R Downs #6 Reservoir Report

Last Updated: December 5, 2025

Located in Big Horn, Montana, R Downs #6 is a privately owned earth dam completed in 1950 for fire protection, stock, and small fish pond purposes.


°F

°F

mph

Wind

%

Humidity

Summary

With a height of 19 feet and a length of 175 feet, this dam has a storage capacity of 90 acre-feet, providing essential water resources for the surrounding area. Situated on TR-PERITSA CREEK, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state permitting, inspection, and enforcement.

Despite its low hazard potential, R Downs #6 has not been rated for its condition assessment, and its emergency action plan (EAP) status is unknown. The dam, with a normal storage capacity of 45 acre-feet, serves as a vital resource for fire protection and irrigation in the region. As a key feature in the local water infrastructure, it plays a critical role in maintaining water security and climate resilience in the area, highlighting the importance of proper maintenance and monitoring of such structures for sustainable water management.

With its historical significance dating back to the mid-20th century, R Downs #6 stands as a testament to the importance of water resource infrastructure in supporting various needs, from fire protection to agricultural activities. As water resource and climate enthusiasts continue to advocate for sustainable water management practices, structures like R Downs #6 serve as vital components in ensuring water security and resilience in the face of changing environmental conditions. The ongoing regulation and oversight of this dam by state authorities demonstrate a commitment to safeguarding water resources for future generations.

Year Completed

1950

Dam Length

175

Dam Height

19

River Or Stream

TR-PERITSA CREEK

Primary Dam Type

Earth

Hydraulic Height

19

Nid Storage

90

Hazard Potential

Low

Nid Height

19
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.