“The problem with being lost on the river was that things appeared different facing south from the way they did looking north. It was as if there were two different bodies of water. The Mississippi, in fact, seemed like many different rivers. The level was always rising or falling. Sediment got pushed around, changing the locations of bars and shelves. Islands changed shape, sometimes becoming completely submerged, and old outcroppings disappeared while new ones materialized overnight.”
Book:James