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 |
|---|---|---|---|---|---|---|---|
| Robert Moses - St. Lawrence | New York | St. Lawrence | 167 | High | Satisfactory | 1958 | Hydroelectric |
| Galesville | Oregon | Douglas | 167 | High | Satisfactory | 1985 | Irrigation |
| Lopez | California | San Luis Obispo | 166 | High | Satisfactory | 1969 | Water Supply |
| George B Stevenson | Pennsylvania | Cameron | 166 | High | Satisfactory | 1956 | Flood Risk Reduction |
| Blenheim - Gilboa Lower | New York | Schoharie | 165 | High | Satisfactory | 1974 | Hydroelectric |
| Maerkle | California | San Diego | 165 | High | Satisfactory | 1963 | Water Supply |
| Big Creek Dam No. 3 | California | Fresno | 165 | High | Satisfactory | 1913 | Hydroelectric |
| Balch Afterbay | California | Fresno | 165 | High | Satisfactory | 1928 | Hydroelectric |
| Barney | Oregon | Washington | 165 | High | Satisfactory | 1998 | Water Supply |
| Morgan Dam | New Mexico | San Juan | 165 | High | Satisfactory | 1961 | Other |
| Miramar | California | San Diego | 165 | High | Satisfactory | 1960 | Water Supply |
| Dutch Flat Afterbay | California | Nevada | 165 | Low | Satisfactory | 1965 | Irrigation |
| Paddy Creek Embankment | North Carolina | Burke | 165 | High | Satisfactory | 1919 | Hydroelectric |
| Rector Creek | California | Napa | 164 | High | Satisfactory | 1946 | Water Supply |
| Bailey Mine Fresh Water Imp | Pennsylvania | Greene | 164 | High | Satisfactory | 1984 | Grade Stabilization |
| R. L. Harris | Alabama | Randolph | 163 | High | Satisfactory | 1983 | Hydroelectric |
| Hawks Nest | West Virginia | Fayette | 163 | High | Satisfactory | 1936 | Hydroelectric |
| Empire Mine Tailings Basin Dam | Michigan | Marquette | 163 | Significant | Satisfactory | 1975 | Tailings |
| Senac | Colorado | Arapahoe | 163 | High | Satisfactory | 1990 | Water Supply |
| 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 |
| Ponderosa | California | Butte | 160 | Low | Satisfactory | 1962 | Hydroelectric |
| Skookumchuck | Washington | Thurston | 160 | High | Satisfactory | 1970 | Hydroelectric |
| Garvey Reservoir | California | Los Angeles | 160 | High | Satisfactory | 1954 | Water Supply |
| Juncal | California | Santa Barbara | 160 | High | Satisfactory | 1930 | Other |
| Linville | North Carolina | Burke | 160 | High | Satisfactory | 1919 | Hydroelectric |
| 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 |
| Tugalo | Georgia | Habersham | 155 | High | Satisfactory | 1923 | Hydroelectric |
| Wyman | Maine | Somerset | 155 | High | Satisfactory | 1930 | Hydroelectric |
| Bear Swamp - North Dike | Massachusetts | Franklin | 155 | Low | Satisfactory | 1974 | Hydroelectric |
| Big Creek Dam No. 6 | California | Madera | 155 | High | Satisfactory | 1923 | Hydroelectric |
| Table Rock Reservoir Dam | South Carolina | Pickens | 155 | High | Satisfactory | 1925 | Water Supply |
| Slickrock Creek | California | Shasta | 155 | Significant | Satisfactory | 2004 | Water Supply |
| Pensacola | Oklahoma | Mayes | 155 | High | Satisfactory | 1940 | Hydroelectric |
| Lewiston | New York | Niagara | 155 | High | Satisfactory | 1963 | Hydroelectric |
| Mountain Home | Colorado | Costilla | 153 | High | Satisfactory | 1908 | Irrigation |
| Mt. Storm Lake Dam | West Virginia | Grant | 153 | High | Satisfactory | 1964 | Other |
| Big Dalton | California | Los Angeles | 153 | High | Satisfactory | 1929 | Flood Risk Reduction |
| Russelton Slurry Pond No 3 | Pennsylvania | Allegheny | 153 | Low | Satisfactory | 1967 | Other |
| Ward Impoundment (Lower) Dam | West Virginia | Kanawha | 152 | Significant | Satisfactory | — | Tailings |
| Loveland Water Storage | Colorado | Larimer | 152 | High | Satisfactory | 1977 | Water Supply |
| Eleven Mile Canyon | Colorado | Park | 151 | High | Satisfactory | 1932 | Water Supply |
| Penn Forest | Pennsylvania | Carbon | 151 | High | Satisfactory | 1998 | Water Supply |
| Monksville Dam | New Jersey | Passaic | 150 | High | Satisfactory | 1986 | Water Supply |
| R. W. Matthews | California | Trinity | 150 | High | Satisfactory | 1962 | 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.