Bulls Bridge Canal Spillway Reservoir Report

Last Updated: December 5, 2025

The Bulls Bridge Canal Spillway, located in Gaylordsville, Connecticut, is a remarkable structure with a primary purpose of hydroelectric power generation.


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Summary

Built in 1902, this gravity dam stands at a height of 18.5 feet and has a spillway width of 130 feet, allowing for a maximum discharge of 12,500 cubic feet per second. The spillway is classified as uncontrolled, adding to the allure of this historic site on the Housatonic River.

With a low hazard potential and a moderate risk assessment, the Bulls Bridge Canal Spillway is a testament to early engineering ingenuity and remains in good condition. Managed by the Federal Energy Regulatory Commission, this hydroelectric facility also serves recreational purposes, offering a picturesque setting for water resource and climate enthusiasts to explore. With a storage capacity of 400 acre-feet and a drainage area of 784 square miles, the spillway continues to play a vital role in the region's water management and energy production efforts.

As a key component of the water infrastructure in Litchfield County, the Bulls Bridge Canal Spillway stands as a symbol of sustainable hydroelectric power generation and recreational enjoyment. With a rich history dating back over a century, this gravity dam continues to be a focal point for those interested in the intersection of water resources, climate resilience, and renewable energy technologies.

Year Completed

1902

Dam Length

165

Dam Height

18.5

River Or Stream

Housatonic River

Primary Dam Type

Gravity

Surface Area

120

Drainage Area

784

Nid Storage

400

Hazard Potential

Low

Nid Height

19
       
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.