User:Jmonson/MODFLOW 6 Packages: Difference between revisions

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*''GridData'' section – Contains a number of tabs, including:
*''GridData'' section – Contains a number of tabs, including:
**''ICELLTYPE'' – A flag for each cell that specifies how saturated thickness is treated.  
**''ICELLTYPE'' – A flag for each cell that specifies how saturated thickness is treated.  
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''K'' – The hydraulic conductivity.  
**''K'' – The hydraulic conductivity.  
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''K22'' – The hydraulic conductivity of the second ellipsoid axis.
**''K22'' – The hydraulic conductivity of the second ellipsoid axis.
***''Define'' – Turn on if K22 needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''K33'' – The hydraulic conductivity of the third ellipsoid axis.
**''K33'' – The hydraulic conductivity of the third ellipsoid axis.
***''Define'' – Turn on if K33 needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''ANGLE1'' – The first sequential rotation angle of the hydraulic conductivity tensor in degrees.
**''ANGLE1'' – The first sequential rotation angle of the hydraulic conductivity tensor in degrees.
***''Define'' – Turn on if ANGLE1 needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''ANGLE2'' – The second sequential rotation angle of the hydraulic conductivity tensor in degrees.
**''ANGLE2'' – The second sequential rotation angle of the hydraulic conductivity tensor in degrees.
***''Define'' – Turn on if ANGLE2 needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''ANGLE3'' – The third sequential rotation angle of the hydraulic conductivity tensor in degrees.
**''ANGLE3'' – The third sequential rotation angle of the hydraulic conductivity tensor in degrees.
***''Define'' – Turn on if ANGLE3 needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.
**''WETDRY'' – A combination of the wetting threshold and a flag to indicate which neighboring cells can cause a cell to become wet.
**''WETDRY'' – A combination of the wetting threshold and a flag to indicate which neighboring cells can cause a cell to become wet.
***''Define'' – Turn on if WETDRY needs to be defined.
***''Layered'' – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
***If "Constant" is selected from the drop-down, enter a decimal value in the ''Constant'' field to be applied to all cells in the layer(s).
***If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal ''Factor'' value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
***'''Dataset to Array...''' – Click to open the ''Select Dataset'' dialog. Select the desired database(s) and click '''OK''' to close the ''Select Dataset'' dialog.


===IC===
===IC===

Revision as of 20:40, 4 February 2020

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 This contains information about future features.
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MODFLOW
Pre-processing
MODFLOW Commands
Building a MODFLOW Model
Map to MODFLOW
Calibration
Packages Supported in GMS
Saving a MODFLOW Simulation
Importing MODFLOW Files
Unsupported MODFLOW Features
Run MODFLOW
Post-processing
MODFLOW Display Options
MODFLOW Post-Processing Viewing Options
Reading a MODFLOW Simulation
Tutorials
Packages
Flow: BCF6, HUF, LPF, UPW
Solvers:

DE4, GMG, NWT, PCG,

PCGN, LMG, SIP, SOR,

SMS
Other:

BAS6, BFH, CHD1, CLN,

DRN1, DRT1, EVT1, ETS1,

GAGE, GHB1, GNC, HFB1,

HUF, LAK3, MNW1, MNW2,

OUT1, RCH1, RIV1, SFR2,

STR1, SUB1, SWI2, WEL1,

UZF1
v • e

There are many different packages available in MODFLOW 6.

