Powell #1 (Blaine) Reservoir Report
Nearby: Powell #2 (Blaine) Mitchell
Last Updated: December 5, 2025
Powell #1 in Blaine, Montana, is a private earth dam constructed in 1930 for fire protection, stock, and small fish pond purposes along TR-Tin Cup Creek.
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Summary
With a dam height of 10 feet and a storage capacity of 92 acre-feet, this low-hazard structure serves the local community while also providing environmental benefits. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular state inspections and enforcement measures to ensure its safety and functionality.
Located in Congressional District 00 of Montana, Powell #1 is owned and operated by a private entity, with no federal agency involvement in its funding, design, construction, or regulation. Despite its age, the dam's condition assessment is not rated, indicating a need for further evaluation. While it has not experienced any modifications in recent years, the structure's emergency action plan (EAP) status, risk assessment, and management measures remain unclear, highlighting potential areas for improvement in emergency preparedness and risk mitigation efforts.
With its modest size and primary purpose of providing essential water resources for fire protection and livestock, Powell #1 plays a crucial role in supporting the local ecosystem and community resilience. As water resource and climate enthusiasts, it is important to monitor and advocate for the safety and sustainability of such dams to ensure their continued contribution to water management and environmental conservation efforts in the region.
Year Completed |
1930 |
Dam Length |
300 |
Dam Height |
10 |
River Or Stream |
TR-TIN CUP CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Nid Storage |
92 |
Hazard Potential |
Low |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Peoples Creek Near Hays Mt
|
4cfs |
Milk River Near Harlem Mt
|
69cfs |
Missouri River Near Landusky Mt
|
9100cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Judith River Nr Mouth
|
368cfs |
Battle Creek Near Chinook Mt
|
12cfs |
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.
Powell #1 (Blaine)