Dunham Dam, located in Dunlap, Iowa, was completed in 1970 by the USDA NRCS and serves multiple purposes including fire protection, stock, and small fish pond. This private dam is regulated by the Iowa Department of Natural Resources and is inspected, permitted, and enforced by the state. The dam is an earth-type structure with a height of 58 feet and a length of 660 feet, providing a storage capacity of 82 acre-feet and covering a surface area of 9 acres. The dam is situated on the TR-Boyer River and is part of the Rock Island District.

Despite being classified as having a low hazard potential, Dunham Dam is considered to have a moderate risk level. The condition assessment for the dam is currently not rated, and there is no emergency action plan in place. However, the dam does meet state guidelines for inspection and enforcement. The dam's primary purpose is to provide essential services such as fire protection and water storage for livestock, while also serving as a small fish pond. With its strategic location and design, Dunham Dam plays a crucial role in water resource management in Crawford County, Iowa.