SNOFLO
 



NORTH HARTLAND DAM

RESERVOIR LEVELS
Rock, Soil Dam Ottauquechee River
April 24, 2025


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Located in Hartland, Vermont, the North Hartland Dam, also known as North Hartland Lake, is a crucial structure operated by the US Army Corps of Engineers for flood risk reduction, hydroelectric power generation, and recreation purposes. Completed in 1961, this rockfill dam stands at a height of 182 feet and spans 1,640 feet, with a storage capacity of 94,600 acre-feet. The dam's spillway, with a width of 465 feet, can release a maximum discharge of 160,900 cubic feet per second, reducing the risk of flooding for surrounding communities along the Ottauquechee River.

Despite being classified as having a moderate risk level, the North Hartland Dam plays a vital role in mitigating flood threats to towns like Hartland, White River Junction, and Windsor, Vermont, as well as West Lebanon, New Hampshire. While the likelihood of dam failure is extremely low, potential scenarios include uncontrolled high-volume water releases during significant storm events or breaches resulting in downstream flooding. To manage these risks, the USACE conducts regular inspections, maintains the dam's condition, and collaborates with local emergency managers to update emergency action plans and ensure public awareness and readiness for any potential dam-related emergencies.

In the event of a catastrophic failure, the downstream floodwaters could be devastating, impacting communities along the river with swift and deep flooding, risking property damage and loss of life. USACE's risk management measures focus on proactive monitoring and maintenance of the dam, engaging with emergency responders and the public to prepare for emergencies, and updating emergency action plans to mitigate potential risks. Despite the potential risks, the North Hartland Dam remains a critical infrastructure for water resource management and climate resilience in the region.

Year_Completed 1961
Dam_Height 182
River_Or_Stream OTTAUQUECHEE RIVER
Dam_Length 1640
Primary_Dam_Type Rockfill
Surface_Area 215
Hydraulic_Height 177
Drainage_Area 220
Nid_Storage 94600
Structural_Height 182
Hazard_Potential High
Foundations Rock, Soil
Nid_Height 182
       

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