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 751–775 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Bailey No. 8 Sediment Pond Greene County | 53 | — | High | Satisfactory |
| Bailey No 5 West Saddle Greene County | 68 | — | High | Satisfactory |
| Bailey No. 5 Sedimentation Pond Greene County | 60 | — | High | Satisfactory |
| Bailey Mine Slurry Impoundment Greene County | 315 | 1984 | High | Satisfactory |
| Bailey Mine Fresh Water Imp Greene County | 164 | 1984 | High | Satisfactory |
| Bailey Mine Area No. 6 Sed Pond Greene County | 58 | — | High | Satisfactory |
| Bailey Mine Area No. 3 Slurry Greene County | 337 | 2014 | High | Satisfactory |
| Bailey Mine Area No. 3 Saddle D Greene County | 32 | 2014 | High | Satisfactory |
| Bailey Mine Area No. 3 Saddle C Greene County | 37 | 2014 | High | Satisfactory |
| Bailey Mine Area No. 3 Saddle B Greene County | 27 | 2014 | High | Satisfactory |
| Bailey Mine Area No. 3 Saddle A Greene County | 67 | 2014 | High | Satisfactory |
| Aylesworth Creek Dam Lackawanna County | 90 | 1970 | High | Not Available |
| Auburn Schuylkill County | 51 | 1950 | High | Fair |
| Askon Hollow Fayette County | 28 | 1963 | High | Fair |
| Ashton South Washington County | 19 | — | High | Fair |
| Ashland Reservoir Schuylkill County | 80 | 1926 | High | Poor |
| Ash Basin No 3 Snyder County | 117 | 1971 | High | Fair |
| Ash Basin No 2 Snyder County | 136 | 1955 | High | Fair |
| Ash Basin No 1 Snyder County | 22 | 1949 | High | Fair |
| Arrowhead Lake Monroe County | 18 | 1954 | High | Fair |
| Antietam Adams County | 70 | 1953 | High | Fair |
| Andorra Springs Basin B Montgomery County | 16 | — | High | Fair |
| Anderson Creek Clearfield County | 42 | 1903 | High | Fair |
| Alvin R. Bush Dam Clinton County | 165 | 1962 | High | Not Available |
| Allison Reservoir Fayette County | 45 | 1917 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.