Timber Reservoir Report

Last Updated: December 13, 2025

Timber is a privately owned dam located in Glendive, Montana, with a primary purpose of providing fire protection, stock, or small fish pond.


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Summary

Constructed in 1945, this earth dam stands at a height of 20 feet and spans 200 feet in length, with a storage capacity of 68 acre-feet. Situated on the TR-TIMBER FORK SEVENMILECR river or stream, Timber is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular inspections, permitting, and enforcement to ensure its safety and compliance with state regulations.

Despite its low hazard potential, Timber's condition assessment is currently listed as "Not Rated," with no recent inspection or evaluation data available. The dam has not been modified in recent years and does not have an Emergency Action Plan (EAP) in place. While the risk assessment, risk management measures, and inundation maps have not been prepared or updated, it is crucial for stakeholders and authorities to prioritize the monitoring and maintenance of Timber to mitigate any potential risks and ensure the safety of the surrounding community and environment.

As a key infrastructure for fire protection and water resource management in the area, Timber plays a vital role in supporting various activities and serving as a valuable asset for the community. With its historical significance and continued importance, it is essential for all concerned parties to work together in safeguarding and enhancing the resilience of Timber to adapt to changing climate conditions and ensure its long-term sustainability for future generations.

Year Completed

1945

Dam Length

200

Dam Height

20

River Or Stream

TR-TIMBER FORK SEVENMILECR

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

68

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.