Packages

Temporal Discretization (TDIS) Package

The Temporal Discretization (TDIS) Package dialog

The Temporal Discretization (TDIS) Package dialog is accessed by double-clicking on the TDIS package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Sections list – A list of sections that can be turned on or off:
    • Comments – Turn on to make the Comments section visible.
    • Options – Turn on to make the Options section visible.
    • PeriodData – Turn on to make the PeriodData section visible. This section is on by default.
  • Comments section – Enter general alphanumeric comments. Comments entered here get written at the top of the file, preceded by a '#' symbol.
  • Options section – Temporal options and settings:
    • Time units drop-down – A drop-down menu with the following options for the type of time units:
      • "Unknown"
      • "Seconds"
      • "Minutes"
      • "Hours"
      • "Days" – The default selection.
      • "Years"
    • Start date/time – Turn on to enable setting a start date/time. Click the Date/Time... button to bring up the Date/Time dialog. The time can also be manually entered using "YYYY-MM-DDTHH:MM:SS" format. The "T" in the middle divides the date from the time.
  • PeriodData section – Contains a spreadsheet listing periods. An GMS MODFLOW 6 - Add Row button.png Add Row button is found at the top rigth of the spreadsheet. Right-clicking on the row number in the spreadsheet gives a menu that allows inserting, deleting, copying, or pasting a row. The columns in the spreadsheet include:
    • PERLEN – The length of a stress period. The default value is "1.0".
    • NSTP – The number of time steps in a stress period. The default value is "1".
    • TSMULT – The multiplier for the length of successive time steps. The default value is "1.0".
    • ENDDATE – The end date for that period. This field is not directly user-editable, but will automatically change if the PERLEN value is changed.
    • STEADY-STATE GWF_Model – Turn on if the period is steady state and using the GWF Model.

Iterative Model Solution (IMS)

