Browse Dams
1,492 dams in the National Inventory of Dams.
National Inventory of Dams
Browse 1,492 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 |
|---|---|---|---|---|---|---|---|
| Ringtown Reservoir No 6 | Pennsylvania | Schuylkill | 50 | High | Fair | 1921 | Water Supply |
| Lake Wilhelm (Pa-475) | Pennsylvania | Mercer | 50 | High | Satisfactory | 1969 | Flood Risk Reduction |
| Cooling Pond A | Pennsylvania | Armstrong | 49 | Low | Not Rated | 1995 | Other |
| Lower Tumbling Run | Pennsylvania | Schuylkill | 49 | High | Poor | 1832 | Water Supply |
| Eisenhuth Reservoir | Pennsylvania | Schuylkill | 49 | High | Fair | 1875 | Water Supply |
| Stephen Foster | Pennsylvania | Bradford | 49 | High | Fair | 1977 | Recreation |
| Bridgeport (Pa-655) | Pennsylvania | Westmoreland | 49 | High | Satisfactory | 1992 | Flood Risk Reduction |
| Breckenridge Detention | Pennsylvania | Allegheny | 49 | Significant | Satisfactory | — | Flood Risk Reduction |
| Washington No 3 | Pennsylvania | Washington | 48 | High | Satisfactory | 1895 | Grade Stabilization |
| Wilmore | Pennsylvania | Cambria | 48 | High | Poor | 1908 | Water Supply |
| East Stroudsburg | Pennsylvania | Monroe | 48 | High | Satisfactory | 1936 | Water Supply |
| Shaver's Creek | Pennsylvania | Huntingdon | 48 | High | Satisfactory | 1961 | Recreation |
| Blair Gap | Pennsylvania | Blair | 47 | High | Fair | 1907 | Water Supply |
| Core Creek (Pa-620) | Pennsylvania | Bucks | 47 | High | Fair | 1976 | Flood Risk Reduction |
| Foster Joseph Sayers Dam - Howard Levee | Pennsylvania | Centre | 47 | High | Not Available | 1966 | Flood Risk Reduction |
| Saw Mill | Pennsylvania | Montgomery | 47 | High | Fair | 1968 | Flood Risk Reduction |
| Pocono Lake | Pennsylvania | Monroe | 47 | High | Satisfactory | 1957 | Hydroelectric |
| Bradford City No 3 | Pennsylvania | McKean | 47 | High | Satisfactory | 1898 | Water Supply |
| Dunmore No 1 | Pennsylvania | Lackawanna | 47 | High | Fair | 1877 | Water Supply |
| Gardner Creek | Pennsylvania | Luzerne | 47 | High | Fair | 1902 | Water Supply |
| Spruce Run Reservoir | Pennsylvania | Union | 46 | High | Fair | 1957 | Water Supply |
| Nemacolin | Pennsylvania | Washington | 46 | Low | Fair | 1964 | Irrigation |
| Encke | Pennsylvania | Somerset | 46 | Low | Not Rated | 1994 | Recreation |
| Locust Lake | Pennsylvania | Schuylkill | 46 | High | Fair | 1954 | Recreation |
| Hamburg Flood Control (Pa-476) | Pennsylvania | Berks | 46 | High | Fair | 1965 | Flood Risk Reduction |
| Robin Run (Pa-612) | Pennsylvania | Bucks | 46 | High | Fair | 1971 | Flood Risk Reduction |
| Pond # 3 | Pennsylvania | Luzerne | 45 | Significant | Not Available | — | Tailings |
| Sediment Pond In Pit | Pennsylvania | Susquehanna | 45 | Low | Not Available | — | Tailings |
| High Point Lake | Pennsylvania | Somerset | 45 | High | Satisfactory | 1965 | Recreation |
| Curtis | Pennsylvania | Lackawanna | 45 | High | Poor | 1887 | Water Supply |
| Jack Clutter | Pennsylvania | Washington | 45 | High | Satisfactory | 1983 | Water Supply |
| Dunmore No 7 Reservoir | Pennsylvania | Lackawanna | 45 | High | Poor | 1872 | Water Supply |
| Lake George | Pennsylvania | Somerset | 45 | High | Poor | 1989 | Recreation |
| New Kernsville | Pennsylvania | Berks | 45 | High | Fair | 1949 | Recreation |
| Kahle Lake | Pennsylvania | Venango | 45 | Significant | Not Rated | 1974 | Recreation |
| Wastewater Treatment | Pennsylvania | Chester | 45 | Significant | Fair | 1985 | Other |
| Raccoon Creek | Pennsylvania | Beaver | 45 | High | Fair | 1948 | Recreation |
| Crescent Lake | Pennsylvania | Pike | 45 | High | Fair | 1959 | Recreation |
| Upper Kittanning | Pennsylvania | Blair | 45 | High | Fair | 1887 | Water Supply |
| Clark Mills (Pa-490) | Pennsylvania | Mercer | 45 | High | Fair | 1971 | Flood Risk Reduction |
| Canonsburg | Pennsylvania | Washington | 45 | High | Satisfactory | 1943 | Recreation |
| Warrington (Pa-611) | Pennsylvania | Bucks | 45 | High | Fair | 1976 | Flood Risk Reduction |
| Keystone State Park | Pennsylvania | Westmoreland | 45 | Significant | Not Rated | 1910 | Recreation |
| Allison Reservoir | Pennsylvania | Fayette | 45 | High | Fair | 1917 | Recreation |
| Salt Run Reservoir | Pennsylvania | Cameron | 44 | High | Poor | 1911 | Water Supply |
| Dark Hollow | Pennsylvania | Mifflin | 44 | High | Fair | 1934 | Recreation |
| Laurel Run | Pennsylvania | Lackawanna | 44 | High | Fair | 1894 | Recreation |
| Fawn Lake | Pennsylvania | Schuylkill | 44 | High | Satisfactory | 1972 | Recreation |
| Dashields Locks and Dam | Pennsylvania | Allegheny | 44 | Significant | Not Available | 1929 | Navigation |
| Bradford City No 2 | Pennsylvania | McKean | 44 | High | Satisfactory | 1886 | 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.