Question

Write down the difference between delta and estuary?

Answer 1

The main differences between Delta and Estuaryare as follows:

Delta

1. The triangular deposits made by the rivers at their mouth form Delta.
2. Deltas are formed in the regions of low tides and coastal plains.
3. Deltas are fertile lands.
4. Ganga and Brahmaputra, Krishna, Kaveri and Mahanadi form delta.

Estuary

1. The sharp edged mouth of rivers, devoid of any deposits is known as Estuary.
2. Regions of high tides and rift valleys witness Estuaries.
3. Estuary does not have fertile lands.
4. Narmada and Tapi rivers form Estuaries.

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Answer 2

A river delta is a triangular river mouth with several branches, side flows and bayous. The delta is formed by the silt and terrain carried by the river flow along the river, and it little by little lenghtens the flow of the river towards the sea.

An estuary is a river mouth which resembles a funnel and which widens, deepens and opens toward the sea. An estuary is formed by a tidal bore, which ablates the riverbed and carries the silt out to sea.