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 1351–1375 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bradford City No 2 McKean County | 44 | 1886 | High | Satisfactory |
| Braddock Locks and Dam Allegheny County | 33 | 1905 | Significant | Not Available |
| Brace Brook Wayne County | 23 | 1925 | Low | Fair |
| Boyertown Reservoir Berks County | 55 | 1929 | High | Satisfactory |
| Boyd Keller Reservoir Clinton County | 53 | 1956 | High | Poor |
| Bowmans Marsh Luzerne County | 10 | — | Low | Satisfactory |
| Borg Dam Tioga County | 15 | 1984 | High | Not Available |
| Boldy Butler County | 25 | 1967 | Low | Not Available |
| Blue Ridge Det Butler County | 16 | 1990 | Significant | Not Rated |
| Blue Mountain Lake Monroe County | 9 | 1908 | High | Fair |
| Blue Marsh Dam - Dikes A and B Berks County | 25 | 1977 | High | Not Available |
| Blue Marsh Dam - Bernville Levee Berks County | 30 | 1977 | High | Not Available |
| Blue Marsh Dam Berks County | 100 | 1977 | High | Not Available |
| Blue Giant Meadow Luzerne County | 12 | 1912 | Significant | Satisfactory |
| Blair Gap Blair County | 47 | 1907 | High | Fair |
| Blacksville #1 Freshwater Imp Greene County | 20 | 1974 | Significant | Satisfactory |
| Black Rock Montgomery County | 11 | 1900 | Low | Satisfactory |
| Black Pond Bradford County | 13 | 1900 | Low | Not Rated |
| Bishop Jefferson County | — | — | Significant | Not Rated |
| Billings Pond Pike County | 9 | 1865 | Low | Poor |
| Billets Pond Bradford County | 15 | — | Low | Not Rated |
| Big Spring Westmoreland County | 43 | 1907 | High | Satisfactory |
| Big Elk Lake Susquehanna County | 12 | 1860 | Significant | Fair |
| Big Boulder Lake B Carbon County | 19 | 1957 | High | Satisfactory |
| Big Boulder Lake A Carbon County | 21 | 1957 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.