Erosional processes:
Hydraulic action:
Force of water on river bank undercuts and removes material.
Corrasion:
Rocks bounce against side and bottom of river and break off more material.
Attriction:
Rocks collide with each other and break up into smaller pieces.

Transportation processes:
Solution:
Dissolved material being carried along by the river.
Suspension:
Small particles carried along by the river.
Traction:
Particles carried along the river bed.
Saltation:
Bedload particles bounced along the river bed.

Deposition processes:
Deposition:
River slows and dumps material including silt.