Question

How can you use the direction of flow of the major rivers in Texas to determine the general changes
in elevation of land?

Answer 1

Answer:

Unless the land it totally flat, rivers of water run downhill. ... If the source of a river is at a higher elevation than the mouth, that river will run from the source to the mouth. However, if that (higher) source is to the south of the mouth, that river will then flow to the north (downhill).