Dd No 117 is a flood risk reduction structure located in Miller, Kansas, along Elm Creek-TR. Owned by the local government and regulated by the Kansas Dept. of Agriculture, this earth dam stands at a height of 30 feet and stretches 800 feet in length. Completed in 1989, it serves the primary purpose of flood risk reduction and has a normal storage capacity of 24 acre-feet with a maximum discharge of 1980 cubic feet per second.

With a low hazard potential and a moderate risk assessment rating, Dd No 117 is an essential infrastructure for managing water resources in Lyon County, Kansas. Despite not having a condition assessment rating, this structure remains crucial for protecting the surrounding area from potential flooding events. The dam's uncontrolled spillway, with a width of 70 feet, helps to manage excess water flow and mitigate flood risks in the region.

Water resource and climate enthusiasts can appreciate the engineering behind Dd No 117, designed by Miles Engineering to serve as a vital flood risk reduction asset in the area. With its strategic location and functional design, this dam plays a key role in safeguarding the community and surrounding lands from the impacts of extreme weather events. As a regulated and inspected structure, Dd No 117 continues to fulfill its purpose of protecting against flooding and managing water flow in the region.