The Iterative Model Solution (IMS) dialog

The Iterative Model Solution (IMS) dialog is accessed by double-clicking on the IMS package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Sections list – A list of sections that can be turned on or off:
    • Comments – Turn on to make the Comments section visible.
    • Options – Turn on to make the Options section visible.
    • Nonlinear – Turn on to make the Nonlinear section visible. This section is on by default.
    • Linear – Turn on to make the Linear section visible. This section is on by default.
  • Comments section – Enter general alphanumeric comments. Comments entered here get written at the top of the file, preceded by a '#' symbol.
  • Options section
    • PRINT_OPTION – A flag that controls printing of convergence information from the solver. Turn on to make the following print options available from the drop-down:
      • "None" – Print nothing. This is the default when PRINT_OPTION is not turned on.
      • "Summary" – Print only the total number of iterations and nonlinear residual reduction summaries
      • "All" – Print linear matrix solver convergence information to the solution listing file and model specific linear matrix solver convergence information to each model listing file in addition to "Summary" information.
    • COMPLEXITY – Optional. Defines default non-linear and linear solver parameters. Turn on to make the following options available from the drop-down:
      • "Simple" – Default solver input values will be defined that work well for nearly linear models.
      • "Moderate" – Default solver input values will be defined that work well for moderately nonlinear models.
      • "Complex" – Default solver input values will be defined that work well for highly nonlinear models.
    • CSV_OUTPUT – Turn on to specify that the record corresponds to the comma separated values solver convergence output. Enter the desired filename for the output ASCII CSV file in the empty field to the right of the option.
    • NO_PTC – Turn on to disable pseudo-transient continuation (PTC). Only applies to steady-state stress periods for models using the Newton-Raphson formulation.
  • Nonlinear section – A table with two columns: "Option" (giving the name of the option) and "Value", where a value can be entered for the option. The options include the following:
    • OUTER_HCLOSE (length) – Real value defining the head change criterion for convergence of the outer (nonlinear) iterations, in units of length. Default value is "0.001".
    • OUTER_RCLOSEBND – Real value defining the residual tolerance for convergence of model packages that solve a separate equation not solved by the IMS linear solver. Default value is "0.1"
    • OUTER_MAXIMUM – Integer value defining the maximum number of outer (nonlinear) iterations. Default value is "25".
    • UNDER_RELAXATION – Optional drop-down value. Defines the nonlinear under-relaxation schemes used.
      • "None" – Under-relaxation is not used.
      • "Simple" – Simple under-relaxation scheme with a fixed relaxation factor is used.
      • "Cooley" – Cooley under-relaxation scheme is used.
      • "DBD" – Delta-bar-delta under-relaxation is used.
    • UNDER_RELAXATION_THETA – Real value defining the reduction factor for the learning rate (under-relaxation term) of the delta-bar-delta algorithm. Default value is "0.0".
    • UNDER_RELAXATION_KAPPA – Real value defining the increment for the learning rate (under-relaxationterm) of the delta-bar-delta algorithm. Default value is "0.0".
    • UNDER_RELAXATION_GAMMA – Real value defining the history or memory term factor of the delta-bar-delta algorithm. Default value is "0.0".
    • UNDER_RELAXATION_MOMENTUM – Real value defining the fraction of past history changes that is added as a momentum term to the step change for a nonlinear iteration. Default value is "0.0".
    • BACKTRACKING_NUMBER – Integer value defining the maximum number of backtracking iterations allowed for residual reduction computations. Default value is "0".
    • BACKTRACKING_TOLERANCE – Only available if BACKTRACKING_NUMBER" has a value of "1" or higher. Real value defining the tolerance for residual change that is allowed for residual reduction computations
    • BACKTRACKING_REDUCTION_FACTOR – Only available if BACKTRACKING_NUMBER" has a value of "1" or higher. Real value defining the reduction in step size used for residual reduction computations
    • BACKTRACKING_RESIDUAL_LIMIT – Only available if BACKTRACKING_NUMBER" has a value of "1" or higher. Real value defining the limit to which the residual is reduced with backtracking.
  • Linear section – A table with two columns: "Option" (giving the name of the option) and "Value", where a value can be entered for the option. The options include the following:
    • INNER_MAXIMUM – Integer value defining the maximum number of inner (linear) iterations. Default value of "50".
    • INNER_HCLOSE (length) – Real value defining the head change criterion for convergence of the inner (linear) iterations, in units of length. Default value of "0.001".
    • INNER_RCLOSE (length3/time) – Real value that defines the flow residual tolerance for convergence of the IMS linear solver and specific flow residual criteria used. Default value of "0.1".
    • RCLOSE_OPTION – Optional. Defines the specific flow residual criterion used. Default selection of "None". Has the following options:
      • "None" – If selected, an absolute residual (infinity-norm) criterion is used.
      • "Strict" – Specifies that INNERRCLOSE represents an infinity-Norm (absolute convergence criteria) and that the head and flow convergence criteria must be met on the first inner iteration.
      • "L2NORM_RCLOSE" – Specifies that INNERRCLOSE represents a L-2 Norm closure criteria instead of an infinity-Norm (absolute con-vergence criteria).
      • "RELATIVE_RCLOSE" – Spcifies that INNERRCLOSE represents a relative L-2 Norm reduction closure criteria instead of an infinity-Norm (absolute convergence criteria).
    • LINEAR_ACCELERATION – Defines the linear acceleration method used by the default IMS linear solvers. Default selection of "CG". Has the following options:
      • "CG" – Preconditioned conjugate gradient method.
      • "BICGSTAB" – Preconditionedbi-conjugate gradient stabilized method.
    • RELAXATION_FACTOR – Optional. Real value that defines the relaxation factor used by the incomplete LU factorization preconditioners (MILU(0) and MILUT). Default value of "0.0".
    • PRECONDITIONER_LEVELS – Optional. Integer value defining the level of fill for ILU decomposition used in the ILUT and MILUT preconditioners. Default value of "0".
    • PRECONDITIONER_DROP_TOLERANCE – Optional. Real value that defines the drop tolerance used to drop preconditioner terms based on the magnitude of matrix entries in the ILUT and MILUT preconditioners. Default value of "0.0".
    • NUMBER_ORTHOGONALIZATIONS – Optional. Integer value defining the interval used to explicitly recalculate the residual of the flow equation using the solver coefficient matrix, the latest head estimates, and the right hand side. Default value of "0".
    • SCALING_METHOD – Optional. Defines the matrix scaling approach used. Default selection of "None". Has the following options:
      • "None" – No matrix scaling applied.
      • "Diagonal" – Symmetric matrix scaling using the POLCG preconditioner scaling method.
      • "L2NORM" – Symmetric matrix scaling using the L2 norm.
    • REORDERING_METHOD – Optional. Defines the matrix reordering approach used. Default selection of "None". Has the following options:
      • "None" – Original ordering.
      • "RCM" – Reverse Cuthill McKee ordering.
      • "MD" – Minimum degree ordering.

