Leachman #4 Reservoir Report
Nearby: Dr Lee #1 Leachman #1
Last Updated: December 5, 2025
Located in Yellowstone County, Montana, Leachman #4 is a private earth dam completed in 1979 for fire protection, stock, and small fish pond purposes.
°F
°F
mph
Wind
%
Humidity
Summary
With a height of 20 feet and a storage capacity of 57 acre-feet, this low hazard potential structure serves as a vital resource for the surrounding area. The dam is situated on the East Fork Pryor Creek, within close proximity to the city of Huntley, making it a key component in the local water management system.
Despite being privately owned, Leachman #4 is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring that it meets state inspection, enforcement, and permitting requirements. The dam's condition is currently rated as "Not Rated," with no recent inspection data available. While the risk assessment and emergency preparedness status of the dam remains unknown, its importance in providing water for fire protection and livestock makes it a crucial asset for the community. Enthusiasts of water resources and climate will find Leachman #4 to be an intriguing example of the intersection between human infrastructure and natural ecosystems in the region.
Year Completed |
1979 |
Dam Length |
125 |
Dam Height |
20 |
River Or Stream |
EAST FORK PRYOR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
57 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pryor Creek Nr Huntley Mt
|
21cfs |
Yellowstone River At Billings Mt
|
2880cfs |
Bighorn River Near St. Xavier
|
1950cfs |
Clarks Fork Yellowstone River At Edgar Mt
|
458cfs |
Little Bighorn River Near Hardin Mt
|
206cfs |
Willow Creek Near Boyd Mt
|
20cfs |
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 #4