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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=float] [roughbk=float] [width1=float] [width2=float] [--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 segments (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=float
In-channel Manning's n for ICALC=1,2
Default: 0.035
roughbk=float
Overbank Manning's n for ICALC=2
Default: 0.06
width1=float
Upstream width in segment [m], uniform through watershed
Default: 5
width2=float
Downstream width in segment [m], uniform through watershed
Default: 5

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.segments v.stream.inbasin v.stream.network

AUTHORS

Andrew D. Wickert

Last changed: $Date 2016-09-27$

SOURCE CODE

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

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