Garrison Dam - Williston Levee, also known as Lake Sakakawea, is a federal-owned structure located in Williams, North Dakota along the Missouri River. Completed in 1953, this earth dam serves multiple purposes including flood risk reduction, hydroelectric power generation, irrigation, navigation, and recreation. With a structural height of 28 feet and a length of 44,500 feet, the dam has a normal storage capacity of 18.5 million acre-feet and a maximum storage of 26 million acre-feet, covering a surface area of 133,000 acres.

Managed by the US Army Corps of Engineers, Garrison Dam plays a critical role in mitigating flood risks in the region. To address potential hazards and manage the dam's operations, the Corps regularly inspects and maintains the structure, engages with emergency managers, and updates emergency action plans. Despite the dam's efforts to reduce flood risks, the inherent limitations of dams in storing water and responding to severe weather events underscore the ongoing need for risk management measures and public awareness regarding dam safety.

Overall, Garrison Dam - Williston Levee represents a vital infrastructure project that not only safeguards against flooding but also supports various economic and recreational activities in the area. As part of the broader network of dams along the Missouri River, this structure highlights the importance of proactive risk management, collaboration with local stakeholders, and continuous maintenance to ensure the safety and resilience of water resources in the region.