Dd No 4a, located in Peabody, Kansas, is a vital structure owned by the local government and regulated by the Kansas Department of Agriculture. Completed in 1995, this earth dam serves the primary purpose of flood risk reduction along the Doyle Creek-TR river or stream. With a height of 19.8 feet and a length of 1780 feet, Dd No 4a has a storage capacity of 743.9 acre-feet, making it a crucial asset in managing water resources in Marion County.

Despite its low hazard potential, Dd No 4a plays a significant role in debris control and flood risk reduction within the region. The dam, designed by REH & Associates, has a normal storage capacity of 94.2 acre-feet and covers a surface area of 27.7 acres. While the structure has not been rated for its condition, it falls under moderate risk assessment category (3), indicating the need for ongoing risk management measures to ensure its effective functioning in mitigating flood risks and protecting the surrounding community and environment.

Overall, Dd No 4a stands as a testament to local government efforts in water resource management and climate resilience. As a key element in the flood risk reduction strategy for Marion County, this earth dam serves as a critical infrastructure asset that requires continued monitoring and maintenance to safeguard against potential risks and ensure its long-term effectiveness in protecting the community from flooding events.