Bar G9 #2 Reservoir Report
Nearby: Kesterson #1 Bar 69 #4
Last Updated: December 5, 2025
Bar G9 #2 is a privately owned earth dam located in Mosby, Montana, along TR-HOME CREEK.
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Summary
Built in 1950 by USDA NRCS, this dam stands at 17 feet high and spans 400 feet in length, providing essential water resources for fire protection, livestock, and small fish ponds in the area. With a storage capacity of 149 acre-feet, the dam serves as a vital infrastructure for the community.
Managed by the DNRC and regulated by the state of Montana, Bar G9 #2 has a low hazard potential and a moderate risk assessment rating. Despite not being rated for condition assessment, the dam is inspected, permitted, and enforced by state agencies, ensuring its structural integrity and safety. The area is represented by Greg Gianforte (R) in Congressional District 00, Montana, highlighting the significance of water resource management in the region.
Water resource and climate enthusiasts will be captivated by the strategic location and purpose of Bar G9 #2, serving as a critical asset for water storage and management in Rosebud County, Montana. With a focus on fire protection, livestock, and small fish pond support, this dam plays a crucial role in sustaining the local ecosystem and providing essential water resources for the community. Its low hazard potential and moderate risk assessment underscore the importance of ongoing monitoring and management to ensure the long-term viability of this vital infrastructure.
Year Completed |
1950 |
Dam Length |
400 |
Dam Height |
17 |
River Or Stream |
TR-HOME CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Drainage Area |
0.31 |
Nid Storage |
149 |
Hazard Potential |
Low |
Nid Height |
17 |
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.
Bar G9 #2