Great Stream Commons Lower is a privately owned earth dam located in Union County, Pennsylvania, specifically in Gregg Township.
Wind
Humidity
Built in 2001 for flood risk reduction along the TR Susquehanna River, this dam stands at 24 feet tall and spans 700 feet in length. It has a storage capacity of 78.7 acre-feet, with a normal storage level of 14.3 acre-feet, covering a surface area of 1.6 acres and draining a 0.4 square mile watershed.
Managed by the Pennsylvania Department of Environmental Protection, this dam is regulated, inspected, and enforced by state authorities to ensure its structural integrity and safety. With a low hazard potential and a condition assessment of "Not Rated," the dam undergoes inspections every five years, with the last inspection conducted in July 2019. While emergency action plans and risk assessments are not currently available, the dam serves as an essential infrastructure for mitigating flood risks in the region, contributing to the overall water resource management and climate resilience efforts in the area.
Year Completed |
2001 |
Dam Length |
700 |
Dam Height |
24 |
River Or Stream |
TR SUSQUEHANNA RIVER |
Primary Dam Type |
Earth |
Surface Area |
1.6 |
Drainage Area |
0.4 |
Nid Storage |
78.7 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
| Location | Reservations | Toilets |
|---|---|---|
Bald Eagle #4
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Bald Eagle #5
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Steel Steeds Motorcycle Campground
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