GMS:MODFLOW Commands

The MODFLOW menu becomes active once the MODFLOW model has been built in GMS. The menu has two submenus: Optional Packages and Advanced. The commands in the MODFLOW menu are listed below:

New Simulation...

Creates a new MODFLOW simulation and brings up the Global Options/Basic Package dialog. If a simulation exists then the current one will be deleted and a new one will be made.

Delete Simulation...

Deletes the current MODFLOW simulation.

Check Simulation...

Brings up the Model Checker dialog. This generates a list of possible errors and warning messages in the top scrolling window.

Run MODFLOW...

Initiates the MODFLOW executable. GMS will ask if to save the project before running the executable.

Read Solution...

Opens a window to search for a previous MODFLOW solution.

Flow Budget...

Shows the model's flow budget as one zone (default) or multiple user defined zones.

Global Options...

Opens the MODFLOW Global/Basic Package dialog to set up a MODFLOW simulation.

HUF – Hydrogeologic Unit Flow...

Brings up the HUF Package dialog. This command is only available when the package option has been selected in the MODFLOW Packages dialog. For more information, see HUF Package.

LPF Package...

Opens the flow dialog to insert hydrologic parameters. (May not be LPF) This command is only available when the package option has been selected in the MODFLOW Packages dialog.

PCG – Pre. Conj.-Gradient Solver...

Opens the MODFLOW PCG Package solver dialog for the selected solver. (May not be PCG2)

UPW – Upstream Weighting...

Opens the [GMS:UPW Package|UPW Package]] dialog. This command is only available when the package option has been selected in the MODFLOW Packages dialog.

NWT – Newton Solver...

Opens the MODFLOW NWT Solver dialog. This command is only available when the package option has been selected in the MODFLOW Packages dialog.

OC – Output Control...

Opens the MODLFOW Output Control dialog to choose what comes out of a MODFLOW run.

Optional Packages >

Use the MODFLOW Packages dialog to select which packages are active in the menu.

BCF – Block Centered Flow...

Opens the MODFLOW Block Centered Flow Package dialog. This command is only available when the package option has been selected in the MODFLOW Packages dialog. See BCF Package to learn more.

CHD – Time-Variant Specified-Head...

Starts the MODFLOW Time Var. Head Package dialog. See CHD Package to learn more.

CLN – Connected Linear Network...

Opens the CLN Process dialog. See CLN Process to learn more.

CLN Wel – CLN Well...

Opens the MODFLOW CLN Wells Package dialog. See CLN Process to learn more.

DRN – Drain Package...

Opens the MODFLOW Drain Package dialog. See DRN Package for more information.

DRT – Drain Return Package...

Brings up the MODFLOW Drain return Package dialog. To learn more, see DRT Package.

EVT – Evapotranspiration...

Launches the MODFLOW EVT Package dialog. See EVT Package to learn more.

ETS – Evapotranspiration Segment...

Opens the MODFLOW ETS Package dialog. For more information, see ETS Package.

GAGE – Gage...

Starts the MODFLOW GAGE Package dialog. See GAGE Package to learn more.

GHB – General Head Package

Opens the MODFLOW General Head Package dialog. For more information, see GHB Package.

GNC – Ghost Node Correction Package

Opens the MODFLOW Ghost Node Correction Package dialog. For more information, see GNC Package.

HFB – Horizontal Flow Barrier...

LAK – Lake Package...

Launches the MODFLOW Lake Package dialog. See LAK Package for more information.

MNW1 – Multi-Node Well...

Brings up the Multi-Node Well (MNW1) Package dialog. To learn more, see MNW1 Package.

MNW2 – Multi-Node Well...

Brings up the Multi-Node Well (MNW2) Package dialog. This package is an updated version of the MNW1 Package. To learn more, see MNW2 Package.

RCH – Recharge...

Starts the MODFLOW Recharge Package dialog. See RCH Package for more information.

RIV – River...

Opens the MODFLOW River Package dialog. To learn more, see RIV Package.

PEST ASP...

Opens the PEST-ASP Options dialog. See PEST ASP Package for more information.

SFR2 – Streamflow-Routing...

Brings up the MODFLOW Streamflow-Routing Package dialog. To learn more, see STR/SFR Packages.

STR – Stream...

Launches the MODFLOW Stream Package dialog. See STR/SFR Packages to learn more.

SUB – Subsidence...

Unsaturated Zone (UZF) Package...

WEL – Well...

Opens the Well Package dialog. To learn more, see WEL Package.

Name File...

Opens the Name File dialog which allows editing file unit numbers and unsupported packages. To learn more, see Name File dialog.

Parameters...

Brings up a Parameters dialog. Options available in this dialog will vary. To learn more, see Standard MODFLOW Parameters.

Obervations...

Opens an Observations dialog. See Observations for more information.

Parameter Estimation...

Becomes available when Stochastic or Stochastic Inverse is selected as the Run Options in the MODFLOW Global/Basic Package dialog. To learn more, see PEST Dialog.

Stochastic...

Becomes available when Stochastic or Stochastic Inverse is selected as the Run Options in the MODFLOW Global/Basic Package dialog. The command brings up the Stochastic Options dialog. See Stochastic Options Dialog for more information.

Advanced >

Export Native MF2K Text...

Creates native MODFLOW files from existing GMS MODFLOW-with-hdf5 files.

Display Options...

Opens the Display Options dialog showing the MODFLOW tab.

Sources/Sinks...

Launches the MODFLOW Source/Sinks dialog. For more information see, MODFLOW Source/Sink Dialog.

Toggle Barrier

Creates a "no flow boundary" between two adjacent selected cells.

Cell Properties...

Brings up the 3D Grid Cell Properties dialog. For more information, see Cell Properties.

IFACE...

Opens the MODPATH IFACE dialog.

ITOP...

Brings up the MODPATH ITOP dialog.

Obsolete Commands

The following commands have been removed from the MODFLOW menu in the most recent versions of GMS.

Convergence Options...

See the PEST-ASP... command.

Related Topics

• MODFLOW