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 1451–1475 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Wildwood Lake Wayne County | 18 | 1956 | High | Satisfactory |
| William L. Cochran Impounding Blair County | 60 | 1898 | High | Satisfactory |
| William Penn Pike County | 10 | 1916 | Low | Fair |
| Williams Erie County | 10 | — | Significant | Not Rated |
| Williams Adams County | 39 | 1981 | Significant | Unsatisfactory |
| Williams Bridge Reservoir Lackawanna County | 54 | 1893 | High | Fair |
| Williams Pond Wayne County | 10 | 1930 | Low | Fair |
| Williams Pond Susquehanna County | 10 | 1919 | Low | Fair |
| Williams Run Cambria County | 43 | 1956 | High | Fair |
| Wilmore Cambria County | 48 | 1908 | High | Poor |
| Wilsonville Pike County | 68 | 1926 | High | Satisfactory |
| Wisecarver Greene County | 35 | 1931 | High | Satisfactory |
| Witmer Monroe County | 9 | 1941 | Low | Not Rated |
| Wittmer Road Detention Allegheny County | 25 | 1990 | High | Satisfactory |
| Wohelo Lake Franklin County | 28 | 1953 | Significant | Fair |
| Wolf Creek Clearfield County | 34 | 1971 | High | Fair |
| Wolf Creek Reservoir Schuylkill County | 73 | 1909 | High | Fair |
| Wolfe Farm Cumberland County | 28 | 1966 | High | Fair |
| Wolf Swamp Run Monroe County | 14 | — | Low | Poor |
| Wood Bradford County | 10 | — | Significant | Not Rated |
| Woodcock Creek Dam Crawford County | 90 | 1973 | High | Not Available |
| Woodpecker Lake Pike County | 8 | — | Low | Fair |
| Woodridge Lake Washington County | 26 | 1957 | High | Satisfactory |
| Woods Edge - Pond A Lancaster County | 11 | — | Low | Not Rated |
| Yellow Creek Indiana County | 62 | 1969 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.