Frd No 46, also known as Elk River WS Joint District No 47, is a flood risk reduction dam located in Elk Falls, Kansas. Constructed in 1976 by the USDA NRCS, this earth dam stands at a height of 70 feet and has a hydraulic height of 63 feet. With a storage capacity of 7084.66 acre-feet and a normal storage of 855 acre-feet, Frd No 46 plays a crucial role in managing the flood risk along the Mound Branch Elk River.

Managed by the Kansas Department of Agriculture, Frd No 46 is regulated, permitted, inspected, and enforced by the state to ensure its proper functioning and safety. While the dam has a low hazard potential, it is categorized as having a moderate risk level (3), highlighting the importance of ongoing risk assessment and management measures. Despite not being rated for condition assessment, Frd No 46 continues to serve its primary purpose of flood risk reduction for the surrounding area, showcasing the collaboration between local government agencies and federal entities like the Natural Resources Conservation Service in safeguarding water resources and climate resilience in Elk County, Kansas.