I know this is a stupid question but Im new and got the game on the 31st of October. But, how do you make rivers in map editor? I cant find out how.

I think you posted this in the wrong section. It should have been under 'Far Cry Map Making Forum'.

http://forums.ubi.com/eve/forums/a/frm/f/3171037696

Delete this post or create another thread under that section. Hopefully you will get an answer there.

Cheers.