Originally published at: https://help.world-machine.com/topic/drawing-a-manual-hero-river/
This quick tip video shows how to draw rivers in World Machine – just use the River tool. You can choose how the river embeds into and changes your terrain by adjusting its parameters, such as the depth and width of the river, the river valley it forms, and many other attributes.
The wrong video (for Tip 1) seems to be linked from this Tip.