Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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)
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.
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.
v.gsflow.export,
v.gsflow.gravres,
v.gsflow.grid,
v.gsflow.hruparams,
v.gsflow.reaches,
v.gsflow.mapdata,
v.stream.inbasin,
v.stream.network
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
Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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GRASS GIS 8.2.2dev Reference Manual