r.flow help Description: Constructs flowlines. Computes flowlines, flowpath lengths, and flowaccumulation (contributing areas) from a elevation raster map. Keywords: raster, hydrology Usage: r.flow [-u3m] elevation=name [aspect=name] [barrier=name] [skip=value] [bound=value] [flowline=name] [flowlength=name] [flowaccumulation=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui] Flags: -u Compute upslope flowlines instead of default downhill flowlines -3 3D lengths instead of 2D -m Use less memory, at a performance penalty --o Allow output files to overwrite existing files --h Print usage summary --v Verbose module output --q Quiet module output --qq Super quiet module output --ui Force launching GUI dialog Parameters: elevation Name of input elevation raster map aspect Name of input aspect raster map barrier Name of input barrier raster map skip Number of cells between flowlines bound Maximum number of segments per flowline flowline Name for output flow line vector map flowlength Name for output flow path length raster map flowaccumulation Name for output flow accumulation raster map (Mon Mar 20 13:35:07 2017) Command finished (0 sec) Q2A