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 326–350 of 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Renaissance Regional Basin Montgomery County | 15 | — | Significant | Satisfactory |
| R G Struble Lake (Pa-431) Chester County | 31 | 1971 | High | Satisfactory |
| Richardson Washington County | 26 | 1976 | High | Satisfactory |
| Ridley Park Lake Delaware County | 15 | 1998 | High | Satisfactory |
| Rinehart Montgomery County | 12 | 1988 | Significant | Satisfactory |
| Roamingwood Lake Wayne County | 32 | 1971 | High | Satisfactory |
| Robena Pond No 6 Greene County | 115 | 1980 | Low | Satisfactory |
| Robena Slurry Pond No 4 Greene County | 135 | 1955 | Low | Satisfactory |
| Robinson Fork (Pa-647) Washington County | 95 | 1977 | High | Satisfactory |
| Rolling Greens (Bethlehem Twp Det) Northampton County | 12 | 1986 | High | Satisfactory |
| Rudy Pond York County | 10 | 2005 | Significant | Satisfactory |
| Russelton Slurry Pond No 3 Allegheny County | 153 | 1967 | Low | Satisfactory |
| Saddle Lake Wyoming County | 24 | 1965 | High | Satisfactory |
| Safe Harbor Lancaster County | 75 | 1930 | Significant | Satisfactory |
| Saltlick Cambria County | 116 | 1913 | High | Satisfactory |
| Saul Run (Pa-458) Mercer County | 40 | 1963 | High | Satisfactory |
| Sediment Basin No 3 Lackawanna County | 20 | — | Low | Satisfactory |
| Sediment Basin No 4 Lackawanna County | 21 | 1989 | Low | Satisfactory |
| Shaggers Inn Waterfowl Clearfield County | 17 | 1989 | High | Satisfactory |
| Shaver's Creek Huntingdon County | 48 | 1961 | High | Satisfactory |
| Shawnee Lake Monroe County | 22 | 1927 | High | Satisfactory |
| Shawnee Pond Monroe County | 11 | 2008 | Significant | Satisfactory |
| Shenandoah Creek Schuylkill County | 34 | 1935 | Low | Satisfactory |
| Silver Creek Reservoir Schuylkill County | 38 | 1850 | High | Satisfactory |
| Simon Pond Washington County | — | — | Significant | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.