[GRASS-user] r.water.outlet

Stephan Holl stephan.holl at intevation.de
Thu Feb 8 08:15:49 EST 2007

Dear grass-users,

I am trying to use r.water.outlet to calculate the corresponding
watershed to a given outlet-point. As input map I use the resulting
drainage-map derived from r.watershed.

The resulting watershed is always one pixel large, exactly this pixel I
gave the input-coordinates for.

Does anybody had success to calculate more-or-less accurate watersheds
with this module?

I tried in spearfish w/ grass 6.2.1.
r.watershed elev=elevation.dem acc=acc drain=drain basin=basin
r.water.outlet --o drainage=drain basin=result_outlet
east=596687.8125 north=4920169.3125

Thanks for any hints.


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