French #1 Reservoir Report
Nearby: Heckmiller #1 French #5
Last Updated: December 6, 2025
French #1 is a private earth dam located in Kinsey, Montana, along Sage Creek.
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Summary
Built in 1950, this dam serves multiple purposes including fire protection, stock watering, and small fish pond maintenance. With a height of 25 feet and a length of 127 feet, French #1 has a storage capacity of 66 acre-feet, with a normal storage level of 27 acre-feet.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), French #1 is classified as a low hazard potential structure with a condition assessment of "Not Rated." While the dam has not been inspected recently and lacks an Emergency Action Plan (EAP), it is still regulated, permitted, inspected, and enforced by the state. Despite its age, French #1 continues to provide essential services to the local community and remains a vital part of the water resource infrastructure in the area.
As a key component of the water management system in Custer County, Montana, French #1 exemplifies the importance of sustainable water resource management in the face of changing climate conditions. By ensuring the proper maintenance and monitoring of dams like French #1, stakeholders can mitigate risks and adapt to the challenges posed by a warming climate, ultimately safeguarding water availability for generations to come.
Year Completed |
1950 |
Dam Length |
127 |
Dam Height |
25 |
River Or Stream |
SAGE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
66 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
French #1