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After watching a lot of tutorials and trying all approaches I still somehow manage to get streams that are too short over my DEM, resulting in very small basins. I do it the standard way:

  • Get a DEM
  • Fill sinks with the Wang & Liu algorithm in SAGA
  • Get the Strahler Orders

The resulting streams are very short, resulting in countless small basins. I figured that using r.watershed I can get a better model, but then the stream segments only appear by the outlets.

I want to be able to get the basins that correspond to a specific order. Can anyone tell me what I am doing wrong, or is my topography just special?

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