1 Hamartia: Many people who discuss tragedy often mention the hero's 'fatal' or 'tragic flaw.' However, Aristotle would never accuse a hero of such a personal defect. 2  Instead, he asserted that they were guilty of hamartia, or missing the mark.
Floodplains are landscapes shaped by running water. As streams and their larger forms, rivers, flow across the surface of land, they transport eroded rock and other material. (Erosion is the gradual wearing away of Earth surfaces through the action of wind and water.)
Formation of natural levees by spill-over of sediment during floods. Next to the channel mostly sand is deposited (highest flow velocities), and sand compacts less than the mud that is deposited farther away. Thus, over time these near-channel sand deposits will over time rise above the (more compacted) floodplain and form natural levees. Overview of features associated with meandering streams.