Staffordville Reservoir Dam Reservoir Report

Last Updated: December 6, 2025

The Staffordville Reservoir Dam, located in Staffordville, Tolland County, Connecticut, was completed in 1850 and serves as a vital water resource for the area.


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Summary

The dam stands at a height of 30 feet and has a storage capacity of 2600 acre-feet, with a normal storage capacity of 1800 acre-feet. The reservoir covers an area of 186 acres and is fed by Furnace Brook, providing recreational opportunities for the local community.

Despite its historical significance and recreational benefits, the Staffordville Reservoir Dam has been assessed as being in poor condition with a high hazard potential. The dam is classified as a masonry structure, with an uncontrolled spillway type and a spillway width of 125 feet. The dam's last inspection took place in November 2017, with an inspection frequency of every two years. Risk assessments have rated the dam's risk level as moderate, highlighting the need for ongoing monitoring and potential management measures to ensure public safety and the integrity of the structure.

With its picturesque location and important role in water resource management, the Staffordville Reservoir Dam represents an essential piece of infrastructure in the region. As climate change impacts continue to influence water resources and infrastructure resilience, it is crucial for stakeholders to prioritize the maintenance and monitoring of dams like Staffordville to mitigate risks and safeguard the surrounding community and environment.

Year Completed

1850

Dam Length

525

Dam Height

30

River Or Stream

FURNACE BROOK

Primary Dam Type

Masonry

Surface Area

186

Drainage Area

8.44

Nid Storage

2600

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

30
       
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.