B G Olson #2 Reservoir Report
Nearby: J Galt #10 B G Olson #1
Last Updated: December 8, 2025
B G Olson #2 is a privately owned earth dam in Forsyth, Montana, completed in 1915 with a primary purpose of providing fire protection, stock watering, and a small fish pond.
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Summary
Located on the Nelson Coulee, this dam stands at a height of 20 feet and has a storage capacity of 82 acre-feet. Despite being state-regulated by the DNRC with permitting, inspection, and enforcement in place, the dam is classified as having a low hazard potential and is currently rated as "Not Rated" for condition assessment.
With its historical significance dating back over a century, the B G Olson #2 dam continues to serve its intended purposes while maintaining a low risk profile. The dam's location in the Omaha District under Congressional District 00, Montana, positions it as a critical asset for the local community in Rosebud County. While lacking specific details on inspections, emergency action plans, and risk assessment, the dam's effective operation underscores its importance for water resource and climate management enthusiasts.
As water resource and climate enthusiasts delve into the data surrounding B G Olson #2, they will uncover a fascinating story of a century-old dam that remains vital for fire protection, stock watering, and recreational use in Forsyth, Montana. The dam's modest size, combined with its low hazard potential, underscores its reliability and importance for the community. With state regulations in place and a private ownership structure, B G Olson #2 stands as a testament to the enduring legacy of water infrastructure in the region.
Year Completed |
1915 |
Dam Length |
130 |
Dam Height |
20 |
River Or Stream |
NELSON COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
82 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
B G Olson #2