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 1–25 of 310
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Zelina Erie County | 15 | 1974 | Significant | Not Rated |
| Yingst Dauphin County | 16 | 1999 | Significant | Satisfactory |
| Wood Bradford County | 10 | — | Significant | Not Rated |
| Wohelo Lake Franklin County | 28 | 1953 | Significant | Fair |
| Williams Adams County | 39 | 1981 | Significant | Unsatisfactory |
| Williams Erie County | 10 | — | Significant | Not Rated |
| Whitney Lake Wayne County | 12 | 1934 | Significant | Fair |
| Whitford Ridge Detention Basin Chester County | 13 | 1992 | Significant | Fair |
| Whitetail C Franklin County | 23 | — | Significant | Fair |
| Whipporwill Schuylkill County | 11 | — | Significant | Satisfactory |
| Wheatstone Detention Basin Lebanon County | 8 | — | Significant | Satisfactory |
| West Whiteland Business Park Chester County | 12 | — | Significant | Poor |
| Westtown Chester County | 14 | 1912 | Significant | Fair |
| West Surge Pond Beaver County | 27 | 1974 | Significant | Satisfactory |
| West 17th Street Detention Erie County | 13 | 2001 | Significant | Fair |
| Waterfall Way Detention Basin Washington County | 27 | — | Significant | Satisfactory |
| Wastewater Treatment Chester County | 45 | 1985 | Significant | Fair |
| Washburn Lake Chester County | 18 | 1955 | Significant | Fair |
| Walden Pond Butler County | 18 | — | Significant | Not Rated |
| Virgin Run Fayette County | 34 | 1953 | Significant | Poor |
| Village At Pine Allegheny County | 15 | 1979 | Significant | Satisfactory |
| Verga Pond Pike County | 8 | — | Significant | Satisfactory |
| Van Meter Crawford County | 33 | — | Significant | Poor |
| Valley View Pike County | 18 | 1956 | Significant | Fair |
| Upper Southside Sport Beaver County | 14 | 1979 | Significant | Satisfactory |
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.