How are delta formed?

Answer 1

A delta is a landform that is created at the mouth of a river where that river flows into an ocean, sea, estuary, lake, resevoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river in smaller channels called distributaries. Over long periods of time, this deposition builds the characteristic geographic pattern of a river delta.

Conditions required to form deltas

1. The river must carry a large amount of sediments.

2. The waves or current along the coast must not be strong enough to remove the sediments deposited by the river, at least not faster than the river can deposit them.

3. The slope of the sea floor or lake at the river mouth must be gentle or flat.
A delta is formed when sediments and mud from a large river meet the salt water of a sea or ocean. It can be described as a low tract of alluvial land. Deltas often change in size based on ocean and river currents.
A delta forms a mouth at the end of a lake.This makes it to where the lake can flow into the ocean.

Answer 2

A river delta is a land form that forms at the mouth of a river, where the river flows into an ocean, sea, estuary, lake or reservoir. They are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river in smaller channels and dis-tributaries.

Answer 3

They are formed by the river reaching the end of its travels. The river flows into the ocean or sea and that is where they are formed.

Answer 4

Rivers and lakes