Guesanborn Reservoir Report
Nearby: Michel #1 Ga Kramer #1
Last Updated: December 6, 2025
Guesanborn, located in Garfield, Montana, is a privately owned earth dam completed in 1936 for the primary purposes of fire protection, stock, or small fish pond.
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Summary
This dam, situated on TR-SAND CREEK, has a height of 20 feet and a length of 300 feet, providing a storage capacity of 135 acre-feet. With a low hazard potential and a condition assessment of "Not Rated," Guesanborn plays a crucial role in water resource management in the region.
Managed by the DNRC and regulated by the state of Montana, Guesanborn is equipped with state-permitting, inspection, and enforcement protocols to ensure its safety and functionality. While currently not rated for its condition, this dam serves as a vital water source for the surrounding area and contributes to the overall water infrastructure in the region. With its historical significance dating back to the 1930s, Guesanborn stands as a testament to the importance of water resource management and climate resilience.
As a part of the Omaha District, Guesanborn falls under Congressional District 00, Montana, represented by Greg Gianforte (R). With a focus on fire protection and water storage, this dam serves multiple purposes for the community of VAN NORMAN and beyond. While its exact operational details and risk management measures are not specified, Guesanborn remains a key asset in the water infrastructure of Montana, highlighting the intersection of water resources and climate adaptation in the region.
Year Completed |
1936 |
Dam Length |
300 |
Dam Height |
20 |
River Or Stream |
TR-SAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
135 |
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.
Guesanborn