French #11 Reservoir Report
Nearby: French #10 French #9
Last Updated: December 6, 2025
French #11 is a privately owned earth dam located in Kinsey, Montana, on the TR-South Sunday Creek.
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Summary
Built in 1960, the dam stands at 26 feet tall with a length of 560 feet and a storage capacity of 60 acre-feet. Its primary purposes include fire protection, providing water for livestock, and serving as a small fish pond. Despite being in a low hazard potential category, the dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular inspections, permitting, and enforcement to ensure its safety and compliance with state regulations.
Situated in Custer County, French #11 is under the jurisdiction of the state of Montana and falls within Congressional District 00. The dam is owned and operated by private entities and has not received federal funding or oversight. While its condition assessment is currently listed as "Not Rated," the dam is considered to meet guidelines for emergency action plans (EAPs) although specific details regarding the preparation and last revision of the EAP are not provided in the data. With its strategic location and purposeful design, French #11 plays a crucial role in water resource management in the area, contributing to fire protection, livestock watering, and recreational activities such as fishing.
Year Completed |
1960 |
Dam Length |
560 |
Dam Height |
26 |
River Or Stream |
TR-SOUTH SUNDAY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
60 |
Hazard Potential |
Low |
Nid Height |
26 |
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 #11