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 226–250 of 378
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Jeffers Pond Susquehanna County | 13 | 1919 | Low | Satisfactory |
| Jeddo Coal CO - Jeddo #8 Prep Plant Luzerne County | 20 | — | Low | Not Available |
| Janesville Clearfield County | 12 | — | Low | Not Rated |
| Isers Run Reservoir Somerset County | 20 | 1982 | Low | Not Rated |
| Irrigation Pond Adams County | 26 | 1989 | Low | Not Rated |
| Industrial Wastes, INC South Pond Beaver County | 28 | 1990 | Low | Satisfactory |
| Illicks Mill Northampton County | 15 | 1850 | Low | Fair |
| Hutchinson Fresh Water Westmoreland County | 65 | — | Low | Not Rated |
| Hutchinson Huntingdon County | 20 | 1959 | Low | Not Rated |
| Hulmeville Park Bucks County | 12 | 1800 | Low | Fair |
| Howell Pond Wayne County | 12 | — | Low | Fair |
| Hort Farm Pond- Psu Centre County | 30 | 1966 | Low | Not Available |
| Homer City Sed/Surge Pond Indiana County | 25 | 1993 | Low | Not Rated |
| Holtwood Lancaster County | 55 | 1910 | Low | Satisfactory |
| Holly Susquehanna County | 25 | 1988 | Low | Fair |
| Hockenberry Run Clearfield County | 25 | 1980 | Low | Not Rated |
| Hobo Ventures Washington County | 118 | — | Low | Fair |
| Hirsch Pike County | 16 | 1958 | Low | Satisfactory |
| Hidden Valley Butler County | 27 | 1974 | Low | Not Available |
| Hetzell Pond Wayne County | 8 | — | Low | Fair |
| Hensingersville Lehigh County | 18 | 1936 | Low | Fair |
| Helvetia Clearfield County | 15 | 1921 | Low | Not Rated |
| Heishmans Mill Cumberland County | 10 | 1815 | Low | Not Rated |
| Hartwig Wayne County | 17 | 1988 | Low | Satisfactory |
| Hartstown No 15 Crawford County | 10 | 1989 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.