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*[[GMS:MODFLOW 6|MODFLOW 6]] *[[GMS:MODFLOW 6|MODFLOW 6]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...nder the ''MODFLOW'' menu, shows the files read and written when running a MODFLOW simulation. It allows the unit numbers to be edited, and unsupported packag

{{MODFLOW Links}} ...MS:MODFLOW Packages Supported in GMS#Solver Packages|solver packages]] for MODFLOW supported by GMS. The SOR solver only uses a head change convergence crite

...n dialog'' option is turned on in the [[GMS:Global Options/Basic Package|''MODFLOW Global/Basic Package'']] dialog. [[File:DlgRunModflow.png|thumb|none|left|480 px|Example of the ''Run MODFLOW'' dialog.]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

...cell properties. Most cell properties are associated with a model such as MODFLOW-USG. If no models exist in the GMS project then the ''UGrid Cell Properties ===MODFLOW===

[[File:PCB-Package.png|thumb|400 px|Example of the ''MODFLOW Prescribed Concentration Boundary (PCB) Package'' dialog]] ...only used when there is a constant concentration boundary condition in the MODFLOW-USG Transport simulation.

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

...c packages can be set using the [[GMS:SEAWAT Packages|VDF or VSC package]] dialogs. ...rid]], and [[GMS:Map to MODFLOW|convert the conceptual model data]] to the MODFLOW data defined at the grid cells.

{{MODFLOW Links}} ...cell properties. Most cell properties are associated with a model such as MODFLOW or MT3DMS. If no models exist in the GMS project then the ''Cell Properties

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...MS:MODFLOW Packages Supported in GMS#Solver Packages|solver packages]] for MODFLOW supported by GMS.

...cking '''Observations''' in the ''Options'' section of many of the package dialogs. It is used to define an array of one or more observation files. *[[GMS:MODFLOW 6|MODFLOW 6]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} The MODFLOW ''Properties'' dialog box is opened by right-clicking on the MODFLOW solution [[File:Generic Folder Locked.svg|16 px]] folder in the Project Exp

...ntrations associated with observation points and mass flux associated with MODFLOW boundary conditions. The dialog is reached through the '''Transport Observa ...river. This is similar to the flow observation groups that are created in MODFLOW models.

...ay''' command in the ''MODPATH'' menu. This command is only available if a MODFLOW simulation exists. ...ng|thumb|none|left|425 px|''3D Grid Cell Properties'' dialog showing the ''MODFLOW'' tab.]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

#Faster MODFLOW I/O ...files is much faster in GMS 8.1 due to eliminating repacking of the [[GMS:MODFLOW with HDF5|hdf5]] file.

*[[GMS:MODFLOW 6|MODFLOW 6]] *[[GMS:MODFLOW 6|MODFLOW 6]]

...SC Package|Viscosity (VSC)]] packages, and to enable or disable the SEAWAT MODFLOW AUX variables used by SEAWAT. The Variable-Density Flow package will use the MODFLOW methodology to solve the variable-density ground-water flow equation. The V

*[[GMS:MODFLOW-LGR|MODFLOW-LGR Support]] **MT3D menus and dialogs rename to reflect MT3D, RT3D, SEAM3D or PHT3D

{{MODFLOW Links}} The ''Output Control'' dialog is accessed from the ''MODFLOW'' menu. The ''Output Control'' dialog contains the following options:

{{MODFLOW Links}} ...GMS:MODFLOW Packages Supported in GMS#Solver Packages|solver package]] for MODFLOW supported by GMS. The LMG1 package as been replaced with the [[GMS:LMG Pack

#MODFLOW support ##[[GMS:GNC Package|GNC (Ghost Node Correction) Package]] for MODFLOW-USG

...ed to enter the values of the ICBUND array. The [[GMS:MODFLOW Array Editor|MODFLOW array editor]] is used to edit the ICBUND array. ...cal) to the ICBUND array. When a new MT3DMS simulation is initialized, the MODFLOW IBOUND array is used to initialize the values of the ICBUND array. Each cel

{{MODFLOW Links}} ...rection (GNC) package is an optional package included in [[GMS:MODFLOW-USG|MODFLOW-USG]]. It can be used to correct errors in the model that are created “wh

{{MODFLOW Links}} ...continuous curve. This option is selected when performing the '''Map→MODFLOW''' operation under the ''Transient TIN datasets'' section.

