Frd No 20, also known as the Big Caney Watershed Dam 20, is located in Chautauqua County, Kansas, specifically in the city of Hewins. This earth dam, designed by USDA NRCS, was completed in 1969 for the primary purpose of flood risk reduction along the Spring Branch Caney River. With a height of 43 feet and a length of 1275 feet, Frd No 20 has a maximum storage capacity of 1350 acre-feet and a normal storage of 177 acre-feet, covering a surface area of 30.9 acres and draining a 4.7 square mile area.

Managed by the Kansas Department of Agriculture, Frd No 20 is regulated, inspected, and enforced by state authorities to ensure its safety and functionality. The dam's spillway type is uncontrolled with a width of 60 feet, and it has a low hazard potential with a moderate risk assessment rating of 3. While the condition assessment is currently not rated, the dam meets state permitting and inspection requirements, providing essential flood risk reduction benefits to the local community and the surrounding area.

Overall, Frd No 20 plays a crucial role in managing flood risks along the Spring Branch Caney River, safeguarding the community of Hewins and the surrounding region from potential inundation. With its strategic location and design, this earth dam stands as a testament to effective water resource management and climate resilience efforts, highlighting the importance of sustainable infrastructure for protecting our environment and communities from the impacts of extreme weather events.