Thread: A very serious problem.

How the erode of river cause the riverbank?

Build a ramp with moist soil and empty a glass of water onto the top.

Kalster has given the perfect practical answer. Here is the theoretical one.

You answered your question, in your question. Erosion. Flowing water erodes the soil below it, cutting a path, or river bed in the ground.

James, if this is not a homework question, can you expand a bit?

Are you wanting to understand the formation of particular types of riverbanks?

.......



Ophiolite, I'd be tempted to include deposition as well as erosion to cover riverbank formation ...

well of course as Ophiolite said erosion is the main and the only cause!

Originally Posted by kakarot

well of course as Ophiolite said erosion is the main and the only cause!

On reflection I was only about half right. River banks are also produced by deposition - think of the levees on the Mississippi.

Originally Posted by Ophiolite

Originally Posted by kakarot

well of course as Ophiolite said erosion is the main and the only cause!

On reflection I was only about half right. River banks are also produced by deposition - think of the levees on the Mississippi.

and braided streams ... and meanders ... even deltas ...

generally upstream - higher gradient, fast flow; erosion dominates
generally midstream - low gradient, flow varies across stream; erosion and deposition both occur
generally downstream - near zero gradient, slow flow; deposition dominates