This is a top level workflow. This workflow includes all of the specific workflows needed in creating a general MODFLOW 6 project using the grid approach. Newer and infrequent GMS users should start here.
To build a MODFLOW 6 grid approach model in GMS, use the following steps:
Expand1. Start GMS.
|
Expand1. Start GMS, or clear existing projects in GMS.
|
- If GMS is already running, select File | New.
- A new project can also be started by clicking New .
|
Expand2. If necessary, register or update GMS.
|
Expand1. Register GMS and components.
|
- Launch the GMS Registration Wizard.
- Follow the Registration Wizard instructions.
- Review the registered components in the Aquaveo License Registration dialog.
|
|
|
Expand2. Import data.
|
Expand1. Gather and open image files.
|
Images are imported into the GIS module in GMS.
Expand1. Open local images.
|
- Load images from local computer files using the File | Open... command.
- Alternatively, drag and drop the file into the Graphics Window in GMS.
|
|
Expand2. Gather and open geometric data files.
|
|
|
Expand3. Review and edit elevation data.
|
Expand1. Review elevation data for errors.
|
Expand1. Use the Dataset Info dialog.
|
- 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.
|
Expand2. Use contour display options.
|
- 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.
|
|
Expand2. Remove erroneous points.
|
- After reviewing the imported data, points covering regions of no data should be deleted.
|
|
Expand4. Create a UGrid.
|
- Create a 3D UGrid in one of the following ways:
Expand1. Create a 3D UGrid from scratch.
|
- 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.
|
Expand2. Create a 3D UGrid from a coverage.
|
- 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.
|
|
Expand6. Set up package parameters.
|
- Set up global and output package parameters: TDIS, IMS, DIS, IC, OC.
- Set up flow package parameters: NPF, HFB, GNC.
- Set up optional package parameters, including boundary conditions such as: CHD, GHB, RIV, SFR, etc.
|
Expand7. Run MODFLOW 6 Simulation.
|
- In the Project Explorer, right-click on the MODFLOW 6 simulation and Save Simulation and Run.
- The Simulation Run Queue dialog will appear; allow the simulation to run to completion.
- When the simulation has finished successfully, click Load Solution.
|
Expand8. Visualize the Solution.
|
Expand1. Change display options.
|
Expand2. View display.
|
- 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.
|
Expand3. Adjust display.
|
- 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.
|
|
Expand2. Change contour options.
|
- 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.
|
Expand3. Create a plot.
|
Expand2. Select available plot type.
|
Expand1. Computed vs. Observed Data plots.
|
|
Expand2. Residual vs. Observed Data plots.
|
|
|
|
Expand4. Create an animation.
|
- 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.
|
|