Leo #2 Reservoir Report

Last Updated: December 5, 2025

Leo #2 is a privately owned earth dam located in Fallon, Montana, near the city of Hoyt.


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Summary

Built in 1954, this structure serves multiple purposes including fire protection, stock, and small fish pond. The dam stands at 20 feet in height and has a storage capacity of 92 acre-feet, making it a vital water resource in the area. Situated on TR-Cabin Creek, Leo #2 is regulated by the Montana Department of Natural Resources and Conservation, ensuring proper permitting, inspection, and enforcement measures are in place.

Despite its low hazard potential, Leo #2 plays a crucial role in water management and conservation efforts in the region. The dam's condition is currently not rated, but its functionality and purpose are clear - to provide essential water resources for fire protection, livestock, and wildlife. As an important part of the local ecosystem, Leo #2 highlights the importance of sustainable water management practices for both human and environmental well-being. Whether for firefighting purposes or supporting aquatic life, this dam stands as a testament to the importance of responsible water resource utilization in the face of climate change challenges.

Year Completed

1954

Dam Length

200

Dam Height

20

River Or Stream

TR-CABIN CREEK

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

92

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.