Paint Rock #1 Reservoir Report

Last Updated: December 5, 2025

Paint Rock #1 is a privately owned earth dam located in Roundup, Montana, along the Twin Coulee river.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1972, this dam serves multiple purposes including fire protection, stock watering, and creating a small fish pond. With a height of 20 feet and a storage capacity of 122 acre-feet, it plays a crucial role in water resource management in the area.

Managed by the Montana Department of Natural Resources and Conservation (DNRC), Paint Rock #1 is regulated and inspected regularly to ensure its safety and compliance with state regulations. Despite being classified as having a low hazard potential, the dam's condition assessment has not been rated, highlighting the need for continued monitoring and maintenance to mitigate any potential risks.

While specific details on the dam's spillway type, outlet gates, and inspection frequency are not provided, it is clear that Paint Rock #1 plays a vital role in water resource management in Golden Valley County. As climate change continues to impact water availability and quality, the proper maintenance and operation of dams like Paint Rock #1 become increasingly important for ensuring water security in the region.

Year Completed

1972

Dam Length

200

Dam Height

20

River Or Stream

TWIN COULEE

Primary Dam Type

Earth

Hydraulic Height

20

Nid Storage

122

Hazard Potential

Low

Nid Height

20
       
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.