[GRASS-dev] r.watershed question

[Markus Metz]

Michael Barton wrote:
> Should r.watershed be giving negative accumulation values? 
Yes. Negative accumulation values indicate that these cells receive 
offmap inflow or inflow from a MASKed area from somewhere upstream. This 
has always been the case for flow accumulation output. Negative flow 
accumulation can be interpreted as "at least so many cells drain into 
this cell, but probably more cells that were not included in the 
region/unMASKed area". State that more clearly in the manpage?

Regards,

Markus M