Griffin #2 Reservoir Report
Nearby: Odegard #2 Griffin
Last Updated: December 6, 2025
Griffin #2, located in Terry, Montana, is a privately owned water structure built in 1956 for fire protection, stock, and small fish pond purposes.
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Summary
Situated on North Wolf Creek, this earth-type dam stands at a height of 20 feet and has a length of 450 feet, providing a storage capacity of 154 acre-feet. Despite being rated as low hazard potential, the dam's condition assessment remains unrated, highlighting the need for further evaluation and maintenance to ensure its long-term safety and functionality.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Griffin #2 is subject to state regulations and inspections to uphold its integrity and compliance with safety standards. The dam's primary purpose and design reflect its importance in providing essential water resources for both fire protection and agricultural needs in the surrounding area. As a crucial component of the local water infrastructure, Griffin #2 serves as a vital resource for the community's resilience against water-related challenges, highlighting the significance of sustainable water management practices in the face of climate change impacts.
With its historical significance and ongoing role in supporting local water needs, Griffin #2 represents a key asset in Montana's water resource portfolio. As climate change continues to pose threats to water availability and quality, the maintenance and monitoring of structures like Griffin #2 are essential to ensure the continued provision of water for various uses. By prioritizing the safety and sustainability of water infrastructure, stakeholders can work towards safeguarding valuable resources for future generations and mitigating the impacts of a changing climate on water availability and resilience.
Year Completed |
1956 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
NORTH WOLF CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
154 |
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.
Griffin #2