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 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| York Haven East Channel Dam Dauphin County | 8 | 1918 | Low | Satisfactory |
| Yingst Dauphin County | 16 | 1999 | Significant | Satisfactory |
| Yellow Creek Indiana County | 62 | 1969 | High | Satisfactory |
| Woodridge Lake Washington County | 26 | 1957 | High | Satisfactory |
| Wittmer Road Detention Allegheny County | 25 | 1990 | High | Satisfactory |
| Wisecarver Greene County | 35 | 1931 | High | Satisfactory |
| Wilsonville Pike County | 68 | 1926 | High | Satisfactory |
| William L. Cochran Impounding Blair County | 60 | 1898 | High | Satisfactory |
| Wildwood Lake Wayne County | 18 | 1956 | High | Satisfactory |
| White Heron Monroe County | 34 | 1930 | High | Satisfactory |
| Whipporwill Schuylkill County | 11 | — | Significant | Satisfactory |
| Whetstone No 2 Storage Elk County | 36 | 1962 | High | Satisfactory |
| Wheatstone Detention Basin Lebanon County | 8 | — | Significant | Satisfactory |
| West Surge Pond Beaver County | 27 | 1974 | Significant | Satisfactory |
| Westcolang Lake Pike County | 13 | 1912 | High | Satisfactory |
| Way Lake Susquehanna County | 12 | 1992 | Low | Satisfactory |
| Watres Lackawanna County | 135 | 1925 | High | Satisfactory |
| Waterfall Way Detention Basin Washington County | 27 | — | Significant | Satisfactory |
| Waste House No 3 Schuylkill County | 41 | 1902 | High | Satisfactory |
| Waste House No 1 Schuylkill County | 57 | 1884 | High | Satisfactory |
| Washington No 3 Washington County | 48 | 1895 | High | Satisfactory |
| Warrior Ridge Huntingdon County | 27 | 1906 | Low | Satisfactory |
| Walker Lake Pike County | 15 | 1953 | High | Satisfactory |
| Walker Farm Lagoon Chester County | 26 | 2002 | High | Satisfactory |
| Walden Woods Allegheny County | 17 | 2000 | High | Satisfactory |
Page 1 of 17Next
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.