Ferguson Dam, located in Polk County, Iowa, is a privately owned structure that serves multiple purposes including fire protection and as a small fish pond. Completed in 1967, this earth dam stands at a height of 25 feet and spans a length of 400 feet. With a storage capacity of 96 acre-feet, the dam primarily holds a normal storage of 45 acre-feet and covers a surface area of 6 acres, serving as a vital resource in the region.

Managed and regulated by the Iowa Department of Natural Resources, Ferguson Dam has a low hazard potential and a moderate risk assessment rating. While the condition of the dam is currently not rated, regular inspections, permitting, and enforcement by state authorities ensure its safety and compliance with regulations. Despite being uncontrolled, the dam's spillway type and design contribute to mitigating potential risks and maintaining its functionality within the Des Moines River watershed.

Water resource and climate enthusiasts can appreciate Ferguson Dam for its role in water management, conservation, and supporting local ecosystems. With its strategic location in the Red Rock Reservoir area and its contribution to the overall hydrology of the region, Ferguson Dam stands as a testament to the importance of sustainable dam infrastructure in balancing the needs of both human and natural communities in Iowa.