Pennsylvania Dams
1,481 dams tracked by the National Inventory of Dams
Total Dams
1,481
High Hazard
780
52.7%
Poor / Unsatisfactory
215
Average Age
80 yrs
Hazard Classification
High780 (52.7%)
Significant310 (20.9%)
Low378 (25.5%)
Condition Assessment
Satisfactory415 (28.0%)
Fair547 (36.9%)
Poor / Unsatisfactory215 (14.5%)
Not Rated304 (20.5%)
Federal
57
State
152
Local
351
Private
911
Tallest Dams
- Harmar Refuse Bank410 ft
- Little Blue Run400 ft
- Cumberland No. 1 Slurry Pond 1380 ft
- Cumberland No. 2 Slurry Pond370 ft
- Bailey Mine Area No. 3 Slurry337 ft
High Hazard Dams
Poor Condition Dams
- Little Pine CreekPoor
- North ForkPoor
- DehartPoor
- Mill RunPoor
- West Newton SludgeUnsatisfactory
All Dams in Pennsylvania
Showing 901–925 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Kapp Susquehanna County | 25 | 1990 | Low | Satisfactory |
| Kahle Lake Venango County | 45 | 1974 | Significant | Not Rated |
| Kaercher Creek (Pa 478) Berks County | 56 | 1971 | High | Fair |
| Juniata Lake Clearfield County | 10 | 1934 | Significant | Fair |
| Johnston Butler County | 26 | 1978 | Low | Not Rated |
| John P. Murtha Locks and Dam Westmoreland County | 40 | 1967 | Significant | Not Available |
| John C Youngman Lycoming County | 101 | 1951 | High | Fair |
| John C Smith Bedford County | 59 | 1932 | High | Poor |
| Jewell Pond Greene County | 15 | — | Significant | Fair |
| Jennings Pond Wyoming County | 11 | 1900 | High | Poor |
| Jeffers Pond Susquehanna County | 13 | 1919 | Low | Satisfactory |
| Jeddo Coal CO - Jeddo #8 Prep Plant Luzerne County | 20 | — | Low | Not Available |
| Jeannette (Mountain Valley Lake) Westmoreland County | 36 | 1889 | Significant | Fair |
| J C Bacon Beaver County | 96 | 1956 | High | Fair |
| Janesville Clearfield County | 12 | — | Low | Not Rated |
| Jacobs Creek Dauphin County | 10 | 1999 | Significant | Satisfactory |
| Jack Clutter Washington County | 45 | 1983 | High | Satisfactory |
| Isers Run Reservoir Somerset County | 20 | 1982 | Low | Not Rated |
| Isabella Fresh Water Fayette County | 122 | — | Significant | Fair |
| Irrigation Pond Adams County | 26 | 1989 | Low | Not Rated |
| Ironworks Bucks County | 53 | 1943 | High | Fair |
| Interlaken Lackawanna County | 10 | 1928 | High | Satisfactory |
| Industrial Wastes, INC South Pond Beaver County | 28 | 1990 | Low | Satisfactory |
| Indspec No 3 Butler County | 59 | 1975 | High | Fair |
| Indspec No 2 Butler County | 27 | 1950 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.