Deus Nachina Reservoir Report
Nearby: Sibra Cowan Reservoir
Last Updated: December 5, 2025
Deus Nachina, a private water resource in Chouteau, Montana, serves multiple purposes including fire protection, stock, and small fish pond.
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Summary
This Earth-type dam stands at a height of 20 feet and has a length of 450 feet, completed in 1950. With a storage capacity of 62 acre-feet and a normal storage of 32 acre-feet, Deus Nachina plays a crucial role in ensuring water availability for various uses in the area.
Located on Big Sand Creek in BOX ELDER, Montana, Deus Nachina is regulated by the DNRC and falls under the jurisdiction of the state. With a low hazard potential and a current condition assessment of "Not Rated," this dam provides essential water management functions while maintaining safety standards. Despite not being rated for condition assessment, Deus Nachina continues to play a vital role in water resource management, especially for fire protection and agricultural needs in the region.
As a key infrastructure in the area, Deus Nachina contributes to the overall water resource management efforts in Montana. With a focus on safety and efficiency, this dam ensures the availability of water for various purposes while adhering to state regulations and inspection requirements. For water resource and climate enthusiasts, Deus Nachina represents a crucial piece of the puzzle in sustainable water management practices in the region.
Year Completed |
1950 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
BIG SAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
62 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River At Virgelle Mt
|
4290cfs |
Big Sandy Creek Near Havre Mt
|
6cfs |
Teton River At Loma Mt
|
30cfs |
Milk River At Havre Mt
|
42cfs |
Marias River Near Loma Mt
|
335cfs |
Judith River Nr Mouth
|
368cfs |
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.
Deus Nachina