Frd No 4-1, also known as Upper Verdigris WS Dam 4-1, is a local government-owned structure located in Chase County, Kansas. Constructed in 1971 by the USDA NRCS, this buttress dam stands at a height of 45 feet and serves the primary purpose of flood risk reduction along the No Branch Verdigris River. With a maximum storage capacity of 1160 acre-feet and a normal storage of 158 acre-feet, Frd No 4-1 plays a crucial role in managing water flow and mitigating potential flood hazards in the area.

Managed by the Kansas Department of Agriculture, this dam is regulated, permitted, and inspected by state authorities to ensure its structural integrity and operational efficiency. Despite being classified as having a low hazard potential, the condition of Frd No 4-1 is currently not rated, highlighting the need for ongoing monitoring and maintenance. With its strategic location and design, this dam stands as a valuable asset in water resource management and climate resilience efforts in the region, demonstrating the importance of sound infrastructure for safeguarding communities against natural disasters.

As part of the flood risk reduction system in the area, Frd No 4-1 plays a crucial role in protecting nearby communities from potential inundation events. With its sturdy buttress design and efficient operation, this dam serves as a critical piece of infrastructure in the overall water management strategy for the No Branch Verdigris River watershed. Moving forward, continued monitoring, assessment, and maintenance of Frd No 4-1 will be essential to ensure its long-term effectiveness in safeguarding the local area from flood risks and promoting sustainable water resource management practices.