Want this question answered?
Sediment will settle when the river current carrying it along reaches an area of calmness. This may result in sandbars or muddy river banks. It is also likely to settle when carried out to sea and it contributes to the ooze on the ocean floor.
A delta forms when the sediment from one area is brought to another area by a river after being eroded. The river will deposit the sediment at the mouth of the river, forming the delta.
An alluvion is the increase in the area of land due to the deposition of sediment from a river.
Floodplain
Floodplain
It is called a delta.
Floodplain
A delta is a low area at the base of a river. It is usually a plain where there is a layer of deposited sediment.
A floodplain is a flat, low-lying area next to a river that periodically floods, whereas a delta is a landform created at the mouth of a river where the river splits into smaller channels and deposits sediment. Floodplains are inundated by river water during floods while deltas are built by sediment deposition at the river's outlet.
Sediment accumulation is where sediment accumulates generally in the point of the lowest elevation. If sediment is in a river generally the sediment will accumulate at the mouth of the delta when entering the marine environment (proximal to distal).
A river which arrives at the sea which has a high tidal range will not form a delta. This is because the change in the tidal area will wash the sediment brought down by the river away. It is the build up of sediment brought down by the river into a relatively tideless sea which forms the delta.
Artesian spring