Appanoose County Roadgrade, located in Coal City, Iowa, is a vital infrastructure owned and regulated by the local government. This structure, designed by the Appanoose County Engineer, serves a primary purpose of 'Other' and is a crucial part of the state's regulatory system, with permitting, inspection, and enforcement all conducted by the Iowa Department of Natural Resources. Completed in 1988, the earth dam stands at a height of 24 feet and has a length of 350 feet, providing a storage capacity of 67 acre-feet and covering a surface area of 2.1 acres.

The Appanoose County Roadgrade dam, situated on the TR-Chariton River, plays a significant role in managing water resources in the area, with a low hazard potential and a moderate risk assessment rating. Despite not having a current condition assessment, the structure meets state guidelines and is equipped to handle emergency situations. With its uncontrolled spillway type and soil foundation, the dam serves as a vital component of the local water infrastructure, contributing to flood control and water management efforts in the region.

As part of the Rock Island District, the Appanoose County Roadgrade dam has been a key feature in the Iowa landscape for over three decades. With its historic significance and ongoing role in water resource management, this structure stands as a testament to the importance of sustainable infrastructure development and climate resilience in the face of changing environmental conditions. Its critical functions and regulatory oversight make it a key point of interest for water resource and climate enthusiasts alike.