Central Dam, also known as Janesville Dam, is a hydroelectric structure located on the Rock River in Wisconsin. Built in 1927, this Timber Crib dam stands at a height of 8 feet and stretches 325 feet in length, providing critical water storage of 3,675 acre-feet and a surface area of 548 acres. The dam's primary purpose is hydroelectric power generation, with additional benefits for recreation.

Managed by the Federal Energy Regulatory Commission, the Central Dam has a controlled spillway with a width of 243 feet and is equipped with four slide (sluice) gates for water flow regulation. Despite its low hazard potential, the dam is rated as having a very high risk due to its age and condition assessment not being available. Emergency action plans have been prepared and updated periodically to ensure public safety and risk management measures are in place.

With its historical significance and vital role in water resource management and energy production, Central Dam serves as a notable structure in the region. Enthusiasts of water resources and climate will find interest in the dam's features, operational details, and the ongoing efforts to address potential risks associated with its continued use.