Located in Ossipee, New Hampshire, the Dan Hole River Dam, also known as Mill Pond Dam, is a concrete buttress structure completed in 1935 for the primary purpose of recreation.
Wind
Humidity
With a height of 29 feet and a length of 140 feet, this dam impounds the Dan Hole River, creating a reservoir with a storage capacity of 68 acre-feet and a surface area of 6 acres. Despite its age, the dam is still actively regulated, permitted, inspected, and enforced by the New Hampshire Department of Environmental Services Dam Bureau, ensuring its safety and compliance with state regulations.
The dam's hazard potential is classified as significant, with a poor condition assessment as of October 2014. Its emergency action plan (EAP) status is currently unspecified, with the last revision in February 2020. The risk assessment for the dam is moderate (3), indicating a level of risk that requires attention and management. Overall, the Dan Hole River Dam serves as a vital infrastructure for recreation and water resource management in the area, highlighting the importance of ongoing maintenance and risk mitigation efforts to ensure its continued safety and functionality for the community and the environment.
Year Completed |
1935 |
Dam Length |
140 |
Dam Height |
29 |
River Or Stream |
DAN HOLE RIVER |
Primary Dam Type |
Concrete |
Surface Area |
6 |
Drainage Area |
11.89 |
Nid Storage |
68 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
29 |
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|
220cfs |
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315cfs |
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|
1020cfs |
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|
3940cfs |
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|
351cfs |
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123cfs |