Summary
Completed in 1930, the dam stands at 10 feet high and spans 345 feet in length, with a storage capacity of 74 acre-feet. Situated on the TR-Black Coulee stream within the Omaha District, the dam is regulated by the Montana DNRC and undergoes regular state inspections and enforcement to ensure its structural integrity and safety.
Despite its low hazard potential, Olson #2 (Phillips) has not been rated for its current condition. The dam has not been modified in recent years and does not have an emergency action plan (EAP) in place. While the risk assessment and management measures are not specified, the dam is situated in a congressional district represented by Greg Gianforte (R) and plays a crucial role in providing water resources for fire protection and stock watering in the area. Enthusiasts interested in water resource management and climate resilience will find Olson #2 (Phillips) to be a significant infrastructure supporting local ecosystem sustainability and community safety.
Year Completed |
1930 |
Dam Length |
345 |
Dam Height |
10 |
River Or Stream |
TR-BLACK COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Nid Storage |
74 |
Hazard Potential |
Low |
Nid Height |
10 |
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.
Olson #2 (Phillips)