Jim Walter Dam, located in Macksburg, Iowa, is a privately owned structure designed by USDA NRCS and completed in 2018. This Earth-type dam stands at 26 feet high and spans 386 feet across, with a primary purpose of grade stabilization. With a storage capacity of 23 acre-feet, the dam serves to control flow in the tributary to Ninemile Creek, covering a drainage area of 0.07 square miles.

The dam's low hazard potential and moderate risk assessment make it a crucial asset for managing water resources in the region while also offering recreational opportunities. The dam features an uncontrolled spillway with a width of 24 feet, ensuring the safe release of excess water. Its location in Adair County, Iowa, demonstrates the collaboration between federal and state agencies in maintaining and regulating water infrastructure for the community.

Despite its relatively recent completion, Jim Walter Dam has not been rated for its condition assessment. However, its presence contributes to the overall risk management measures in place for the area. With its strategic design and purpose, the dam serves as a vital component for both environmental protection and public enjoyment, highlighting the importance of sustainable water resource management in the face of changing climates.