Wb Goffena #1 Reservoir Report

Last Updated: December 5, 2025

Wb Goffena #1 is a privately owned earth dam located in Mosby, Montana, along Sand Creek.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1955, this dam serves multiple purposes including fire protection, stock water supply, and a small fish pond. With a height of 25 feet and a storage capacity of 93 acre-feet, it plays a crucial role in water resource management in the area.

Managed by the Montana Department of Natural Resources and Conservation (DNRC), this dam is regulated and inspected regularly to ensure its safety and functionality. With a low hazard potential and a condition assessment of "Not Rated," Wb Goffena #1 is an important infrastructure for local water supply and emergency preparedness. Despite lacking detailed information on inspections and emergency action plans, the dam remains a key structure for water resource management in the region.

As part of the Omaha District of the US Army Corps of Engineers, Wb Goffena #1 contributes to the overall water resource management efforts in the area. With its primary purpose being fire protection and stock water supply, this dam plays a vital role in sustaining the local ecosystem and providing essential water resources for the community. Despite its age, Wb Goffena #1 continues to serve its intended purposes effectively, highlighting the importance of maintaining and monitoring essential water infrastructure for climate resilience.

Year Completed

1955

Dam Length

200

Dam Height

25

River Or Stream

SAND CREEK

Primary Dam Type

Earth

Hydraulic Height

25

Nid Storage

93

Hazard Potential

Low

Nid Height

25
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.