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PRERNA FOR IAS
THE FORMATION OF DELTAS
1. River Splits into Distributaries
As a river approaches the sea or a lake, its flow slows down and it begins to deposit sediments. These deposits often block the main channel, causing the river to divide into several smaller channels known as distributaries. Distributaries help distribute water and sediment across a wider area, contributing to the formation of a delta. They create a network of waterways that shape the landscape and support fertile agricultural land. Famous examples include the distributaries of the Ganga-Brahmaputra Delta. This branching pattern is one of the most important characteristics of a mature delta system.
2. River Spreads Out and Slows Down
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Learn how deltas form through river sediment deposition, distributaries, and land building. Explore the geological process at river mouths and major delta systems worldwide.
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