v.gsflow.reaches - GRASS GIS manual

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.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

DESCRIPTION
REFERENCES
SEE ALSO
AUTHOR

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.

AUTHOR

Andrew D. Wickert

SOURCE CODE

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

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