v.gsflow.segments - GRASS GIS manual

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NAME

v.gsflow.segments - Prepares stream segments for PRMS and GSFLOW

KEYWORDS

vector, stream network, hydrology, GSFLOW

SYNOPSIS

v.gsflow.segments

v.gsflow.segments --help

v.gsflow.segments input=name output=name [icalc=integer] [cdpth=float] [fdpth=float] [awdth=float] [bwdth=float] [iupseg=string] [flow=string] [runoff=string] [etsw=string] [pptsw=string] [roughch_value=float] [roughch_raster=string] [roughch_points=string] [roughch_pt_col=string] [roughbk_value=float] [roughbk_raster=string] [roughbk_points=string] [roughbk_pt_col=string] [width1=float] [width2=float] [width_points=string] [width_points_col=string] [width1=float] [width2=float] [width_points=string] [width_points_col=string] [fp_width_value=float] [fp_width_pts=string] [fp_width_pts_col=string] [--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]: Vector stream network from r.stream.extract; Or data source for direct OGR access
output=name [required]: Segments: stream segments for GSFLOW / PRMS; Name for output vector map
icalc=integer: Stream depth option: 0-const; 1,2-Manning (rect/8-pt); 3-aQ^b; Default: 1
cdpth=float: Flow depth coefficient [meters]; used if ICALC=3; Default: 0.4
fdpth=float: Flow depth exponent; used if ICALC=3; Default: 0.42
awdth=float: Flow width coefficient [meters]; used if ICALC=3; Default: 4
bwdth=float: Flow width exponent; used if ICALC=3; Default: 0.23
iupseg=string: Category of upstream diversion segment (from_cat,to_cat,...); Default: 0,0
flow=string: Streamflow entering the upstream-most segs (cat,Q,cat,Q,...); Default: 0,0
runoff=string: Diffuse runoff entering each segment (cat,Q,cat,Q,...); Default: 0,0
etsw=string: Direct removal of in-channel water by ET (cat,Q,cat,Q); Default: 0,0
pptsw=string: Direct precipitation on the stream (cat,Q,cat,Q); Default: 0,0
roughch_value=float: In-channel Manning's n (single value) for ICALC=1,2; Default: 0.035
roughch_raster=string: In-channel Manning's n raster map for ICALC=1,2
roughch_points=string: In-channel Manning's n vector point meas for ICALC=1,2
roughch_pt_col=string: Column name for in-channel n point measurements
roughbk_value=float: Overbank Manning's n for ICALC=2; Default: 0.06
roughbk_raster=string: Overbank Manning's n raster map for ICALC=2
roughbk_points=string: Overbank Manning's n vector point meas for ICALC=2
roughbk_pt_col=string: Column name for overbank n point measurements
width1=float: Upstream width in segment [m], uniform in watershed; Default: 5
width2=float: Downstream width in segment [m], uniform in watershed; Default: 5
width_points=string: Channel width point meas vect (instead of width1,width2)
width_points_col=string: Channel width point meas vect column
width1=float: Upstream width in segment [m], uniform in watershed; Default: 5
width2=float: Downstream width in segment [m], uniform in watershed; Default: 5
width_points=string: Channel width point meas vect (instead of width1,width2)
width_points_col=string: Channel width point meas vect column
fp_width_value=float: Floodplain width as constant value (ICALC=2); Default: 0
fp_width_pts=string: Floodplain width measurement vector (ICALC=2)
fp_width_pts_col=string: Floodplain width measurement column (ICALC=2)

DESCRIPTION
REFERENCES
SEE ALSO
AUTHOR

DESCRIPTION

v.gsflow.segments produces channel segments that are each one link in the full drainage network. Each segment also corresponds to a hydrologic response unit (HRU) in this formulation. These are used for the USGS combined groundwater (MODFLOW) and surface-water (PRMS) model GSFLOW.

REFERENCES

Ng, G.-H. C., A. D. Wickert, R. L. McLaughlin, J. La Frenierre, S. Liess, and L. Sabeeri (2016), Modeling the role of groundwater and vegetation in the hydrological response of tropical glaciated watersheds to climate change, in AGU Fall Meeting Abstracts, H13L–1590, San Francisco, CA.

AUTHOR

Andrew D. Wickert

SOURCE CODE

Available at: v.gsflow.segments source code (history)

Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730