The reason this is true is that although high flows carry the most sediment they are infrequent events. Ascertain expected level using regional graphs If necessary develop flow frequency curve for site or nearby sites 2. Localized removal of channel bed material by flowing water is called channel scour. The velocity with which entrainment takes place is called the erosion velocity. CV6, where C is a constant.
Stream capacity is maximum amount of sediment of a given size that a stream can carry as bed load.