> > I want to generate a runoff map starting from elevation map and annual > rainfall…is there a tool in GRASS? > > Some of these modules may be of assistance:
http://grass.fbk.eu/grass64/manuals/html64_user/r.terraflow.html http://grass.fbk.eu/grass64/manuals/html64_user/r.watershed.html A more sophisticated module addressing rainfall events over spatially variable terrain, with associated output depths and flow velocities: http://grass.fbk.eu/grass64/manuals/html64_user/r.sim.water.html Mark
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