Mayfield Dam, located in Medora, Iowa, was completed in 1997 and is owned privately. The dam, designed by USDA NRCS, serves primarily for fire protection, stock, or as a small fish pond. With a dam height of 31 feet and a length of 465 feet, it has a storage capacity of 123 acre-feet and covers a surface area of 7.8 acres. The dam is situated on TR-Squaw Creek and is regulated by the Iowa Department of Natural Resources.

Despite being classified as having a low hazard potential, Mayfield Dam is considered to have a moderate risk level according to the data. The dam has an uncontrolled spillway type and is not currently rated for its condition. It is subject to state regulation, inspection, and enforcement, ensuring its safety and compliance with standards. Overall, Mayfield Dam serves as a vital resource for water management and protection in the Clarke County area.

Water resource and climate enthusiasts will find Mayfield Dam's structural details and purpose intriguing, as it not only provides essential functions like fire protection and stock water but also contributes to the local ecosystem. The dam's presence on TR-Squaw Creek, its moderate risk level, and state regulation highlight the importance of proper management and maintenance of water infrastructure for sustainable use and environmental protection in the region.