Lumberjack Junior Reservoir Report
Nearby: Neikro Sheep Buyer
Last Updated: December 5, 2025
Lumberjack Junior, located in Chouteau, Montana, is a privately owned dam that serves multiple purposes, including fire protection, stock watering, and creating a small fish pond.
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Summary
Built in 1950 by the USDA NRCS, this earth dam stands at a height of 20 feet and spans 130 feet in length. The reservoir has a storage capacity of 67 acre-feet, with a normal storage level of 23 acre-feet. It is situated on Timber Coulee, a stream in the area.
Managed by the DNRC and regulated by the state of Montana, Lumberjack Junior is classified as having a low hazard potential and currently has a "Not Rated" condition assessment. The dam has not been inspected recently, and its emergency action plan status remains unknown. The surrounding area has a drainage area of 31.25 square miles, with a maximum discharge of 100 cubic feet per second. Overall, Lumberjack Junior plays a crucial role in water resource management and wildlife conservation efforts in the region.
As a key feature of the local landscape, Lumberjack Junior serves as a vital resource for the community of Fort Benton, providing essential water storage for fire protection and agricultural purposes. With its historical significance dating back to the mid-20th century, this dam stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions. Enthusiasts of water resources and climate conservation will find Lumberjack Junior to be an intriguing case study in the intersection of human infrastructure and natural ecosystems.
Year Completed |
1950 |
Dam Length |
130 |
Dam Height |
20 |
River Or Stream |
TIMBER COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
31.25 |
Nid Storage |
67 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Teton River Near Dutton Mt
|
83cfs |
Lake Creek Near Power Mt
|
30cfs |
Muddy Creek At Vaughn Mt
|
86cfs |
Sun River Near Vaughn Mt
|
2680cfs |
Missouri River Near Great Falls Mt
|
3530cfs |
Missouri River Near Ulm Mt
|
3160cfs |
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.
Lumberjack Junior