The documentation is being updated for version 1.3. Some sections may be incomplete.
If you want to create water flows, similar to what you might find at a beach, you can fake them using Erosion.
First, we set up a SlopeNoise and erode it. The Erosion settings of high downcutting values (all 3 sliders) promote wider, sandier flows.
Then we create a Perlin with low octaves and clamp it down to a flat-ish state.
Finally, subtract the Wear map from the Perlin.
Draw to Modify Multipass Erosion
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This documentation is licensed under the MIT License, a very permissive open-source license.