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 426–450 of 547
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Roxbury Franklin County | 60 | — | High | Fair |
| Sandspring Lake Pike County | 15 | — | Low | Fair |
| Sand Spring Run Carbon County | 19 | 1951 | High | Fair |
| Savery Mill Chester County | 14 | 1960 | Significant | Fair |
| Saw Mill Montgomery County | 47 | 1968 | High | Fair |
| Sawmill Run Butler County | 58 | 1968 | High | Fair |
| Saxe Pond Bradford County | 17 | 1929 | High | Fair |
| Scotts Run Berks County | 34 | 1953 | High | Fair |
| Sharpes Pond Wyoming County | 19 | 1919 | Low | Fair |
| Shawnee Lake Bedford County | 56 | 1950 | High | Fair |
| Sherwood Oaks Lake Butler County | 16 | 1981 | High | Fair |
| Shillington Memorial Park Berks County | 9 | 1936 | Significant | Fair |
| Shohola Marsh Pike County | 34 | 1968 | High | Fair |
| Sickler Pond Lackawanna County | 9 | 1910 | Low | Fair |
| Silver Lake Bucks County | 8 | 1939 | Low | Fair |
| Silver Lake Wayne County | 10 | 1923 | Low | Fair |
| Silver Lake York County | 6 | 1910 | High | Fair |
| Sky View Lake (Pa-440) Pike County | 32 | 1964 | High | Fair |
| Sludge Bed No 4 Butler County | 30 | 1984 | High | Fair |
| Sludge Bed No 5 Butler County | 37 | 1983 | High | Fair |
| Sludge Bed No 6 Butler County | 88 | 1983 | High | Fair |
| Smith and Ponzo Washington County | 24 | 1939 | Significant | Fair |
| Solebury Farm Bucks County | 27 | 1953 | High | Fair |
| Somerset Lakes Basin No 2 Chester County | 12 | 1991 | Significant | Fair |
| Spangenberg Lake Lackawanna County | 15 | 1949 | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.