[GRASS-user] Problem with r.watershed in Spearfish

Margherita Di Leo diregola at gmail.com
Mon Jan 25 16:33:04 EST 2010

Hi list!

I often used r.watershed without problems, but today i had a very 
strange one. Please can anyone verify that?
I used Spearfish mapset, map: elevation.10m:

g.region res=100
r.watershed elevation=elevation.10m at PERMANENT threshold=100 
accumulation=acc_10 drainage=dir_10 stream=str_10 convergence=5 memory=300

The stream map has many streams with 0 value.
The problem is only with res=100.
Does r.watershed fail?

Thank you

Eng. Margherita Di Leo
Ph.D. Candidate
Methods and Technologies for Environmental Monitoring
Department of Environmental Engineering and Physics (DIFA)

University of Basilicata 
Campus Macchia Romana
85100 - Potenza 

Office: +39-0971205363
Fax: +39-0971205160

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