Miller Pond Dam Reservoir Report

Last Updated: December 5, 2025

Miller Pond Dam, located in Durham, Connecticut, is a state-owned structure built in 1880 primarily for recreational purposes.


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Summary

The dam, made of concrete, stands at a height of 10 feet and spans a length of 185 feet, with a storage capacity of 256 acre-feet. Situated on Summer Brook, the dam's normal storage covers a surface area of 32.1 acres within a drainage area of 0.4 square miles.

Despite its age, Miller Pond Dam is in fair condition as of the last assessment in May 2015, with a significant hazard potential due to its location and structural characteristics. The dam has been inspected every 5 years, with the last inspection conducted in 2015. The Emergency Action Plan (EAP) for the dam was last revised in December 2017, ensuring preparedness in case of any unforeseen events. With its historical significance and recreational value, Miller Pond Dam serves as a vital water resource for the community while also posing challenges in terms of maintenance and safety regulations.

Year Completed

1880

Dam Length

185

Dam Height

10

River Or Stream

SUMMER BROOK

Primary Dam Type

Concrete

Surface Area

32.1

Drainage Area

0.4

Nid Storage

256

Hazard Potential

Significant

Nid Height

10
       
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.