Dd No E-5 is a local government-owned earth dam in Jefferson County, Kansas, designed by King Engineering and completed in 2012 for flood risk reduction along Walnut Creek. The dam stands at 31.7 feet high and spans 737 feet in length, with a storage capacity of 329 acre-feet and a surface area of 9.66 acres. Despite its low hazard potential and moderate risk assessment rating, the dam's condition remains unrated and lacks a formal Emergency Action Plan (EAP) or regular inspection schedule.

Situated within the Rock Island District of the US Army Corps of Engineers, Dd No E-5 serves multiple purposes beyond flood risk reduction, including debris control and providing a habitat for fish and wildlife. While the dam is regulated and permitted by the Kansas Department of Agriculture, it does not have any associated federal agency involvement or funding. The lack of outlet gates and a controlled spillway design indicate potential limitations in the dam's ability to manage high discharge events, prompting the need for further risk assessment and management measures to ensure its long-term safety and functionality for water resource and climate enthusiasts in the region.