Compléter Parts of a riverVersion en ligne Complete this text about the parts of a river. par Lucía Fernández Carrasco CEIP Revello Málaga 1 slowly dragged starting drags final sediments mountains lake sea steep meanders flood rapidly Source : the point of the river . Upper course : the inicial stage of the river in the . The water flows and rocks with it . Middle course : where the river flows more through landscapes that are less , forming a plain . Lower course : in this stage the river flows slowly and deposits the rocks that it has along with it and forms curves calles . The mouth : at the final stage the water carried by the river flows into another river , a or the . At this point any remaining are deposited .