Thav Reservoir Report
Nearby: Cloudy Day Robbie (Teton)
Last Updated: December 5, 2025
Thav is a privately owned earth dam located in Montana near the city of Vaughn, specifically on TR-Muddy Creek in Teton County.
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Summary
Built in 1940, the dam stands at a height of 15 feet and serves multiple purposes including fire protection, stock watering, and as a small fish pond. With a storage capacity of 67 acre-feet, Thav plays a crucial role in managing water resources in the region.
Despite its low hazard potential, Thav is regulated and inspected by the Montana Department of Natural Resources and Conservation (DNRC) to ensure its safety and compliance with state regulations. The dam has not been rated for its condition assessment, but it continues to serve its intended purposes effectively. While there are no specific risk management measures or emergency action plans in place for Thav, its presence contributes to the overall water management and climate resilience efforts in the area.
As a key infrastructure for water resource management, Thav provides a valuable resource for fire protection, livestock, and wildlife in the region. Its location within a congressional district in Montana highlights its importance in the local ecosystem and community. With its historical significance and ongoing operational role, Thav stands as a testament to the enduring importance of water resources and climate adaptation in the face of changing environmental conditions.
Year Completed |
1940 |
Dam Length |
175 |
Dam Height |
15 |
River Or Stream |
TR-MUDDY CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
67 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Teton River Near Dutton Mt
|
83cfs |
Lake Creek Near Power Mt
|
30cfs |
Muddy Creek At Vaughn Mt
|
86cfs |
Sun River At Simms Mt
|
1620cfs |
Sun River Near Vaughn Mt
|
2680cfs |
Missouri River Near Ulm Mt
|
3160cfs |
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.
Thav