Hankins Dam, located in Eddyville, Iowa, is a privately owned earth dam designed by the USDA NRCS in 1967. The dam's primary purpose is for fire protection, stock, or small fish pond. With a height of 20 feet and a length of 320 feet, the dam has a storage capacity of 57 acre-feet and a surface area of 4.3 acres. Situated on the TR-Des Moines River, the dam is regulated by the Iowa DNR and is subject to state permitting, inspection, and enforcement.

Despite being categorized as a low hazard potential structure, Hankins Dam is considered to have a moderate risk level and is not currently rated for its condition. The dam features an uncontrolled spillway type and is constructed on soil foundation. While it does not have outlet gates or locks, it serves its community as a vital resource for fire protection and water storage. As an integral part of the local water management system, Hankins Dam plays a crucial role in safeguarding the surrounding area from potential flooding and providing essential water resources for various purposes.