Maxwell Dam, located in Union County, Iowa, is a privately owned structure designed by the USDA NRCS and regulated by the Iowa Department of Natural Resources. Completed in 1983, this earth dam stands at a height of 21 feet and has a length of 460 feet, with a primary purpose of providing fire protection and serving as a small fish pond. The dam has a storage capacity of 73 acre-feet, with a surface area of 4.9 acres and a drainage area of 0.36 square miles.

This low hazard dam on Two Mile Creek features an uncontrolled spillway and has a moderate risk assessment rating. Despite not being rated for its condition, the dam is inspected by state regulatory agencies and meets all necessary safety and enforcement guidelines. While an emergency action plan and inundation maps have not been prepared for this structure, it is reassuring to know that Maxwell Dam has been constructed and managed in a way that prioritizes the safety of nearby residents and the surrounding environment. For water resource and climate enthusiasts, Maxwell Dam serves as an example of responsible dam ownership and management in the state of Iowa.