Richmond (Blaine) Reservoir Report
Last Updated: December 6, 2025
Richmond (Blaine) is a privately owned dam located in Harlem, Montana, along the West Fork of Thirtymile Creek.
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Summary
Completed in 1939, this earthen dam stands at a height of 15 feet and has a storage capacity of 93 acre-feet, primarily used for fire protection, stock, and small fish pond purposes. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state inspection, permitting, and enforcement.
With a low hazard potential and a condition assessment of "Not Rated," Richmond (Blaine) serves as an essential infrastructure for the local community. The dam's location in Blaine County, Montana, falls within Congressional District 00 and is overseen by Congressman Greg Gianforte (R). While the dam has not been assessed for emergency preparedness or risk management measures, its stable condition and state regulation ensure its continued functionality for water resource and climate enthusiasts in the area.
Although lacking detailed assessment in certain areas such as emergency preparedness and risk management, Richmond (Blaine) remains a vital component for fire protection and water storage in Harlem, Montana. Its presence along the West Fork of Thirtymile Creek contributes to the local ecosystem and provides a reliable source of water for various purposes. With its historical significance dating back to 1939, this dam underscores the importance of maintaining and regulating water resources in the region for the benefit of both humans and wildlife.
Year Completed |
1939 |
Dam Length |
350 |
Dam Height |
15 |
River Or Stream |
WEST FORK OF THIRTYMILE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
93 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Richmond (Blaine)