Killingly Pond Dike Reservoir Report

Last Updated: December 5, 2025

Killingly Pond Dike, located in Windham, Connecticut, is a state-regulated structure with a significant hazard potential.


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Summary

This earth dam, standing at 12 feet in height and spanning 700 feet in length, serves a primary purpose that falls under the "Other" category. While specific details on its construction year and storage capacity are not available, the dam is under the jurisdiction of the Connecticut Department of Energy and Environmental Protection (DEEP) and undergoes regular state inspections, permitting, and enforcement to ensure its safety and compliance with regulations.

Despite not being rated for its condition, Killingly Pond Dike is associated with one other structure and falls within the New England District of the US Army Corps of Engineers. The dam's emergency action plan status, risk assessment, and management measures are currently unspecified, highlighting potential areas for further investigation and improvement. With its location in the town of Killingly and close proximity to water resources, this dam plays a crucial role in mitigating flood risks and water management in the region, making it a subject of interest for water resource and climate enthusiasts seeking to understand and enhance the resilience of such vital infrastructure.

Dam Length

700

Dam Height

12

Primary Dam Type

Earth

Hazard Potential

Significant

Nid Height

12
       
Seasonal Comparison

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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.