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Michael Kennard

GMS Development Team
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Everything posted by Michael Kennard

  1. Porosity in MODFLOW and MT3D

    Also, the MODFLOW porosity is used by MODPATH.
  2. Until this is implemented in GMS, our current recommended workaround is to use MODFLOW-USG with a locally refined grid.
  3. Numbering of Streams (SFR2) when connected with lakes (LAK3)

    This has been fixed and will be in the next release.
  4. Model Checker with SFR2 Package

    I've added this to our todo list.
  5. Importing Borehole data from txt files

    It could be that the borehole module is not enabled in your licence and that is why it doesn't appear in the drop down menu.
  6. Importing TIN's (ARCMAP .adf) into GMS

    GMS doesn't import this type of file. You will need to export the TIN as points or a shapefile that GMS can read.
  7. Coordinate Significant Figures

    GMS uses double precision to store location data, not just the first 2 or 3 sig figs.
  8. SFR and Lake Package

    This can be done in the SFR2 Package dialog. The table of segments lists OUTSEG and IUPSEG and can be edited with the negative lake IDs.
  9. Cell re-activation

    I'm assuming you're dealing with MODFLOW. You can edit the IBOUND array and make all values 1.
  10. ETS package for Modflow-USG

    I would suggest contacting the authors of MODFLOW-USG, Sorab Panday and Chris Langevin to make your request.
  11. Comments field in databases and coverages

    This has been implemented in the next version of GMS.
  12. When the "Create Particles at Wells" command is used, GMS could have the starting locations remember the name of the well that they were created around and include that information in the Pathline Report.
  13. This has been implemented in the next version of GMS.
  14. Export 3D grid to shapefile for active/inactive cells

    This has been implemented and will be in the next version of GMS.
  15. Convert Pathline TimeMarkers to 3D-Points

    This has been implemented and will be in the next version of GMS.
  16. Mapping Material Properties in GMS

    In the LPF (or BCF) package, do you have the "Layer property entry method" set to "Use material IDs"?
  17. CLN Process

    Yes, we have definite plans to expand the CLN capabilities in GMS, but it's too soon to give you a projected release date. Thanks for your interest.
  18. Grouping Particle set by wells

    You can only identify the cell that the particle started from. I can see how the GMS code could be modified to keep track of the name of the well that the particles were created around if the "Create Particles at Wells" command is used, and include that info in the pathline report, but it's not programmed to do that currently. I'll create an item in the feature requests forum.
  19. Example from FEMWATER tutorial

    In recent versions of GMS, the command can be found in the Mesh menu, under Convert To. If you don't see the Mesh menu (on the main menu bar), you may not be in the 2D Mesh module. The main menu changes depending on what module you are in. There is a module toolbar that let's you switch modules, and the module will also change if you click on the mesh in the Project Explorer.
  20. Run MODPATH in transient model

    Everything is the same, but GMS does not run MODPATH automatically. You must save, then click the Run MODPATH command under the MODPATH menu. The reason GMS doesn't run MODPATH automatically for transient models like it does for steady state models is because MODPATH can take a long time to run with some transient models.
  21. comparing datasets from different grids

    If you are using 3D grids (not UGrids), and the number of rows and columns match, you can create a 2D grid that matches the 3D grid in XY. Then you can use the Grid|3D data -> 2D data command to create a dataset on the 2D grid from the 3D grid. You probably want the "Maximum value in ij column" option. You'll need to do this for each project, then export the 2D dataset from one project and import it into the other. Then you can use the Data Calculator to subtract one dataset from the other, giving you the difference. Let me know if you need more step-by-step instructions.

    Support for the SWI2 package was added in GMS 10.1 and a tutorial exists. You can get the tutorial via the learning center. It's also included in the tutorials zip file on the downloads page.
  23. Exporting Grid Cell Area to Spreadsheet

    I don't think there's any easy way to do this, but here's an idea, although it probably requires some massaging of the data. Convert the 3D Grid to a UGrid and save the MODFLOW data. In the DISU file, item 6 is the "Area(NDSLAY)" array. These values should be in the proper order but there may be several per line. Massage those values into one per line, then copy/paste into a 3D Grid dataset (View Values). Then in the recharge or HK layer dialog, do Dataset -> Array and pick your datasets and your values will appear the way you want. If this isn't clear I can go into more detail.
  24. No, it doesn't already exist. Thanks for the suggestion.
  25. How to refine the grid at the locations of observation heads

    If you are using a conceptual model, you can create the grid with refinement around points. The MODFLOW Conceptual Model Approach I tutorial includes an example of grid refinement (section 8). You turn on the Refinement attribute in the Coverage Setup dialog and then you specify the refinement at the points. If you want to modify the existing 3D grid, you can use the Add i boundary and Add j boundary tools to split a grid row or column You can also use the Select node tool to drag a grid intersection and resize rows and columns.