River key words Crossword

The bottom of the waterfall
The part were the water drops from in a waterfall
Something being worn away
It forms when the waterfall retreats
A bend in a river
The end of a river/ were the river meets the sea
When the river splits
A build up of land mass at the mouth of the river
When the river erodes the valley down
The op part of the river
were the stream begins
The rubbing of fine particles against an object
The wearing away of particles of rock as they bounce along the riverbed or knock against each other
The name for any material deposited by a river
The flow of the river
The amount of water flowing in a river per second
The flat land of the river valley close to the river banks
When the force of the water wears away the river bank from underneath