Wahl Stock Reservoir Reservoir Report
Nearby: Nerud Ranch #1 Angie
Last Updated: December 18, 2025
Wahl Stock Reservoir, located in Poplar, Montana, along Lost Creek, is a private earth dam completed in 1933 for fire protection, stock, and small fish pond purposes.
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Summary
With a dam height of 20 feet and a storage capacity of 352 acre-feet, this reservoir serves as a vital water resource in McCone County. Managed by the Montana Department of Natural Resources and Conservation (DNRC), Wahl Stock Reservoir is regulated, inspected, and enforced by the state to ensure its safe operation.
Despite its low hazard potential and current "Not Rated" condition assessment, Wahl Stock Reservoir plays a crucial role in water management and conservation efforts in the region. With a maximum storage capacity of 352 acre-feet and a normal storage of 149 acre-feet, this reservoir provides essential water supply for various agricultural, domestic, and wildlife needs. In addition to its practical purposes, Wahl Stock Reservoir also offers recreational opportunities for fishing and wildlife viewing, making it a valuable asset for both water resource and climate enthusiasts.
As a significant feature in the local landscape, Wahl Stock Reservoir represents a blend of historical significance and contemporary water management practices. With its location in the Omaha District and Congressional District 00 of Montana, this reservoir embodies the intersection of human ingenuity and environmental stewardship. Whether for fire protection, stock watering, or recreational enjoyment, Wahl Stock Reservoir stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions.
Year Completed |
1933 |
Dam Length |
250 |
Dam Height |
20 |
River Or Stream |
LOST CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
352 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Redwater River At Circle Mt
|
1cfs |
Nelson Creek Near Van Norman Mt
|
33cfs |
Missouri River Near Wolf Point Mt
|
5020cfs |
Poplar River Near Poplar Mt
|
28cfs |
Yellowstone River At Glendive Mt
|
6000cfs |
Milk River At Nashua Mt
|
233cfs |
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.
Wahl Stock Reservoir