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 576–600 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Pine Run (Pa-491) Mercer County | 20 | 1970 | High | Fair |
| Pine Run (Pa-616) Bucks County | 31 | 1974 | High | Fair |
| Pinetree Lake Monroe County | 25 | 1972 | High | Fair |
| Piney Clarion County | 129 | 1924 | High | Fair |
| Pioneer Lake Indiana County | 21 | — | High | Poor |
| Placid Lake Carbon County | 23 | 1963 | High | Poor |
| Plane Nine Blair County | 51 | 1907 | High | Fair |
| 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 Highlands Monroe County | 20 | 1928 | High | Poor |
| 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 |
| Pole Run No 4 Schuylkill County | 42 | 1877 | High | Satisfactory |
| Ponderosa Pines Wayne County | 15 | 1970 | High | Fair |
| Promised Land Pike County | 16 | 1919 | High | Fair |
| Prompton Dam Wayne County | 140 | 1961 | High | Not Available |
| Prospect Pond Sullivan County | 9 | 2001 | High | Fair |
| Pymatuning Crawford County | 50 | 1933 | High | Fair |
| Quakake Carbon County | 15 | 1897 | High | Satisfactory |
| Queen Lane Raw Water Basin Philadelphia County | 50 | 1900 | High | Fair |
| Quemahoning Somerset County | 100 | 1912 | High | Satisfactory |
| Raccoon Creek Beaver County | 45 | 1948 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.