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 |
|---|---|---|---|---|---|---|---|
| Hart | Pennsylvania | Perry | 22 | Low | Satisfactory | 1978 | Other |
| Lake Akiba | Pennsylvania | Monroe | 22 | High | Poor | 1926 | Recreation |
| Thorn Run | Pennsylvania | Westmoreland | 22 | Low | Satisfactory | 1981 | Grade Stabilization |
| Mill Club | Pennsylvania | Delaware | 22 | Significant | Fair | 1908 | Recreation |
| Knight | Pennsylvania | Montgomery | 22 | High | Fair | 1960 | Recreation |
| Laurel Hill Creek | Pennsylvania | Somerset | 22 | Low | Not Rated | 1954 | Water Supply |
| Spring Lake | Pennsylvania | Monroe | 22 | High | Poor | 1983 | Recreation |
| Oakford Glen | Pennsylvania | Lackawanna | 22 | Significant | Satisfactory | - | Recreation |
| Millers Pond | Pennsylvania | Bradford | 22 | High | Poor | 1919 | Recreation |
| Deer Valley Lake | Pennsylvania | Somerset | 22 | Low | Not Rated | 1953 | Recreation |
| Hidden Valley | Pennsylvania | Dauphin | 22 | High | Fair | 1931 | Recreation |
| Lake Sabula | Pennsylvania | Clearfield | 22 | Significant | Satisfactory | 1870 | Recreation |
| Brier Hill #6 | Pennsylvania | Fayette | 22 | Significant | Fair | 1914 | Flood Risk Reduction |
| Eaton Reservoir | Pennsylvania | Erie | 22 | High | Poor | 1939 | Water Supply |
| Musser Forests | Pennsylvania | Indiana | 22 | High | Fair | 1952 | Irrigation |
| Mountain Lake | Pennsylvania | Somerset | 22 | High | Fair | 1956 | Recreation |
| Eidemiller Lake | Pennsylvania | Westmoreland | 22 | High | Satisfactory | 1992 | Flood Risk Reduction |
| Ash Basin No 1 | Pennsylvania | Snyder | 22 | High | Fair | 1949 | Other |
| Mill Rift Pond | Pennsylvania | Pike | 22 | High | Fair | 1886 | Recreation |
| Penn Scenic View Pond | Pennsylvania | Somerset | 22 | High | Satisfactory | - | Recreation |
| Pocono Mountain Water Forest | Pennsylvania | Pike | 22 | Significant | Fair | 1975 | Recreation |
| Locust Ridge Hunting Club | Pennsylvania | Clinton | 22 | Significant | Satisfactory | 1965 | Recreation |
| Mathay (Pa-459) | Pennsylvania | Mercer | 22 | High | Fair | 1962 | Flood Risk Reduction |
| Pocono Mountain Lake | Pennsylvania | Pike | 22 | High | Satisfactory | 1973 | Recreation |
| Lake May (Section F) | Pennsylvania | Adams | 22 | High | Fair | 1967 | Recreation |
| Pine Hollow Detention | Pennsylvania | Allegheny | 22 | Significant | Satisfactory | 1999 | Flood Risk Reduction |
| Erie Pool #9 Dam | Pennsylvania | Crawford | 22 | Low | Satisfactory | 1968 | Fish and Wildlife Pond |
| Kunkels | Pennsylvania | Schuylkill | 21 | Significant | Poor | 1870 | Recreation |
| Millers | Pennsylvania | Berks | 21 | High | Fair | 1975 | Recreation |
| Ross | Pennsylvania | Susquehanna | 21 | Significant | Fair | 1974 | Recreation |
| Brandonville Pumping Station | Pennsylvania | Schuylkill | 21 | Significant | Unsatisfactory | 1900 | Recreation |
| Flat Rock | Pennsylvania | Philadelphia | 21 | Low | Fair | 1977 | Recreation |
| Chalker | Pennsylvania | Susquehanna | 21 | High | Satisfactory | 1984 | Recreation |
| Strodes Run | Pennsylvania | Mifflin | 21 | Low | Not Rated | 1946 | Recreation |
| Pioneer Lake | Pennsylvania | Indiana | 21 | High | Poor | - | Recreation |
| Laspina Lane | Pennsylvania | Westmoreland | 21 | Low | Satisfactory | 1952 | Recreation |
| Pine Run Flood Retarding | Pennsylvania | Montgomery | 21 | High | Satisfactory | 2014 | Flood Risk Reduction |
| Klines | Pennsylvania | Columbia | 21 | Low | Satisfactory | 1885 | Water Supply |
| Big Boulder Lake A | Pennsylvania | Carbon | 21 | High | Fair | 1957 | Recreation |
| Seph Mack | Pennsylvania | Indiana | 21 | Significant | Not Rated | 1987 | Recreation |
| Sediment Basin No 4 | Pennsylvania | Lackawanna | 21 | Low | Satisfactory | 1989 | Other |
| W H Walker | Pennsylvania | Franklin | 21 | Low | Not Rated | 1930 | Recreation |
| Hidden Valley Pond No 1 | Pennsylvania | Somerset | 21 | High | Fair | 1987 | Irrigation |
| North Arrowhead Lake | Pennsylvania | Monroe | 21 | High | Satisfactory | 1971 | Recreation |
| Lower Woods Pond | Pennsylvania | Wayne | 21 | High | Poor | 1848 | Recreation |
| Lake Courtland | Pennsylvania | Susquehanna | 21 | High | Fair | 1962 | Recreation |
| Bathgate Detention Pond | Pennsylvania | Centre | 21 | High | Fair | 1991 | Flood Risk Reduction |
| Baxter Raw Water Basin | Pennsylvania | Philadelphia | 21 | Low | Poor | 1916 | Water Supply |
| Crawford Lake | Pennsylvania | Monroe | 21 | High | Satisfactory | 1938 | Recreation |
| David Mine Equalization Pond No 3 | Pennsylvania | Armstrong | 21 | Significant | Not Rated | - | Other |
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.