Dd No 11, located in Lake Wabaunsee, Kansas, is a local government-owned earth dam designed by Dale Steward, P.E. The dam was completed in 1997 with a primary purpose of flood risk reduction. It stands at a height of 44 feet and spans 800 feet in length, providing a storage capacity of 730.1 acre-feet. The dam is regulated by the Kansas Department of Agriculture and has been inspected for safety and enforcement measures.

With a low hazard potential and fair condition assessment, Dd No 11 poses a moderate risk of flooding, as indicated by its moderate risk assessment rating. The dam has a controlled spillway width of 80 feet and a maximum discharge capacity of 5,860 cubic feet per second. Despite its low hazard potential, the dam plays a crucial role in debris control and flood risk reduction efforts in the area, protecting the surrounding community from potential water-related disasters.

Overall, Dd No 11 serves as a vital infrastructure for managing water resources in Wabaunsee County, Kansas. Its strategic location on the East Branch Mill Creek-TR contributes to the overall flood risk reduction strategy in the region. With its sturdy construction and regulatory oversight, the dam continues to play a significant role in safeguarding the local community from the impacts of extreme weather events and ensuring the sustainable management of water resources in the area.