The mouth
Source
Middle course
Upper course
Lower course
the starting point of the river
the initial stage of the river in the mountains. The water flows rápidly and drags rocks with it.
where the river flows more slowy through landscape that are less steep,forming a flood plain
in this final stage the river flows slowly and deposits the rocks that it has dragged along with it and forms curves called meanders
at the final stage the water carried by the river flows into another river,or the sea. at this point any remainding sediments are deposite
