Frd No 4-6, also known as Muddy Creek Watershed Dam 4 6, is a local government-owned structure located in Winfield, Kansas. Built in 1967 by the USDA NRCS, this earth-type dam serves the primary purpose of flood risk reduction along the Muddy Creek, with a hydraulic height of 45 feet and a structural height of 54 feet. The dam has a storage capacity of 10,825 acre-feet and covers a surface area of 93.1 acres, impacting a drainage area of 29.55 square miles.

With a spillway width of 400 feet and a high hazard potential, Frd No 4-6 is regulated by the Kansas Department of Agriculture and undergoes regular inspections every three years. The dam has not been rated for condition assessment, but it is categorized as having a moderate risk level. While the dam does not have any associated locks or outlet gates, it plays a critical role in managing flood risks in the region and offers recreational opportunities for the local community. As a significant water resource infrastructure in Butler County, Frd No 4-6 highlights the importance of effective dam management and climate resilience measures in safeguarding our water resources for the future.