Combined Locks in Kaukauna, Wisconsin is a hydroelectric dam on the Fox River, serving primarily for flood risk reduction and hydroelectric power generation. This gravity-type dam stands at a height of 23.1 feet and has a hydraulic height of 22 feet, with a structural height of 28 feet. Completed in 1912, the dam has a storage capacity of 1700 acre-feet, with a normal storage level of 1600 acre-feet and a maximum discharge rate of 20800 cubic feet per second. With a significant hazard potential, the dam is regulated by the Federal Energy Regulatory Commission and does not fall under state jurisdiction.

The dam features a multi-arch core with a concrete and gravity structure resting on rock foundation. It spans a length of 653 feet and has a spillway width of 288 feet, operating with uncontrolled spillway type. The outlet gates consist of seven Tainter (radial) gates, facilitating water flow management. While the condition assessment is not available, the dam is subject to moderate risk with a risk assessment rating of 3. Emergency action plans are in place, last revised in January 2021, to ensure preparedness in case of unforeseen events. With its historical significance and operational relevance in water resource management, Combined Locks remains a key infrastructure for sustaining the surrounding ecosystem and local community.