How do I get a "River Flow" map in Wilbur?
I'm currently working on a commission and, after re-reading through A2area's wonderful Israh tutorial, learned that you can export a "River Flow" map from Wilbur that outlines only the rivers of a height map. This would be a very useful feature for me, only I can't seem to get it to work. The map I am currently working on is too large to upload so instead I've uploaded an example of a height map from a previous map, the settings I'm using (a la A2area's directions), and the baffling result. As you can see, the result isn't isolated neat little rivers but rather some rivers in the sea, and then a bunch of tiny white lines all over the land mass. What am I doing wrong here? Please help.