Mccarter North Dam Reservoir Report

Last Updated: December 5, 2025

Mccarter North Dam, located in Toole County, Montana, is a privately owned structure with a primary purpose of irrigation.


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Summary

Completed in 1953, this earth dam stands at a height of 38 feet and has a length of 2180 feet, serving as a crucial water resource for the surrounding area. With a storage capacity of 7000 acre-feet, the dam plays a significant role in managing water supply for agricultural needs in the region.

Situated on Willow Creek, the Mccarter North Dam is regulated by the state of Montana and is subject to regular inspections to ensure its safety and integrity. Although the dam's hazard potential is considered significant, its condition assessment is currently not rated. Despite the last inspection date being in 1980, the dam continues to provide essential water resources to the local community and plays a vital role in sustaining agricultural activities in the area.

While the dam has not been modified in recent years, its strategic location and efficient design make it a valuable asset for water management in Toole County. As climate change continues to impact water resources, structures like the Mccarter North Dam will play a crucial role in ensuring a sustainable water supply for agricultural and other purposes. With its storage capacity, surface area, and drainage area, this dam remains a key feature in the region's water infrastructure.

Year Completed

1953

Dam Length

2180

Dam Height

38

River Or Stream

WILLOW CREEK

Primary Dam Type

Earth

Surface Area

960

Hydraulic Height

38

Drainage Area

463

Nid Storage

7000

Hazard Potential

Significant

Nid Height

38
       
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.