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 |
|---|---|---|---|---|---|---|---|
| Dashields Locks and Dam | Pennsylvania | Allegheny | 44 | Significant | Not Available | 1929 | Navigation |
| Laurel Run | Pennsylvania | Lackawanna | 44 | High | Fair | 1894 | Recreation |
| Faylor Lake (Pa-636) | Pennsylvania | Snyder | 43 | High | Fair | 1983 | Recreation |
| Pine Run No 1 | Pennsylvania | Luzerne | 43 | High | Poor | 1884 | Recreation |
| Martins Creek Ses Ash Basin No 4 | Pennsylvania | Northampton | 43 | Significant | Fair | 1989 | Other |
| F | Pennsylvania | Luzerne | 43 | High | Fair | 1916 | Water Supply |
| Cloe Lake | Pennsylvania | Jefferson | 43 | High | Satisfactory | 1909 | Recreation |
| Colvin Sedimentation Pond | Pennsylvania | Greene | 43 | Significant | Satisfactory | 1980 | Other |
| Ethel Springs | Pennsylvania | Westmoreland | 43 | High | Poor | 1900 | Water Supply |
| Lloydell | Pennsylvania | Cambria | 43 | High | Fair | 1906 | Water Supply |
| Upper Owl Creek | Pennsylvania | Schuylkill | 43 | High | Satisfactory | 1921 | Water Supply |
| Maple Creek Silt Pond B | Pennsylvania | Washington | 43 | High | Satisfactory | 1977 | Other |
| Barneston (Pa 432) | Pennsylvania | Chester | 43 | High | Fair | 1983 | Flood Risk Reduction |
| Hemlock Lake | Pennsylvania | Indiana | 43 | High | Satisfactory | 1970 | Recreation |
| Meadow Grounds | Pennsylvania | Fulton | 43 | High | Satisfactory | 1964 | Recreation |
| Williams Run | Pennsylvania | Cambria | 43 | High | Fair | 1956 | Water Supply |
| Spring Valley Lake | Pennsylvania | Allegheny | 43 | Low | Fair | 1964 | Recreation |
| Big Spring | Pennsylvania | Westmoreland | 43 | High | Satisfactory | 1907 | Water Supply |
| Pole Run No 4 | Pennsylvania | Schuylkill | 42 | High | Satisfactory | 1877 | Water Supply |
| 14-North Impoundment | Pennsylvania | Allegheny | 42 | High | Satisfactory | - | Other |
| Anderson Creek | Pennsylvania | Clearfield | 42 | High | Fair | 1903 | Water Supply |
| Hilltown (Pa-625) | Pennsylvania | Bucks | 42 | High | Fair | 1980 | Flood Risk Reduction |
| Mount Airy | Pennsylvania | Monroe | 42 | High | Poor | 1974 | Recreation |
| Pleasant Valley | Pennsylvania | Carbon | 42 | Low | Satisfactory | 1967 | Recreation |
| Rock Run | Pennsylvania | Chester | 42 | High | Fair | 1917 | Water Supply |
| Breskin No 2 | Pennsylvania | Westmoreland | 42 | High | Satisfactory | 1971 | Recreation |
| Pike Township | Pennsylvania | Clearfield | 42 | Low | Not Rated | 1975 | Water Supply |
| Ryerson Station | Pennsylvania | Greene | 42 | High | Unsatisfactory | 1960 | Recreation |
| Lake Meade | Pennsylvania | Adams | 42 | High | Poor | 1967 | Recreation |
| Dutch Fork | Pennsylvania | Washington | 42 | High | Satisfactory | 1959 | Recreation |
| Village Two At New Hope | Pennsylvania | Bucks | 41 | Undetermined | Not Rated | 1980 | Flood Risk Reduction |
| Conneautville (Pa-112) | Pennsylvania | Crawford | 41 | High | Fair | 1984 | Flood Risk Reduction |
| Humboldt Reservoir | Pennsylvania | Luzerne | 41 | Significant | Fair | 1911 | Water Supply |
| Trout Run | Pennsylvania | Westmoreland | 41 | High | Fair | 1927 | Water Supply |
| Fawn Lake | Pennsylvania | Pike | 41 | High | Fair | 1971 | Recreation |
| Doverspike No 1 | Pennsylvania | Jefferson | 41 | High | Satisfactory | 1970 | Recreation |
| Waste House No 3 | Pennsylvania | Schuylkill | 41 | High | Satisfactory | 1902 | Water Supply |
| Thorn Run | Pennsylvania | Butler | 40 | High | Satisfactory | 1903 | Water Supply |
| John P. Murtha Locks and Dam | Pennsylvania | Westmoreland | 40 | Significant | Not Available | 1967 | Navigation |
| Silt Pond | Pennsylvania | Lawrence | 40 | Significant | Not Available | - | Other |
| Tafton Dike | Pennsylvania | Pike | 40 | High | Satisfactory | 1926 | Hydroelectric |
| Saul Run (Pa-458) | Pennsylvania | Mercer | 40 | High | Satisfactory | 1963 | Flood Risk Reduction |
| Tubmill | Pennsylvania | Westmoreland | 40 | High | Fair | 1907 | Water Supply |
| Looney Lake | Pennsylvania | Mercer | 40 | Significant | Satisfactory | 1952 | Recreation |
| Midfield Sedimentation Pond | Pennsylvania | Allegheny | 40 | High | Satisfactory | 1988 | Flood Risk Reduction |
| New Holland Reservoir | Pennsylvania | Lancaster | 40 | High | Fair | 1953 | Water Supply |
| Griffin | Pennsylvania | Lackawanna | 40 | High | Poor | 1888 | Water Supply |
| Raven Run No 3 | Pennsylvania | Schuylkill | 40 | High | Fair | 1885 | Water Supply |
| Rainbow (Pa-460) | Pennsylvania | Crawford | 40 | High | Fair | 1964 | Flood Risk Reduction |
| Indian Run | Pennsylvania | Berks | 40 | High | Unsatisfactory | 1890 | 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.