Dyncan #2 Reservoir Report
Nearby: Frank Jenson #1 Bugs Detention Dam
Last Updated: December 6, 2025
Dyncan #2 is a privately owned irrigation dam located in Valley County, Montana, along the TR-CROW CREEK.
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Summary
Built in 1964 by the USDA NRCS, this earth dam stands at 25 feet high with a length of 700 feet, providing irrigation water for agricultural purposes. With a storage capacity of 796 acre-feet, the dam serves as a crucial water resource in the region.
Managed by the DNRC, Dyncan #2 is regulated and inspected regularly to ensure its safety and functionality. Despite being classified as having a low hazard potential and not yet rated for condition assessment, the dam continues to play a vital role in water management in the area. With a maximum discharge capacity of 640 cubic feet per second, the dam contributes to the efficient distribution of water for irrigation purposes.
Located in HINSDALE, Montana, Dyncan #2 is a key infrastructure project in the region, supported by federal funding and designed by the Natural Resources Conservation Service. As climate change continues to impact water resources, dams like Dyncan #2 play a crucial role in managing water supply and ensuring sustainable agriculture practices in the area.
Year Completed |
1964 |
Dam Length |
700 |
Dam Height |
25 |
River Or Stream |
TR-CROW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
2.08 |
Nid Storage |
796 |
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.
Dyncan #2