Charles City Milldam, located in Floyd County, Iowa, along the Cedar River, is a gravity dam primarily used for recreation. Built in 1945, this dam stands at a height of 10 feet and spans 236 feet in length, with a maximum storage capacity of 606 acre-feet and a surface area of 120 acres. Despite its low hazard potential and moderate risk assessment rating, the dam's condition remains unrated as of the last inspection in 1999.

Managed by the local government and regulated by the Iowa Department of Natural Resources, Charles City Milldam serves as a popular spot for outdoor enthusiasts seeking recreational activities. Although the dam lacks designated outlet gates and spillways, its uncontrolled spillway type poses minimal risk to surrounding areas. With a drainage area of 1054 square miles, this dam plays a crucial role in water resource management and environmental conservation efforts within the region.

For water resource and climate enthusiasts, Charles City Milldam offers a unique opportunity to explore the intersection of human infrastructure and natural ecosystems. As a focal point for outdoor recreation, this dam showcases the balance between human enjoyment and environmental stewardship in sustainable water management practices. Despite its age, the dam continues to serve as a valuable resource for the community, highlighting the importance of ongoing inspection and maintenance to ensure its safety and longevity in the face of changing climate conditions.