Deltas are wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river. Although very uncommon, deltas can also empty into land. A river moves more slowly as it nears its mouth, or end.

Where do deltas usually form?

Deltas are located at river mouths. They usually exist at the mouth of a river entering an ocean. However, deltas can also be found where rivers meet a lake.

Where are deltas formed Class 9?

A delta is a triangular piece of land which is found at the mouth of a river. It is formed when a river deposits the sediments as the flow leaves its mouth.