delta
delta
I think that you mean where a river meets the ocean? Since the ocean and the sea are the same thing. It is called an estuary.
Estuary
a floodplane is when a river meets the sea or ocean
delta
Flood plain, ie lowwer course or river mouth.
The Nile forms a delta where it meets the Mediterranean.
sea, ocean, bay, gulf, lake, and river
When a river meets the sea it is called the River Mouth. Edit; It is called an estuary in most countries, but strictly an estuary has several channels entering the sea. The channels are of course separated by islands.
at the mouth^^^Incorrect ! A river starts at its source - usually at a high place, such as a hill or mountain. It ends at the river mouth - which is where it meets the sea.
It Is Where the River Meets The Sea
At the coast. This is the term for where land meets the sea.