Aznoe #1 Reservoir Report
Nearby: Hey Ray #2 Kneeded
Last Updated: December 5, 2025
Aznoe #1 is a privately owned earth dam located in Loma, Chouteau, Montana, along the Basin Coulee river or stream.
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Summary
Completed in 1962, this dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 10 feet and a storage capacity of 101 acre-feet, it plays a crucial role in water resource management in the area, covering a drainage area of 6.02 square miles.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Aznoe #1 has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. While it has not been inspected recently, the dam is regulated and permitted by the state, with provisions for regular inspections, enforcement, and emergency preparedness. The dam's location and purpose make it a valuable asset for water storage and protection against potential hazards in the region.
For water resource and climate enthusiasts, Aznoe #1 presents an intriguing case study of a small-scale earth dam that contributes to local water management efforts. Its design, purpose, and regulatory oversight provide valuable insights into the intersection of water infrastructure, environmental protection, and community resilience. As a key feature in the Omaha District's water infrastructure, Aznoe #1 showcases the importance of sustainable dam management practices in ensuring water security and safety for the surrounding area.
Year Completed |
1962 |
Dam Length |
80 |
Dam Height |
10 |
River Or Stream |
BASIN COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Drainage Area |
6.02 |
Nid Storage |
101 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Teton River Near Dutton Mt
|
83cfs |
Marias River Near Chester Mt
|
249cfs |
Lake Creek Near Power Mt
|
30cfs |
Missouri River At Fort Benton Mt
|
4720cfs |
Marias River Near Loma Mt
|
335cfs |
Missouri River Near Great Falls Mt
|
3530cfs |
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.
Aznoe #1