Dd No D-55 is a flood risk reduction dam located in Jefferson County, Kansas, along the Cedar Creek-TR stream. Owned by the local government and regulated by the Kansas Department of Agriculture, this earth dam stands at a height of 32 feet and spans 900 feet in length. With a storage capacity of 583.7 acre-feet, it serves the primary purpose of mitigating flood risks in the area.

Although classified as having a low hazard potential, Dd No D-55 is considered to have a moderate risk level. Despite not being rated for its condition assessment, the dam is inspected regularly, with the last inspection conducted in February 2000. With an uncontrolled spillway and no outlet gates, the dam's emergency action plan status and risk management measures are currently unknown.

Enthusiasts of water resource management and climate adaptation will find Dd No D-55 to be an intriguing case study in local government ownership and state regulation of critical infrastructure. The dam's location, design characteristics, and risk profile offer valuable insights into the challenges and opportunities associated with managing water resources in the face of changing climate conditions. Its presence along the Cedar Creek-TR stream underscores the importance of proactive flood risk reduction measures in safeguarding communities and ecosystems in Kansas.