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Everything posted by Hisham

  1. How can one create an HK layer in AHGW from a model that uses pilot points?
  2. Thanks heaps Doug Gallup. This took care of the error.
  3. I've set up the correct version of AHGW with ArcGIS 10.4 but I am unable to create a world file to import a mudflow model. Any ideas or suggestions?
  4. I have a "neatly" calibrated (heads and flows) MODFLOW 2005 model. When I try to forward run it does not converge! I can't think of a reason for that. When I force the forward model to converge, it shows dry cells that didn't show in the parameter estimation run. However, when I use MODFLOW Newton, the result is the same from parameter estimation and forward runs. What could the reason be for the non-convergence of the MODFLOW 2005 forward run? What is the reason for differing results between the MODFLOW 2005 parameter estimation and forward run (head and dry cells)? I'll be appreciative for any thoughts.
  5. Thanks Michael for your reply. This was what I did but didn't seem to work. So had to re-build the grid agian!
  6. How can one re-activate cells after being inactivated using a polygon or because they are thin cells?
  7. I've been using GMS for stratigraphic modelling for a while, but I am new to AHGW. I wonder, does AHGW have the ability to determine areas where a certain layer can or cannot occur? I mean something similar to the Horizons Conceptual Model feature in GMS? I rally appreciate any advice about this.
  8. Thanks Doug... I understand that you can use the clip and fill attributes to control your layers, however, I am working on a large area and something similar to the Horizons Conceptual model approach would have been easier for me to use..
  9. I completed the tutorials with no issues at all. However, when I use real-world data things don't run well. I've got a couple of questions and I hope someone would be able to answer them: AHGW requires a projected [not geographic] projection system. Is this correct? The horizontal and vertical coordinate systems need to be compatible. Is this true? Thanks in advance for the help.
  10. Solved === Solved === Solved === Solved === I got rid of the vertical coordinates all together and things now work 100%. Took me days to get here, but certainly worth it
  11. I tried endless times using all possible coordinate systems, but it seems I am missing something. When I run the XS2D Wizard I get the nasty three error messages attached. Any ideas from anyone.
  12. Hi there... A colleague of mine has nitrogen loads in kg/ha/year and he wants to input that in MT3D as mass rather than concentration. What units should he convert his values to? Thanks
  13. The default is now flow, so you don't need to assign a BC there. If you do then it shows as wells with zero flow! I struggled with this first but then got used to it. Hope this helps
  14. When you go to open a project to add its contents into another one, the "Import into current project" is disabled (greyed) in the 7 Dec 2015 version. Is there a work around or fix?
  15. Downloaded the latest nightly build. Raster interpolation to RCH works fine.
  16. I had the same problem, so I am so glad to learn that it's been resolved. I will download the newest release and check out. I also have an image for nitrate concentrations. Is there a way to interpolate that to MT3DMS? I am thinking of a workaround where I interpolate the image into recharge then copy the recharge data to the clipboard and past in the concentration grid. But I think GMS should enable direct interpolation from raster/image to MT3DMS.
  17. I am trying to combine a stratigraphic model that has a number of aquifers with T-PROGS model. I decided to use HGUID to specify the material in the stratigraphic model and SoilID to specify the material in T-PROGS simulations. Do I have to define material for all SoilIDs and all HGUIDs? e.g. SoilIDs ====== Clay Silt Sand Gravel Peat Silty sand HGUIDs for ======== Aquifer 1 Aquifer 1 Aquifer 2 Aquifer 3 Aquifer 4 Aquifer 5 I'll be appreciative for any ideas on how to handle this situation. Thanks
  18. Hi All I want to develop a ModAEM solution which has a river as its downstream boundary. The problem is that ModAEM requires the definition of a polygon for the model area in a layer where one must select "Use to define model boundary (active area). When one does this the "Sources/Sinks/BCs" option are automatically reduced and the check box for "River" disappear. Hence, it is practically impossible to use a river as a boundary for the model. Please note that I do not want to define the river as a specified head boundary. This is a problem that I have in a number of areas that I am studying and, hence, I will really be appreciative for any thoughts. Cheers
  19. I developed solids that work well on my laptop. When I transferred the files to my work computer, the material and legend did not show on the screen. Then the solids showed, but only legend text (no graphics), and then the material disappeared again. This GMS model is just behaving randomly on the work computer, which I do not have any issues with. I had the mode saved on a networks server but also transferred it to the local drive just in case. Nonetheless, I continue to have the same problem. I modified the model on the work computer where I was unable to see the solids and saved the model. Then I copied the model on a flash drive and back to the laptop, and it opened without a problem. IT here can't help and they think it's a software issue! Could anyone help please?
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  21. I've got a shape file with the area's geology. How can I display this as GMS coverage using units specified as Materilas?
  22. Hello Everybody I am working on a regional lithological model for an area of about 110 x 45 km (about 69 x 28 mile). There is a 1:250,000 geological map and about 1,200 well logs in the area. The groundwater system consists of Quaternary sequence of fine marine and coarse alluvial strata. Obviously, some strata will have limited extent in such situation. The quality of available well logs is such that they are very difficult to correlate. My approach is to use topographic elevations at the outcrop of various strata to establish a structural contour map (i.e. horizons representing top levels of layers). Any suggestions on how can I extend interpretation of topo data beyond the surficial extent of the layers, i.e. below the ground? Also, my topo data comes from LiDAR and topo maps and hence quite extensive. I combined them in equally spaced points (100 m) that cover the entire area (approximately 450,000 – 500,000 points). I mapped these to a TIN. Two questions here: (1) is this accuracy practical, and (2) what would be good specs for a computer for such a task. Sorry for such a long post.