Upper Buffalo No.39, also known as Llwellyn Run Dam, is a local government-owned structure in Mannington, West Virginia.
Wind
Humidity
Built in 1969 by the USDA NRCS, this earth dam stands at a height of 58 feet and serves the primary purpose of flood risk reduction along the Llewellyn Run river stream. With a storage capacity of 616 acre-feet, the dam covers a surface area of 7 acres and has a drainage area of 1.26 square miles.
This dam is regulated by the West Virginia Department of Environmental Protection and undergoes regular inspections to ensure its satisfactory condition. With a hazard potential rated as high, the dam's risk assessment is moderate. Although the dam has uncontrolled spillways and outlet gates, it has been deemed to meet safety guidelines. While no associated structures are present, the dam's emergency action plan has been prepared and last revised in 2017, ensuring that proper risk management measures are in place to protect the surrounding area from potential flooding events.
Overall, Upper Buffalo No.39 plays a crucial role in mitigating flood risks in the region and highlights the importance of effective water resource management and climate adaptation strategies. As a key infrastructure for the community, the dam's ongoing monitoring and maintenance efforts demonstrate a commitment to safeguarding the environment and ensuring the safety of residents in the event of emergencies.
Year Completed |
1969 |
Dam Length |
380 |
Dam Height |
58 |
River Or Stream |
LLEWELLYN RUN |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
57 |
Drainage Area |
1.26 |
Nid Storage |
616 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
58 |
Buffalo Creek At Barrackville
|
25cfs |
West Fork River At Enterprise
|
398cfs |
Tygart Valley River At Colfax
|
1380cfs |
Deckers Creek At Morgantown
|
43cfs |
West Fork River Near Mount Clare
|
271cfs |
Dunkard Creek At Shannopin
|
57cfs |