estuary
The flat, wide area along a river is called its flood plain. This is sometimes part of a larger area called the alluvial plain, which formed as the river shifted over time and deposited soil when it flooded.
Depends on the river. Large rivers can be miles wide at the mouth.
The Euphrates river helps make up the land area of Mesopotamia along with the Tigris river. On average, the Euphrates 700 miles wide from its mouth.
The flat, wide area along a river is called its flood plain. This is sometimes part of a larger area called the alluvial plain, which formed as the river shifted over time and deposited soil when it flooded.
a river mouth
widest river in britain?
a Delta is a 'wetland' form that is created in the mouth of a river and is formed by sediments carried down by the river and deposited in its mouth. Over millions of years this can form a large flat area, or a tidal mouth, which is covered by the tidal flow of the sea
That is a 'delta'
An estuary.
about 300 miles
If I am so informed I believe the Ohio River is a mile wide in its most widest area ever.
At its mouth, The Amazon river is 16km (10 miles) wide