Tacky Reservoir Report

Nearby: Node Dnestr

Last Updated: December 5, 2025

Tacky, located in Loma, Montana, is a private earth dam constructed in 1920 for fire protection, stock, and small fish pond purposes along the East Dugout Coulee.


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Summary

With a dam height of 25 feet and a storage capacity of 64 acre-feet, Tacky serves as a valuable resource in Chouteau County. The dam is under the jurisdiction of the Montana Department of Natural Resources and Conservation (DNRC), ensuring that it is regulated, inspected, and enforced to meet safety standards.

Despite being classified as having a low hazard potential, Tacky's condition assessment is currently labeled as "Not Rated." This underscores the importance of regular inspections and maintenance to ensure the structural integrity and safety of the dam. The dam has not been modified in recent years, and there is no Emergency Action Plan (EAP) in place, indicating a potential area for improvement in terms of emergency preparedness. Additionally, there is a lack of risk assessment and management measures associated with Tacky, highlighting the need for more comprehensive planning and response protocols.

In conclusion, Tacky represents a historic earth dam with significant storage capacity in Montana. As a vital resource for fire protection and agricultural purposes, it is crucial to prioritize its maintenance and safety protocols. By implementing a thorough EAP, conducting regular inspections, and enhancing risk assessment procedures, Tacky can continue to serve the community effectively while mitigating potential hazards and risks associated with its operation.

Year Completed

1920

Dam Length

200

Dam Height

25

River Or Stream

EAST DUGOUT COULEE

Primary Dam Type

Earth

Hydraulic Height

25

Nid Storage

64

Hazard Potential

Low

Nid Height

25
       
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.