Dd No 203, located in Lyon County, Kansas, is a local government-owned earth dam that was completed in 1988 for flood risk reduction along Bluff Creek-TR. With a height of 34.7 feet and a length of 1030 feet, this structure has a normal storage capacity of 86.5 acre-feet and a maximum storage of 500 acre-feet. Although the dam is classified as having a low hazard potential, it has a moderate risk assessment rating of 3.

Maintained by the Kansas Department of Agriculture, Dd No 203 is regularly inspected, permitted, and enforced for compliance with state regulations. It is equipped with an uncontrolled spillway and lacks outlet gates. The dam's condition assessment is currently not rated, and it does not have an updated emergency action plan. Despite these limitations, the structure serves as a crucial asset for flood risk management in the region.

In the event of a flood emergency, Dd No 203 in Dunlap, Kansas, is overseen by local government authorities and the Kansas Department of Agriculture. With its strategic location in the Kansas City District and a history of serving its intended purpose effectively, this earth dam plays a vital role in protecting the surrounding community from potential flooding events along Bluff Creek-TR.