Dells, located in Eau Claire, Wisconsin, is a gravity dam on the Chippewa River with a primary purpose of hydroelectric power generation and recreation. Completed in 1907, this multi-arch dam stands at 51 feet tall with a hydraulic height of 43.1 feet and a structural height of 51 feet. With a dam length of 619 feet and a storage capacity of 12,100 acre-feet, Dells plays a crucial role in regulating water flow and providing renewable energy to the region.

Managed by the Federal Energy Regulatory Commission, Dells has a controlled spillway width of 396 feet and can discharge up to 170,000 cubic feet per second. Despite being classified as a low hazard potential structure, the risk assessment for Dells indicates a very high risk level (1). The emergency action plan for the dam was last revised in December 2019, and regular inspections are conducted to ensure its safe operation. Dells serves as a key asset in water resource management and climate resilience efforts in the region, showcasing the importance of sustainable hydroelectric infrastructure for both energy production and environmental conservation.