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 326–350 of 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Eagle Lake Lackawanna County | 12 | 1895 | High | Satisfactory |
| Dutch Fork Washington County | 42 | 1959 | High | Satisfactory |
| Duncan Ave West Flood Control Allegheny County | 34 | — | Significant | Satisfactory |
| Drann Susquehanna County | 12 | 1919 | Low | Satisfactory |
| Doverspike No 1 Jefferson County | 41 | 1970 | High | Satisfactory |
| Donegal Westmoreland County | 32 | 1967 | High | Satisfactory |
| Dinsmore No 2 Washington County | 27 | 1909 | High | Satisfactory |
| Custards Crawford County | 8 | 1972 | Low | Satisfactory |
| Cumberland No. 2 Slurry Pond Greene County | 370 | — | High | Satisfactory |
| Cumberland No. 2 Sediment Pond. Greene County | 12 | 2003 | Significant | Satisfactory |
| Cumberland No. 1 Slurry Pond 1 Greene County | 380 | 1984 | High | Satisfactory |
| Cumberland No 1 Sed Pond Greene County | 25 | 1985 | Significant | Satisfactory |
| Crystal Lake Dam 3 Luzerne County | 20 | 1888 | High | Satisfactory |
| Crystal Lake Dam 2 Luzerne County | 12 | 1888 | High | Satisfactory |
| Crystal Lake Wayne County | 13 | 1926 | High | Satisfactory |
| Crystal Lake Luzerne County | 32 | 1888 | High | Satisfactory |
| Cross Creek (Pa-662) Washington County | 50 | 1983 | High | Satisfactory |
| Cross Creek (Pa-661) Washington County | 82 | 1979 | High | Satisfactory |
| Croops Luzerne County | 28 | 1958 | High | Satisfactory |
| Crescent Lake Susquehanna County | 9 | 1919 | Low | Satisfactory |
| Crawford Lake Monroe County | 21 | 1938 | High | Satisfactory |
| Cowans Gap Fulton County | 32 | 1936 | High | Satisfactory |
| Comfort Lake Susquehanna County | 13 | 1916 | High | Satisfactory |
| Colvin Sedimentation Pond Greene County | 43 | 1980 | Significant | Satisfactory |
| Cold Stream Centre County | 15 | 1889 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.