Situated in Waupaca, Wisconsin, the Iola dam stands as a significant water resource managed by the local government for recreational purposes. Completed in 1865, this gravity dam on the South Branch Little Wolf River boasts a height of 12 feet and a length of 694 feet, providing a storage capacity of 1000 acre-feet and a normal storage level of 638 acre-feet. With a surface area of 206 acres and a drainage area of 100 square miles, the dam has a maximum discharge capacity of 810 cubic feet per second.

Despite its fair condition assessment as of May 2020, the Iola dam poses a significant hazard potential, leading to a very high risk assessment rating of 1. The dam's inspection frequency of every 3 years ensures its ongoing maintenance and safety compliance. With state regulation, permitting, inspection, and enforcement in place by the Wisconsin Department of Natural Resources, the dam remains a vital structure for both water resource management and recreational activities in the region.

Notably, the Iola dam has undergone modifications in 1947 and 2013, indicating a commitment to its structural integrity and functionality. With a controlled spillway and a designated emergency action plan, the dam's risk management measures are designed to mitigate potential threats and safeguard the surrounding community. As climate change continues to impact water resources, the Iola dam stands as a crucial infrastructure for both environmental sustainability and public safety in the face of evolving hydrological challenges.