Dd No 5-8 is a flood risk reduction structure located in Lane, Kansas. Built in 1991, this earth dam stands at a height of 44.5 feet and has a length of 1350 feet. It serves the primary purpose of flood risk reduction and has a normal storage capacity of 36 acre-feet, with a maximum storage of 2639 acre-feet.

The dam is regulated by the Kansas Department of Agriculture and has state permitting, inspection, and enforcement processes in place. Despite its low hazard potential and moderate risk assessment, the dam's condition has not been rated. With a spillway width of 340 feet, Dd No 5-8 is designed to handle a maximum discharge of 12,634 cubic feet per second, providing vital flood protection for the surrounding area.

Owned by the local government and designed by Bucher Willis & Ratliff, Dd No 5-8 plays a crucial role in managing water resources in the region. Its strategic location and design make it a key asset in mitigating flood risks and ensuring the safety of nearby communities.