in fact that line never meets the river since the river's source is further south. perfect for the summer (if we had one!). call 513-381-3410 with questions. unfortunately, some risk factors are frequently unknown. one of the most prominent features of the tumbler was the 4 large wheels in the back. if you want to be closer to the city and culture, this is the place. they require additional support that we can provide through our wide range of dedicated thoughtful services. tie a bead or two to the bottom to give a little weight. 