Leachman #1 Reservoir Report
Nearby: Leachman #2 Leachman #4
Last Updated: December 5, 2025
Leachman #1 is a privately owned earth dam located in Yellowstone County, Montana, specifically in the city of Huntley.
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Summary
Completed in 1965, this dam serves multiple purposes including fire protection, stock watering, and providing a small fish pond. Situated on the East Fork Pryor Creek, the dam has a height of 20 feet and a storage capacity of 71 acre-feet, with a normal storage level of 12 acre-feet.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Leachman #1 has been deemed to have a low hazard potential and is currently rated as "Not Rated" for its condition assessment. While the dam has not been inspected recently, it falls under the jurisdiction of the state and is subject to state regulations, permitting, inspection, and enforcement. Despite its age, Leachman #1 continues to play a vital role in providing water resources for the local community and supporting various agricultural and environmental needs in the region.
With its strategic location and important role in water resource management, Leachman #1 represents a key infrastructure asset in Yellowstone County. As water resource and climate enthusiasts, understanding the significance and condition of dams like Leachman #1 is crucial for ensuring the sustainable use and management of water resources in the region. As such, ongoing monitoring, maintenance, and potential upgrades to the dam will be essential to secure its continued functionality and safety for the surrounding community.
Year Completed |
1965 |
Dam Length |
285 |
Dam Height |
20 |
River Or Stream |
EAST FORK PRYOR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Nid Storage |
71 |
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.
Leachman #1