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 195
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Laurel Run Reservoir Elk County | 84 | 1970 | High | Poor |
| Leavitt Branch (Pa-463) Monroe County | 90 | 1976 | High | Poor |
| Lenape Lake Monroe County | 8 | 1927 | Low | Poor |
| Linden Lake Fayette County | 15 | 1955 | Significant | Poor |
| Little Pine Creek Lycoming County | 113 | 1950 | High | Poor |
| Lonesome Lake Westmoreland County | 24 | — | Low | Poor |
| Lower Fayette County | 36 | 1906 | High | Poor |
| Lower Alford Lake Susquehanna County | 15 | 1919 | High | Poor |
| Lower Mount Pleasant Luzerne County | 28 | 1882 | High | Poor |
| Lower Ridge Westmoreland County | 20 | 1915 | High | Poor |
| Lower Tumbling Run Schuylkill County | 49 | 1832 | High | Poor |
| Lower Woods Pond Wayne County | 21 | 1848 | High | Poor |
| Maggio Estate No 2 Lycoming County | 29 | 1953 | High | Poor |
| Makefield Glen Detention B Bucks County | 12 | 1988 | Significant | Poor |
| Manor Lake Bucks County | 9 | 1930 | Low | Poor |
| Marquette Lake Lebanon County | 27 | 1943 | High | Poor |
| Martindale Cambria County | 22 | 1910 | High | Poor |
| Martin (Pa-419) Wayne County | 29 | 1960 | High | Poor |
| Memorial Lake Lebanon County | 37 | 1946 | High | Poor |
| Meyers Pond Dam Crawford County | 10 | 1967 | Low | Poor |
| Middle Monroe County | 24 | 1922 | High | Poor |
| Middle Creek Lancaster County | 18 | 1971 | High | Poor |
| Millers Pond Bradford County | 22 | 1919 | High | Poor |
| Mill Run Blair County | 100 | 1957 | High | Poor |
| Minersville No 4 Schuylkill County | 36 | 1912 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.