Withee #1 Reservoir Report
Nearby: Withee #2 Rosa Spring Dam #1
Last Updated: December 6, 2025
Withee #1 is a privately owned earth dam located in Garfield County, Montana, along the TR-BIG WILD HORSE CREEK.
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Summary
Built in 1970, this dam stands at 26 feet tall and stretches 300 feet in length, providing essential services for fire protection, stock, and small fish pond purposes. With a storage capacity of 42 acre-feet, this low hazard potential structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring ongoing inspections and enforcement measures are in place.
Despite its age, Withee #1 has not been recently assessed for its condition, but it is categorized as "Not Rated" in terms of its current state. The dam's emergency action plan (EAP) status is also unclear, with no information available on its preparedness or adherence to guidelines. While the risk potential of Withee #1 remains unknown, its strategic location and purpose make it a crucial asset for water resource management in the region, serving as a vital lifeline for local communities and wildlife alike.
As a significant part of the Omaha District's infrastructure, Withee #1 adds to the network of dams and water management systems that contribute to the overall environmental resilience of the area. With its focus on fire protection, stock, and small fish pond services, this earth dam plays a vital role in maintaining water resources and climate stability in Garfield County, reflecting the importance of sustainable water management practices in the face of changing climatic conditions.
Year Completed |
1970 |
Dam Length |
300 |
Dam Height |
26 |
River Or Stream |
TR-BIG WILD HORSE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
42 |
Hazard Potential |
Low |
Nid Height |
26 |
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.
Withee #1