Kuntson #2 Reservoir Report
Nearby: Mr Mito Bars Thibadeau Farm
Last Updated: December 6, 2025
Kuntson #2, also known as Lohman Dam, is a private-owned structure located in CHINOOK, Montana.
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Summary
Built in 1900 by USDA NRCS, this earth dam stands at 20 feet tall and spans 350 feet in length, with a primary purpose of irrigation. Situated on LOHMAN COULEE, the dam has a storage capacity of 82 acre-feet and serves a drainage area of 31.9 square miles. With a low hazard potential and a condition assessment of 'Not Rated', Kuntson #2 is regulated, inspected, and enforced by the Montana Department of Natural Resources and Conservation.
Managed by the Natural Resources Conservation Service, Kuntson #2 is designed to withstand maximum discharge of 500 cubic feet per second, with a spillway width of 114 feet to manage excess water flow. Although the dam's condition assessment is not rated, it meets state permitting and inspection requirements, suggesting a functional and compliant structure. With an emergency action plan (EAP) status unknown and no inundation maps prepared, there may be room for improvement in emergency preparedness and risk management measures for this critical irrigation infrastructure.
Located in Hill County, Montana, Kuntson #2 contributes to agricultural water supply in the region, benefiting local farmers and landowners. As a part of the larger irrigation network in the area, the dam plays a vital role in water resource management and supports the livelihoods of those dependent on consistent and reliable water supply for irrigation purposes. With its historical significance and continued operational importance, Kuntson #2 stands as a testament to the intersection of water resource management, climate resilience, and agricultural sustainability in the region.
Year Completed |
1900 |
Dam Length |
350 |
Dam Height |
20 |
River Or Stream |
LOHMAN COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
31.9 |
Nid Storage |
82 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Kuntson #2