Ralph Clark #1 Reservoir Report
Nearby: Clark (Garfield) Aberta
Last Updated: December 5, 2025
Ralph Clark #1 is a private dam located in Garfield, Montana, along the TR-SEVEN BLACKFOOT CREEK.
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Summary
Built in 1955, this earth dam stands at a height of 47 feet and spans 600 feet in length, with a storage capacity of 326 acre-feet. The primary purposes of this dam are for fire protection, stock watering, and creating a small fish pond, making it a valuable resource for the local community.
Owned and regulated by the Montana Department of Natural Resources and Conservation (DNRC), Ralph Clark #1 is classified as a low hazard dam with a condition assessment of "Not Rated." While the dam has not been assessed for its emergency action plan or risk management measures, it is regularly inspected, permitted, and enforced by state authorities. Situated in a picturesque rural setting, this dam provides essential water resources for both agricultural and recreational purposes in the region.
With its historical significance and functional importance, Ralph Clark #1 serves as a vital piece of infrastructure contributing to the water resource management and climate resilience efforts in Montana. As a well-maintained and regulated private dam, it exemplifies the importance of sustainable water infrastructure for both human and environmental needs, ensuring the continued protection and utilization of this precious resource for generations to come.
Year Completed |
1955 |
Dam Length |
600 |
Dam Height |
47 |
River Or Stream |
TR-SEVEN BLACKFOOT CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
47 |
Nid Storage |
326 |
Hazard Potential |
Low |
Nid Height |
47 |
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.
Ralph Clark #1