Little Eau Pleine - old RR right-of-way off Marsh Road to Mann/River Rd (9.3 or 3.4 mi) (WI)
Likely less than 50 cfs: almost certainly too low for reasonable whitewater run.
A great little dells provides plenty of action in a short distance.
Copy/paste the following link for a fine video of a run of this dells at 1650 cfs: