What is it?
It is a tributary
What is it?
It is a stream
What is it?
It is a delta mouth
What is it?
It is a river mouth
What is it?
It is a source
What is it?
It is a river bank
What is it?
It is a pond or natural lake
What is it?
It is an estuary mouth
What is it?
It is a dam or artificial lake
What is it?
It is a river bed
What is it?
It is a meander
What is it?
It is a waterfall