Oak Lake Dam, located in Kossuth County, Iowa, is a privately owned structure that serves primarily for recreational purposes. Built in 1971, this earth dam stands at a height of 50 feet and spans 1260 feet in length, with a storage capacity of 2015 acre-feet. Situated on the TR-East Fork Des Moines River, this dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition.

Despite its significant hazard potential, Oak Lake Dam has been assessed as having a moderate risk level. With a spillway width of 20 feet and uncontrolled spillway type, the dam presents a moderate level of risk to the surrounding area. Emergency action plans and risk management measures are yet to be fully documented, indicating a need for further preparedness in the event of potential hazards. Overall, Oak Lake Dam stands as a notable feature in the water resource landscape of Iowa, attracting enthusiasts interested in both its engineering design and recreational offerings.