Poole Pond Dam Reservoir Report

Last Updated: December 6, 2025

Poole Pond Dam, located in Windham County, Connecticut, is a privately owned structure built in 1974 for recreational purposes.


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Summary

Managed by the USDA NRCS, this earth dam stands at 18 feet high and spans 800 feet in length, creating a surface area of 44 acres and a maximum storage capacity of 352 acre-feet. The dam is situated on Masonrys Brook in Eastford, Connecticut, and is regulated by the state's Department of Energy and Environmental Protection (DEEP).

Despite being classified as having a significant hazard potential, the condition of Poole Pond Dam has not been rated as of the last inspection in 2014. With an uncontrolled spillway and outlet gates, the dam poses a moderate risk (3 out of 5) according to the available data. While the Emergency Action Plan (EAP) status and risk management measures are not specified, the dam's location in a watershed with a small drainage area of 0.2 square miles suggests the need for continued monitoring and maintenance to ensure the safety of downstream communities and the surrounding environment. Water resource and climate enthusiasts may find Poole Pond Dam to be a site of interest for its recreational value and potential implications for water management in the region.

Year Completed

1974

Dam Length

800

Dam Height

18

River Or Stream

MASONRYS BROOK

Primary Dam Type

Earth

Surface Area

44

Drainage Area

0.2

Nid Storage

352

Outlet Gates

Uncontrolled

Hazard Potential

Significant

Foundations

Soil

Nid Height

18
       
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.