This is a top level workflow. This workflow includes all of the specific workflows needed in creating a general MODFLOW project using the grid approach. Newer and infrequent GMS users should start here.
To build a MODFLOW grid approach model in GMS, use the following steps:
Expand1. Start GMS.
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Expand1. Start GMS, or clear existing projects in GMS.
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- If GMS is already running, select File | New.
- A new project can also be started by clicking New .
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Expand2. If necessary, register or update GMS.
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Expand1. Register GMS and components.
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- Launch the GMS Registration Wizard.
- Follow the Registration Wizard instructions.
- Review the registered components in the Aquaveo License Registration dialog.
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Expand2. Import data.
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Expand1. Gather and open image files.
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Images are imported into the GIS module in GMS.
Expand1. Open local images.
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- Load images from local computer files using the File | Open... command.
- Alternatively, drag and drop the file into the Graphics Window in GMS.
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Expand2. Gather and open geometric data files.
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Expand3. Review and edit elevation data.
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Expand1. Review elevation data for errors.
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Expand1. Use the Dataset Info dialog.
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- Find the "Z", "elevation" or "depth" datasets on the geometric object (mesh, TIN, grid, raster) that is being reviewed
- Right-click on elevation data and select Properties.
- Review information in the Dataset Info dialog to see that the range of values are as expected.
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Expand2. Use contour display options.
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- Turn on Contours in the Display Options dialog and set contour options. The "Color Fill" option is recommended for this.
- Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist).
- Verify that the region being modeled is covered by the elevation/depth data and there are no holes.
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Expand2. Remove erroneous points.
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- After reviewing the imported data, points covering regions of no data should be deleted.
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Expand4. Create a grid.
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- Create either a 3D grid or a 3D UGrid by completing one of the following:
Expand2. Creating a 3D UGrid.
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- Create a 3D UGrid in one of the following ways:
Expand1. Create a 3D UGrid from scratch.
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- Right-click in the Project Explorer and select New | UGrid 3D....
- In the New UGrid dialog, enter the information for the X-, Y-, and Z-Dimension of the grid.
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Expand2. Create a 3D UGrid from a coverage.
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- Right-click on the desired coverage and select the Map To | UGrid command.
- In the Map → UGrid dialog, set the Dimension drop-down to "3D".
- Enter the rest of the information for the grid, including the X-, Y-, and Z-Dimension information.
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Expand5. Set up the MODFLOW simulation.
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Expand8. Visualize the Solution.
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Expand1. Change display options.
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Expand2. View display.
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- Use the Rotate , Pan , and Zoom tools.
- Use the View menu commands found in the Display menu.
- Use the Frame command to center and resize the display as needed.
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Expand3. Adjust display.
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- Display may need to be adjusted during the remainder of the project.
- Use the Display Options dialog and viewing tools as needed.
- Use the Frame command to center and resize the display as needed.
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Expand2. Change contour options.
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- Turn on Contours in the Display Options dialog and set contour options. The "Color Fill" option is recommended for this.
- Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist).
- Verify that the region being modeled is covered by the elevation/depth data and there are no holes.
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Expand3. Create a plot.
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Expand2. Select available plot type.
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Expand1. Computed vs. Observed Data plots.
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Expand2. Residual vs. Observed Data plots.
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Expand4. Create an animation.
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- Select a solution dataset and use the Display | Animate menu command.
- Use the Animation Wizard to specify the animation parameters.
- Save and view the animation file.
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