GRASS logo

Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

v.gsflow.reaches - Build stream "reaches" that link PRMS segments to MODFLOW cells

KEYWORDS

vector, stream network, hydrology, GSFLOW

SYNOPSIS

v.gsflow.reaches
v.gsflow.reaches --help
v.gsflow.reaches segment_input=name grid_input=name elevation=name output=name [s_min=float] [h_stream=float] [upstream_easting_column_seg=string] [upstream_northing_column_seg=string] [downstream_easting_column_seg=string] [downstream_northing_column_seg=string] [tostream_cat_column_seg=string] [strthick=float] [strhc1=float] [thts=float] [thti=float] [eps=float] [uhc=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:

segment_input=name [required]
PRMS stream segments
Or data source for direct OGR access
grid_input=name [required]
MODFLOW grid
Or data source for direct OGR access
elevation=name [required]
DEM for slope along reaches
Name of input raster map
output=name [required]
Reaches for GSFLOW
Name for output vector map
s_min=float
Minimum reach slope
Default: 0.0001
h_stream=float
Stream channel depth (bank height) [m]
Default: 1
upstream_easting_column_seg=string
Upstream easting (or x or lon) column name
Default: x1
upstream_northing_column_seg=string
Upstream northing (or y or lat) column name
Default: y1
downstream_easting_column_seg=string
Downstream easting (or x or lon) column name
Default: x2
downstream_northing_column_seg=string
Downstream northing (or y or lat) column name
Default: y2
tostream_cat_column_seg=string
Adjacent downstream segment cat (0 = offmap)
Default: tostream
strthick=float
Streambed sediment thickness [m]
Default: 1
strhc1=float
Streambed hydraulic conductivity [m/day]
Default: 5
thts=float
theta_sat: Streambed saturated water content (i.e. porosity) [unitless]
Default: 0.35
thti=float
Streambed initial water content [unitless]
Default: 0.3
eps=float
Epsilon: streambed Brooks-Corey exponent [unitless]
Default: 3.5
uhc=float
Streambed unsaturated zone saturated hydraulic conductivity [m/day]
Default: 0.3

Table of contents

DESCRIPTION

v.gsflow.reaches produces channel "reaches", which are the intersection between PRMS stream segments and MODFLOW grid cells, for the USGS combined groundwater and surface-water 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.segments
v.gsflow.mapdata
v.stream.inbasin
v.stream.network

AUTHORS

Andrew D. Wickert

SOURCE CODE

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

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


Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

Main index | Vector index | Topics index | Keywords index | Graphical index | Full index

© 2003-2022 GRASS Development Team, GRASS GIS 7.8.8dev Reference Manual