J R Scott #9 Reservoir Report

Last Updated: December 5, 2025

J R Scott #9 is a private earth dam located in Big Horn, Montana, specifically in the city of Pompeys Pillar.


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Summary

Completed in 1956, this dam serves multiple purposes, including fire protection, stock, and a small fish pond. With a height of 15 feet and a length of 400 feet, J R Scott #9 has a storage capacity of 387 acre-feet.

Situated on TR-FLY CREEK, this dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by the state agencies. With a low hazard potential and a condition assessment of "Not Rated," J R Scott #9 provides a vital water resource for the surrounding area. The dam holds a normal storage capacity of 153 acre-feet and plays a crucial role in water management and conservation efforts in the region.

As a key infrastructure for fire protection and agricultural purposes, J R Scott #9 contributes to the sustainable use of water resources in Montana. With its strategic location and modest risk profile, this dam stands as a testament to effective water management practices and the importance of maintaining and regulating water structures for the benefit of local communities and ecosystems.

Year Completed

1956

Dam Length

400

Dam Height

15

River Or Stream

TR-FLY CREEK

Primary Dam Type

Earth

Hydraulic Height

15

Nid Storage

387

Hazard Potential

Low

Nid Height

15
       
Seasonal Comparison

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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.