r.terraflow
Flow computation for massive grids.
Raster (r.*)
ParameterRaster|elevation|Name of elevation raster map|False
ParameterBoolean|-s|SFD (D8) flow (default is MFD)|False
OutputRaster|filled|Filled (flooded) elevation
OutputRaster|direction|Flow direction
OutputRaster|swatershed|Sink-watershed
OutputRaster|accumulation|Flow accumulation
OutputRaster|tci|Topographic convergence index (tci)
OutputFile|stats|Runtime statistics