Why would a river be deeper in the center and shallow round the sides?

Question

I am doing a geography project and really need some help with finding out why a river would be deeper in the middle. Also I need to find out why it would be shallow round the edges. I really need some help. Thanks.

Answer 1

wow

Answer 2

um...i think it would be because it's around the shore, but i'm not possitive. Good luck!

Answer 3

By erosion, water forms a circular trough as it cuts over the ground. Unless rock formation prevented this, count on the middle of the river the deepest.