Dudley Dam, located in Rathbun Reservoir, Iowa, is a privately owned structure designed by the USDA NRCS with a primary purpose of fire protection, stock, or small fish pond. Completed in 1989, the earth dam stands at a height of 28 feet and spans 400 feet in length. With a storage capacity of 123 acre-feet and a surface area of 7 acres, the dam serves the surrounding area by regulating the flow of the TR-Chariton River.

Despite its low hazard potential and moderate risk assessment, Dudley Dam is regulated, permitted, inspected, and enforced by the Iowa Department of Natural Resources. The dam's spillway type is uncontrolled, and it has not been rated for its condition assessment. With its strategic location and critical role in water resource management, Dudley Dam is a key component in the region's infrastructure for water storage and conservation. For water resource and climate enthusiasts, Dudley Dam offers a fascinating example of how human-made structures can effectively manage water resources while minimizing environmental impact.