Keogh Reservoir Report
Nearby: Whitetail Dam Delmoe Lake Dam
Last Updated: December 5, 2025
Keogh is a federal irrigation dam located in Whitehall, Montana, along the Little Whitetail Creek.
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Summary
Built by the USDA NRCS in 1956, this earth dam stands at a height of 30 feet and has a length of 519 feet, providing irrigation water storage of 43 acre-feet. With a low hazard potential and no available condition assessment, Keogh serves as a vital water resource infrastructure in Jefferson County.
Managed by the Natural Resources Conservation Service, Keogh primarily serves the purpose of irrigation for agricultural activities in the region. With a maximum discharge capacity of 300 cubic feet per second, this dam plays a crucial role in water management and distribution in the area. Despite limited information on its condition assessment and emergency preparedness, Keogh remains a key component of the local water infrastructure.
Located within the Omaha District, Keogh is overseen by federal agencies with a focus on irrigation and conservation. The dam's presence contributes to the sustainable use of water resources for agricultural purposes in the region. As water resource and climate enthusiasts, the data on Keogh provides insight into the importance of infrastructure like dams in managing water supply and supporting agricultural livelihoods in Montana.
Year Completed |
1956 |
Dam Length |
519 |
Dam Height |
30 |
River Or Stream |
Little Whitetail Creek |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
43 |
Hazard Potential |
Low |
Nid Height |
30 |
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.
Keogh