Decameter Reservoir Report
Nearby: Decarboxylation Scott Ranch
Last Updated: December 5, 2025
Decameter, located in Conrad, Montana, is a private dam with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond.
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Summary
Built in 1960, this earth dam stands at a height of 20 meters and has a length of 500 meters. The dam has a storage capacity of 51 acre-feet, with a normal storage level of 26 acre-feet. It is regulated by the DNRC and falls under the jurisdiction of the state of Montana, with regular inspections and enforcement ensuring its safety and compliance.
Situated on Woods Coulee, Decameter serves as a crucial water resource for the surrounding area, with a low hazard potential but not yet rated for its condition assessment. Despite its age, the dam continues to fulfill its primary purposes effectively and is a vital asset for fire protection and livestock watering in the region. The dam's location in Teton County, Montana, highlights its importance in the local water infrastructure and its contribution to the overall water management in the area.
As a key feature in the water management system of Montana, Decameter plays a significant role in ensuring water availability for fire protection, stock watering, and recreational use. While the dam has not been rated for its condition assessment and lacks certain emergency preparedness measures, its low hazard potential and regular inspections provide confidence in its structural integrity. With a storage capacity of 51 acre-feet and a strategic location in Conrad, Decameter continues to be a valuable resource for the community and a testament to effective water management practices in the state.
Year Completed |
1960 |
Dam Length |
500 |
Dam Height |
20 |
River Or Stream |
WOODS COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
51 |
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.
Decameter