East Iron Creek Dam Reservoir Report
Nearby: Russell Storage Cedar Storage
Last Updated: December 5, 2025
East Iron Creek Dam, located in Osage, Wyoming, is a federal-owned structure designed by R2, Rocky Mountain Region, and managed by the USDA Forest Service.
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Summary
Completed in 1996, this Earth-type dam stands at 24 feet high and spans 940 feet along East Iron Creek. Primarily serving as a Fish and Wildlife Pond, the dam also plays a role in flood risk reduction and recreation activities in the area.
With a storage capacity of 67 acre-feet and a maximum discharge of 125 cubic feet per second, East Iron Creek Dam boasts a low hazard potential and a moderate risk assessment rating. Despite its last inspection in 2010, with a 10-year inspection frequency, the dam's condition remains unrated. While it lacks certain emergency preparedness measures like an Emergency Action Plan (EAP) and inundation maps, the dam's risk management measures and overall safety measures are yet to be fully assessed and implemented.
Strategically located within the Omaha District of the US Army Corps of Engineers, East Iron Creek Dam stands as a vital structure contributing to the environmental and recreational landscape of Weston County, Wyoming. As water resource and climate enthusiasts continue to monitor and advocate for sustainable dam management practices, East Iron Creek Dam remains a focal point for ensuring the safety and preservation of the surrounding ecosystem and communities.
Years Modified |
1997 - Other |
Year Completed |
1996 |
Dam Length |
940 |
Dam Height |
24 |
River Or Stream |
EAST IRON CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
67 |
Structural Height |
24 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
East Iron Creek Dam