GSFLOW–GRASS v1.0.0: GIS-enabled hydrologic modeling of coupled groundwater–surface-water systems
<p>The importance of water moving between the atmosphere and aquifers has led to efforts to develop and maintain coupled models of surface water and groundwater. However, developing inputs to these models is usually time-consuming and requires extensive knowledge of software engineering, o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-11-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://www.geosci-model-dev.net/11/4755/2018/gmd-11-4755-2018.pdf |
| Summary: | <p>The importance
of water moving between the atmosphere and aquifers has led to efforts to
develop and maintain coupled models of surface water and groundwater.
However, developing inputs to these models is usually time-consuming and
requires extensive knowledge of software engineering, often prohibiting their
use by many researchers and water managers, thus reducing these models'
potential to promote science-driven decision-making in an era of global
change and increasing water resource stress. In response to this need, we
have developed GSFLOW–GRASS, a bundled set of open-source tools that
develops inputs for, executes, and graphically displays the results of
GSFLOW, the U.S. Geological Survey's coupled groundwater and surface-water
flow model. In order to create a robust tool that can be widely implemented
over diverse hydro(geo)logic settings, we built a series of GRASS GIS
extensions that automatically discretizes a topological surface-water flow
network that is linked with an underlying gridded groundwater domain. As
inputs, GSFLOW–GRASS requires at a minimum a digital elevation model, a
precipitation and temperature record, and estimates of channel parameters and
hydraulic conductivity. We demonstrate the broad applicability of the toolbox
by successfully testing it in environments with varying degrees of drainage
integration, landscape relief, and grid resolution, as well as the presence
of irregular coastal boundaries. These examples also show how GSFLOW–GRASS
can be implemented to examine the role of groundwater–surface-water
interactions in a diverse range of water resource and land management
applications.</p> |
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| ISSN: | 1991-959X 1991-9603 |