Fannon #2 Reservoir Report
Nearby: Murion, B. #3 Fannon #1
Last Updated: December 6, 2025
Located in Garfield County, Montana, Fannon #2 is a privately owned earth dam constructed in 1939 for fire protection, stock, or as a small fish pond.
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Summary
The dam stands at a height of 25 feet and stretches 240 feet in length, with a storage capacity of 23 acre-feet. Situated on TR-Vail Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state inspection, enforcement, and permitting requirements.
Despite its low hazard potential and current "Not Rated" condition assessment, Fannon #2 serves as a vital resource for water management and conservation in the region. The dam plays a crucial role in providing essential water supply for fire protection and agricultural purposes, as well as supporting local ecosystems through fish pond habitat. As climate change continues to impact water resources, monitoring and maintenance of structures like Fannon #2 are essential to ensure their continued functionality and resilience in the face of evolving environmental challenges.
With its strategic location and historical significance, Fannon #2 represents a valuable asset for water resource and climate enthusiasts. As part of the broader network of dams and reservoirs in Montana, this structure highlights the critical role of small-scale water management in supporting community resilience and sustainability. By understanding and appreciating the importance of infrastructure like Fannon #2, individuals can contribute to informed decision-making and stewardship of water resources for future generations.
Year Completed |
1939 |
Dam Length |
240 |
Dam Height |
25 |
River Or Stream |
TR-VAIL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
23 |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nelson Creek Near Van Norman Mt
|
33cfs |
Musselshell River At Mosby Mt
|
12cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
Milk River At Nashua Mt
|
233cfs |
Milk River At Tampico Mt
|
123cfs |
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.
Fannon #2