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 176–200 of 378
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Little Lehigh Lehigh County | 8 | 1919 | Low | Satisfactory |
| Lingertots Pond Luzerne County | 10 | 1957 | Low | Satisfactory |
| Lily Pond Pike County | 13 | 1898 | Low | Fair |
| Lily Lake Luzerne County | 10 | 1973 | Low | Satisfactory |
| Lewis Pond Tioga County | 16 | 1971 | Low | Not Available |
| Leonard George Greene County | 50 | 2001 | Low | Satisfactory |
| Lenape Lake Monroe County | 8 | 1927 | Low | Poor |
| Lee Smith Dam Susquehanna County | 19 | 1964 | Low | Not Available |
| Leachate Equalization Impoundment Elk County | 95 | 1992 | Low | Not Rated |
| Lawson Wyoming County | 28 | 1970 | Low | Not Available |
| Laurel Wood Westmoreland County | 25 | — | Low | Fair |
| Laurel Ridge Lake Somerset County | 18 | 1956 | Low | Not Rated |
| Laurel Hill Creek Somerset County | 22 | 1954 | Low | Not Rated |
| Laspina Lane Westmoreland County | 21 | 1952 | Low | Satisfactory |
| Lake Wynooska Pike County | 9 | 1926 | Low | Poor |
| Lakewood Schuylkill County | 14 | 1915 | Low | Poor |
| Lake Wesauking Bradford County | 7 | 1919 | Low | Not Rated |
| Lake Weiss Lebanon County | 12 | 1890 | Low | Not Rated |
| Lake Watawah Monroe County | 19 | 1922 | Low | Poor |
| Lake Warren Bucks County | 10 | 1935 | Low | Fair |
| Lake Verex Susquehanna County | 16 | 1969 | Low | Satisfactory |
| Lake Trexler Monroe County | 25 | 1962 | Low | Fair |
| Lake Timberline Susquehanna County | 14 | 1958 | Low | Satisfactory |
| Lake Tahoe Somerset County | 20 | 1950 | Low | Not Rated |
| Lakeside Pond Susquehanna County | 12 | 1840 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.