Dd No D-26 (Ratliff) is a dam located in Anderson County, Kansas, designed by the USDA NRCS and completed in 1976 for the primary purpose of flood risk reduction along the Thomas Creek-TR. This earth dam stands at a height of 22 feet with a hydraulic height of 19 feet and a structural height of 23 feet, providing a maximum storage capacity of 288 acre-feet and a normal storage of 84 acre-feet. With a low hazard potential and a moderate risk assessment rating of 3, this dam plays a crucial role in protecting the surrounding area from potential flooding events.

Managed by the local government, Dd No D-26 is regulated, inspected, and enforced by the Kansas Department of Agriculture, ensuring its structural integrity and safety. The dam features an uncontrolled spillway with a width of 115 feet and is situated in a drainage area of 0.57 square miles. Although the condition assessment is currently listed as "not rated", the dam's risk management measures and emergency action plan status are not specified. Despite these uncertainties, its strategic location and design make Dd No D-26 a vital infrastructure for mitigating flood risks in the region.

As a part of the flood risk reduction system, Dd No D-26 serves as a protective barrier against potential inundation events, with a design that reflects the collaborative efforts of the Natural Resources Conservation Service and local authorities in safeguarding the community. With its location in Lane, Kansas, this dam stands as a testament to the importance of water resource management and climate resilience in mitigating the impacts of extreme weather events.