Knapp Brook Site No. 2 Reservoir Report

Last Updated: December 15, 2025

Knapp Brook Site No.


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Summary

2, also known as Knapp Pond Site No. 2, is a state-owned recreation area located in Cavendish, Vermont. The dam, completed in 1961 by designer Haley & Ward, stands at a height of 22 feet and is primarily used for recreational purposes. The dam's primary purpose is to provide a surface area of 35 acres for activities such as fishing, boating, and wildlife observation.

This significant earth dam on Knapp Brook has a storage capacity of 623 acre-feet and serves as a vital water resource for the surrounding area. With a fair condition assessment as of August 2019, the dam is regularly inspected by the Vermont Department of Environmental Conservation (DEC) to ensure its structural integrity and compliance with state regulations. It is considered to have a significant hazard potential due to its location and the population at risk downstream in the event of a breach.

Despite its proximity to residential areas, Knapp Brook Site No. 2 provides a peaceful retreat for outdoor enthusiasts and serves as an important water resource for the community. With its picturesque setting and recreational opportunities, this dam on Knapp Brook is a valuable asset for both water resource and climate enthusiasts in Windsor County, Vermont.

Year Completed

1961

Dam Length

540

Dam Height

22

River Or Stream

KNAPP BROOK

Primary Dam Type

Earth

Surface Area

35

Hydraulic Height

22

Drainage Area

2.92

Nid Storage

623

Structural Height

27

Hazard Potential

Significant

Foundations

Soil

Nid Height

27
       
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.