Thus these rivers contain very little amount of silts. These factors make these rivers unable to form a delta beacuse formation of delta needs gradual deposition of sediments by river in a large amount when before falling into the sea. read more
West flowing rivers don't form a delta because: -. The gradient of Western Ghats is very high, therefore the rivers flow with a very high speed. These rivers pass through hard rocks which are hard to be eroded down. Thus these rivers contain very little amount of silts. read more
However, this is not the case with West flowing rivers because they don't have to travel much distance to drain into the sea. As a result, they don't carry much sediments because they don't have the time to. This prevents them from forming deltas at their mouths and mostly only estuaries are formed. read more
In essence, a delta is a landform that is formed at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Mainland India wasn't created this way. read more