Don Williams Lake Dam, located in Boone, Iowa, serves as a crucial water resource with a primary purpose of recreation. Completed in 1965, this earth dam stands at 58 feet high and stretches 600 feet in length, creating a reservoir with a storage capacity of 4,680 acre-feet. The dam overlooks Bluff Creek and is regulated by the Iowa Department of Natural Resources, ensuring its safety and functionality for the surrounding community.

With a significant hazard potential but a satisfactory condition assessment as of July 2017, the dam is subject to regular inspections every five years to ensure its structural integrity. The dam features an uncontrolled spillway with a width of 60 feet, allowing for controlled release of excess water during periods of high flow. Despite its moderate risk assessment level, the dam's risk management measures and emergency action plan readiness remain unspecified, highlighting the importance of ongoing monitoring and maintenance to safeguard the dam and surrounding areas from potential hazards. For water resource and climate enthusiasts, Don Williams Lake Dam stands as a vital structure in the region, balancing the needs of recreation and water management in a sustainable manner.