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 301–325 of 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Paradise Lake No. 1 Fayette County | 10 | 1973 | Significant | Satisfactory |
| Patsys Lake Fayette County | 35 | 1900 | High | Satisfactory |
| Patterson Beaver County | 14 | 1825 | Low | Satisfactory |
| Peace Valley (Pa-617) Bucks County | 66 | 1973 | High | Satisfactory |
| Penn Forest Carbon County | 151 | 1998 | High | Satisfactory |
| Penn Scenic View Pond Somerset County | 22 | — | High | Satisfactory |
| Pikes Creek Luzerne County | 65 | 1911 | High | Satisfactory |
| Pine Crest Lake Pike County | 8 | — | Low | Satisfactory |
| Pine Hollow Detention Allegheny County | 22 | 1999 | Significant | Satisfactory |
| Pine Run Schuylkill County | 75 | 1933 | High | Satisfactory |
| Pine Run Flood Retarding Montgomery County | 21 | 2014 | High | Satisfactory |
| Pittsburgh Cut Flower Allegheny County | — | — | Significant | Satisfactory |
| Pleasant Valley Carbon County | 42 | 1967 | Low | Satisfactory |
| Pleasant Valley Estates Monroe County | 14 | 2009 | High | Satisfactory |
| Pngc Reservoir No 6 Allegheny County | 11 | — | High | Satisfactory |
| Pocahontas Monroe County | 13 | 1911 | High | Satisfactory |
| Pocono Lake Monroe County | 47 | 1957 | High | Satisfactory |
| Pocono Mountain Lake Pike County | 22 | 1973 | High | Satisfactory |
| Pocono Woodland Lake Pike County | 13 | 1977 | High | Satisfactory |
| Poe Centre County | 33 | 1938 | High | Satisfactory |
| Pohopoco Creek Carbon County | 18 | 1909 | Low | Satisfactory |
| Pole Run No 4 Schuylkill County | 42 | 1877 | High | Satisfactory |
| Quakake Carbon County | 15 | 1897 | High | Satisfactory |
| Quemahoning Somerset County | 100 | 1912 | High | Satisfactory |
| Rapp Run Flood Retarding Montgomery County | 16 | 2014 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.