r.threshold finds optimal threshold for stream extraction.
The module finds a first tentative value of upslope area to be used as input to
extract the river network using r.stream.extract or r.watershed.
Real streams depend on many factors, such as rainfall, infiltration rate,
geology, climate etc. i.e. the same topography in different parts of
the world yields different real stream networks. This approach provides
a best guess about what makes sense when looking only at the DEM.
Margherita Di Leo (dileomargherita AT gmail DOT com)
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