4Total Dams
1High Hazard
2Significant
Dam Safety in Union County, Pennsylvania
Union County has 4 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 2 carry a significant hazard classification.
The average dam in Union County is 39 years old. The most common purpose is water supply. The tallest dam is Spruce Run Reservoir at 46 ft.
Explore more: Oldest dams in Pennsylvania · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Spruce Run Reservoir | High | Fair | 46 | Water Supply | 1957 |
| Stony Run | Significant | Not assessed | 39 | Water Supply | |
| Great Stream Commons Upper | Significant | Not assessed | 17 | Flood Risk Reduction | 2001 |
| Great Stream Commons Lower | Low | Not assessed | 24 | Flood Risk Reduction | 2001 |