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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)

Table of contents

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.

SEE ALSO

v.gsflow.export
v.gsflow.gravres
v.gsflow.grid
v.gsflow.hruparams
v.gsflow.reaches
v.gsflow.mapdata
v.stream.inbasin
v.stream.network

AUTHORS

Andrew D. Wickert

SOURCE CODE

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

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

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© 2003-2023 GRASS Development Team, GRASS GIS 7.8.9dev Reference Manual