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 376–400 of 547
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Perkins Pond Wayne County | 20 | 1870 | Significant | Fair |
| Perrins Marsh Wyoming County | 6 | 1919 | High | Fair |
| Philadelphia Mills Philadelphia County | 24 | 1994 | High | Fair |
| Philipsburg No 3 (Upper) Centre County | 17 | 1921 | High | Fair |
| Pickerel Pond Pike County | 14 | 1951 | High | Fair |
| Pickering Creek Chester County | 36 | 1928 | High | Fair |
| Pinchot Lake York County | 50 | 1959 | High | Fair |
| Pine Creek (North Park Lake) Allegheny County | 33 | 1936 | High | Fair |
| Pinecrest Lake (Tamaque Lake) Monroe County | 19 | 1927 | Significant | Fair |
| Pine Grove Lancaster County | 65 | 1949 | High | Fair |
| Pine Run (Pa-491) Mercer County | 20 | 1970 | High | Fair |
| Pine Run (Pa-616) Bucks County | 31 | 1974 | High | Fair |
| Pinetree Lake Monroe County | 25 | 1972 | High | Fair |
| Piney Clarion County | 129 | 1924 | High | Fair |
| Plane Nine Blair County | 51 | 1907 | High | Fair |
| Pocono Laurel Lake Monroe County | 11 | — | Significant | Fair |
| Pocono Mountain Water Forest Pike County | 22 | 1975 | Significant | Fair |
| Polk Pond Susquehanna County | 11 | 1996 | Low | Fair |
| Ponderosa Pines Wayne County | 15 | 1970 | High | Fair |
| Pond No 1 Chester County | 71 | 1970 | Low | Fair |
| Pond No 3 Chester County | 28 | — | Low | Fair |
| Posts Pond Susquehanna County | 10 | 1910 | Low | Fair |
| Promised Land Pike County | 16 | 1919 | High | Fair |
| Prospect Pond Sullivan County | 9 | 2001 | High | Fair |
| Pymatuning Crawford County | 50 | 1933 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.