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 626–650 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rolling Greens (Bethlehem Twp Det) Northampton County | 12 | 1986 | High | Satisfactory |
| Rose Valley Lake Lycoming County | 26 | 1972 | High | Fair |
| Rossiter Indiana County | 15 | 1919 | High | Poor |
| Roxbury Franklin County | 60 | — | High | Fair |
| Ryerson Station Greene County | 42 | 1960 | High | Unsatisfactory |
| Saddle Lake Wyoming County | 24 | 1965 | High | Satisfactory |
| Saltlick Cambria County | 116 | 1913 | High | Satisfactory |
| Salt Run Reservoir Cameron County | 44 | 1911 | High | Poor |
| Sand Spring Run Carbon County | 19 | 1951 | High | Fair |
| Sandy Run Cambria County | 33 | 1964 | High | Poor |
| Saul Run (Pa-458) Mercer County | 40 | 1963 | High | Satisfactory |
| Saw Creek Club Pike County | 20 | 1919 | High | Poor |
| Saw Mill Montgomery County | 47 | 1968 | High | Fair |
| Sawmill Run Butler County | 58 | 1968 | High | Fair |
| Saxe Pond Bradford County | 17 | 1929 | High | Fair |
| Scotch Valley Estates Columbia County | 14 | 1978 | High | Not Rated |
| Scotts Run Berks County | 34 | 1953 | High | Fair |
| 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 Lake Bedford County | 56 | 1950 | High | Fair |
| Shenango Dam Mercer County | 68 | 1965 | High | Not Available |
| 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 |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.