Seymour Lake Reservoir Report

Last Updated: December 7, 2025

Seymour Lake is a picturesque body of water located in Charleston, Vermont, nestled within the Orleans County.


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Summary

This private lake is primarily used for hydroelectric purposes, with a multi-arch dam structure that was completed in 1928. The dam stands at 12 feet tall and has a hydraulic height of 7 feet, providing a storage capacity of 5200 acre-feet and a surface area of 1777 acres. While the dam's hazard potential is classified as low, its condition assessment has not been rated, indicating a need for further evaluation.

The Clyde River-TR flows through Seymour Lake, contributing to its drainage area of 20.19 square miles. Despite being under state jurisdiction, the lake is not regulated, permitted, inspected, or enforced by any state agency. This lack of oversight raises questions about the lake's management and safety measures, as there is no information available on emergency action plans, risk assessments, or inundation maps. Given its historical significance as a hydroelectric resource, it is crucial for Seymour Lake to undergo thorough evaluations to ensure its sustainability and resilience in the face of climate change.

As a hub for water resource and climate enthusiasts, Seymour Lake presents a unique opportunity to study the intersection of hydroelectric power generation and environmental conservation. With its serene surroundings and vital role in the local ecosystem, this lake serves as a captivating subject for further research on sustainable water management practices and the impact of climate change on freshwater resources. By addressing the gaps in its regulatory framework and conducting comprehensive assessments, Seymour Lake can continue to thrive as a valuable asset for both energy production and environmental preservation.

Year Completed

1928

Dam Length

75

Dam Height

12

River Or Stream

CLYDE RIVER-TR

Surface Area

1777

Hydraulic Height

7

Drainage Area

20.19

Nid Storage

5200

Structural Height

12

Hazard Potential

Low

Foundations

Soil

Nid Height

12
       
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.