Hattertown Pond Dam Reservoir Report

Last Updated: December 5, 2025

Hattertown Pond Dam, located in Huntington, Connecticut, was completed in 1840 and serves primarily for recreational purposes.


°F

°F

mph

Wind

%

Humidity

Summary

The earth dam stands at a height of 11 feet and has a length of 95 feet, creating a storage capacity of 90 acre-feet. Situated on the Lewis Brook, the dam covers an area of 18 acres and has a drainage area of 1.38 square miles. Despite being privately owned, the dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP) and undergoes regular inspections to ensure its safety.

With a significant hazard potential, Hattertown Pond Dam has not been rated for its condition assessment. The Emergency Action Plan (EAP) for the dam was last revised in 1993, and there is no current information available on its compliance with guidelines or the preparation of inundation maps. The dam has a spillway width of 19 feet and a maximum discharge capacity of 121 cubic feet per second. While the dam does not have any associated locks, it remains a focal point for recreation in the area, offering opportunities for boating and fishing on the pond created by its construction.

As a historic structure with ties to the local community, Hattertown Pond Dam represents a balance between water resource management and recreational enjoyment. Its presence on the Lewis Brook not only provides a scenic backdrop for outdoor activities but also underscores the importance of maintaining and monitoring dam infrastructure for the safety of surrounding areas. The dam's significance lies not only in its functional purpose but also in its role as a landmark that contributes to the cultural and environmental landscape of Fairfield County, Connecticut.

Year Completed

1840

Dam Length

95

Dam Height

11

River Or Stream

LEWIS BROOK

Primary Dam Type

Earth

Surface Area

18

Drainage Area

1.38

Nid Storage

90

Hazard Potential

Significant

Nid Height

11
       
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.