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 1201–1225 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Shaggers Inn Waterfowl Clearfield County | 17 | 1989 | High | Satisfactory |
| Sharpes Pond Wyoming County | 19 | 1919 | Low | Fair |
| Shaver's Creek Huntingdon County | 48 | 1961 | High | Satisfactory |
| Shaw Dam Adams County | — | — | Significant | Poor |
| Shawnee Lake Monroe County | 22 | 1927 | High | Satisfactory |
| Shawnee Lake Bedford County | 56 | 1950 | High | Fair |
| Shawnee Pond Monroe County | 11 | 2008 | Significant | Satisfactory |
| Shenandoah Creek Schuylkill County | 34 | 1935 | Low | Satisfactory |
| Shenango Dam Mercer County | 68 | 1965 | High | Not Available |
| Shenango Lakes Lower Crawford County | 20 | — | Low | Not Rated |
| Sheppard Adams County | 23 | 1934 | Low | Not Rated |
| Sheppard Myers York County | 38 | 1933 | High | Poor |
| Sherwood Oaks Lake Butler County | 16 | 1981 | High | Fair |
| Shickshinny Lake Luzerne County | 33 | 1965 | High | Poor |
| Shillington Memorial Park Berks County | 9 | 1936 | Significant | Fair |
| Shirfs Run Cambria County | 15 | 1925 | Significant | Not Rated |
| Shohola Marsh Pike County | 34 | 1968 | High | Fair |
| Shuey Lake Lebanon County | 8 | 1958 | Undetermined | Not Rated |
| Sickler Pond Lackawanna County | 9 | 1910 | Low | Fair |
| Siegel Marsh Erie County | 12 | 1958 | Significant | Not Rated |
| Silt Pond Lawrence County | 40 | — | Significant | Not Available |
| Silver Creek Reservoir Schuylkill County | 38 | 1850 | High | Satisfactory |
| Silver Lake Bucks County | 8 | 1939 | Low | Fair |
| Silver Lake Wayne County | 10 | 1923 | Low | Fair |
| Silver Lake York County | 6 | 1910 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.