Dd No 104 is a flood risk reduction dam located in Lyon County, Kansas, along Elm Creek. Built in 1997 by DP Engineers, this earth dam stands at 27 feet tall and stretches 700 feet in length, with a storage capacity of 451.3 acre-feet. Despite being deemed as low hazard potential, the dam serves a vital role in protecting the surrounding area from potential flooding events.

Managed by the Kansas Department of Agriculture, Dd No 104 is state regulated and regularly inspected for safety and compliance. With a moderate risk assessment rating, the dam is equipped with an uncontrolled spillway and has a normal storage capacity of 47.09 acre-feet. Although the dam is not rated in terms of condition assessment, it serves as a crucial infrastructure for flood control and management in the region.

Situated within the Tulsa District of the US Army Corps of Engineers, Dd No 104 plays a key role in mitigating flood risks and ensuring the safety of local communities. With its strategic location and purposeful design, this dam stands as a testament to effective water resource management and climate resilience efforts in the state of Kansas.