Channel Flow
… Excess precipitation ultimately reaches the stream channel system.
… the stream system is generally more defined, it is by no means a constant or permanent entity.
… The stream bed is constantly changing and evolving via aggredation and degradation.
… Stream channels convey the waters of the basin to the outlet and into the next basin.
… attenuation of the runoff hydrograph takes place.
… Stream channel properties (flow properties) also vary with the magnitude of the flow.