Antelope Dam Reservoir Report
Nearby: Muskrat Dam Spring Creek Dam
Last Updated: December 5, 2025
Antelope Dam, located in Jackson County, Colorado, serves as a vital resource for the management of Antelope Creek and the surrounding ecosystem.
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Summary
Owned and operated by the Fish and Wildlife Service, this earth dam was completed in 1970 with a primary purpose of creating a fish and wildlife pond while also providing flood risk reduction benefits. With a height of 10 feet and a length of 430 feet, the dam has a storage capacity of 234 acre-feet and covers a surface area of 22 acres.
The dam's infrastructure includes other controlled outlet gates and a spillway width of 37 feet. While the hazard potential is deemed low, the dam's condition assessment in 2018 was marked as unsatisfactory. Regular inspections are conducted every five years to ensure its structural integrity. Antelope Dam's role in supporting wildlife habitat and managing water resources underscores its importance in the region, despite its operational and maintenance challenges.
Efforts to address the dam's condition and improve its functionality have been ongoing, with modifications made in 2004 to enhance its hydraulic and structural components. As a regulated facility under the jurisdiction of the Department of Interior's Fish and Wildlife Service, Antelope Dam plays a crucial role in sustaining the local ecosystem and mitigating flood risks in the area. With its strategic location and purposeful design, the dam stands as a testament to the collaborative efforts towards water resource management and climate resilience in Colorado.
Years Modified |
2004 - Hydraulic, 2004 - Structural |
Year Completed |
1970 |
Dam Length |
430 |
Dam Height |
10 |
River Or Stream |
ANTELOPE CREEK |
Primary Dam Type |
Earth |
Surface Area |
22 |
Hydraulic Height |
10 |
Drainage Area |
6.02 |
Nid Storage |
234 |
Structural Height |
10 |
Outlet Gates |
Other Controlled |
Hazard Potential |
Low |
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.
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