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iMOD User Manual version 5.2 (html)


7.8Import Tools


7.8.1Import SOBEK Models

WHY?
SOBEK models are surface water models made with the SOBEK suite software available from Deltares. SOBEK models may be imported in iMOD to be used with iMODFLOW.

WHAT?
The available SOBEK files are converted to iMOD format and saved as ISG-file. All SOBEK Network, Profile and His-files are converted

Note: This function is only available in the X32-bits version of iMOD, in the X64-bits version of iMOD this functionality is greyed-out. This functionality is supported also by iMOD Batch.

HOW?
Select the option Toolbox from the main menu and then choose the option Import Sobek Model to start the Configure the SOBEK Import window.

Example of Configure the SOBEK Import window:

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(1)

Give the *.ISG to be created
Enter the name of the ISG-file to be created. All information from the SOBEK files will be saved in one ISG-file. The location of the ISG-file can be chosen with the save button.

(2)

Locate the Sobek Network files
iMOD searches for network.tp, network.cr, network.cp, network.gr, network.st, profile.dat, profile.def and friction.dat. Select the name of the network file and iMOD will search all other files in the same folder.

(3)

Give the CALCPNT.his or equivalent
Select the HIS file that contains the computed waterlevels at the SOBEK calculation points.

(4)

Give the STRUCT.his / equivalent or leave blank
Select the HIS file that contains the computed waterlevels at the SOBEK structures points. Leave this blank when not required or available.


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Open
Click this button to select the required file.

Import

Click this button to import the SOBEK configuration into the ISG-file.

Cancel

Click this button to close the window

Help…

Click this button to start the Help functionality.


7.8.2Import Modflow Models

WHY?
MODFLOW models made outside iMOD may be imported in iMOD to be used with iMODFLOW.

WHAT?
An existing standard MODFLOW configuration is converted into iMOD files (e.g. IDFs, IPFs and GENs). The conversion works for three MODFLOW versions: 1988, 2000 and 2005. iMOD will convert the MODFLOW packages once the location of one of the packages is defined. The conversion will stop in case no BAS-file (1988 version) or NAM-file (2000 and 2005 version) is found.

This functionality is supported also by iMOD Batch.

HOW?
Select the option Toolbox from the main menu and then choose the option Import Modflow Model to start the Configure the Modflow Import window.

Configure the Modflow Import window:

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(1)

Modflow configuration to be imported
Select the year of the Modflow version (1988, 2000, 2005)
Check the box at Include 4\({}^{th}\) column with river infiltration factors in case the RIV-package has a 4\({}^{th}\) column defining the ratio in conductance between infiltration and drainage

(2)

Locate one of the Modflow files (e.g. modflow.bas, modflow.drn)
Select the name of one of the Modflow input files and iMOD will search all other files in the same folder. iMOD will look for a BAS-file for the 1988 version and will look for a NAM-file for the 2000 and 2005 versions.
A remark is shown in case the BAS-package or NAM-package input file is not found.

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Open
Click this button to select the required file as defined in option (1).

(3)

Lower-left coordinate of the Model (xmin, ymin) in meters:
Enter the X- and Y-coordinate of the lower left corner of the model.

(4)

Start date of the simulation (only used by transient simulation configurations)
Enter the date of the first time step by selecting the appropriate day, month and year. This is required for transient models only.

(5)

Name of the runfile to be created (will be placed in …\runfiles)
Enter a name for the runfile to be created in the RUNFILES folder of the iMOD_USER folder). For more information on the runfile see section 7.9.

(6)

Methodology to handle multiple package data within single modelcells:
Select the appropriate option:

  • • Sum: all existing package information is summed into a single modelcell. This is the default. Whenever more elements occur in a single modelcell, they will be lumped together to form one value.

  • • Retain: all existing package information in a single modelcell is extracted and stored in individual iMOD files.

Import

Import the MODFLOW configuration into iMOD
The iMOD model files will be stored in the iMOD_USER\MODELS folder.

Close

Click this button to close the window.

Help…

Click this button to start the Help functionality.