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 1101–1125 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Fairways Lower Bucks County | 11 | 1989 | High | Satisfactory |
| Fairmount Philadelphia County | 32 | 1927 | Significant | Satisfactory |
| F Luzerne County | 43 | 1916 | High | Fair |
| Exton Lake Westmoreland County | 14 | — | Significant | Fair |
| Evans City Waterworks No 1 Butler County | 38 | 1954 | High | Fair |
| Ethel Springs Westmoreland County | 43 | 1900 | High | Poor |
| Estates of Audubon Montgomery County | 20 | 1992 | Significant | Poor |
| Errickson Fish Pond Lehigh County | 15 | 1982 | High | Fair |
| Erie Pool K Dam Crawford County | 11 | 1971 | Low | Poor |
| Erie Pool #9 Dam Crawford County | 22 | 1968 | Low | Satisfactory |
| Erie Pool #7 Dam Crawford County | 15 | 1967 | Low | Fair |
| Erie Pool #4 Dam Crawford County | 12 | 1980 | Low | Fair |
| Enlow Fork (Pa-648) Washington County | 76 | 1987 | High | Satisfactory |
| Encke Somerset County | 46 | 1994 | Low | Not Rated |
| Emsworth Locks and Dams Allegheny County | 25 | 1938 | Significant | Not Available |
| Emmons Harvey Pond Wyoming County | 16 | 1964 | Low | Not Available |
| Emerald No.2 Sed Pond 1 Greene County | 18 | — | High | Satisfactory |
| Emerald No. 2 Main Valley Eastern Greene County | 270 | — | High | Satisfactory |
| Emerald No. 2 Back Valley Western Greene County | 90 | — | High | Satisfactory |
| Emerald No. 1 Sed Pond 11 Greene County | 25 | — | High | Satisfactory |
| Emerald No. 1 Main Valley Eastern Greene County | 310 | — | High | Satisfactory |
| Emerald No. 1 Back Valley Western Greene County | 90 | — | High | Satisfactory |
| Emerald Lake Washington County | 38 | 1912 | Significant | Satisfactory |
| Elroy Face Indiana County | 25 | 1954 | High | Fair |
| Elm Lake Pike County | 28 | 1972 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.