{{MODFLOW Links}} ...f the MNW package is available in the [[GMS:MNW2 Package|MNW2 package]]. A MODFLOW model can not use both the MNW1 and MNW2 packages, it must use one or the o

{{MODFLOW Links}} ...int Sources/Sinks''' command in the ''MODFLOW'' menu or by using the [[GMS:MODFLOW Conceptual Model Approach|conceptual model]] in the [[GMS:Map Module|Map mo

{{MODFLOW Links}} |title=MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model-Documentation o

...interface. It is also restricted in the size of the grid and the number of MODFLOW stress periods. Any size model can be [[GMS:Importing_MODFLOW_Files|importe | [[GMS:MODFLOW|MODFLOW Interface]] || Limited to one simulation and cannot be saved it there are m

{{MODFLOW Links}} Image:huf_grid.png|Side view of MODFLOW grid

...es]] that are linked to a particular numerical model such as [[GMS:MODFLOW|MODFLOW]]. Once a conceptual model has been defined, coverages can be created benea ...MODFLOW]] conceptual model. Optionally, transport can be included with the MODFLOW conceptual model. If transport is turned on then the transport model must b

{{MODFLOW Links}} ...mand in the ''MODFLOW'' menu or river cells can be created using the [[GMS:MODFLOW Conceptual Model Approach|conceptual model]] in the [[GMS:Map Module|Map mo

{{MODFLOW Links}} [[Image:SmsPackage.png|thumb|450 px|Example of the ''MODFLOW SMS Solver'' dialog.]]

...e computed flows to the observed flows. The computed flows are part of the MODFLOW output. GMS writes the necessary files so that MODFLOW will output the computed flow for boundary conditions created in the Map mo

{{MODFLOW Links}} [[File:MODFLOW-UZF.jpg|thumb|600 px|The ''MODFLOW UZF Package'' dialog.]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...re all done inside GMS using the CCF (Cell-to-Cell Flow) file generated by MODFLOW.

===Map to MODFLOW=== See [[GMS:Map to MODFLOW|Map to MODFLOW]]

...gned to solid used with the [[GMS:Solids to MODFLOW Command|'''Solids→MODFLOW''']] procedure. ...' – Ending grid layer assigned to solid used with the '''Solids→MODFLOW''' procedure.

{{MODFLOW Links}} Starting at GMS version 8.0, GMS supports MODFLOW 2005.

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...and for convertible layers in the Layer-Property Flow package. (taken from MODFLOW 2000 documentation)

{{MODFLOW Links}} ...he solvers available for MODFLOW. It requires reading in a DE4 file. The ''MODFLOW DE4 Solver'' package dialog will show the variables in the DE4 file. Variab

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} [[File:MODFLOW-LMG.jpg|thumb|320 px|The MODFLOW ''LINK-AMG (LMG) Package'' dialog.]]

{{MODFLOW Links}} ...ng or intraborehole flow that can significantly alter groundwater flow. A MODFLOW model can not use both the MNW1 and MNW2 packages, it must use one or the o

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} The ''MODFLOW Array Editor'' is used throughout the MODFLOW interface to edit array based data. The precise name of this dialog change

{{MODFLOW Links}} ...GMS version 10.0, GMS supports MODFLOW-USG.}} MODFLOW-USG is a version of MODFLOW based on finite volume calculations, thus allowing for many different types

{{MODFLOW Links}} ...OW-NWT.}} MODFLOW-NWT is a version of MODFLOW based on [[GMS:MODFLOW-2005|MODFLOW-2005]] that provides a different formulation of the groundwater flow equati

{{MODFLOW Links}} ...MS:MODFLOW Packages Supported in GMS#Solver Packages|solver packages]] for MODFLOW supported by GMS.

