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U.S. Geological Survey +
Langevin +
2280 Woodale Drive +
55112 +
Minnesota +
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Creation date"Creation date" is a predefined property that corresponds to the date of the first revision of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
15:58:46, 19 May 2023 +
No +
Test data sets are provided as part of rel … Test data sets are provided as part of releases available at https://www.usgs.gov/software/modflow-6-usgs-modular-hydrologic-model to verify that MODFLOW 6 is correctly installed and running on the system. </br></br>Test data sets are also available from https://github.com/MODFLOW-USGS/modflow6-examples (and viewable online at https://modflow6.readthedocs.io/), https://github.com/MODFLOW-USGS/modflow6-testmodels, and https://github.com/MODFLOW-USGS/modflow6-largetestmodels</br></br>The tests may also be looked at as examples of how to use the program. at as examples of how to use the program. +
see MODFLOW 6 Description of Input/Output
at https://water.usgs.gov/water-resources/software/MODFLOW-6 +
see MODFLOW 6 Description of Input/Output
at https://water.usgs.gov/water-resources/software/MODFLOW-6 +
MODFLOW 6 presently contains two types of … MODFLOW 6 presently contains two types of hydrologic models, the Groundwater Flow (GWF) Model and the Groundwater Transport (GWT) Model. The GWF Model for MODFLOW 6 is based on a generalized control-volume finite-difference (CVFD) approach in which a cell can be hydraulically connected to any number of surrounding cells. Users can define the model grid using</br></br>1. a regular MODFLOW grid consisting of layers, rows, and columns,</br>2. a layered grid defined by (x, y) vertex pairs, or</br>3. a general unstructured grid based on concepts developed for MODFLOW-USG.</br></br>For complex problems involving water-table conditions, an optional Newton-Raphson formulation, based on the formulations in MODFLOW-NWT and MODFLOW-USG, can be activated. The GWF Model is divided into "packages," as was done in previous MODFLOW versions. A package is the part of the model that deals with a single aspect of simulation. Packages included with the GWF Model include</br></br>- those related to internal calculations of groundwater flow (discretization, initial conditions, hydraulic conductance, and storage),</br>- stress packages (constant heads, wells, recharge, rivers, general head boundaries, drains, and evapotranspiration), and</br>- advanced stress packages (streamflow routing, lakes, multi-aquifer wells, and unsaturated zone flow).</br></br>An additional package is also available for moving water available in one package into the individual features of the advanced stress packages. The GWF Model also has packages for obtaining and controlling output from the model.</br></br>The GWT model for MODFLOW 6 simulates three-dimensional transport of a single solute species in flowing groundwater. The GWT Model solves the solute transport equation using numerical methods and a generalized CVFD approach, which can be used with regular MODFLOW grids or with unstructured grids. The GWT Model is designed to work with most of the new capabilities released with the GWF Model, including the Newton flow formulation, unstructured grids, advanced packages, and the movement of water between packages. The GWF and GWT Models operate simultaneously during a MODFLOW 6 simulation to represent coupled groundwater flow and solute transport. The GWT Model can also run separately from a GWF Model by reading the heads and flows saved by a previously run GWF Model. The GWT model is also capable of working with the flows from another groundwater flow model, as long as the flows from that model can be written in the correct form to flow and head files.n the correct form to flow and head files.
Active +
MODFLOW 6 is an object-oriented program an … MODFLOW 6 is an object-oriented program and framework developed to provide a platform for supporting multiple models and multiple types of models within the same simulation. This version of MODFLOW is labeled with a "6" because it is the sixth core version of MODFLOW to be released by the USGS (previous core versions were released in 1984, 1988, 1996, 2000, and 2005). In the new design, any number of models can be included in a simulation. These models can be independent of one another with no interaction, they can exchange information with one another, or they can be tightly coupled at the matrix level by adding them to the same numerical solution. Transfer of information between models is isolated to exchange objects, which allow models to be developed and used independently of one another. Within this new framework, a regional-scale groundwater model may be coupled with multiple local-scale groundwater models. Or, a surface-water flow model could be coupled to multiple groundwater flow models. The framework naturally allows for future extensions to include the simulation of solute transport.nclude the simulation of solute transport. +
Joseph +
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MODFLOW +
modflow +, simulation +, multiple +, models +, object-oriented program +, provide a platform +, platform for supporting +, version of modflow +, previous core versions +, supporting multiple models +, sixth core version +, supporting multiple +, multiple types +, modflow is labeled +, core version +, groundwater +, transport +, water quantity +, water quality +, lakes +, shallow-water model +, soil moisture +, compaction + and modflow 6 +
https://github.com/MODFLOW-USGS/modflow6/discussions and https://groups.google.com/g/modflow +
Modular +
https://www.usgs.gov/software/modflow-6-usgs-modular-hydrologic-model +
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15:58:46, 19 May 2023 +
Distributed memory +
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MODFLOW 6 is an object-oriented program and framework developed to provide a platform for supporting multiple models and multiple types of models within the same simulation +
12201 Sunrise Valley Drive +
20192 +
false +
false +
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Other +
CC0 1.0 +
Fortran90 +
Through web repository +
https://www.usgs.gov/software/modflow-6-usgs-modular-hydrologic-model +
1979 +
Model developer +
