Dd No Iii-1, located in Bourbon County, Kansas, is a locally-owned earth dam designed by Agricultural Eng. Assoc. with a primary purpose of flood risk reduction. Completed in 1994, this dam stands at a height of 29 feet and has a storage capacity of 931.25 acre-feet, serving a drainage area of 1.69 square miles along the Little Mill Creek-TR river/stream. With a spillway width of 120 feet and a maximum discharge capacity of 4750 cubic feet per second, Dd No Iii-1 plays a crucial role in managing floodwaters in the area.

While the dam's hazard potential is deemed significant, its condition assessment is rated as fair, with a moderate risk level of 3. Regular inspections, conducted every 5 years, ensure its structural integrity and effectiveness in flood control. The dam does not feature outlet gates or associated structures, indicating a simple yet vital role in safeguarding the surrounding communities from potential flooding events. With state-regulated oversight from the Kansas Department of Agriculture, Dd No Iii-1 remains an essential asset in the region's water resource and climate management efforts.