Petenwell, located in Wisconsin Dells, is a gravity dam on the Wisconsin River with a primary purpose of generating hydroelectric power. Completed in 1949, this dam stands at a height of 46 feet and has a maximum storage capacity of 530,000 acre-feet. With a surface area of 23,180 acres and a drainage area of 5,860 square miles, Petenwell plays a crucial role in flood risk reduction, hydroelectric power generation, and recreation in the region.

Managed by the Federal Energy Regulatory Commission, Petenwell has a spillway width of 480 feet and is equipped with 16 Tainter (radial) outlet gates. Despite its high hazard potential and very high risk assessment rating, the dam's condition assessment is currently not available. While the dam's emergency action plan was last revised in December 2019, there is a need for more detailed risk management measures and updated inundation maps to ensure the safety and security of the surrounding areas in the event of an emergency.

Water resource and climate enthusiasts will be fascinated by Petenwell's vital role in harnessing the power of the Wisconsin River to generate clean energy, manage flood risks, and provide recreational opportunities for the community. As a significant infrastructure project with historical significance, Petenwell serves as a reminder of the importance of sustainable water resource management and the need for comprehensive emergency preparedness in the face of potential hazards.