Dd No 8, located in Melvern, Kansas, is a local government-owned earth dam completed in 1996 to primarily reduce flood risks along Elm Creek. The dam stands at a height of 29 feet and spans 1000 feet in length, with a storage capacity of 663.27 acre-feet and a normal storage level of 62.96 acre-feet. Despite being classified as low hazard potential and not rated in terms of condition assessment, the dam is state-regulated and subject to inspection, permitting, and enforcement by the Kansas Department of Agriculture.

The dam's spillway is uncontrolled and measures 100 feet in width, capable of discharging a maximum of 2040 cubic feet per second. The structure has no outlet gates and is associated with no other structures. Although the dam has not been modified in recent years, it is identified as a moderate risk (level 3) in terms of potential hazards. With its strategic location and design for flood risk reduction and debris control, Dd No 8 serves as a vital infrastructure in safeguarding the surrounding area from potential water-related disasters. Climate enthusiasts and water resource experts alike can appreciate the importance of this dam in managing water resources and mitigating the impacts of extreme weather events in Wabaunsee County, Kansas.