Rathbun Dam, also known as Rathbun Lake, is a federal-owned structure located in Appanoose County, Iowa. Completed in 1972 by the US Army Corps of Engineers, the dam serves as a crucial flood risk reduction measure along the Chariton River. With a structural height of 100 feet and a hydraulic height of 92 feet, Rathbun Dam has a storage capacity of 552,000 acre-feet and covers a surface area of 11,013 acres.

The dam's primary purposes include flood risk reduction, as well as providing opportunities for fish and wildlife ponds, navigation, and recreation. Despite its high hazard potential, Rathbun Dam is equipped with risk management measures implemented by the US Army Corps of Engineers. These measures include regular monitoring, maintenance, and engagement with local emergency managers to ensure the dam's structural integrity and readiness for potential emergencies.

Rathbun Dam plays a vital role in managing water levels and mitigating flood risks in the region. With its extensive storage capacity and risk management protocols in place, the dam serves as an essential infrastructure for water resource and climate enthusiasts to study and appreciate the complex interactions between water management, environmental conservation, and public safety.