Hellinger Reservoir Report
Nearby: Shay Dam Mccarter West Dam
Last Updated: December 5, 2025
Hellinger is a privately owned earth dam located in Toole County, Montana, specifically in the city of DEVON along WILLOW CREEK.
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Summary
Built in 1935, this dam serves multiple purposes including fire protection, stock watering, and small fish pond management. With a height of 10 feet and a length of 525 feet, Hellinger has a storage capacity of 30 acre-feet, with a normal storage level of 18 acre-feet.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Hellinger is considered to have a significant hazard potential. Despite its age, the dam's condition has not been officially rated, and there is no recent inspection data available. It is important for water resource and climate enthusiasts to monitor Hellinger and ensure that it continues to meet safety standards for its various uses. The dam's location in a rural area highlights the critical role it plays in local water management and emergency preparedness.
As a part of the larger water infrastructure network in Montana, Hellinger is subject to state regulations and permitting, with regular inspections and enforcement measures in place. The dam's proximity to the Omaha District of the US Army Corps of Engineers underscores its importance in the regional water resource management system. Climate change and extreme weather events may pose additional challenges to the maintenance and safety of Hellinger, making it essential for stakeholders to stay informed and engaged in its continued upkeep.
Year Completed |
1935 |
Dam Length |
525 |
Dam Height |
10 |
River Or Stream |
WILLOW CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
10 |
Nid Storage |
30 |
Hazard Potential |
Significant |
Nid Height |
10 |
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.
Hellinger