Dubbe Reservoir Reservoir Report
Nearby: Horgan Reservoir Don #1
Last Updated: December 20, 2025
Dubbe Reservoir, located in Frazer, Montana, is a privately owned Earth dam completed in 1937 for the primary purposes of fire protection, stock, and as a small fish pond.
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Summary
Managed by the USDA NRCS, this reservoir has a storage capacity of 81 acre-feet and serves as a vital water source for the surrounding area. The dam stands at a height of 19 feet and spans 950 feet across the TR-Porcupine Creek, with a spillway width of 80 feet.
Despite its low hazard potential, Dubbe Reservoir is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular inspections to ensure its structural integrity. The reservoir plays a crucial role in providing water for firefighting efforts, livestock, and recreational fishing activities. With its scenic location in Valley County, Montana, Dubbe Reservoir is a valuable water resource for the local community and a key element in the region's water management infrastructure.
Year Completed |
1937 |
Dam Length |
950 |
Dam Height |
19 |
River Or Stream |
TR-PORCUPINE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Drainage Area |
2.23 |
Nid Storage |
81 |
Hazard Potential |
Low |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Milk River At Nashua Mt
|
233cfs |
Missouri River Near Wolf Point Mt
|
5020cfs |
Poplar River Near Poplar Mt
|
28cfs |
Milk River At Tampico Mt
|
123cfs |
Nelson Creek Near Van Norman Mt
|
33cfs |
Redwater River At Circle Mt
|
1cfs |
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.
Dubbe Reservoir