Hi Marcello,
You need to use watershed analysis (r.watershed) and then watershed basin creation (r.water.outlet), both located under raster/hydrologic modelling in the wxgui.
Michael
Date: Fri, 11 Mar 2011 20:28:02 -0300
From: Marcello Benigno benigno.marcello@gmail.com
Subject: [GRASS-user] hydrological modelling in GRASS - Create
Watershed by one pointHi All,
I´m beginner in Grass and need work with hydrological Analysis. Is it
possible define a watershed from one point (x,y) like ArcHidro Extension? I
didn´t find this tool in Grass.Thanks in advance and sorry for my bad English.
–
Marcello Benigno B. de Barros Filho
Prof. do Curso Superior de Tecnologia em Geoprocessamento - IFPB
Mestre em Ciências Geodésicas e Tecnologias da Geoinformação - UFPE
http://profmarcello.blogspot.com
http://about.me/marcello.benigno