Dory Dam in Afton, Iowa is a privately owned structure that serves multiple purposes including fire protection, stock containment, and small fish pond management. Completed in 1985, this earth dam stands at a height of 22 feet and spans a length of 460 feet, with a storage capacity of 82 acre-feet. Situated on the TR-Twelvemile Creek, the dam is regulated by the Iowa Department of Natural Resources and is inspected regularly to ensure its safety and compliance with state regulations.

Despite its low hazard potential, Dory Dam poses a moderate risk due to its location and design characteristics. The dam lacks an engineered spillway and has not been modified since its construction. While its condition is currently not rated, the dam is monitored closely for any potential risks or issues that may arise. With a surface area of 3.7 acres and a drainage area of 0.39 square miles, Dory Dam plays a crucial role in water resource management and environmental conservation efforts in Union County, Iowa.

Water resource and climate enthusiasts are drawn to Dory Dam not only for its structural design and engineering aspects but also for its importance in supporting local ecosystems and providing essential services to the community. As a regulated and inspected facility, Dory Dam exemplifies the intersection of human development and environmental stewardship, highlighting the need for sustainable management practices in ensuring the longevity and safety of water infrastructure in the region.