Dd No 2-28a (Vermillion Creek) is a local government-owned earth dam situated in Marshall, Kansas, designed for flood risk reduction on the Robidoux river. Completed in 2008, this dam stands at a height of 34.5 feet and has a storage capacity of 355 acre-feet, with a normal storage level of 91.9 acre-feet. The dam has a spillway width of 40 feet and a maximum discharge capacity of 1100 cubic feet per second.

Despite being classified as having a low hazard potential, Dd No 2-28a plays a crucial role in managing flood risks in the area. The dam has not been rated for its condition assessment, and there are no emergency action plans currently in place. However, the risk assessment for this structure is moderate, indicating the importance of ongoing monitoring and maintenance to ensure its effectiveness in mitigating flood impacts. Overall, Dd No 2-28a is a key asset in the local water resource infrastructure, safeguarding the community against potential flood events on the Robidoux river.