Jonquil Reservoir Report
Last Updated: December 5, 2025
Jonquil is a private water resource located in Teton, Montana, with a primary purpose of fire protection, stock, or small fish pond.
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Summary
The earth dam, completed in 1938, stands at a height of 15 feet and has a storage capacity of 67 acre-feet. Situated along the TR-BRUCE COULEE, Jonquil plays a crucial role in providing water for fire protection and supporting local livestock operations.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Jonquil is regulated and inspected regularly to ensure its safety and functionality. Despite being rated as having low hazard potential and not yet assessed for condition, Jonquil remains an essential resource for the community of CORDOVA. With its historical significance dating back to the 1930s, this water infrastructure continues to support the surrounding area's water needs while contributing to the conservation of natural resources.
As an earth dam with a focus on multiple purposes, including fire protection and stock supply, Jonquil showcases the intersection of water resource management and climate resilience. Its location within the Congressional District 00 of Montana, under the representation of Greg Gianforte, highlights the importance of sustainable water infrastructure in supporting local communities and ecosystems. With a long history of service and a commitment to regulatory compliance, Jonquil stands as a testament to the vital role that water resources play in mitigating climate-related challenges and promoting environmental stewardship.
Year Completed |
1938 |
Dam Length |
150 |
Dam Height |
15 |
River Or Stream |
TR-BRUCE COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
67 |
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.
Jonquil