Dukes Dam, located in Patterson, Iowa, is a privately owned structure regulated by the Iowa Department of Natural Resources. Built in 2002 by the NRCS, this earth dam stands at a height of 24 feet and spans 491 feet in length. With a storage capacity of 80 acre-feet and a surface area of 6.9 acres, Dukes Dam serves as a key component in managing water resources in the region.

The dam's primary purpose is not specified, but it is designed to handle a maximum discharge of 0 cubic feet per second with an uncontrolled spillway. Despite its low hazard potential, the dam has a moderate risk assessment rating of 3. While the condition assessment is not rated, the dam has not been inspected recently and its emergency action plan status is unclear. With its location on Tr- Middle River and under the jurisdiction of the Kansas City District, Dukes Dam plays a crucial role in water management and flood control efforts in Adair County.

Overall, Dukes Dam is a significant infrastructure for water resource management in Iowa, providing storage and flood control benefits for the surrounding area. As a privately owned structure with state regulation and inspection, the dam ensures the safety and security of local residents while also contributing to the overall resilience against climate variability and extreme weather events. Its design and construction by the NRCS reflect a commitment to sustainable water management practices, making Dukes Dam a key asset in the region's efforts to adapt to a changing climate.