennsylvania | Carbon | 151 | High | Satisfactory | 1998 | Water Supply |
| Eleven Mile Canyon | Colorado | Park | 151 | High | Satisfactory | 1932 | Water Supply |
| Monksville Dam | New Jersey | Passaic | 150 | High | Satisfactory | 1986 | Water Supply |
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.