In the south is the area of the 'Cape Fear Arch'. Rivers most definitely flow in banks . The banks themselves show evidence of various layers of sediment , some beach sand, some swamp vegetation, some drier organic material. The rivers in this area still have flood plains , although that often have a swampy character . The Coast At the Coast wave action -replaces running water as the agent for erosion, deposition, and sediment movement.
Most waves are benign , but storm waves can do a large amount of damage.
Although the beach sand is readily moved by wind and waves, vegetation tends to stabilize dunes . Nevertheless, the constant shifting, especially if the vegetation or dune structure is disturbed, can lead to a renewal of erosion . Further, human actions may change natural ones, with severe impacts on structures which even sandbags find difficult to prevent. The physical landscape may play a major role in influencing the nature and location of human actions - particularly when there is a shortage of flat land in the mountains.