The Lighting Plant in Waupaca, Wisconsin, is a privately owned hydroelectric facility that was completed in 1927. This gravity dam stands at 25 feet high with a hydraulic height of 12 feet and a length of 300 feet. It has a storage capacity of 240 acre-feet and a maximum discharge of 5130 cubic feet per second. The dam is situated on the Waupaca River in the Chicago District, with State regulation and inspections by the WIDNR ensuring its safe operation.

Despite being classified as a low hazard potential structure with satisfactory condition assessment, the Lighting Plant poses a very high risk due to its location and potential impact in case of a failure. Emergency action plans are in place, with a 10-year inspection frequency to ensure ongoing safety and maintenance. The facility operates under State jurisdiction, with enforcement and permitting carried out by the WIDNR to uphold regulatory standards and protect the surrounding environment.

As a key contributor to the hydroelectric power generation in the region, the Lighting Plant plays a crucial role in sustainable energy production while also highlighting the importance of responsible water resource management. Its historical significance as a landmark structure in the area underscores the intersection of infrastructure development and environmental stewardship, making it a focal point for water resource and climate enthusiasts interested in the intersection of technology and nature conservation.