Marion County Roadgrade Dam, located in Harvey, Iowa, is a local government-owned structure on the TR-Des Moines River. Built in 1965, this earth dam stands at 37 feet tall and stretches 700 feet in length, with a storage capacity of 87 acre-feet. The dam serves a primary purpose of "Other" and has a low hazard potential, with a moderate risk assessment rating of 3.

Managed and regulated by the Iowa Department of Natural Resources, Marion County Roadgrade Dam is inspected and maintained to ensure its structural integrity and safety. While it has not been rated for condition assessment, the dam has not undergone any modifications since its completion. With a surface area of 4.7 acres and a drainage area of 0.19 square miles, this dam plays a crucial role in managing water resources in Marion County and mitigating flood risks along the TR-Des Moines River.

For water resource and climate enthusiasts, Marion County Roadgrade Dam presents an intriguing case study in dam management and environmental stewardship. As a vital part of the local infrastructure, this dam highlights the importance of maintaining and monitoring our water resources to ensure the safety and well-being of surrounding communities. With its historical significance and ongoing regulatory oversight, Marion County Roadgrade Dam serves as a compelling example of how human intervention can both protect and impact our natural environment.