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 101–125 of 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Emerald No. 1 Back Valley Western Greene County | 90 | — | High | Satisfactory |
| Emerald No. 1 Main Valley Eastern Greene County | 310 | — | High | Satisfactory |
| Emerald No. 1 Sed Pond 11 Greene County | 25 | — | High | Satisfactory |
| Emerald No. 2 Back Valley Western Greene County | 90 | — | High | Satisfactory |
| Emerald No. 2 Main Valley Eastern Greene County | 270 | — | High | Satisfactory |
| Emerald No.2 Sed Pond 1 Greene County | 18 | — | High | Satisfactory |
| Enlow Fork (Pa-648) Washington County | 76 | 1987 | High | Satisfactory |
| Erie Pool #9 Dam Crawford County | 22 | 1968 | Low | Satisfactory |
| Fairmount Philadelphia County | 32 | 1927 | Significant | Satisfactory |
| Fairways Lower Bucks County | 11 | 1989 | High | Satisfactory |
| Falling Springs Luzerne County | 61 | 1905 | Significant | Satisfactory |
| Fawn Lake Schuylkill County | 44 | 1972 | High | Satisfactory |
| Forest Lake Susquehanna County | 12 | 1842 | Significant | Satisfactory |
| Forest Lakes No. 1 York County | 14 | — | Significant | Satisfactory |
| Forest Lakes No. 2 York County | 15 | — | Significant | Satisfactory |
| Foxton Lake Susquehanna County | 18 | 1874 | Low | Satisfactory |
| Fullers Lake Susquehanna County | 9 | 1870 | Significant | Satisfactory |
| Gable Park Woods Lancaster County | 10 | — | High | Satisfactory |
| George B Stevenson Cameron County | 166 | 1956 | High | Satisfactory |
| Glade Run Butler County | 29 | 1955 | High | Satisfactory |
| Glades Butler County | 24 | 1974 | High | Satisfactory |
| Glass Pond No 1 Wayne County | 13 | 1919 | High | Satisfactory |
| Glenwood Lake Lackawanna County | 27 | 1930 | High | Satisfactory |
| Green Lane Reservoir Montgomery County | 87 | 1957 | High | Satisfactory |
| Greenlick Run (Pa-656) Fayette County | 52 | 1973 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.