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 951–975 of 1,481
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Hosensock (Pa-424) Schuylkill County | 35 | 1960 | High | Fair |
| Hosensack No 4 Lehigh County | 32 | 1885 | Significant | Fair |
| Horton Lake Susquehanna County | 10 | 1956 | High | Fair |
| Hort Farm Pond- Psu Centre County | 30 | 1966 | Low | Not Available |
| Horsham Towne Upper Pond Montgomery County | 17 | — | Significant | Fair |
| Horsham Towne Lower Pond Montgomery County | 16 | 1988 | Significant | Fair |
| Horne No 5 Slurry Washington County | 146 | 1984 | High | Satisfactory |
| Hopewell Berks County | 29 | 1937 | High | Fair |
| Homewood Beaver County | 28 | 1852 | Significant | Fair |
| Homer Gap No 2 Blair County | 29 | 1913 | High | Fair |
| Homer City Sed/Surge Pond Indiana County | 25 | 1993 | Low | Not Rated |
| Holtwood Ses Ash Basin No 2 Lancaster County | 57 | 2000 | High | Fair |
| Holtwood Lancaster County | 55 | 1910 | Low | Satisfactory |
| Holly Susquehanna County | 25 | 1988 | Low | Fair |
| Hollidaysburg Muleshoe Reservoir Blair County | 66 | 1957 | High | Satisfactory |
| Hockenberry Run Clearfield County | 25 | 1980 | Low | Not Rated |
| Hobo Ventures Washington County | 118 | — | Low | Fair |
| Hirsch Pike County | 16 | 1958 | Low | Satisfactory |
| Hinckston Cambria County | 84 | 1905 | High | Poor |
| Hilltown (Pa-625) Bucks County | 42 | 1980 | High | Fair |
| Hills Creek Tioga County | 32 | 1951 | High | Satisfactory |
| Hilloch Delaware County | 20 | 1951 | Significant | Fair |
| High Point Lake Somerset County | 45 | 1965 | High | Satisfactory |
| Highlands Farm Adams County | 28 | 1966 | Significant | Fair |
| Hidden Valley Pond No 2 Somerset County | 14 | 1987 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.