Structured Discretization (DIS) Package

The Structured Discretization (DIS) Package dialog

The Structured Discretization (DIS) Package dialog is accessed by double-clicking on the DIS package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Sections list – A list of sections that can be turned on or off:
    • Comments – Turn on to make the Comments section visible.
    • Options – Turn on to make the Options section visible.
    • Dimensions – Turn on to make the Dimensions section visible.
    • GridData – Turn on to make the GridData section visible. This section is on by default.
  • Comments section – Enter general alphanumeric comments. Comments entered here get written at the top of the file, preceded by a '#' symbol.
  • Options' section
    • Length units – A drop-down with options specifying the length units used for this model:
      • "Feet"
      • "Meters"
      • "Centimeters"
      • "Unknown"
    • No binary grid file (NOGRB) – Turn on to deactivate writing of the binary grid file.
    • X origin (XORIGIN) – Defined by the grid and not user editable here.
    • Y origin (YORIGIN) – Defined by the grid and not user editable here.
    • Rotation angle (ANGROT) – Defined by the grid and not user editable here.
  • Dimensions section – This is an informational section displaying the number of layers (NLAY), number of rows (NROW), and number of columns (NCOL). These are defined by the grid and not user editable here.
  • GridData section – Contains a number of tabs, including:
    • DELR – Column spacing in the row direction. Defined by the grid and not user editable here.
    • DELC – Row spacing in the column direction. Defined by the grid and not user editable here.
    • TOP – Top elevation for each cell in the top model layer.
      • Layered – This option is not available as there is only one top layer.
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the top model layer.
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
    • BOTM – Bottom elevation for each cell.
      • Layered – Turn on if there is more than one bottom layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the bottom model layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • IDOMAIN – Optional. Characterizes the existence status of a cell. Setting a value of "0" for a particular cell inactivates that cell so it is not used in the simulation.
      • Define – Turn on to define an IDOMAIN.
      • Layered – Turn on if there is more than one bottom layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the IDOMAIN layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.

Node Property Flow (NPF) Package

The Node Property Flow (NPF) Package dialog

The Node Property Flow (NPF) Package dialog is accessed by double-clicking on the NPF package under a MODFLOW 6 simulation in the Project Explorer. It contains the following sections and options:

