The low water land that is formed at the mouth of a river is called a delta.
delta
Delta
The area of fertile soil at the mouth of a river is called river delta.
An example of a land feature formed by river erosion is the oxbow lakes.
A "Delta", so-called because of the tendency of the 'channels' created by hydrologic soil deposition to frequently vary their courses due to creation of impedences to linear flow caused by precipitation of the colloidally-suspended particles of soil which fall out of suspension as the velocity of the water is reduced, raising the floor of the channels, thus forcing the flow to seek an easier [more lateral] route. "Delta" is used in a mathematical sense, meaning "variation".
A floodplain is the land that is covered by water when a river overflows it's banks. When this happens, silt and clay are deposited over time and the land on either side of the river flattens out. Any depressions in the land will hold water when the river level returns to normal after flooding and therefore more clay and silt will be deposited there filling it up.
The low water land that is formed at the mouth of a river is called a delta.
It is formed by water hitting both sides for years until there is no more land there and water can get through from both sides.
The answer is delta
swamp
The mouth of a river is where the river meets the sea, so is water.
A delta.
The Delta
lake
delta
A delta
Delta
The land formed by deposited soil at the mouth of a river is called a delta (named for the Greek letter, which is similarly triangular in shape).