A delta.
lake
The triangular landform formed by deposits at the mouth of a river in Louisiana is called a delta. Deltas are typically characterized by a network of distributaries and can be rich in sediment and nutrient deposits, making them fertile areas for agriculture and biodiversity.
The area of land roughly triangular in shape where a river enters a lake or sea is known as a delta. Deltas are formed as the river deposits sediment and other materials it carries downstream, creating a fan-shaped landform. Deltas are typically rich in nutrients and are important ecosystems for various plants and animals.
The Mississippi river 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).
The triangular section of land formed at the mouth of a river is called a delta. Deltas are created as the river deposits sediment and soil brought downstream over time, resulting in a unique ecosystem with a diverse range of plant and animal life.
Floodplain
Floodplain
Floodplain
A plain is a level area of land. A delta is land created by a river that deposits soil. The term "delta" usually impies the triangular shape of land at the opening of a river into a sea or lake. However a delta can be formed by flooding of large rivers. Just below Memphis, there is some flat land that has deep, fertile top soil that has been created by thousands of years of flooding by the Mississippi River. These plains are deltas.
Floodplain
Delta is the name for such a piece of land.