streambank erosion

Streambank erosion is the process by which flowing water detaches and transports soil particles from the banks of a stream or river. This can occur through various mechanisms, including the impact of raindrops (sheet erosion) and the direct force of the water current.12

The shape and stability of a streambed and its banks are influenced by factors such as the stream's discharge, the type and amount of sediment it carries, and the resistance of the underlying material to erosion. Rivers transport sediment in three ways: as bed load (coarse material like sand and boulders), suspended load (finer particles like silt and clay), and dissolved load (minerals in solution).13

Erosion is a natural geological process that shapes landscapes. The material eroded from drainage basins, known as sediment yield, is ultimately derived from the weathering of underlying rocks. Over time, sediment is transported through the river system, with individual particles potentially being deposited and eroded multiple times before leaving the basin.3