Ghost #6 Reservoir Report

Last Updated: December 19, 2025

Ghost #6 is a privately owned earth dam located in Nashua, Montana, along the TR-East Fork Snow Coulee river.


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Summary

Completed in 1966, this dam serves a primary purpose of "Other" with a storage capacity of 101 acre-feet and a maximum height of 15 feet. The dam's low hazard potential and "Not Rated" condition assessment indicate a relatively stable structure in terms of safety and integrity.

Managed by the Montana Department of Natural Resources and Conservation (DNRC), Ghost #6 is subject to state regulation, permitting, inspection, and enforcement. Despite its modest size and purpose, this dam plays a crucial role in water resource management and climate resilience in the region. With a normalized storage capacity of 40 acre-feet, Ghost #6 contributes to the local ecosystem and water supply, highlighting the interconnectedness of water resources and climate adaptation efforts.

As part of the broader network of dams and water infrastructure in Montana, Ghost #6 underscores the importance of monitoring and maintaining these structures to ensure their long-term functionality and safety. With its unique location and design, this earth dam stands as a testament to the ongoing efforts to balance water resource management with environmental sustainability and climate resilience in the face of changing weather patterns and hydrological conditions.

Year Completed

1966

Dam Length

600

Dam Height

15

River Or Stream

TR-EAST FORK SNOW COULEE

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

101

Hazard Potential

Low

Nid Height

15
       
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.