R Downs #10 Reservoir Report
Nearby: R Downs #4 R Downs #5
Last Updated: December 5, 2025
R Downs #10 is a privately owned earth dam located in Hardin, Montana, along the TR-PERITSA CREEK.
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Summary
Completed in 1950, this dam serves the primary purpose of water supply with a storage capacity of 88 acre-feet and a normal storage level of 21 acre-feet. The dam stands at a height of 8 feet and spans a length of 200 feet, contributing to the low hazard potential associated with this structure.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), R Downs #10 is regulated, permitted, inspected, and enforced by the state to ensure its safety and reliability. The dam has not been formally assessed for its condition and does not have an Emergency Action Plan (EAP) in place. Despite these gaps in documentation, the risk associated with the dam is considered low, providing a sense of security for the surrounding community and the environment.
While R Downs #10 may not have a detailed risk assessment or management plan in place, its role in providing water supply to the area underscores the importance of maintaining and monitoring its condition. With its strategic location in Big Horn County, Montana, this dam stands as a vital resource for water resource and climate enthusiasts who understand the significance of sustainable water management practices in the face of changing environmental conditions.
Year Completed |
1950 |
Dam Length |
200 |
Dam Height |
8 |
River Or Stream |
TR-PERITSA CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
8 |
Nid Storage |
88 |
Hazard Potential |
Low |
Nid Height |
8 |
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.
R Downs #10