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 726–750 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Upper Castanea Reservoir Clinton County | 30 | 1869 | High | Unsatisfactory |
| Upper Kittanning Blair County | 45 | 1887 | High | Fair |
| Upper Mount Pleasant Luzerne County | 20 | 1882 | High | Poor |
| Upper Owl Creek Schuylkill County | 43 | 1921 | High | Satisfactory |
| Upper Rickards Pike County | 9 | 1937 | High | Fair |
| Upper Ridge Westmoreland County | 25 | 1915 | High | Poor |
| Upper Tumbling Run Schuylkill County | 55 | 1836 | High | Poor |
| Upper West Deer Lake Allegheny County | 24 | — | High | Satisfactory |
| Valley-Hi Eagle Lake Fulton County | 25 | 1964 | High | Satisfactory |
| Varcoe (Pa-415) Wayne County | 20 | 1960 | High | Fair |
| Wadham Creek Luzerne County | 30 | 1959 | High | Satisfactory |
| Walden Woods Allegheny County | 17 | 2000 | High | Satisfactory |
| Walker Farm Lagoon Chester County | 26 | 2002 | High | Satisfactory |
| Walker Lake Pike County | 15 | 1953 | High | Satisfactory |
| Wangaum Falls Wayne County | 30 | 1925 | High | Poor |
| Warren H Ohl Clinton County | 59 | 1965 | High | Poor |
| Warrington (Pa-611) Bucks County | 45 | 1976 | High | Fair |
| Washington No 3 Washington County | 48 | 1895 | High | Satisfactory |
| Washington No 4 Washington County | 63 | 1903 | High | Fair |
| Washington School Washington County | 23 | 1976 | High | Fair |
| Waste House No 1 Schuylkill County | 57 | 1884 | High | Satisfactory |
| Waste House No 3 Schuylkill County | 41 | 1902 | High | Satisfactory |
| Waste Management & Processors - Wmpi Schuylkill County | 20 | — | High | Not Available |
| Watres Lackawanna County | 135 | 1925 | High | Satisfactory |
| Wayne Glen Chester County | 14 | — | High | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.