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 151–175 of 195
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| El-Do Lake Monroe County | 13 | — | High | Poor |
| Egelman Reservoir Berks County | 15 | 1901 | High | Poor |
| Edinboro Lake Erie County | 18 | 1909 | High | Poor |
| Echo Lake Northampton County | 10 | 1911 | Significant | Poor |
| Ebensburg Storage Cambria County | 16 | 1923 | High | Poor |
| Eaton Reservoir Erie County | 22 | 1939 | High | Poor |
| East Lake Susquehanna County | 7 | 1919 | Low | Poor |
| Dutch Run Cambria County | 8 | — | Significant | Poor |
| Dunmore No 7 Reservoir Lackawanna County | 45 | 1872 | High | Poor |
| Dehart Dauphin County | 105 | 1940 | High | Poor |
| Deer Lake Schuylkill County | 12 | 1925 | High | Poor |
| Decker Swamp Pike County | 11 | 1951 | Low | Poor |
| Dalton Run Somerset County | 61 | 1905 | High | Poor |
| Curtis Lackawanna County | 45 | 1887 | High | Poor |
| Craft Pond Wayne County | 19 | 1892 | High | Poor |
| Coleman Lackawanna County | 7 | 1924 | Low | Poor |
| Cold Springs Park Chester County | 30 | — | Low | Poor |
| Cokeburg Washington County | 27 | 1902 | High | Poor |
| Christman Berks County | 27 | 1972 | High | Poor |
| Cherry Valley Washington County | 33 | 1947 | High | Poor |
| Chapman Warren County | 24 | 1949 | High | Poor |
| Carbondale No 4 Lackawanna County | 28 | 1892 | High | Poor |
| Carbaugh Run Adams County | 35 | 1960 | High | Poor |
| Canonsburg No 2 Washington County | 36 | 1932 | High | Poor |
| Cambridge Springs Crawford County | 14 | — | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.