Kromminga Dam, located in Benton, Iowa, along the TR-Buckeye Creek, is a private-owned structure primarily used for recreation purposes. Constructed in 1970 by the USDA SCS, this Earth-type dam stands at a height of 17 feet and spans 464 feet in length. With a storage capacity of 50 acre-feet, the dam covers a surface area of 4 acres and serves a drainage area of 0.12 square miles.

Despite being classified with low hazard potential and a moderate risk assessment, Kromminga Dam is regulated, permitted, inspected, and enforced by the Iowa Department of Natural Resources. The dam's spillway is uncontrolled, and it has no outlet gates or associated structures. While its condition remains unrated, the dam's emergency action plan and risk management measures are yet to be fully assessed and updated. As a significant feature along the Iowa River, Kromminga Dam offers opportunities for outdoor recreation and water resource enthusiasts to appreciate its unique design and purpose in the region.