Slides in this set
River Basin is the area of land
drained by a river and its
Tributaries are small river that
join the main river channel.
The greater the number of
tributaries the denser the river
The point at which two rivers
meet is known as the confluence.
The watershed is the boundary
between two drainage basins.
The source is where it starts its
The mouth is where it reaches
the end of its journey.…read more
The upper course of the river
has V-shaped valleys, this is
because vertical erosion (erosion
downwards) takes place here.
Vertical erosion deepens the river
channel as gravity pulls the water
Lateral (sideways erosion) takes
place in the middle and lower
course of the river and this
widens the river channel (flood