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 701–725 of 780
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Tobyhanna No 2 Monroe County | 18 | 1951 | High | Poor |
| Todd Spring Reservoir Bedford County | 34 | 1898 | High | Poor |
| Totem Lake Bradford County | 12 | 1919 | High | Poor |
| Towamensing Trails Carbon County | 38 | 1977 | High | Fair |
| Township Line Westmoreland County | 56 | 1900 | High | Poor |
| Township Line (Airport Road) Chester County | 34 | 1935 | High | Fair |
| Trax Farms Washington County | 26 | 1963 | High | Fair |
| Treated Water Pond Washington County | 59 | 1966 | High | Satisfactory |
| Treesdale Impoundment #1 Butler County | 15 | — | High | Fair |
| Trout Lake Monroe County | 24 | 1900 | High | Poor |
| Trout Run Westmoreland County | 41 | 1927 | High | Fair |
| Trout Run Berks County | 104 | 1976 | High | Fair |
| Trout Run No 4 Northumberland County | 34 | 1882 | High | Fair |
| Tubmill Westmoreland County | 40 | 1907 | High | Fair |
| Tuscarora Lake Susquehanna County | 12 | 1919 | High | Fair |
| Twin Lakes No 1 Westmoreland County | 31 | 1908 | High | Satisfactory |
| Twin Lakes No 2 Westmoreland County | 34 | 1910 | High | Satisfactory |
| Two Lick Creek Indiana County | 90 | 1968 | High | Satisfactory |
| Two Mile Run Venango County | 85 | 1971 | High | Fair |
| Tyrone Reservoir #2 Blair County | 51 | 1912 | High | Fair |
| Union City Dam Erie County | 88 | 1971 | High | Not Available |
| Union City Reservoir Erie County | 36 | 1935 | High | Poor |
| University Park Airport Pond 1a Centre County | 24 | 1995 | High | Poor |
| Upper Birchwood Lake Pike County | 23 | — | High | Poor |
| Upper Boone Lake Sullivan County | 18 | 1972 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.