Lee #6 Reservoir Report
Nearby: Big Timber #1 Big Timber #3
Last Updated: December 7, 2025
Lee #6 is a privately owned earth dam located in Forsyth, Montana, along the TR-DRY CREEK.
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Summary
Built in 1959, this dam serves multiple purposes, including fire protection, stock watering, and as a small fish pond. With a height of 20 feet and a storage capacity of 113 acre-feet, Lee #6 is designed to provide essential water resources for the surrounding area. Despite its low hazard potential, the dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular inspections to ensure its safety and functionality.
The dam's location in Rosebud County, Montana, makes it a crucial contributor to the local water infrastructure. Its primary owner is a private entity, and it falls under state jurisdiction for regulation and enforcement. Although the dam's condition is currently rated as "Not Rated," its emergency action plan (EAP) status and risk management measures are not specified in the available data. With its modest size and relatively low hazard potential, Lee #6 remains a key asset for water resource management in the region, providing essential services for fire protection, livestock, and aquatic habitat support.
Given its historical significance and ongoing role in water management, Lee #6 stands as a testament to the importance of sustainable dam construction and maintenance practices. As climate change continues to impact water resources and availability, structures like Lee #6 play a vital role in ensuring the resilience of local communities and ecosystems. With proper regulation, inspection, and risk management measures in place, Lee #6 remains a valuable asset for water resource enthusiasts and climate advocates alike, highlighting the intersection of infrastructure, conservation, and sustainable development in the face of a changing climate.
Year Completed |
1959 |
Dam Length |
500 |
Dam Height |
20 |
River Or Stream |
TR-DRY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
113 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Lee #6