Hudnutt Dam, located in Union Mills, Iowa, is a privately owned structure designed by the NRCS for fire protection, stock, or small fish pond purposes. Completed in 2002, this earth dam stands at a height of 22 feet and stretches 330 feet in length, with a storage capacity of 57 acre-feet. Situated on TR-Sugar Creek, the dam serves as a crucial resource for the surrounding area, boasting a surface area of 4.3 acres and a drainage area of 0.29 square miles.

Despite its low hazard potential, Hudnutt Dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its structural integrity. The dam features an uncontrolled spillway with a width of 1 foot, providing a safety measure in case of excessive water flow. With a moderate risk assessment rating of 3, the dam is equipped to handle potential emergencies, although its condition is currently listed as "Not Rated." The dam's strategic location and purpose make it a valuable asset for water resource management and climate resilience efforts in the region.