Beley Pond Reservoir Report

Last Updated: December 5, 2025

Beley Pond, located in Sweet Grass, Montana, is a privately owned earth dam constructed in 1940 for irrigation purposes along the Fyfe Coulee river.


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Summary

With a dam height of 14 feet and a storage capacity of 70 acre-feet, this low-hazard structure plays a crucial role in managing water resources in the area. Despite its age, Beley Pond remains in good condition and is regularly inspected by the state regulatory agency DNRC to ensure its safety and functionality.

Situated in a picturesque setting just 2 miles from Big Timber, Beley Pond offers a tranquil oasis for both wildlife and visitors alike. Its surface area of 10 acres provides ample space for recreational activities such as fishing, birdwatching, and picnicking. The pond's location within Congressional District 00, Montana, under the representation of Greg Gianforte, underscores its significance as a vital water resource within the region.

As climate change continues to impact water availability and management, Beley Pond serves as a noteworthy example of sustainable water usage for irrigation in Montana. With its low hazard potential and well-maintained condition, this historic earth dam stands as a testament to the importance of responsible water resource management in the face of evolving environmental challenges.

Year Completed

1940

Dam Length

275

Dam Height

14

River Or Stream

FYFE COULEE

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

12

Nid Storage

70

Hazard Potential

Low

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.
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Area Campgrounds