{{MODFLOW Links}} The computational time intervals for a MODFLOW simulation are called "stress periods". The transient stresses (pumping rat

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...es a text file for each GAGE station that is available to be opened from a MODFLOW solution in the Project Explorer. GMS also provides an interface to generat

{{MODFLOW Links}} For using the LAK package with MODFLOW-USG, the grid should have the same topology in all layers through which the

{{MODFLOW Links}} In the original version of MODFLOW, specified head boundaries are defined using a combination of the [[GMS:IBO

{{MODFLOW Links}} ...MS:MODFLOW Packages Supported in GMS#Solver Packages|solver packages]] for MODFLOW supported by GMS. The GMG solver is an iterative solver based on a multi-gr

{{MODFLOW Links}} ...' command in the ''MODFLOW'' menu or drains can be defined using the [[GMS:MODFLOW Conceptual Model Approach|conceptual model]] approach in the map module. Dr

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...e solvers available for MODFLOW-2005. Using the PCGN solver a specific GMS MODFLOW executable (mf2k5_..._parallel.exe) can be run with parallel processing on

#A MODFLOW simulation in memory. #A MODFLOW solution in memory computed using MODFLOW 2000 with a valid head and flow field.

...ss the package options, select USG Transport as the MODFLOW version in the MODFLOW Global basic package. For other versions of MODFLOW, the BCT process can be accessed by using the "Unsupported Packages" and ac

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

...es transport modeling capabilities to make use of flow terms calculated by MODFLOW packages previously unsupported by MT3DMS. The model also provides greater '''NOTE''': MODFLOW models that include the UZF package must include the UZT package in the ass

{{MODFLOW Links}} [[File:MODFLOWrecharge.jpg|thumb|400 px|The ''MODFLOW Recharge Package'' dialog.]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

...in the flow model. This number is simply the total number of cells in the MODFLOW model that have a source or sink defined at them. This number is computed a ===Initializing Point Source Sinks from MODFLOW===

{{MODFLOW Links}} ...x]] macro. The following table describes the display options available for MODFLOW models.

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...PEST ASP Package''''' (Advanced Spatial Parameterization) command in the ''MODFLOW'' | ''Optional Packages'' menu. The options are as follows:

{{MODFLOW Links}} The Connected Linear Network (CLN) process was developed for MODFLOW-USG to model one dimensional connected features that are much smaller than

{{MODFLOW Links}} ...I2 (SeaWater Intrusion) package is an optional package in MODFLOW-2005 and MODFLOW-NWT. It can be used to model 3D "vertically integrated variable-density

|model_type= Analysis of MODFLOW cell to cell flow files |tutorials= [[GMS:Tutorials#Models|MODFLOW Tutorials]]

At the top of the dialog, the '''MODFLOW Heads''' and '''MT3DMS Conc...''' buttons bring up a ''Select Dataset'' dia [[Category:MT3DMS Dialogs]]

{{MODFLOW Links}} The UPW (UPstream Weighting) flow package can only be used in a MODFLOW-NWT model. The UPW flow package is based on the [[GMS:LPF Package|LPF packa

{{MODFLOW Links}} ...lysis'' or a'' Threshold Analysis''. ''Capture zone analysis'' requires a MODFLOW solution set, but threshold analysis can be performed on any solution set t

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} ...al displacement file that is read by GMS and displayed as a dataset in the MODFLOW solution in the Project Explorer. A detailed description of the SUB input

{{MODFLOW Links}} [[File:MODFLOW-GHB.jpg|thumb|375 px|Example of the ''MODFLOW General Head Package'' dialog]]

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

...A units label is placed next to each of the input fields in all the model dialogs in GMS where the units are known. For example, the units for hydraulic cond * when calculating the stream stage constant when saving MODFLOW, and

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW 6 Beta}} {{MODFLOW 6 Links}}

{{MODFLOW Links}} |title=MODFLOW-2000, The U.S. Geological Survey Modular Ground-Water Model-Documentation o

{{MODFLOW Links}}{{Infobox Calibration}}{{GMS:MODFLOW Parameters - Two Methods}} This article describes how to use the standard MODFLOW parameterization method in GMS.

...low observations can be steady state or transient depending on the type of MODFLOW-USG simulation. ...bservations''' command) or when using the [[GMS:Map to MODFLOW|'''Map→MODFLOW''']] command.

...Global Options/Basic Package#IBOUND|MODFLOW IBOUND array]]. If there is no MODFLOW in the current project, then selecting this option might not change the dis ...; If dataset flags are not currently present in the active dataset, and a MODFLOW simulation with MT3D is currently in memory, the active/inactive status of

...polygons making up the MODFLOW conceptual model in the Map module. When a MODFLOW solution is imported, the computed flows are read for the arcs and polygons ...ialog is accessed by selecting the '''''Observations''''' command in the ''MODFLOW'' menu.