You are right. I just wish to make it clear that I only mean that the dredging should be based on scientific / engineering diagnostic analysis of the river portions, not just to dig the river considering it will cause more inflow of water in river. It is totally undesirable. Other than the reasons mentioned by you, there may so may other reasons, differing river to river and place to place.
Published by Yogesh Agrawal, Director (retired), Minor irrigation schemes, Water Resources Department at Govt of Rajasthan
You are right. I just wish to make it clear that I only mean that the dredging should be based on scientific / engineering diagnostic analysis of the river portions, not just to dig the river considering it will cause more inflow of water in river. It is totally undesirable. Other than the reasons mentioned by you, there may so may other reasons, differing river to river and place to place.