A body of water that flows from high ground to low ground is ...
a current of salt water
A river that joins a bigger river is a ...
The beginning of a river is the mouth
The bottom of a river is the riverbank
The river flows in its channel
A river may dry up in summer or during a drought
The place where the river meets the larger body of water is the end of the river and is called the mouth
Sometimes rivers flow very fast over rocks; these areas are called ...
Sometimes river flow over cliffs forming beautiful waterfalls.
The river usually flows down to a ...