Why do geographers study rivers?

Question

I know its important to study rivers for several reasons one example being to understand what going on with the climate ie, are there floods or droughts?

I just cannot think of other reasons..

Please help

Answer 1

To explore new things i.e. are there flood or droughts

Answer 2

Why do astronomers study the stars?

Why do archaeologists study fossils?

Why do mathematicians study numbers?

Because that is what is geography is all about . . . physical features of the land.

Answer 3

Since its geography, they need to study along those things.