PMC Editing Wiki: Tools, Wilbur

Tutorial HOWTO create incise flow erosion heightmap with Wilbur.

Filter → Erosion → Incise Flow, use values for first pass:
blur 2
amount 3.5
flow exponent 0.35
effect blend 0.25

Second pass:
blur 0.5
amount 2
flow exponent 0.1
effect blend 0.1