Mud Lake #1 Reservoir Report
Last Updated: December 5, 2025
Mud Lake #1 is a private earth dam located in Beaverhead, Montana, along the TR-RED ROCK RIVER.
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Summary
Built in 1945, this dam serves multiple purposes including fire protection, stock watering, and small fish pond management. With a height of 10 feet and a length of 200 feet, Mud Lake #1 has a storage capacity of 186 acre-feet, with a normal storage level of 95 acre-feet.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Mud Lake #1 is classified as having low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While lacking specific inspection and emergency action plan details, the dam remains under state jurisdiction and is regulated, inspected, and enforced by the DNRC. Despite being a relatively small structure, Mud Lake #1 plays a critical role in supporting local water resource needs and environmental conservation efforts in the region.
Located in a picturesque rural setting, Mud Lake #1 is a vital component of the local ecosystem, providing essential water resources for fire protection, agriculture, and wildlife habitat. As climate change continues to impact water availability in the region, dams like Mud Lake #1 are increasingly important for managing water resources sustainably and adapting to changing environmental conditions. With the support of state agencies and private ownership, Mud Lake #1 stands as a testament to the importance of responsible water management in the face of a changing climate.
Year Completed |
1945 |
Dam Length |
200 |
Dam Height |
10 |
River Or Stream |
TR-RED ROCK RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Nid Storage |
186 |
Hazard Potential |
Low |
Nid Height |
10 |
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.
Mud Lake #1
Bear Creek