Smith Pond Dam Reservoir Report

Last Updated: December 5, 2025

Smith Pond Dam, located in Killingly, Connecticut, is a private dam with a primary purpose of recreation.


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Summary

Built in 1900, this earth dam stands at a height of 14 feet and spans 250 feet in length, providing a storage capacity of 58 acre-feet. The dam sits on Quaduck Brook and has a surface area of 8.3 acres, with a drainage area of 1.79 square miles.

This dam is state-regulated by the Connecticut Department of Energy and Environmental Protection (DEEP), with state permitting, inspection, and enforcement in place. Despite not being rated for its condition assessment, the hazard potential of Smith Pond Dam is considered significant. The last inspection date was in 1991, with an inspection frequency of every 7 years. As a water resource and climate enthusiast, the unique characteristics of Smith Pond Dam make it an intriguing site for further exploration and study.

With its historical significance dating back over a century, Smith Pond Dam serves as a vital water resource for the community and offers recreational opportunities for visitors. While its condition assessment may be pending, the dam's role in managing water flow and providing storage capacity is crucial in the overall management of Quaduck Brook. As efforts continue to ensure the safety and integrity of this significant structure, Smith Pond Dam remains an important focal point for water resource and climate enthusiasts seeking to understand the intersection of infrastructure and environmental stewardship.

Year Completed

1900

Dam Length

250

Dam Height

14

River Or Stream

QUADUCK BROOK

Primary Dam Type

Earth

Surface Area

8.3

Drainage Area

1.79

Nid Storage

58

Hazard Potential

Significant

Nid Height

14
       
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.