Murray Reservoir Report
Nearby: Fink Reservoir Umstead Reservoir
Last Updated: December 5, 2025
Murray is a privately owned dam located in Fergus County, Montana, along the TR-ARMELLS CREEK.
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Summary
Built in 1940 by the USDA NRCS, Murray serves multiple purposes including fire protection, stock watering, and small fish pond management. With a dam height of 30 feet and a length of 132 feet, Murray has a storage capacity of 53 acre-feet, with a normal storage level of 34 acre-feet. The dam is classified as an earth dam and is regulated by the Montana Department of Natural Resources and Conservation (DNRC).
Despite being rated as low hazard potential and not having a formal condition assessment, Murray is subject to state inspection, enforcement, and permitting to ensure its safety and compliance with regulations. The dam does not have an Emergency Action Plan (EAP) in place or revised dates for key emergency preparedness measures. Murray, with its primary purpose of serving local water needs and fire protection, contributes to the overall water resource management in the area. As a key structure in the region, Murray plays a vital role in supporting agricultural activities and enhancing water availability for various uses in the surrounding community.
Year Completed |
1940 |
Dam Length |
132 |
Dam Height |
30 |
River Or Stream |
TR-ARMELLS CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
53 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River Near Landusky Mt
|
9100cfs |
Judith River Nr Mouth
|
368cfs |
Peoples Creek Near Hays Mt
|
4cfs |
Musselshell River At Mosby Mt
|
12cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
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.
Murray