[GRASS-user] Watershed Area above a certain point

GRASS GRASS user
1

I have sampling locations that are located along streams. I would
like to generate watersheds above a particular sampling location. How
can I do this in GRASS, easily? I have thought of finding the flow
accumulation values at the points of interest and then using these
values in multiple calls to r.watershed, but this would be increadibly
time consuming. Is there a way to do this more automated.
thanks,

--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

                -K. Mullis

2

r.water.outlet works well for that.

Mark

On Wed, Nov 18, 2009 at 3:41 PM, stephen sefick <ssefick@gmail.com> wrote:

I have sampling locations that are located along streams. I would
like to generate watersheds above a particular sampling location. How
can I do this in GRASS, easily? I have thought of finding the flow
accumulation values at the points of interest and then using these
values in multiple calls to r.watershed, but this would be increadibly
time consuming. Is there a way to do this more automated.
thanks,

--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

                                                           \-K\. Mullis

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3

M S wrote:

r.water.outlet works well for that.
  

Try r.stream.basins to get basins for all your points of interest at once.

Markus M

Mark

On Wed, Nov 18, 2009 at 3:41 PM, stephen sefick <ssefick@gmail.com> wrote:
  

I have sampling locations that are located along streams. I would
like to generate watersheds above a particular sampling location. How
can I do this in GRASS, easily? I have thought of finding the flow
accumulation values at the points of interest and then using these
values in multiple calls to r.watershed, but this would be increadibly
time consuming. Is there a way to do this more automated.
thanks,

--
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

                                                               -K. Mullis
_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user

_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user