Fascinating. Is there such a thing in Europe? I am not aware...
The river connecting two oceans: A creek in Wyoming splits in two, one side flowing to the Atlantic and one side to the Pacific. You can’t pass the...
@🎓 Dr. Freemo :jpf: 🇳🇱 Yes, I sometimes forget since a discussion it followed or not. Thanks
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@hanswolters FYI if you took these maps and overlaid them on a topographic map you'd find there is a very close relationship between them. In all likelihood the boundary between the 4 main (largest) colored areas would have the ridge of a mountain running along it which divides the waterflow down either face. The larger rivers will almost always exist in the lowest lying areas as well, the valleys below the mountains.
@hanswolters In short, the rivers will tend to lie perpendicular to the altitude lines on a topographic map and generally grow larger the more lines they pass through.