the flow of the river.
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Meander.
Flood plain, ie lowwer course or river mouth.
a dry river bed
velocity
The path that a stream follows is a channel.
Delta
Riverbed, or simply bed.
prognosis
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On Earth, meandering streams occur where the floodplain is resistant to erosion. Often this is because the stream banks are held firm by grass and tree roots.
shingles
Drainage Basin
Status set