Frd No 15, also known as Elk River WS Joint District No 47, is a flood risk reduction structure located in Longton, Kansas. Managed by the local government, specifically the Kansas Department of Agriculture, this earth dam was designed by USDA NRCS and completed in 1978. The dam stands at a height of 50 feet and has a storage capacity of 2449.32 acre-feet, serving the primary purpose of flood risk reduction along the West Hitchen Creek.

With a low hazard potential and a moderate risk assessment rating, Frd No 15 is a crucial infrastructure for managing flood risks in the Elk County area. The dam features an uncontrolled spillway with a width of 200 feet, ensuring efficient water discharge during high flow events. While the condition assessment is currently listed as "Not Rated", regular inspections by the state regulatory agency and enforcement of safety measures contribute to the overall risk management of the structure.

Overall, Frd No 15 plays a significant role in protecting the surrounding communities from potential flooding, showcasing the collaboration between local government agencies and the USDA NRCS in safeguarding water resources in Kansas. The structure's design, construction, and operation reflect a commitment to reducing flood risks and ensuring the safety and well-being of residents in the region.