Tetreault Reservoir Report

Last Updated: January 8, 2026

Tetreault is a state-regulated Earth dam located in Addison, Vermont, specifically on the EAST BRANCH DEAD CREEK-TR river or stream.


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Summary

Built in 1957 by the designers Haley & Ward, this dam serves as a Fish and Wildlife Pond with a storage capacity of 100 acre-feet. The dam stands at a height of 17 feet and has a length of 215 feet, with a surface area of 9 acres and a drainage area of 1.2 square miles.

Even though Tetreault has a low hazard potential and is not currently rated for its condition, it is subject to regular state inspections, permitting, and enforcement by the Vermont Department of Environmental Conservation. The dam's last inspection was conducted in May 2004, with a frequency of every 10 years. While there is no Emergency Action Plan (EAP) in place, there are no associated locks, spillways, or outlet gates present, indicating a simpler structure in terms of hydraulic components.

For water resource and climate enthusiasts, Tetreault presents an interesting case study in dam infrastructure, highlighting the importance of state regulation and inspection in ensuring the safety and functionality of water retention structures. The dam's primary purpose of supporting fish and wildlife populations underscores the critical role that such structures play in ecological conservation efforts. With its location in a scenic area of Vermont and its relatively low risk profile, Tetreault serves as a reminder of the balance between harnessing water resources for human and environmental benefit while mitigating potential hazards.

Year Completed

1957

Dam Length

215

Dam Height

17

River Or Stream

EAST BRANCH DEAD CREEK-TR

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

17

Drainage Area

1.2

Nid Storage

100

Structural Height

23

Hazard Potential

Low

Foundations

Soil

Nid Height

23
       
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.