The river bed.
the bottom of the river is called a bed
The bottom of the river is called the river bed.
The bottom of a river is called the river bed.
river basin is basically the bottom of the river it is also called river bed
sediments
At the riverbed, as it is called, are pebbles, sand, stones etc
At the riverbed, as it is called, are pebbles, sand, stones etc
pond, river, lake, etc.
the bottom of a river
River Bottom - album - was created in 1981.
The river bed
The bottom.The "bed" of a river is the bottom or floor of the river. It is where silt can accumulate and where bottom-feeding fish live.