Wildlife Marsh #2 Dam Reservoir Report

Last Updated: December 6, 2025

Wildlife Marsh #2 Dam, located in Chaplin, Connecticut, was completed in 1974 with a primary purpose of serving as a Fish and Wildlife Pond.


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Summary

This earth dam, standing at a height of 9.2 feet and spanning 225 feet in length, holds a storage capacity of 100 acre-feet and covers a surface area of 18.2 acres. Situated on the E Br Masonryhouse Brook, the dam is regulated and inspected by the Connecticut Department of Energy and Environmental Protection (DEEP), ensuring its structural integrity and safety.

Managed by the Natural Resources Conservation Service, Wildlife Marsh #2 Dam has an uncontrolled spillway 50 feet wide, with a maximum discharge capacity of 203 cubic feet per second. Despite being rated as having a significant hazard potential, the dam's condition assessment is currently listed as 'Not Rated'. The risk assessment for the dam is moderate, with a risk level of 3, highlighting the need for ongoing monitoring and potential risk management measures. As a vital component in supporting local wildlife and water resources, the dam plays a crucial role in maintaining the ecological balance in the area.

Year Completed

1974

Dam Length

225

Dam Height

9.2

River Or Stream

E BR MASONRYHOUSE BK

Primary Dam Type

Earth

Surface Area

18.2

Drainage Area

1.48

Nid Storage

100

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Soil

Nid Height

9
       
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.
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