Antelope Springs Dam Reservoir Report
Last Updated: December 24, 2025
Antelope Springs Dam, located in Sweetwater Station, Wyoming, is a gravity dam primarily used for fire protection, stock, and as a small fish pond.
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Summary
Built in 1940 by the Bureau of Land Management, this dam on Antelope Creek stands at a structural height of 21 feet and has a hydraulic height of 13 feet. With a storage capacity of 84.5 acre-feet, the dam covers a surface area of 7.1 acres and serves a drainage area of 1.21 square miles.
Despite its low hazard potential, Antelope Springs Dam has not been rated for its condition assessment, and the last inspection was conducted in September 2015. The dam does not have an Emergency Action Plan in place, and there is no information available on its risk assessment or risk management measures. Managed by the Bureau of Land Management, the dam's construction, operation, and regulatory oversight fall under the jurisdiction of the federal agency.
Antelope Springs Dam plays a crucial role in providing water resources for fire protection and supporting local wildlife in the region. As a key structure in the area, continued monitoring and maintenance are essential to ensure its long-term functionality and safety for the surrounding community and ecosystem.
Year Completed |
1940 |
Dam Length |
620 |
River Or Stream |
Antelope Creek |
Primary Dam Type |
Gravity |
Surface Area |
7.1 |
Hydraulic Height |
13 |
Drainage Area |
1.21 |
Nid Storage |
84.5 |
Structural Height |
21 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
21 |
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 Springs Dam
Sweetwater River