Located in Rush County, Kansas, Dd No 111, also known as Wet Walnut Watershed Dam 111, was completed in 1973 by the USDA NRCS. This buttress dam stands at a height of 20 feet and has a maximum storage capacity of 118 acre-feet, primarily serving the purpose of flood risk reduction along Walnut Creek. With a low hazard potential and no state regulation, this dam plays a crucial role in mitigating potential flooding risks in the area.

The dam spans 840 feet in length and has a spillway width of 130 feet, with a maximum discharge capacity of 610 cubic feet per second. Despite its age, Dd No 111 has not been formally rated for its condition assessment, but its emergency action plan status and risk management measures are currently unreported. As a local government-owned structure in the city of Timken, this dam serves as a vital asset in safeguarding the local community against potential flooding events, showcasing the importance of water resource management in the region.

As an integral part of the flood risk reduction infrastructure in Rush County, Dd No 111 remains a key component in the watershed's overall resilience to extreme weather events. With its strategic location along Walnut Creek and its significant storage capacity, this dam is a testament to the collaborative efforts between federal agencies, local governments, and design experts in ensuring the safety and well-being of residents in the area.