Here is a great drawing of a rivers anatomy.

Understanding the names and the different parts of a river can help you learn to read them and to know what others may be talking about. When needing to navigate rivers this is an essential tool to have.

River anatomy

River anatomy – by Hanjo Maertsch

Next you will need to know what happens at each of those features and how you should deal with them so as to navigate them safely … or where its safe to play and explore!