We also learned some new things about erosion and sluice ways. I never knew what a sluice way was; its a man made waterway path made for logs to travel from one place to another. Right within Lake Bemidji State Park there's an old sluice way that is believed to have been used to transport logs from a smaller lake to the mill on lake Bemidji. The Bemidji area was/is a huge logging area.