Arthur Reservoir Report
Nearby: T Hackley #1 C Sowle Reservoir #2
Last Updated: December 13, 2025
Arthur is a privately owned irrigation dam located in Culbertson, Montana, along the TR-South Fork Cherry Creek.
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Summary
Completed in 1930, this earth dam stands at a height of 20 feet and has a storage capacity of 155 acre-feet. The primary purpose of Arthur is to provide water for irrigation in the surrounding area, with a normal storage capacity of 79 acre-feet. Managed by the Montana Department of Natural Resources and Conservation (DNRC), the dam is state regulated and inspected regularly to ensure its safety and compliance with regulatory standards.
With a low hazard potential and a current condition assessment of "Not Rated," Arthur serves as a vital water resource for agricultural activities in Richland County, Montana. Its location in a congressional district represented by Greg Gianforte (R) underscores its importance to the local community and economy. While the dam has not undergone recent modifications or updates, its operational status and maintenance are closely monitored to mitigate any potential risks or hazards that may arise.
Despite its humble size and stature, Arthur plays a crucial role in sustaining the water supply for irrigation purposes in the region. As a key piece of infrastructure in the Omaha District, this dam exemplifies the importance of efficient water management and conservation efforts in the face of changing climate patterns and resource demands. Whether for agricultural production or environmental preservation, Arthur stands as a testament to the essential role of water resources in shaping the landscape and livelihoods of Montana communities.
Year Completed |
1930 |
Dam Length |
500 |
Dam Height |
20 |
River Or Stream |
TR-SOUTH FORK CHERRY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
155 |
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.
Arthur