Frd No Gs-18, also known as Walnut Creek Watershed Dam Gs 18, is a local government-owned structure located in Padonia, Kansas. Designed by the USDA NRCS, this earth-type dam stands at a height of 30 feet and has a structural height of 30 feet. Completed in 1963, it serves the primary purpose of flood risk reduction and has a normal storage capacity of 38 acre-feet.

Situated in the Rock Island District and regulated by the Kansas Department of Agriculture, Frd No Gs-18 has a low hazard potential and is classified as having a moderate risk level. Despite not being rated for its condition, this dam has not been modified since its completion. It is equipped with an uncontrolled spillway, 100 feet in width, and has no outlet gates. While the last inspection took place in 2008, the structure's inspection frequency is not specified.

With a drainage area of 0.82 square miles and a maximum discharge of 730 cubic feet per second, Frd No Gs-18 plays a crucial role in managing water resources in the area. Its presence highlights the collaborative efforts between federal, state, and local agencies in ensuring the safety and effectiveness of water infrastructure for flood control and environmental preservation in Kansas.