Massey Dam, located in Decatur County, Iowa, was completed in 1986 and serves primarily as a fire protection reservoir and small fish pond. Owned privately, this earth dam stands at a height of 28 feet with a length of 490 feet, providing a storage capacity of 120 acre-feet. The dam is state regulated by the Iowa Department of Natural Resources, receiving regular inspections and enforcement to ensure its safety and functionality.

With a low hazard potential and a moderate risk rating, Massey Dam plays a crucial role in water resource management in the area, covering a surface area of 6.4 acres and draining a 0.43 square mile watershed. Despite its small size, the dam contributes to flood control and water supply for local communities. The dam's spillway is uncontrolled, and it has not undergone any modifications since its completion, indicating its stable and reliable performance over the years.

Despite not being rated for condition assessment, Massey Dam continues to be a vital infrastructure for fire protection and water storage in the region. With its peaceful surroundings and important functions, the dam stands as a testament to the intersection of human engineering and environmental stewardship in managing water resources and climate challenges.