What Does a Delta Mean?
A delta is land that forms at the mouth of a river, where it empties into an ocean, sea, another river or a lake. The river deposits vast amounts of sediment into the other body of water, which gradually builds up into a land mass. The simplest way to explain how one forms is the amount of material that the river deposits is more than what the tides and waves can carry away. The largest delta in the world is the Ganges Delta on the Indian sub-continent, home to some of the most fertile land on Earth.
