Nash Dam, located in Monroe County, Iowa, was completed in 1959 and is owned privately. This earth dam, designed by USDA NRCS, serves multiple purposes including fire protection, stock, and small fish pond. With a height of 27 feet and a length of 499 feet, the dam has a storage capacity of 50 acre-feet and covers a surface area of 3.6 acres. It is regulated by the Iowa Department of Natural Resources and undergoes regular inspections and enforcement measures.

The dam's primary source agency is in Iowa, and it falls under the jurisdiction of the Kansas City District of the US Army Corps of Engineers. Despite being categorized as low hazard potential, Nash Dam has a moderate risk assessment rating of 3. While it currently has no Emergency Action Plan (EAP) in place, the dam meets regulatory guidelines and is considered safe for its intended purposes. The dam, situated on TR-WHIPPERWILL CREEK, plays a crucial role in water resource management and provides essential services to the local community in Marysville.

Overall, Nash Dam serves as a vital infrastructure for water resource management and conservation efforts in Iowa. With its regulated operations and inspection processes, the dam ensures the safety and security of the surrounding area while providing valuable services such as fire protection and stock water supply. As a key component of the local ecosystem, Nash Dam stands as a testament to the importance of sustainable water resource management practices in the face of changing climate conditions.