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 701–725 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Briar Creek Lake Pa-497 Columbia County | 39 | 1968 | High | Fair |
| Breskin No 2 Westmoreland County | 42 | 1971 | High | Satisfactory |
| Bradys Run Beaver County | 33 | 1949 | High | Poor |
| Bradys Lake Monroe County | 19 | 2007 | High | Satisfactory |
| Bradford City No 5 McKean County | 68 | 1957 | High | Poor |
| Bradford City No 3 McKean County | 47 | 1898 | High | Satisfactory |
| Bradford City No 2 McKean County | 44 | 1886 | High | Satisfactory |
| Boyertown Reservoir Berks County | 55 | 1929 | High | Satisfactory |
| Boyd Keller Reservoir Clinton County | 53 | 1956 | High | Poor |
| Borg Dam Tioga County | 15 | 1984 | High | Not Available |
| Blue Mountain Lake Monroe County | 9 | 1908 | High | Fair |
| Blue Marsh Dam - Dikes A and B Berks County | 25 | 1977 | High | Not Available |
| Blue Marsh Dam - Bernville Levee Berks County | 30 | 1977 | High | Not Available |
| Blue Marsh Dam Berks County | 100 | 1977 | High | Not Available |
| Blair Gap Blair County | 47 | 1907 | High | Fair |
| Big Spring Westmoreland County | 43 | 1907 | High | Satisfactory |
| Big Boulder Lake B Carbon County | 19 | 1957 | High | Satisfactory |
| Big Boulder Lake A Carbon County | 21 | 1957 | High | Fair |
| Big Bass Lake Lackawanna County | 8 | 1957 | High | Satisfactory |
| Bigan Somerset County | 24 | 1957 | High | Fair |
| Bernhart Berks County | 30 | 1865 | High | Unsatisfactory |
| Berlin Road Detention Basin Westmoreland County | 11 | 2003 | High | Satisfactory |
| Beltzville Dam Carbon County | 177 | 1969 | High | Not Available |
| Belmont Raw Water Basin Philadelphia County | 30 | 1901 | High | Fair |
| Belmont Lake Wayne County | 28 | 1830 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.