Industrial Monument Dam Reservoir Report

Last Updated: December 6, 2025

The Industrial Monument Dam, located on the Blackberry River in North Canaan, Connecticut, is a state-regulated structure primarily used for recreation.


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Summary

This masonry dam stands at a height of 14 feet and spans a length of 100 feet, with a surface area of 2 acres and a drainage area of 40.6 square miles. Despite its significant hazard potential, the dam's condition was assessed as satisfactory during the last inspection in August 2018.

Owned by the state of Connecticut and regulated by the Department of Energy and Environmental Protection (DEEP), the Industrial Monument Dam serves as a popular spot for outdoor activities in Litchfield County. With its scenic surroundings and historical significance, the dam attracts water resource and climate enthusiasts seeking to explore the beauty of the Blackberry River. As a key recreational site in the region, the dam plays a crucial role in providing opportunities for enjoyment and relaxation for locals and visitors alike.

While the dam's emergency action plan (EAP) status and risk management measures are currently unspecified, the structure's overall condition and safety protocols are maintained at a satisfactory level. With a solid foundation and regular inspections, the Industrial Monument Dam continues to serve as a valuable resource for both the community and the environment, showcasing the harmonious coexistence of human infrastructure and natural landscapes in Connecticut's water system.

Dam Length

100

Dam Height

14

River Or Stream

BLACKBERRY RIVER

Primary Dam Type

Masonry

Surface Area

2

Drainage Area

40.6

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.