Removing River Biomes

[DolphinTaco]

I have a worldtype containing only a couple of my customs biomes. However there are still river biomes generating throughout the world. Does anyone know how to prevent river biomes from spawning?

[Elix_x]

There's definetly a way, because managed to do it.

If you want to have more information on world gen (incluing rivers and lakes), here's my topic where i'm understanding world gen in details: http://www.minecraftforge.net/forum/index.php/topic,34621

I discovered some interesting stuff.