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 826–850 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Jean Luzerne County | 26 | 1950 | High | Fair |
| Lake Jamie Monroe County | 12 | 1956 | High | Satisfactory |
| Lake Irena Luzerne County | 24 | 1963 | Significant | Fair |
| Lake In The Clouds Pike County | 14 | 1952 | High | Satisfactory |
| Lake Heron Perry County | 25 | 1970 | High | Poor |
| Lake Heritage Adams County | 53 | 1966 | High | Poor |
| Lake Henry Wayne County | 11 | 1865 | High | Fair |
| Lake Hauto Carbon County | 33 | 1914 | High | Satisfactory |
| Lake Hamilton Wayne County | 15 | 1954 | High | Poor |
| Lake Greeley Pike County | 10 | 1916 | High | Satisfactory |
| Lake Gordon Bedford County | 84 | 1913 | High | Fair |
| Lake Gloria Somerset County | 29 | 1958 | High | Not Rated |
| Lake George Somerset County | 45 | 1989 | High | Poor |
| Lake Florence Wayne County | 24 | 1948 | Significant | Fair |
| Lake Fernwood Wayne County | 8 | — | Low | Fair |
| Lake Elsie Wayne County | 9 | 1929 | Significant | Satisfactory |
| Lake Ellyn Wayne County | 12 | 1914 | High | Satisfactory |
| Lake Di Cio Washington County | 15 | 1953 | Significant | Satisfactory |
| Lake Courtland Susquehanna County | 21 | 1962 | High | Fair |
| Lake Constance Wayne County | 16 | 1918 | Significant | Fair |
| Lake Conewago Lebanon County | 18 | 1919 | Significant | Satisfactory |
| Lake Como Wayne County | 12 | 1914 | Low | Fair |
| Lake Clemo Wayne County | 7 | 1934 | Low | Poor |
| Lake Chrisann Susquehanna County | 23 | 1961 | High | Fair |
| Lake Choctaw Schuylkill County | 34 | 1974 | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.