A delta is a geographical feature formed at the mouth of a river, where the river flows into a larger body of water, such as an ocean or a sea.
Deltas are characterized by their triangular or fan-shaped appearance and are created as sediment carried by the river is deposited at its mouth.
This sediment accumulation leads to the formation of numerous channels, islands, and wetlands. Deltas are ecologically important as they provide habitats for diverse wildlife and play a crucial role in reducing coastal erosion.
They are also agriculturally fertile areas due to the nutrient-rich sediment deposits.