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 126–150 of 415
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Griffin (Pa-455) Tioga County | 37 | 1963 | High | Satisfactory |
| Griffis Susquehanna County | 17 | 1989 | Significant | Satisfactory |
| Hamilton Street Lehigh County | 14 | 1983 | Low | Satisfactory |
| Hanger Service Road Det Basin Allegheny County | 28 | 1992 | Low | Satisfactory |
| Harkins Pond Luzerne County | 12 | — | High | Satisfactory |
| Harmar Refuse Bank Allegheny County | 410 | 1957 | High | Satisfactory |
| Harmar Storage Pond No 4 Allegheny County | 39 | 1980 | Low | Satisfactory |
| Harmon Creek (Pa-484) Washington County | 67 | 1971 | High | Satisfactory |
| Hart Perry County | 22 | 1978 | Low | Satisfactory |
| Hart Susquehanna County | 19 | — | Significant | Satisfactory |
| Hartwig Wayne County | 17 | 1988 | Low | Satisfactory |
| Hatfield Ferry Sedimentation Pond Greene County | 25 | — | Significant | Satisfactory |
| H B Norton Elk County | 37 | 1932 | High | Satisfactory |
| Hemlock Lake Indiana County | 43 | 1970 | High | Satisfactory |
| Heritage Reservation Fayette County | 66 | 1979 | High | Satisfactory |
| Herr Foods Storage Lagoon Chester County | 15 | 1996 | High | Satisfactory |
| Hidden Lake Wayne County | 17 | 1966 | High | Satisfactory |
| High Point Lake Somerset County | 45 | 1965 | High | Satisfactory |
| Hills Creek Tioga County | 32 | 1951 | High | Satisfactory |
| Hirsch Pike County | 16 | 1958 | Low | Satisfactory |
| Hollidaysburg Muleshoe Reservoir Blair County | 66 | 1957 | High | Satisfactory |
| Holtwood Lancaster County | 55 | 1910 | Low | Satisfactory |
| Horne No 5 Slurry Washington County | 146 | 1984 | High | Satisfactory |
| House Pond Wayne County | 14 | 1925 | High | Satisfactory |
| Howells Run Cambria County | 64 | 1964 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.