  • Sections list – A list of sections that can be turned on or off:
    • Comments – Turn on to make the Comments section visible.
    • Options – Turn on to make the Options section visible.
    • GridData – Turn on to make the GridData section visible. This section is on by default.
  • Comments section – Enter general alphanumeric comments. Comments entered here get written at the top of the file, preceded by a '#' symbol.
  • Options section
    • Save flows to budget file (SAVE_FLOWS) – Turn on to write cell-by-cell flow terms to the file specified with "BUDGET SAVE FILE" in Output Control.
    • Alternative conductance calculation method (ALTERNATIVE_CELL_AVERAGING) – Turn on to use an alternative method for calculating the conductance for horizontal cell connections.
      • "Logarithmic" –
      • "AMT-LMK" – Conductance will be calculated using arithmetic-mean thickness and logarithmic-mean hydraulic conductivity.
      • "AMT-HMK" – Conductance will be calculated using arithmetic-mean thickness and harmonic-mean hydraulic conductivity.
    • Cells with negative ICELLTYPE are confined (THICKSTRT) – Cells having a negative ICELLTYPE are confined, and their cell thickness for conductance calculations will be computed as STRT-BOT rather than TOP-BOT.
    • Calculate vertical conductance (VARIABLECV) – Vertical conductance will be calculated using the saturated thickness and properties of the overlying cell and the thickness and properties of the underlying cell.
      • Dewatered (DEWATERED) – Vertical conductance is calculated using only the saturated thickness and properties of the overlying cell if the head in the underlying cell is below its top.
    • Perched (PERCHED) – When a cell is overlying a dewatered convertible cell, the head difference used in Darcy's Law is equal to the head in the overlying cell minus the bottom elevation of the overlying cell.
    • REWET – Turn on to activate model rewetting.
      • WETFCT – A factor included in the calculation of the head, initially established at a cell when that cell is converted from dry to wet.
      • IWETIT – Iteration interval for attempting to wet cells.
      • IHDWET – Integer flag that determines which equation is used to define the initial head at cells that become wet.
    • Use XT3D formulation (XT3D) – Turn on to use the XT3D formulation.
      • Add XT3D terms to right-hand side (RHS) – The XT3D additional terms will be added to the right-hand side instead of the coefficient matrix.
    • Save specific discharge (SAVE_SPECIFIC_DISCHARGE) – Turn on to calculate x, y, and z components of specific discharge at cell centers and write them to the cell-by-cell flow file as specified with "BUDGET SAVE FILE" in Output Control.
  • GridData section – Contains a number of tabs, including:
    • ICELLTYPE – A flag for each cell that specifies how saturated thickness is treated.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • K – The hydraulic conductivity.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • K22 – The hydraulic conductivity of the second ellipsoid axis.
      • Define – Turn on if K22 needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • K33 – The hydraulic conductivity of the third ellipsoid axis.
      • Define – Turn on if K33 needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • ANGLE1 – The first sequential rotation angle of the hydraulic conductivity tensor in degrees.
      • Define – Turn on if ANGLE1 needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • ANGLE2 – The second sequential rotation angle of the hydraulic conductivity tensor in degrees.
      • Define – Turn on if ANGLE2 needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • ANGLE3 – The third sequential rotation angle of the hydraulic conductivity tensor in degrees.
      • Define – Turn on if ANGLE3 needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.
    • WETDRY – A combination of the wetting threshold and a flag to indicate which neighboring cells can cause a cell to become wet.
      • Define – Turn on if WETDRY needs to be defined.
      • Layered – Turn on if there is more than one affected layer. Select the desired layer from the drop down in order to edit the array (if "Array" is selected from the drop-down).
      • If "Constant" is selected from the drop-down, enter a decimal value in the Constant field to be applied to all cells in the layer(s).
      • If "Array" is selected from the drop-down, a user-editable array appears below the drop-down. Enter a decimal Factor value to the right of the drop-down. The individual elements of the array are multiplied by the factor value after they are read.
      • Dataset to Array... – Click to open the Select Dataset dialog. Select the desired database(s) and click OK to close the Select Dataset dialog.

IC

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


CHD

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


DRN

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


EVT

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


GHB

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


GNC

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


HFB

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


LAK

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


MAW

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


MVR

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


OBS

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


OC

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


RCH

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


RIV

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


SFR

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


STO

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


UZF

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


WEL

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


ZONE FILE

File:GMS MODFLOW 6 - REPLACE dialog.png
The REPLACE dialog


Date/Time Dialog

The Date/Time dialog

The Date/Time dialog allows setting the date and time for a number of different options through selecting the desired date from a calendar:

  • The Left green arrow button.png Left and Right green arrow button.png Right arrows allow the user to change to one month earlier or later (respectively).
  • The month name at the top of the calendar is a drop-down menu allowing the user to select the desired month.
  • The year at the top of the calendar allows the year to be changed up or down using the Increment up and down arrows.png Increment Up/Down buttons.
  • The time is either manually entered in "HH:MM AM/PM" format, or selected using the Increment up and down arrows.png Increment Up/Down buttons.

The following buttons are found at bottom of the dialog:

  • OK – Saves all changes and closes the Date/Time dialog.
  • Cancel – Discards all changes and closes the Date/Time dialog.


External Link


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GMS – Groundwater Modeling System
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