Dingeman Dam, located in Marion, Iowa, is a privately owned structure designed by the USDA NRCS and regulated by the Iowa DNR. Completed in 1970, this earth dam stands at a height of 27 feet and spans 342 feet in length, providing fire protection and serving as a small fish pond. With a storage capacity of 40 acre-feet and a surface area of 2.8 acres, the dam plays a crucial role in managing water resources in the area.

Constructed on the TR-DES MOINES RIVER in the RED ROCK RESERVOIR area, Dingeman Dam is equipped with an uncontrolled spillway and has a low hazard potential. The dam is currently rated as being in "Not Rated" condition, with moderate risk identified. While the dam does not have outlet gates, locks, or associated structures, it remains a key component in the local water management system. As a hub for water resource and climate enthusiasts, Dingeman Dam offers a glimpse into the intersection of infrastructure, conservation, and environmental stewardship in Iowa.

Despite its simple design and primary purpose, Dingeman Dam serves as a vital component of the local ecosystem, providing essential water storage and fire protection capabilities. While it may not be as well-known as other dams in the region, Dingeman Dam's role in water management and conservation efforts cannot be understated. With a focus on safety and sustainability, this unassuming earth dam continues to play a crucial role in protecting the surrounding area from potential risks and ensuring a reliable water supply for the community.