Indian #4 Reservoir Report

Last Updated: December 5, 2025

Indian #4 is a privately owned earth dam located in Fergus County, Montana, on the TR-Antelope Creek.


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Summary

Built in 1961, this multipurpose structure serves as a reservoir for fire protection, stock watering, and small fish pond purposes. With a dam height of 28 feet and a storage capacity of 54 acre-feet, Indian #4 has a low hazard potential and is regulated by the state agency DNRC. The dam is situated in an area with a rich history of water resource management and climate adaptation efforts.

Despite being a low hazard structure, Indian #4 plays a crucial role in supporting local agricultural activities and wildlife conservation in the region. The dam's location in a Congressional District represented by Greg Gianforte underscores the importance of water resource management and infrastructure maintenance in the area. The dam's condition assessment is currently marked as "Not Rated," suggesting a need for further evaluation and potential upgrades to ensure its long-term functionality and safety.

As a part of the Omaha District, Indian #4 is subject to state inspections, enforcement, and permitting to ensure compliance with regulatory standards. With its proximity to the TR-Antelope Creek and its contribution to local water supply and ecosystem health, Indian #4 stands as a testament to the intricate relationship between water resources, climate resilience, and community well-being in the region.

Year Completed

1961

Dam Length

280

Dam Height

28

River Or Stream

TR-ANTELOPE CREEK

Primary Dam Type

Earth

Hydraulic Height

28

Nid Storage

54

Hazard Potential

Low

Nid Height

28
       
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.