Hook #10 Reservoir Report
Last Updated: December 6, 2025
Located in Rosebud County, Montana, Hook #10 is a privately owned earth dam completed in 1941 with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond.
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Summary
The dam stands at a height of 18 feet and has a length of 1400 feet, with a storage capacity of 167 acre-feet. Situated on Trail Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by state authorities to ensure its safety and functionality.
With a low hazard potential and a current condition assessment of "Not Rated," Hook #10 serves as a vital water resource in the region, contributing to the local ecosystem and supporting various uses such as firefighting efforts, livestock watering, and recreational fishing. The dam's location in Miles City and its proximity to the Congressional District of Montana underscore its importance in water management and climate resilience efforts. Although the dam has not been modified in recent years and lacks certain monitoring and emergency preparedness features, its regulated status and ownership structure ensure accountability and oversight in maintaining its integrity.
As water resource and climate enthusiasts continue to monitor and assess the impact of infrastructure on environmental sustainability, structures like Hook #10 play a crucial role in water storage, management, and conservation efforts. With its historical significance and ongoing regulatory oversight, this dam represents a blend of heritage and modern engineering practices aimed at balancing human needs with ecological preservation. As discussions around water security and climate adaptation intensify, Hook #10 stands as a testament to the importance of responsible water resource management in navigating a changing climate landscape.
Year Completed |
1941 |
Dam Length |
1400 |
Dam Height |
18 |
River Or Stream |
TRAIL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
167 |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yellowstone River At Forsyth Mt
|
5430cfs |
Yellowstone River At Miles City Mt
|
8100cfs |
Tongue River At Miles City Mt
|
263cfs |
Pumpkin Creek Near Miles City Mt
|
0cfs |
Powder River Near Locate Mt
|
231cfs |
Nelson Creek Near Van Norman Mt
|
33cfs |
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 #10