r.flowfill - GRASS GIS manual

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NAME

r.flowfill - Moves water downhill into pools or the ocean/map edge

KEYWORDS

raster, hydrology

SYNOPSIS

r.flowfill

r.flowfill --help

r.flowfill input=name np=integer [threshold=float] [h_runoff=float] [h_runoff_raster=name] [ties=string] [ffpath=string] [output=name] [water=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--overwrite: Allow output files to overwrite existing files
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

input=name [required]: Input DEM; Name of input raster map
np=integer [required]: Number of processors to use (>= 3)
threshold=float: Threshold water-surface elevation change to conclude calculation; Default: 0.001
h_runoff=float: Initial depth of uniform runoff [thickness in map units]
h_runoff_raster=name: Initial depth of non-uniform runoff [thickness in map units]; Name of input raster map
ties=string: Tie-handling: counterclockwise from Northwest (PREF) or random (RAND); Options: PREF, RAND; Default: PREF
ffpath=string: Path to the FlowFill executable; Default: flowfill
output=name: Output DEM + pooled/remaining runoff; Name for output raster map
water=name: Output water depth at the end of the run; Name for output raster map

DESCRIPTION
REFERENCES
SEE ALSO
AUTHORS

DESCRIPTION

r.flowfill runs the FlowFill code (Callaghan and Wickert, 2019) that moves water cell-by-cell to flood depressions in a DEM. It can be used as a simplified/cellular simulation of downslope flow (though not equivalent to physics-based approaches for flow) or as a tool to fill depressions in a DEM. For further information, see the README at https://github.com/KCallaghan/FlowFill.

REFERENCES

Callaghan, K.~L., and A.~D. Wickert (in revision), Computing water flow through complex landscapes, part 1: Incorporating depressions in flow routing using FlowFill, Earth Surface Dynamics Discussions, doi:10.5194/esurf-2019-11.

AUTHORS

Kerry L. Callaghan, Andrew D. Wickert

SOURCE CODE

Available at: r.flowfill source code (history)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55