Located in Waupaca, Wisconsin, the Keller dam is a recreational structure on the South Branch Pigeon River. Built in 1938, the Earth type dam stands at 22.3 feet high and spans 140 feet in length. It has a storage capacity of 400 acre-feet and a normal storage level of 90 acre-feet, serving as a popular spot for outdoor activities in the region.

Managed by the local government, Keller dam is regulated by the Wisconsin Department of Natural Resources, with regular inspections and enforcement measures in place to ensure its safety and functionality. Despite being classified as low hazard potential and in fair condition, a moderate risk assessment indicates the need for ongoing risk management measures. The dam's spillway, with a width of 78 feet, is uncontrolled, allowing for a maximum discharge of 1150 cubic feet per second.

With its historical significance and role in providing recreational opportunities, Keller dam remains a valuable asset in the water resource management of the area. Enthusiasts interested in water infrastructure and climate resilience will find the structure's design, purpose, and maintenance details intriguing, highlighting the intersection of human use and natural conservation efforts in the region.