If you're driving through the "Wisconsin's waterfall capital", Marinette County, you need to stop at Dave's Falls. A small roadside county park in Amberg, WI. It's a short walk from the parking lot, so it's an easy hike. The falls are basically a narrow rapid that flows between two rock faces. If I get back in the area, I plan on re-visiting the falls along with the many others in the area. Be prepared to drive on a a lot of dirt roads.