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 251–275 of 310
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Dorys Pike County | 10 | 1919 | Significant | Fair |
| Devon Detention Chester County | 8 | 1986 | Significant | Fair |
| Deer Lake Sullivan County | 7 | — | Significant | Not Rated |
| David Mine Equalization Pond No 3 Armstrong County | 21 | — | Significant | Not Rated |
| Dashields Locks and Dam Allegheny County | 44 | 1929 | Significant | Not Available |
| C.W. Bill Young Lock and Dam Allegheny County | 36 | 1934 | Significant | Not Available |
| Cumberland No. 2 Sediment Pond. Greene County | 12 | 2003 | Significant | Satisfactory |
| Cumberland No 1 Sed Pond Greene County | 25 | 1985 | Significant | Satisfactory |
| Crossing No 5 Chester County | 13 | 2005 | Significant | Fair |
| Crossing No 3 Chester County | 13 | — | Significant | Fair |
| Cresswell Upper Mercer County | 5 | 2002 | Significant | Not Rated |
| Cresswell Lower Mercer County | 15 | 2002 | Significant | Not Rated |
| Country Bend Bucks County | 12 | 1986 | Significant | Fair |
| Conway Sportsman's Club Upper Butler County | 21 | 1917 | Significant | Not Rated |
| Conashaugh Lake Pike County | 14 | 1969 | Significant | Fair |
| Comet Lake Franklin County | 38 | 1962 | Significant | Fair |
| Colvin Sedimentation Pond Greene County | 43 | 1980 | Significant | Satisfactory |
| Cold Storage Perry County | 11 | — | Significant | Satisfactory |
| Clear Lake Crawford County | 11 | 1855 | Significant | Not Rated |
| Ciccotti Bradford County | 12 | 1968 | Significant | Fair |
| Children's Lake Cumberland County | 11 | — | Significant | Unsatisfactory |
| Chester Co. Prison Storage Lagoon Chester County | 34 | — | Significant | Satisfactory |
| Cherry Tree Farm York County | 32 | 1980 | Significant | Satisfactory |
| Cherry Farm Basin #1 Delaware County | 8 | 2004 | Significant | Fair |
| Caputo Pike County | 20 | — | Significant | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.