[GRASS-user] r.watershed identify inland watershed

[Ken Mankoff]

I'm on mobile and can't fully reply, but isn't there an r.lakes or r.fill
module (possibly add on) that does this?

Generic answer: r.watershed is the wrong tool, but GRASS has support for
this.

Please excuse brevity. Sent from tiny pocket computer with non-haptic
feedback keyboard.

On Mon, Mar 29, 2021, 11:40 Micha Silver <tsvibar at gmail.com> wrote:

> Hello:
>
> You might try `r.param.scale`, or even better `r.geomorphons` modules to
> identify geomorphology features, then filter out all pixels identified
> as pits.
>
>
> r.watershed is purposely designed to overcome depressions, and find flow
> routing thru these spots. So I don't think you can use that module to
> identify depressions.
>
>
> On 3/27/21 8:49 PM, ming han wrote:
> > Hi  Everyone
> >
> >      When I do watershed delineation using r.watershed for great salt
> > lake watershed. I found r.watershed always tried to assign an outlet
> > for a great salt lake, which does actually not exist because it is an
> > inland lake and the great salt lake has no watershed outlet at all.
> >
> >       I noticed that there is a depression option. But is there any
> > way that  r.watershed can automatically identify depressions while
> > defining flow accumulation and stream network?
> >
> > Thanks
> > Ming
> >
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>
> --
> Micha Silver
> Ben Gurion Univ.
> Sde Boker, Remote Sensing Lab
> cell: +972-523-665918
>
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