Collins Reservoir Report
Last Updated: December 6, 2025
Collins, a private water structure located in Hinsdale, Montana, serves multiple purposes including fire protection, stock, and small fish pond management.
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Summary
Constructed in 1955, the earth dam stands at a height of 22 feet and has a length of 150 feet, providing a storage capacity of 55 acre-feet. Managed by the Montana Department of Natural Resources and Conservation (DNRC), Collins is regulated, inspected, and enforced by state authorities, ensuring its compliance with safety standards.
Situated on TR-Rock Creek in Valley County, Collins has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Although the dam has not undergone recent inspections or assessments, its emergency action plan (EAP) status remains unprepared. Despite its modest size and minimal risk, Collins plays a crucial role in water resource management and environmental conservation in the region, contributing to fire protection and livestock maintenance while serving as a habitat for small fish populations.
With its location in a scenic part of Montana, Collins stands as a testament to the importance of small-scale water structures in supporting various ecological and human needs. As water resource and climate enthusiasts, the data on Collins provides valuable insights into the management and regulation of such structures, highlighting the collaborative efforts between private owners and state agencies to ensure the safety and sustainability of water resources in the area.
Year Completed |
1955 |
Dam Length |
150 |
Dam Height |
22 |
River Or Stream |
TR-ROCK CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
55 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
Collins