Wausau Whitewater Park runs through a side channel of the Wisconsin River in downtown Wausau, below the dam, packing about 45 feet of gradient into roughly a third of a mile. The course is built hardest-to-easiest, Class I through III+, with the tricky cross-currents of "Diagonal" rapid as the main test piece, and surfable waves and holes tucked into several of the drops. There's no natural flow here—nothing runs except on scheduled release weekends about once a month—and this is primarily a competition course for kayakers and SUP paddlers. Surfing happens, but locals say you basically have to talk management into letting you in the water.