The base of a river channel refers to the lowest part of the riverbed, where the water flows. It is typically composed of various materials, such as sand, gravel, or rock, and plays a crucial role in determining the river's flow characteristics and ecosystem. The shape and composition of the channel base can influence sediment transport, aquatic habitats, and the overall health of the river system.
The ultimate base level of a stream is sea level. A base level is the lowest point to which a stream can erode its channel.
The "Main Channel".
the bottom of a river
A river channel
The River Channel is just before the the river meets the mouth or sea.
The River Severn is the main river that flows into the Bristol Channel.
river bank.
The river bed
the river Oise and the river Marne are important tributaries to the Seine river.
If a river channel has a steep gradient, the river flows faster and has more erosive energy.
channel
The River's Velocity, Gradient, and Channel shape/roughness