Sucker Brook Diversion Reservoir Report

Last Updated: December 17, 2025

Sucker Brook Diversion, located in Lake Dunmore, Vermont, is a hydroelectric dam completed in 1917 with a height of 38 feet and a length of 725 feet.


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Summary

The dam has a storage capacity of 1 acre-foot and a maximum discharge of 4180 cubic feet per second. It is classified as an earth dam and serves as a key water resource infrastructure in the region.

Managed by a public utility, the dam falls under the jurisdiction of the Federal Energy Regulatory Commission (FERC) and is not regulated by the state. With a significant hazard potential and moderate risk assessment, the dam poses challenges in terms of its emergency preparedness and risk management. Despite its age, the condition assessment of Sucker Brook Diversion is currently not available, raising concerns about its long-term structural integrity.

As a vital component of the local water resource and climate landscape, Sucker Brook Diversion continues to play a crucial role in providing hydroelectric power and regulating water flow in the area. With its historical significance and potential risks, ensuring the proper maintenance, inspection, and emergency preparedness of the dam is essential for safeguarding both the environment and the community it serves.

Year Completed

1917

Dam Length

725

Dam Height

38

River Or Stream

Sucker Brook

Primary Dam Type

Earth

Surface Area

1

Drainage Area

10

Nid Storage

1

Hazard Potential

Significant

Nid Height

38
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.