Big Falls Milldam, located in Big Falls, Wisconsin, is a historic gravity dam that was completed in 1926 for the primary purpose of hydroelectric power generation. With a height of 15 feet and a hydraulic height of 30 feet, the dam plays a crucial role in harnessing the power of the Little Wolf River to produce electricity. The controlled spillway and Tainter (radial) outlet gates ensure efficient water flow and management, with a maximum discharge capacity of 3,600 cubic feet per second.

Despite being privately owned, the Big Falls Milldam is subject to federal regulation by the Federal Energy Regulatory Commission (FERC). The dam has a low hazard potential, but a very high risk assessment rating of 1 due to its age and the potential impact of a dam breach on the surrounding area. While the condition assessment of the dam is currently not available, it is important for water resource and climate enthusiasts to monitor and advocate for the maintenance and safety of this historic structure to ensure its continued functionality and environmental impact in the region.