Watt Reservoir Report
Nearby: Bragg #1 Mckeever Reservoir
Last Updated: January 6, 2026
Watt is a privately owned earth dam located in Garfield, Montana, with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Built in 1966 by the USDA NRCS, this dam has a height of 20 feet and a length of 410 feet, providing a storage capacity of 68 acre-feet. Situated on TR-SNOW CREEK, Watt serves as a vital resource for the local community, with a low hazard potential and a condition assessment that is currently not rated.
Managed by the DNRC, Watt is regulated and inspected by the state of Montana to ensure its safety and functionality. With a maximum discharge capacity of 500 cubic feet per second, this dam plays a crucial role in managing water resources and protecting against potential disasters. Although the dam's emergency action plan and risk assessment details are currently unavailable, its construction and purpose highlight the importance of sustainable water management practices in a changing climate.
As climate change continues to impact water resources, structures like Watt are essential for maintaining water supply reliability and protecting against wildfires and other natural disasters. With its strategic location and purpose, Watt stands as a testament to the importance of proactive water management and the collaboration between federal and state agencies to ensure the safety and sustainability of water resources in Montana.
Year Completed |
1966 |
Dam Length |
410 |
Dam Height |
20 |
River Or Stream |
TR-SNOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Drainage Area |
1.91 |
Nid Storage |
68 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Musselshell River At Mosby Mt
|
225cfs |
Nelson Creek Near Van Norman Mt
|
33cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
Milk River At Tampico Mt
|
123cfs |
Beaver Cr Bl Guston Coulee Nr Saco Mt
|
67cfs |
Milk River At Nashua Mt
|
233cfs |
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.
Watt