Highway 14 Detention, located in Lyon County, Minnesota, was completed in 1999 and serves as a flood risk reduction structure along the Cottonwood River. Owned and regulated by the local government, this earth dam stands at a height of 24 feet and has a structural height of 26 feet, with a total length of 518 feet. With a maximum storage capacity of 970 acre-feet and a drainage area of 7 square miles, this detention structure plays a vital role in mitigating flooding risks in the region.

Managed by the County Highway Department, Highway 14 Detention has a low hazard potential and a satisfactory condition assessment as of the last inspection in 2015. While the structure does not have outlet gates, it does feature an uncontrolled spillway with a width of 4 feet. The dam is regularly inspected every 8 years to ensure its functionality in reducing flood risks for the surrounding area.

Despite its moderate risk assessment level, Highway 14 Detention continues to effectively serve its primary purpose of flood risk reduction along the Cottonwood River. With its strategic location and design, this detention structure stands as a crucial asset in safeguarding the local community against potential flooding events.