Hook #61 Reservoir Report
Nearby: Hook #59 Barley Reservoir
Last Updated: December 6, 2025
Hook #61, located in Rosebud, Montana, is a privately owned earth dam completed in 1957 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at a height of 16 feet and has a length of 495 feet, providing a maximum storage capacity of 64 acre-feet. Situated on the West Fork Jack Creek, this structure plays a crucial role in water resource management in the region.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Hook #61 is regulated and inspected regularly to ensure its safety and functionality. With a low hazard potential and a condition assessment of "Not Rated," this dam serves as a vital component of the local water infrastructure. While the dam has not been modified in recent years, it continues to effectively fulfill its intended purposes and contribute to the overall water management efforts in the area.
For water resource and climate enthusiasts, Hook #61 presents an intriguing case study of a privately owned dam in a rural setting. With its historical significance and functional design, this structure demonstrates the importance of proper maintenance and regulation in ensuring the resilience of water infrastructure in the face of changing environmental conditions. As efforts continue to address water management challenges, Hook #61 stands as a testament to the critical role that individual structures play in sustaining water resources for both human and ecological needs.
Year Completed |
1957 |
Dam Length |
495 |
Dam Height |
16 |
River Or Stream |
WEST FORK JACK CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
16 |
Nid Storage |
64 |
Hazard Potential |
Low |
Nid Height |
16 |
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.
Hook #61