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 301–325 of 378
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sedimentation Pond No. 8a Washington County | 25 | — | Low | Not Available |
| Sediment Basin No 3 Lackawanna County | 20 | — | Low | Satisfactory |
| Sediment Basin No 4 Lackawanna County | 21 | 1989 | Low | Satisfactory |
| Sediment Pond In Pit Susquehanna County | 45 | — | Low | Not Available |
| Sgl #252 Road A Lycoming County | 7 | — | Low | Not Rated |
| Sgl #252 Road B Lycoming County | 9 | — | Low | Not Rated |
| Sharpes Pond Wyoming County | 19 | 1919 | Low | Fair |
| Shenandoah Creek Schuylkill County | 34 | 1935 | Low | Satisfactory |
| Shenango Lakes Lower Crawford County | 20 | — | Low | Not Rated |
| Sheppard Adams County | 23 | 1934 | Low | Not Rated |
| Sickler Pond Lackawanna County | 9 | 1910 | Low | Fair |
| Silver Lake Bucks County | 8 | 1939 | Low | Fair |
| Silver Lake Wayne County | 10 | 1923 | Low | Fair |
| Slovene Camp Lawrence County | 33 | 1966 | Low | Not Rated |
| Slurry Pond No. 1 Greene County | 90 | — | Low | Not Available |
| Snyner-Westhaver Cumberland County | 18 | 1979 | Low | Not Rated |
| Sones Pond Sullivan County | 20 | 1919 | Low | Not Rated |
| South Slurry Pond Washington County | 60 | — | Low | Not Available |
| Splash Sullivan County | 10 | 1958 | Low | Not Rated |
| Spring Garden Bucks County | 9 | 1920 | Low | Satisfactory |
| Spring Mill Lehigh County | 27 | 1900 | Low | Fair |
| Spring Valley Lake Allegheny County | 43 | 1964 | Low | Fair |
| Sprint Lake Pike County | 11 | — | Low | Fair |
| Stairway Lake Pike County | 12 | 1955 | Low | Not Rated |
| Stark Lackawanna County | 20 | 1850 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.