Alderman #2 Reservoir Report
Nearby: Aye #1 Alderman #1
Last Updated: December 6, 2025
Alderman #2 is a privately owned earth dam located in Powder River, Montana, near the city of Miles City.
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Summary
Built in 1945 for fire protection, stock, and small fish pond purposes, this dam has a height of 30 feet and a storage capacity of 77 acre-feet. Situated on TR-Fiftyfour Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state permitting, inspection, and enforcement.
With a low hazard potential and a current condition assessment of "Not Rated," Alderman #2 serves as a vital resource for water management in the region. While it does not have a designated emergency action plan (EAP) in place, the dam's minimal risk profile suggests that it may not require immediate attention. The surrounding area is represented in Congress by Greg Gianforte, providing a political connection to potential funding or support for future maintenance or upgrades to ensure the dam's continued functionality and safety.
Water resource enthusiasts and climate advocates alike can appreciate the historical significance and ecological importance of Alderman #2. As a key feature in the local landscape, this dam plays a crucial role in providing essential services such as fire protection and stock watering while also supporting biodiversity through its small fish pond function. With its location in a rural area of Montana, Alderman #2 stands as a testament to the ingenuity and resourcefulness of private owners in managing and stewarding water resources for the benefit of both humans and wildlife.
Year Completed |
1945 |
Dam Length |
200 |
Dam Height |
30 |
River Or Stream |
TR-FIFTYFOUR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
30 |
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.
Alderman #2