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 1401–1425 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Warrington (Pa-611) Bucks County | 45 | 1976 | High | Fair |
| Warrior Ridge Huntingdon County | 27 | 1906 | Low | Satisfactory |
| Washburn Lake Chester County | 18 | 1955 | Significant | Fair |
| Washington No 3 Washington County | 48 | 1895 | High | Satisfactory |
| Washington No 4 Washington County | 63 | 1903 | High | Fair |
| Washington School Washington County | 23 | 1976 | High | Fair |
| Waste House No 1 Schuylkill County | 57 | 1884 | High | Satisfactory |
| Waste House No 3 Schuylkill County | 41 | 1902 | High | Satisfactory |
| Waste Management & Processors - Wmpi Schuylkill County | 20 | — | High | Not Available |
| Wastewater Treatment Chester County | 45 | 1985 | Significant | Fair |
| Water Control Structure Philadelphia County | 10 | — | Undetermined | Not Rated |
| Waterfall Way Detention Basin Washington County | 27 | — | Significant | Satisfactory |
| Water Supply Luzerne County | 8 | 1936 | Low | Fair |
| Watres Lackawanna County | 135 | 1925 | High | Satisfactory |
| Way Lake Susquehanna County | 12 | 1992 | Low | Satisfactory |
| Wayne Glen Chester County | 14 | — | High | Not Rated |
| Waynesburg Lakes Greene County | 26 | — | Low | Fair |
| Waynewood Wayne County | 9 | — | Low | Fair |
| Weaver Lake Westmoreland County | 25 | 1961 | High | Fair |
| Weisner Hollow Slurry Jefferson County | 192 | — | High | Fair |
| Welkinweir Chester County | 16 | 1937 | High | Fair |
| Werrys Lake Monroe County | 12 | 1929 | Low | Fair |
| West 17th Street Detention Erie County | 13 | 2001 | Significant | Fair |
| Westcolang Lake Pike County | 13 | 1912 | High | Satisfactory |
| Westinghouse Electric Westmoreland County | 24 | — | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.