A-3 Detention, also known as Angell Draw, is a privately owned earth dam located in Lingle, Wyoming, in Goshen County. Completed in 1969, this structure primarily serves the purpose of flood risk reduction along the Angell Draw river. With a maximum storage capacity of 1334 acre-feet and a normal storage capacity of 800 acre-feet, A-3 Detention covers a surface area of 89 acres and has a drainage area of 5.1 square miles.

Standing at a height of 30 feet with a hydraulic height of 24 feet, A-3 Detention spans a length of 2650 feet and features a spillway width of 800 feet. The dam's low hazard potential and fair condition assessment suggest that it is currently in good operational shape. The last inspection in June 2017 deemed it to be in fair condition, with an inspection frequency of every 5 years. Overall, A-3 Detention plays a critical role in mitigating flood risks in the area, showcasing effective engineering and maintenance practices for water resource and climate enthusiasts to appreciate.