Hollar Reservoir Report

Last Updated: December 8, 2025

Hollar is a private water resource located in Savage, Montana, with a primary purpose of providing fire protection, stock, and a small fish pond.


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Summary

This earth dam, completed in 1949, stands at a height of 30 feet and has a storage capacity of 44 acre-feet. Despite its low hazard potential, the dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring that it meets state permitting, inspection, and enforcement standards.

Situated on TR-C S Creek in Wibaux County, Hollar serves as a vital resource for the local community and wildlife. With a normal storage capacity of 13 acre-feet and a maximum storage of 44 acre-feet, the dam plays a crucial role in maintaining water levels for various purposes. While the condition assessment is currently not rated, the DNRC oversees the dam's operations, ensuring its safety and functionality for fire protection, livestock, and recreational activities.

The location of Hollar, along with its historical significance and purpose, highlights the importance of sustainable water resource management in the face of changing climate conditions. As water enthusiasts and climate advocates continue to monitor and assess the impact of dams like Hollar on local ecosystems and communities, collaboration with regulatory agencies and stakeholders will be essential to ensure the long-term resilience and effectiveness of these water infrastructures.

Year Completed

1949

Dam Length

600

Dam Height

30

River Or Stream

TR-C S CREEK

Primary Dam Type

Earth

Hydraulic Height

30

Nid Storage

44

Hazard Potential

Low

Nid Height

30
       
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.