Greencrest Farms Dam, located in Macksburg, Iowa, was completed in 1976 and serves multiple purposes including fire protection, stock, and small fish pond. Designed by USDA NRCS, this private-owned earth dam stands at a height of 37 feet with a length of 420 feet. It holds a storage capacity of 62 acre-feet, making it crucial for water resource management in the region.

Despite its low hazard potential, Greencrest Farms Dam is regulated by the Iowa DNR and undergoes regular inspections and enforcement. Situated on the Thompson River, this dam plays a vital role in flood control and water storage for the surrounding area. The dam's spillway is uncontrolled, and with a moderate risk assessment rating, it highlights the importance of proper management and maintenance to ensure its structural integrity and safety.

With its location in Adair County and close proximity to the Rock Island District, Greencrest Farms Dam is a significant feature in the local water resource infrastructure. As climate change continues to impact water availability and extreme weather events, the dam's role in managing water resources for fire protection and agriculture becomes increasingly crucial. As water resource and climate enthusiasts, understanding and supporting the maintenance of dams like Greencrest Farms Dam is essential for sustainable water management practices in the face of a changing climate.