Irene Reservoir Report
Nearby: Chace No. 1 Willow Springs
Last Updated: December 5, 2025
Irene, also known as Irene Stock Reservoir, is a private water structure located in Carbon County, Wyoming.
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Summary
Built in 1966 by designer Noah E Wolford, this earth dam has a height of 25 feet and serves multiple purposes including fire protection, stock watering, and small fish pond maintenance. Situated along the South Fork First Sand Creek, Irene has a storage capacity of 25 acre-feet and covers a surface area of 3 acres.
With a low hazard potential and fair condition assessment as of the last inspection in 2017, Irene is regulated and inspected by the Wyoming State Engineer's Office. The dam features an uncontrolled spillway and one outlet gate, with a maximum discharge capacity of 1259 cubic feet per second. Despite its moderate risk assessment rating, Irene has not undergone any significant modifications in recent years and continues to serve its intended purposes effectively.
Owned privately, Irene plays a crucial role in water resource management in the area, providing essential services for fire protection and livestock watering. Its location in Alcova, Wyoming, amidst picturesque surroundings, underscores the importance of sustainable water infrastructure for both environmental conservation and community well-being.
Year Completed |
1966 |
Dam Length |
150 |
Dam Height |
25 |
River Or Stream |
SOUTH FORK FIRST SAND CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
19 |
Nid Storage |
25 |
Structural Height |
25 |
Outlet Gates |
Uncontrolled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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.
Irene