Irene is a private earth dam located in Ucross, Wyoming, along the Spring Draw river. Completed in 1963, this dam serves multiple purposes including fire protection, stock, and a small fish pond. With a height of 30 feet and a hydraulic height of 25 feet, Irene has a storage capacity of 40 acre-feet and a normal storage level of 21 acre-feet. The dam has a fair condition assessment and a low hazard potential, making it a relatively safe structure for water resource management.

Owned privately, Irene is regulated by the State Engineer's Office in Wyoming and undergoes regular inspections, with the last inspection conducted in June 2018. The dam has an uncontrolled spillway with a width of 20 feet and an outlet gate with a single valve. Despite its moderate risk assessment, Irene does not have an Emergency Action Plan or inundation maps prepared, highlighting potential areas for improvement in emergency preparedness. Overall, Irene is a crucial structure for water management in Johnson County, providing essential services for fire protection and livestock while maintaining a low hazard potential.