Dd No 24, located in Alma, Kansas, is a local government-owned earth dam designed by Dale Steward, P.E. The dam, with a height of 36 feet and a length of 650 feet, serves the primary purpose of flood risk reduction along the West Branch Mill Creek-TR. With a storage capacity of 443.5 acre-feet and a normal storage of 58 acre-feet, the dam covers a surface area of 10.3 acres and has a drainage area of 1.29 square miles.

Despite being classified as low hazard potential and not yet rated for condition assessment, Dd No 24 presents a very high risk according to the Risk Assessment Scale. The dam features a controlled spillway with a width of 50 feet and no outlet gates. While the dam has not been modified in recent years and lacks emergency action and inundation maps, it is regulated, permitted, and inspected by the Kansas Dept. of Agriculture. As a vital infrastructure for flood mitigation in Wabaunsee County, Dd No 24 is a key component in managing water resources and climate-related risks in the region.