You know, one thing that stings me is when the "River Police" come down and knock your rivers. I understand that everyone gets confused of the general structure of a river. But what gets me is, when they harp on "rivers don't flow" north. They usually pick on little curves in the river that the designer made that go northward instead of south. I'd like to point out that the Nile River flows northward. If you look at the Ohio River Map, you can clearly see in some areas that the river flows northward. Will the River Police pick on that natural state?

Example: http://roble.pntic.mec.es/rmac0040/i...sippiRiver.gif