Bethel #4 Reservoir Report
Nearby: H Stensvad #1 Damschen #2
Last Updated: December 5, 2025
Bethel #4, located in Mosby, Montana, is a privately owned earth dam completed in 1955 for multiple purposes including fire protection, stock, and a small fish pond.
°F
°F
mph
Wind
%
Humidity
Summary
This dam on TR-Anderson Coulee has a height of 20 feet and a length of 350 feet, providing a storage capacity of 64 acre-feet. With a low hazard potential, Bethel #4 is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular state inspections and enforcement to ensure its safety and compliance with regulations.
The dam's primary purpose of fire protection and stock maintenance highlights its importance for local water resource management and agricultural activities. Despite not having a condition rating, Bethel #4's stable structure and low hazard potential indicate its reliability in providing essential water resources for the community. As a significant feature in the local landscape, this dam contributes to the ecological balance of the area and supports sustainable water use practices in the region.
Bethel #4's location in Petroleum County, Montana, within the Omaha District of the US Army Corps of Engineers, underscores its role in water resource management and climate resilience efforts. As a vital infrastructure for water storage and conservation, this dam serves as a valuable resource for the local community and underscores the importance of maintaining and monitoring such structures for long-term water security in the face of changing climatic conditions.
Year Completed |
1955 |
Dam Length |
350 |
Dam Height |
20 |
River Or Stream |
TR-ANDERSON COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
64 |
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.
Bethel #4