[GRASSLIST:5486] watershed and hidraulic gradient

[Carlos Henrique Grohmann de Carvalho]

Hello all,
 

 
I need to calculate hidraulic gradient for watersheds. Does anyone have a 
idea about how to do it? perhaps a cross with DEM to get the altimetric 
difference (how?), but maybe the length of the basin is the bigger problem. 
I'm a little lost in this...
 

 
thanks in advance.
 

 
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   Carlos Henrique Grohmann de Carvalho - Guano   
 
    Geologist - MSc Student at IGc-USP - Brazil
 
   Linux User #89721  PGP key: www.keyserver.net
 
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