Located in Marion, Iowa, the Knoxville Pond Dam is a local government-owned structure designed by Garden Engineering Services. Completed in 1961, this earth dam serves primarily for recreational purposes, with a height of 31 feet and a length of 375 feet. Situated along the TR-Whitebreast Creek within the Red Rock Reservoir area, the dam has a storage capacity of 115 acre-feet and a surface area of 7.7 acres.

Managed by the Iowa Department of Natural Resources, the Knoxville Pond Dam is regulated, inspected, and enforced by state authorities to ensure its safety and compliance with regulations. With a low hazard potential and a moderate risk assessment rating, the dam is considered to be in fair condition, although it has not been recently assessed for its current state. Despite its uncontrolled spillway type, the dam poses minimal risk to surrounding areas and is not currently equipped with emergency action plans or inundation maps.

Water resource and climate enthusiasts may find the Knoxville Pond Dam to be an interesting site for its historical significance and recreational value within the local community. While its primary purpose is for leisure activities, the dam's design and construction reflect the importance of water management in the region. As efforts continue to maintain and monitor the dam's integrity, it serves as a reminder of the crucial role that infrastructure plays in preserving water resources and mitigating potential risks associated with dam structures.