Ed Styer #4 Reservoir Report
Nearby: Ed Styer #5 Ed Styer #3
Last Updated: December 5, 2025
Located in Fergus County, Montana, Ed Styer #4 is a privately owned earth dam completed in 1949 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at a height of 20 feet and spans a length of 450 feet, with a storage capacity of 51 acre-feet. Situated on TR-ANTELOPE CREEK, this low-hazard structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to state permitting, inspection, and enforcement.
Despite its age, Ed Styer #4 has not been rated for its condition assessment, and its emergency action plan (EAP) status remains unknown. The dam's risk assessment, inundation maps, and risk management measures are also undetermined. With a low hazard potential, the structure serves as a vital resource for fire protection and water storage in the region. As an integral part of the local water infrastructure, Ed Styer #4 plays a crucial role in managing water resources and supporting climate resilience in the area.
As climate change continues to impact water resources, the maintenance and monitoring of dams like Ed Styer #4 are essential for ensuring their safety and functionality. With its state-regulated status and compliance with inspection and enforcement requirements, this earth dam serves as a key component of the water management system in Fergus County. By staying vigilant and proactive in its upkeep, Ed Styer #4 stands ready to support the community's water needs and contribute to sustainable resource management practices in the face of a changing climate.
Year Completed |
1949 |
Dam Length |
450 |
Dam Height |
20 |
River Or Stream |
TR-ANTELOPE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
51 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River Near Landusky Mt
|
9100cfs |
Musselshell River At Mosby Mt
|
12cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
Judith River Nr Mouth
|
368cfs |
Peoples Creek Near Hays Mt
|
4cfs |
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.
Ed Styer #4