St. Anthony Falls Lower Lock and Dam, located in Minneapolis, Minnesota, is a vital structure on the Mississippi River, serving primarily for navigation purposes. Completed in 1956, this concrete dam stands at a height of 41 feet with a hydraulic height of 39 feet and a structural height of 58 feet. The dam's length spans 213 feet and includes a single lock measuring 400 feet in length and 56 feet in width. Managed by the US Army Corps of Engineers, the dam has a significant hazard potential and a very high risk assessment rating, emphasizing the importance of ongoing monitoring and risk management measures.

The dam's purpose extends beyond navigation to include recreation, making it a key resource for water enthusiasts in the area. With a storage capacity of 420 acre-feet and a maximum discharge rate of 91,000 cubic feet per second, the dam plays a crucial role in managing water levels and preventing flooding in the region. The USACE works diligently to address various flood risks associated with the dam, regularly updating emergency action plans, conducting maintenance and repairs, and collaborating with local emergency managers to raise awareness and support preparedness efforts. As climate change continues to impact water resources, the St. Anthony Falls Lower Lock and Dam remains a critical infrastructure for both navigation and flood control on the Mississippi River.