SNOFLO
 



HAPGOOD POND DAM

RESERVOIR LEVELS
Flood Brook
April 23, 2025


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Hapgood Pond Dam, located in Londonderry, Vermont, is a federal-owned structure managed by the USDA Forest Service. Built in 1980, the dam serves as a water supply source and is situated on Flood Brook, with a height of 20 feet and a length of 128 feet. With a normal storage capacity of 43 acre-feet and a maximum discharge of 318 cubic feet per second, the dam plays a crucial role in managing water resources in the region.

Although the dam has a low hazard potential and is not currently rated for its condition, it underwent structural modifications in 2000 to ensure its continued safety and functionality. The last inspection of the dam took place in May 2014, with an inspection frequency of 10 years. The risk assessment for Hapgood Pond Dam indicates a moderate risk level (3), prompting the need for ongoing monitoring and potential risk management measures to safeguard both the dam and the surrounding area from potential hazards.

Enthusiasts of water resources and climate change will find Hapgood Pond Dam to be a fascinating case study in dam infrastructure management. With its primary purpose of water supply and its location in a picturesque natural setting, the dam represents a balance between human needs and environmental stewardship. As discussions around climate resilience and water management continue to evolve, Hapgood Pond Dam serves as a tangible example of the intersection between infrastructure, sustainability, and risk management in the face of changing environmental conditions.

Years_Modified 2000 - Structural
Year_Completed 1980
Dam_Height 20
River_Or_Stream FLOOD BROOK
Dam_Length 128
Primary_Dam_Type Other
Surface_Area 8
Hydraulic_Height 14
Drainage_Area 4
Nid_Storage 86
Structural_Height 27
Hazard_Potential Low
Nid_Height 27
       

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