[GRASS-user] create basins of similar area

[Markus Metz]

On Thu, Apr 25, 2019 at 5:34 PM Moritz Lennert <mlennert at club.worldonline.be>
wrote:
>
>
>
> Am 25. April 2019 17:29:24 MESZ schrieb Martin Landa <
landa.martin at gmail.com>:
> >Hi,
> >
> >čt 25. 4. 2019 v 17:19 odesílatel Francois Chartier
> ><fra.chartier at gmail.com> napsal:
> >> Use r.wathershed or r.basins.
> >
> >well, I know these tools. I am just not sure how to control optimal
> >basin area (eg. 4-5km2). I just found `threshold` parameter.
> >
>
>
> I don't really see how a homogeneous size could actually make sense. The
threshold allows you to define a minimum size, but depending on the actual
topography actual sizes of basins will always differ.

I agree. A solution could be manual editing: merge basins by adhering
hydrological rules (merge a downstream basin with an upstream basin granted
that other upstream basins do not become isolated). But hydrologically this
does not make sense, compare with stream order numbers.

Markus M
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