Hello!
I am looking for a way to identify valleys that have at least a depth of 50m and a width of 100m from DEM Data.
A visual method woul be to draw different profile transects but I would prefer a more automatical method. For the depth of a valley I could use the watershed analyses and subtract the DEM-Height of a river basin from the DEM-Height of its watershed-area which results in the height-difference.
But I have no idea how to analyze if the valley has a width of at least 100 meters.
Can somebody give me a hint?
Thanks,
Kerstin
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