Draco Reservoir Report
Nearby: Dramamine Doukhobors
Last Updated: December 5, 2025
Draco, also known as Kolar Reservoir Dam #4, is a private dam located in Judith Basin, Montana, along the TR-ARROW CREEK.
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Summary
Completed in 1950, this Earth-type dam stands at a height of 35 feet and serves multiple purposes including fire protection, stock, and small fish pond. With a storage capacity of 102 acre-feet and a surface area of 9 acres, Draco plays a crucial role in providing water resources for the local community.
Owned privately, Draco is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular inspections, enforcement, and permitting to ensure its structural integrity and safety. Despite being classified as having low hazard potential and not yet rated for condition assessment, Draco remains a significant asset for water resource management in the area. Its location, with coordinates 47.309009 latitude and -110.482494 longitude, contributes to its strategic importance in the region.
With a primary focus on fire protection and providing water for livestock and small fish, Draco stands as a testament to sustainable water resource management. As a key feature in the local landscape, this dam not only serves practical purposes but also highlights the importance of maintaining and monitoring water infrastructure for climate resilience and environmental sustainability. With its historical significance and ongoing regulatory oversight, Draco remains a vital component in the water resource system of Montana.
Year Completed |
1950 |
Dam Length |
300 |
Dam Height |
35 |
River Or Stream |
TR-ARROW CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
29 |
Nid Storage |
102 |
Hazard Potential |
Low |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Belt Creek Near Monarch Mt
|
14cfs |
Missouri River Near Great Falls Mt
|
3530cfs |
Missouri River At Fort Benton Mt
|
4720cfs |
Teton River At Loma Mt
|
30cfs |
Smith River Near Eden Mt
|
119cfs |
Missouri River Near Ulm Mt
|
3160cfs |
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.
Draco