SNOFLO


ANTIETAM

RESERVOIR LEVELS
Unlisted/Unknown Dam East Branch Antietam Creek
May 11, 2025


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Antietam is a vital Earth dam located in Hamiltonban Township, Pennsylvania, serving as a crucial water supply source for the area. Completed in 1953, the dam stands at a height of 70 feet and has a capacity of 866 acre-feet, with a normal storage level of 464 acre-feet. With a surface area of 27 acres and a drainage area of 3.9 square miles, the dam plays a significant role in managing water resources for the region.

Owned and regulated by the Pennsylvania Department of Environmental Protection, Antietam is subject to regular inspections and enforcement to ensure its structural integrity and operational efficiency. Classified with a high hazard potential and assessed to be in fair condition, the dam is monitored closely to mitigate any potential risks and ensure the safety of surrounding communities. Despite its age, Antietam continues to serve its primary purpose of water supply effectively, highlighting the importance of proper maintenance and regulation in safeguarding critical infrastructure in the face of changing climate conditions.

As water resource and climate enthusiasts, understanding the significance of dams like Antietam in managing water supply and mitigating risks is crucial. The dam's location along the East Branch Antietam Creek, in Adams County, Pennsylvania, underscores the interconnectedness of water resources and the environment. With ongoing monitoring and regulatory oversight, Antietam stands as a testament to the importance of sustainable water management practices in the face of evolving climate challenges.

Year_Completed 1953
Dam_Height 70
River_Or_Stream EAST BRANCH ANTIETAM CREEK
Dam_Length 815
Primary_Dam_Type Earth
Surface_Area 27
Drainage_Area 3.9
Nid_Storage 866
Hazard_Potential High
Foundations Unlisted/Unknown
Nid_Height 70
       

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