Hunnes #1 Reservoir Report

Last Updated: December 8, 2025

Hunnes #1 is a privately owned earth dam located in Forsyth, Montana, with a primary purpose of providing fire protection, stock watering, and a small fish pond.


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Summary

Completed in 1929, this dam stands at a height of 20 feet and has a storage capacity of 219 acre-feet. Situated on the TR-Great Porcupine Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) with regular inspections and enforcement measures in place to ensure its safety and functionality.

With a low hazard potential and a current condition assessment of "Not Rated," Hunnes #1 serves as a crucial water resource for the surrounding area. Despite lacking detailed information on its spillway type or drainage area, this dam continues to provide valuable services to the community. As a significant feature in the local landscape, Hunnes #1 stands as a testament to the intersection of water resource management and climate resilience in Montana.

As water resource and climate enthusiasts, the data on Hunnes #1 offers a glimpse into the intricate network of dams and reservoirs that play a vital role in sustaining ecosystems and human activities in the region. With its historical significance and ongoing regulatory oversight, this structure exemplifies the importance of balancing water management needs with environmental protection and community safety. As we continue to navigate the challenges of a changing climate, Hunnes #1 stands as a reminder of the critical role that water infrastructure plays in shaping our relationship with the natural world.

Year Completed

1929

Dam Length

125

Dam Height

20

River Or Stream

TR-GREAT PORCUPINE CR

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

219

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.