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 401–425 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Quinn Wayne County | 12 | 1946 | High | Poor |
| Lake Placida Lancaster County | 6 | 1910 | High | Satisfactory |
| Lake Pinecrest Luzerne County | 18 | 1959 | High | Poor |
| Lake Paupackan Wayne County | 11 | 1914 | High | Satisfactory |
| Lake Pahagaco York County | 85 | 1956 | High | Fair |
| Lake Oyler Cumberland County | 28 | — | High | Fair |
| Lake Ontelaunee Berks County | 52 | 1935 | High | Fair |
| Lake Oneida Butler County | 38 | 1918 | High | Satisfactory |
| Lake Ondawa Bradford County | 18 | 1919 | High | Fair |
| Lake Netimus Pike County | 20 | 1930 | High | Fair |
| Lake Nessmuk (Pa-601) Tioga County | 52 | 1968 | High | Satisfactory |
| Lake Natalie Lackawanna County | 10 | 1900 | High | Satisfactory |
| Lake Naomi Monroe County | 14 | 1895 | High | Fair |
| Lake Mount Union Huntingdon County | 51 | 1927 | High | Satisfactory |
| Lake Montrose Susquehanna County | 14 | 1919 | High | Poor |
| Lakemont Park Blair County | 12 | 1898 | High | Satisfactory |
| Lake Mokoma Sullivan County | 16 | 1890 | High | Poor |
| Lake Meade Adams County | 42 | 1967 | High | Poor |
| Lake May (Section F) Adams County | 22 | 1967 | High | Fair |
| Lake Maskenozha Pike County | 9 | 1893 | High | Fair |
| Lake Marge Susquehanna County | 30 | — | High | Fair |
| Lake Marburg York County | 107 | 1967 | High | Satisfactory |
| Lake Louise Luzerne County | 16 | 1927 | High | Fair |
| Lake Lattimore Pike County | 15 | 1930 | High | Poor |
| Lake Latonka Mercer County | 34 | 1966 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.