Frd No 16, also known as Little Walnut Hickory WS Dam 16, is a vital structure owned and regulated by the local government in Butler, Kansas. Completed in 1966 by the USDA NRCS, this earth dam stands at a height of 29 feet and serves the primary purpose of flood risk reduction along the South Branch of the Little Walnut River. With a storage capacity of 368 acre-feet and a drainage area of 1.39 square miles, Frd No 16 plays a crucial role in managing water resources in the region.

Despite being classified as having a low hazard potential, Frd No 16 poses a moderate risk due to its age and condition not being rated. The dam features an uncontrolled spillway with a width of 40 feet and no outlet gates. Located in Leon, Kansas, this structure is subject to state regulation by the Kansas Department of Agriculture, with inspections and enforcement measures in place to ensure its safety and functionality. With a history of moderate risk assessment, Frd No 16 remains a key component in the local water resource management system, serving as a reminder of the importance of maintaining and monitoring infrastructure in the face of changing climate conditions.