Kolstad #3 Reservoir Report

Last Updated: December 20, 2025

Kolstad #3 is a privately owned dam located in Galata, Montana, primarily used for irrigation purposes.


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Summary

The earth dam, completed in 1964, stands at a height of 15 feet and has a storage capacity of 50 acre-feet. Situated on diffused surface water, the dam has a low hazard potential and is regulated by the Montana Department of Natural Resources and Conservation. Despite being ungraded in terms of condition assessment, the dam is inspected, permitted, and enforced by the state regulatory agency.

The dam spans 810 feet in length and has a maximum discharge capacity of 20 cubic feet per second. Despite lacking information on spillway type and construction details, Kolstad #3 is designed to serve the agricultural needs of the area. The dam's location within Toole County, Montana, underlines its importance in providing water resources for irrigation in the region. Water resource and climate enthusiasts can appreciate the role of Kolstad #3 in sustaining agricultural activities and managing water distribution in the area.

Year Completed

1964

Dam Length

810

Dam Height

15

River Or Stream

DIFFUSED SURFACE WATER

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

50

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.