Frd No 9, also known as Lyon Creek WS Joint District No 41, is a flood risk reduction structure located in Lyona, Kansas. Constructed in 1978 by the USDA NRCS, this earth dam stands at a height of 24 feet and has a hydraulic height of 20 feet. With a storage capacity of 492.79 acre-feet and a normal storage of 26 acre-feet, it serves the primary purpose of flood risk reduction for the local community.

Managed by the Kansas Department of Agriculture, Frd No 9 is regulated, permitted, inspected, and enforced to ensure its safety and functionality. The dam has a low hazard potential and has not been rated for condition assessment. Despite its moderate risk level, the structure does not currently have an Emergency Action Plan in place. With a spillway width of 60 feet and an uncontrolled spillway type, Frd No 9 plays a crucial role in managing water flow and protecting the surrounding area from potential flooding events.

Located in Morris County, Kansas, Frd No 9 is a key component in the water resource infrastructure of the region. With its strategic design and construction, this dam contributes to the overall resilience of the community against flood risks and underscores the importance of proactive water resource management in mitigating climate-related challenges.