Antelope Creek Reservoir Reservoir Report
Last Updated: December 20, 2025
Antelope Creek Reservoir, located in Wolf Point, Montana, is a privately owned earth dam constructed in 1944 by the USDA NRCS.
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Summary
This reservoir serves multiple purposes including fire protection, stock watering, and as a small fish pond. With a dam height of 22 feet and a storage capacity of 97 acre-feet, Antelope Creek Reservoir plays a crucial role in managing water resources in the region.
The reservoir is situated on the West Fork of Sand Creek and has a drainage area of 3.75 square miles. It has a low hazard potential and is currently in a not rated condition. While the dam has not been inspected recently, it is regulated by the Montana Department of Natural Resources Conservation (DNRC) and meets state permitting, inspection, and enforcement requirements. Although there are no associated structures or outlet gates, the reservoir has a spillway width of 150 feet to manage a maximum discharge of 1500 cubic feet per second.
Antelope Creek Reservoir provides essential water resources for the local community while also serving as a valuable habitat for small fish species. With its strategic location and purposeful design, this reservoir stands as a testament to effective water management practices in Montana.
Year Completed |
1944 |
Dam Length |
1000 |
Dam Height |
22 |
River Or Stream |
TR-WEST FORK SAND CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Drainage Area |
3.75 |
Nid Storage |
97 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
Antelope Creek Reservoir