Brady Lakes (Eyraud Lakes) Reservoir Report

Last Updated: December 21, 2025

Brady Lakes, also known as Eyraud Lakes, is a water resource located in Toole, Montana, primarily used for irrigation purposes.


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Summary

This local government-owned structure was completed in 1936 and has a low hazard potential, with a dam height of 20 feet and a storage capacity of 1908 acre-feet. The lakes are regulated by the Montana Department of Natural Resources and Conservation, ensuring that the structure is inspected, enforced, and permitted in accordance with state regulations.

Situated near the Brady Canal in Collins, Montana, Brady Lakes serve as a vital water source for agricultural irrigation in the region. With a normal storage capacity of 977 acre-feet, the lakes play a crucial role in maintaining water supply for local farms and communities. Despite not being rated for condition assessment, the structure remains operational and continues to support the needs of the surrounding area.

Managed by the local government and with no associated federal agencies, Brady Lakes exemplify the importance of sustainable water resource management in the face of changing climate conditions. As enthusiasts of water resources and climate, understanding and supporting the maintenance and regulation of structures like Brady Lakes is essential for ensuring the resilience and longevity of our water systems.

Year Completed

1936

Dam Length

900

Dam Height

20

River Or Stream

BRADY CANAL

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

1908

Hazard Potential

Low

Nid Height

20
       
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.