What are the conditions needed for a river delta to be formed?

Answer 1

river looses velocity, and deposits it's load (river looses velocity when it enters a river or lake) heavy material is deposited first and silt last.

for a delta to be formed there must be deposition of sediments and distribution channels.

delta are formed when the river deposits it alluvium at the mouth of the river and then the river forced to split.

Answer 2

1. Tideless sheltered coast
2. Shallow sea adjoining the Delta
3. No strong current at the river mouth which may wash away the sediments.
4. Active vertical and lateral erosion in the upper course of the river to supply large amount of sediments

Answer 3

deltas are formed when the river deposits it alluvum (sand and silt) at the mouth of the river and then the river is forced to split