Tetrams Pond Dam Reservoir Report

Last Updated: December 5, 2025

Tetrams Pond Dam, located in Killingworth, Connecticut, is a concrete structure built in 1923 primarily for recreation purposes.


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Summary

The dam stands at a height of 15 feet and spans 280 feet in length, creating a reservoir with a storage capacity of 113 acre-feet. Situated on Bunker Hill Brook, the dam serves as a picturesque backdrop for outdoor activities such as fishing and boating, attracting water resource and climate enthusiasts alike.

Managed by a private owner, Tetrams Pond Dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP), ensuring that it meets state inspection and enforcement standards. With a spillway width of 69 feet and a maximum discharge rate of 339 cubic feet per second, the dam has been assessed as having a significant hazard potential but is currently deemed to be in fair condition. Despite its age, Tetrams Pond Dam continues to provide a valuable recreational resource for the community while maintaining a moderate risk profile.

As a part of the New England District, Tetrams Pond Dam is a notable feature in Middlesex County's landscape, overseen by state authorities to ensure public safety and environmental protection. With its historic significance and ongoing recreational use, the dam serves as a reminder of the intersection between water resource management, climate resilience, and community engagement in shaping sustainable environments for future generations.

Year Completed

1923

Dam Length

280

Dam Height

15

River Or Stream

BUNKER HILL BROOK

Primary Dam Type

Concrete

Surface Area

19

Drainage Area

2.58

Nid Storage

113

Hazard Potential

Significant

Nid Height

15
       
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.