Allison Reservoir Report
Nearby: Kolstad #3 Tomeyer #2
Last Updated: December 20, 2025
Allison, a privately owned irrigation dam located in Cut Bank, Montana, was completed in 1964 and stands at a height of 12 feet with a length of 240 feet.
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Summary
Managed by the Montana Department of Natural Resources and Conservation, this earth dam serves the primary purpose of irrigation, storing a maximum of 91 acre-feet of water. Situated on diffused surface water, Allison poses a low hazard potential and has not been rated for its condition. Despite being located in a remote area in Toole County, Montana, Allison plays a crucial role in supporting local agriculture through its water storage capabilities.
While Allison has not been subject to recent inspections or condition assessments, it remains under state jurisdiction and regulation, ensuring that it meets safety standards for its intended purpose. With a design focused on irrigation, Allison contributes to the sustainable management of water resources in the region, highlighting the importance of dams in supporting agricultural activities in arid environments. As a part of the broader water infrastructure network in Montana, Allison showcases the collaboration between private owners and state agencies in maintaining critical water sources for the community.
As climate change continues to impact water availability and distribution, structures like Allison play a vital role in securing water resources for agriculture and other essential needs. By ensuring the proper management and maintenance of dams like Allison, stakeholders can adapt to changing climate conditions and mitigate the potential risks associated with water scarcity. As water resource and climate enthusiasts, understanding the infrastructure and regulations surrounding dams like Allison is crucial for promoting sustainable water management practices in a changing world.
Year Completed |
1964 |
Dam Length |
240 |
Dam Height |
12 |
River Or Stream |
DIFFUSED SURFACE WATER |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
91 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Allison