Hook #59 Reservoir Report
Nearby: Barley Reservoir Hook #55
Last Updated: December 6, 2025
Located in Rosebud, Montana, Hook #59 is a privately owned earth dam that was completed in 1954 for fire protection, stock, and small fish pond purposes.
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Summary
Situated on Sand Creek, this dam has a height of 17 feet and a length of 480 feet, providing a maximum storage capacity of 103 acre-feet. With a low hazard potential and a condition assessment that is currently not rated, this dam serves as a crucial resource for water management in the area.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Hook #59 is regulated, permitted, inspected, and enforced by the state. While the dam has not been modified in recent years, it meets the necessary guidelines for emergency action planning and risk assessment. With its primary purpose being for fire protection and water storage, the dam plays a vital role in supporting the local ecosystem and ensuring a sustainable water supply for the community.
Representing a commitment to water resource management and climate resilience, Hook #59 stands as a testament to the importance of maintaining and monitoring infrastructure for the protection of both people and the environment. As part of the larger water management system in Montana, this dam exemplifies the collaboration between private owners and state agencies to ensure the safety and sustainability of water resources in the region.
Year Completed |
1954 |
Dam Length |
480 |
Dam Height |
17 |
River Or Stream |
SAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
103 |
Hazard Potential |
Low |
Nid Height |
17 |
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 #59