Adel Milldam, located on the North Raccoon River in Adel, Iowa, is a gravity dam completed in 1927 primarily for water supply purposes. Managed by the local government, this dam stands at a height of 15 feet and spans a length of 252 feet, with a storage capacity of 1,448 acre-feet. The dam's low hazard potential and moderate risk assessment make it a crucial asset for water resource management in the region.

Owned and regulated by the Iowa Department of Natural Resources, Adel Milldam plays a vital role in ensuring water supply and regulation in the area. With a surface area of 170 acres and serving a drainage area of 2,281 square miles, this dam is essential for maintaining the ecological balance of the North Raccoon River and surrounding areas. Although the dam's condition assessment is currently not rated, its strategic location and design contribute significantly to water resource conservation efforts.

Despite its age, Adel Milldam continues to operate effectively, meeting state permitting, inspection, and enforcement requirements. With its uncontrolled spillway and soil foundation, this structure reflects a blend of traditional engineering and modern regulatory standards. As climate change impacts water resources, the significance of dams like Adel Milldam only grows, highlighting the need for sustainable water management practices and investments in infrastructure to address evolving environmental challenges.