Douglas Reservoir Report
Last Updated: December 5, 2025
Douglas is a private dam located in Dodson, Montana, along the TR-Fifteen Mile river.
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Summary
Built in 1950, this Earth dam stands at 15 feet tall and has a storage capacity of 166 acre-feet. Primarily used for fire protection, stock, and small fish pond purposes, Douglas is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected and enforced by the state authorities. With a low hazard potential and a condition assessment of "Not Rated," Douglas serves as a critical water resource for the surrounding area.
Situated in Blaine County, Montana, Douglas plays a crucial role in water management and climate resilience efforts in the region. With a normal storage capacity of 65 acre-feet and a maximum storage capacity of 166 acre-feet, this dam provides essential water supply for various purposes. Despite its low hazard potential, Douglas remains a vital infrastructure for fire protection and agricultural activities in the area. The dam's location along the TR-Fifteen Mile river enhances its significance in the local water resource network.
Managed by a private owner, Douglas contributes to water security and ecosystem health in the region. Although its condition assessment is "Not Rated," the dam's operational capabilities and low hazard potential make it a valuable asset for water users in Dodson and beyond. As water resource and climate enthusiasts, understanding the role of structures like Douglas in maintaining sustainable water systems is essential for promoting resilience in the face of changing environmental conditions.
Year Completed |
1950 |
Dam Length |
150 |
Dam Height |
15 |
River Or Stream |
TR-FIFTEEN MILE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
166 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Peoples Creek Near Hays Mt
|
4cfs |
Milk River Near Harlem Mt
|
69cfs |
Battle Creek Near Chinook Mt
|
12cfs |
Milk River Near Dodson Mt
|
68cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Milk River At Havre Mt
|
42cfs |
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.
Douglas