Frd No 26, also known as Upper Walnut WS Joint District No 33, is a local government-owned structure located in Butler County, Kansas, along Bemis Creek. Built in 1977 by USDA NRCS, this earth dam stands at a height of 34 feet and serves the primary purpose of flood risk reduction. With a storage capacity of 1702.39 acre-feet and a normal storage level of 99 feet, this dam plays a crucial role in managing water flow in the area.

Although classified as having low hazard potential, Frd No 26 is regulated by the Kansas Department of Agriculture and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and compliance with state regulations. With a moderate risk assessment rating of 3, this dam is equipped with an uncontrolled spillway and has a surface area of 25.21 acres, serving a drainage area of 4.67 square miles. Despite not having outlet gates, this structure plays a vital role in mitigating flood risks and protecting the surrounding communities.

As an essential component of flood risk management in the region, Frd No 26 stands as a testament to effective water resource infrastructure. With its strategic location and design, this dam serves as a critical line of defense against potential flooding events, showcasing the importance of sustainable water management practices in the face of changing climate patterns.