Landers #1 Reservoir Report
Nearby: Cottonwood Dam (Park) Kaiser
Last Updated: December 4, 2025
Landers #1 is a privately owned irrigation dam located in Wilsall, Montana, along the TR-Muddy Creek.
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Summary
Built in 1949, this earth dam stands at 15 feet high and spans a length of 1060 feet, providing a storage capacity of 93 acre-feet. Operated by the Montana Department of Natural Resources and Conservation (DNRC), Landers #1 is regulated and permitted by the state, ensuring regular inspections and enforcement of safety measures.
Despite its low hazard potential, Landers #1 has not been rated for its current condition. While the dam meets the guidelines for emergency action plans, details such as last inspection date and contact updates are not provided. The risk management measures and assessment summaries for this dam are also not available at this time. However, with its state-regulated status and DNRC oversight, Landers #1 remains a crucial component in the irrigation infrastructure of the region.
With its scenic location in Park County, Montana, Landers #1 serves as a vital resource for agricultural water supply in the area. The dam's importance for irrigation purposes highlights the need for ongoing monitoring and maintenance to ensure the safety and efficiency of water management in the region. Enthusiasts of water resources and climate will find Landers #1 to be a fascinating example of human-engineered infrastructure intersecting with natural ecosystems, showcasing the challenges and responsibilities of managing water resources in a changing climate.
Year Completed |
1949 |
Dam Length |
1060 |
Dam Height |
15 |
River Or Stream |
TR-MUDDY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
93 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Landers #1