Question

how is Delta formed at the mouth of a river​

Answer 1

When a river reaches a lake or the sea the water slows down and loses the power to carry sediment . The sediment is dropped at the mouth of the river. Some rivers drop so much sediment that waves and tides can't carry it all away. It builds up in layers forming a delta.

Answer 2

☣️Deltas are formed at the end of rivers (river mouth) as it flows into the sea

☣️ Rivers carry a lot of sediment (mud)

☣️ The river flows into a calm sea

☣️This slows the river down

☣️ Which makes the river drop its sediment

☣️ This deposited sediment builds up over years creating a delta

☣️ The river is forced to split up

☣️ The smaller rivers made by deltas are called distributaries

☣️ Examples of Deltas are Nile Delta, Ganges Delta

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