Sims #1 Reservoir Report
Nearby: Watson #1 Gearhart #11
Last Updated: January 11, 2026
Sims #1 is a privately owned earth dam located in Rosebud, Montana, constructed in 1965 by the USDA NRCS for fire protection, stock, or small fish pond purposes.
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Summary
This dam, with a height of 25 feet and a storage capacity of 39 acre-feet, serves the local community and is regulated by the Montana Department of Natural Resources and Conservation. Situated along TR-HAY CR, Sims #1 has a low hazard potential and is currently in a condition that has not been assessed.
The dam is managed by the Natural Resources Conservation Service and falls under the jurisdiction of the state of Montana. It has not been modified over the years and lacks specific data on surface area, drainage area, or maximum discharge. Despite the absence of recent inspections and detailed assessments, Sims #1 remains a crucial structure for fire protection and water resource management in the region. As climate change continues to impact water resources, the importance of maintaining and monitoring dams like Sims #1 becomes increasingly significant for sustainable water management in the area.
Year Completed |
1965 |
Dam Length |
100 |
Dam Height |
25 |
River Or Stream |
TR-HAY CR |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
39 |
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.
Sims #1