Dd No 128 is a local government-owned earth dam located in Neosho Rapids, Kansas, along the Taylor Creek-TR stream. Built in 1987 by Miles Engineering, this dam serves the primary purpose of flood risk reduction, with a height of 18 feet and a length of 2400 feet. The dam has a storage capacity of 290.9 acre-feet, with a normal storage of 25.7 acre-feet and a drainage area of 0.45 square miles.

With a low hazard potential and a moderate risk assessment rating, Dd No 128 is considered to be in good condition and has not been rated for its current condition. The dam features an uncontrolled spillway with a width of 47 feet and no outlet gates. While it has not been inspected recently, the dam remains operational and plays a crucial role in managing flood risks in the area. For water resource and climate enthusiasts, Dd No 128 serves as an important infrastructure for flood control and protection in Lyon County, Kansas.