Yes, floating down the St. Croix National Scenic Riverway is a quintessential summer activity in the Upper Midwest. The river, which forms part of the border between Minnesota and Wisconsin, offers a gentle current and scenic "northwoods" views with very few visible buildings. Tubing is particularly popular near Danbury, Wisconsin, and within St. Croix State Park, where local outfitters provide tube rentals and shuttle services. Most floating trips last between one and three hours, depending on the water level and your launch point. It is important to note that glass containers are strictly prohibited on the river for safety reasons, and you must carry out all your own trash as there are no garbage cans along the banks. While the water is generally calm with only minor riffles, the National Park Service recommends that all tubers be able to swim, and federal law requires children under 13 to wear a life vest at all times while on the water.