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  1. Yesterday
  2. Hi Bruce, can I ask you if you find out the solution for this issue? I am having probably very similar problem: I have observation values from different piezometers for which varies the filter depth. Different filterdepths falls into different modelling layers, therefore I look for solution how to obtain the residuals for some observation piezometers from first layer, for different ones from second layer and so on. So far I obtain in GMS always only one residual, and I am neither sure from which layer it is.... Do you, or anyone else have suggestion how to solve this problem? Thank you
  3. Earlier
  4. I think that the problem ended up being a conflict between GMS and our firewall "Comodo". GMS creates 5 or 6 batch files in the Temp directory every time you zoom or pan the display. It then executes the batch files sequentially to redraw the bitmap. Our firewall would send up a popup every time GMS executed one of those batch files because batch files can be a big security risk. These popups would often occur 300 to 500 times during a single GMS session. I tried turning the firewall off to avoid the warnings, and that is what caused GMS to stop displaying bitmapped graphics completely. But, I found that by uninstalling the firewall completely from the workstation, GMS started displaying bitmapped graphics again. Turning the firewall off was not enough, you need to uninstall it completely from your computer. So if you are having trouble displaying bitmapped graphics, you need to uninstall your firewall. Not a great thing to do, but you don't have much of a choice with the weird way bitmaps are redrawn in GMS. Hopefully this is the fix and GMS will continue to work. I will repost if the problem comes back.
  5. Thanks for the response. The drains are mapped via polygons and the drain elevation raster pixels are ~253m x 253m (derived from smoothed 1arcsec DEM) and the FD grid cells are 250m x 250m. Where the drains are applied are relatively flat, so I was hoping for better agreement. The seepage face option sounds promising - much easier to implement and less data dependence.
  6. How are the drains mapped? If they are from arcs, the elevations will not necessarily follow the variation in topography, especially if topography is irregular and node spacing wide relative to the grid. If as a polygon, for the same reason, elevations may not match if topography is irregular and the grid and raster resolution are not similar. Solutions are : Use the automatic layer range allocation with "Auto-assign BC to one cell", so they can go into the layer below if below the top layer (if that is conceptually acceptable) If using arcs, redistribute vertices more finely along the arc, to a similar spacing to the grid, convert them to nodes so it can have more variation over distance. Simplest and most robust option is to use a Seepage Face rather than Drain, so that the drain elevation in the grid is set relative to the upper cell top elevation. In your case set the “elevation offset” set to -1m.
  7. I have created a number of drains and getting 160 errors were the mapping of the drain elevation is bad. The raster value is the (surface elevation - 1m) [highlighted in lilac] is 13.1m. Cell elevation (based on surface elevation raster) is 14.18 m, bottom is 12.0. The mapped drain elevation is 11.3. WTH? I've deleted and recreated and mapped MODFLOW 3 times, no change.
  8. Hi everyone! I use the wms 9.0. I load dem (srtm) and I reproject it to local projection in wms. I encountered problem. When I want save the file, it gives message “out of memory” Please, how resolve this problem?. Notice that my computer has good performance. Thank you in advance.
  9. My solution was to use QGIS to first create a raster from the DEM that followed the rules above. Then I created a polygon shape for the entire grid and then used the Difference algorithm to cut away the other features in the region that are represented by polygon shapes, one by one, first the ocean, rivers, green and red areas, leaving a polygon that represented the exposed clay layer at the surface. I imported the polygon shapes and used the raster to define the CHD head stage value.
  10. Hi all, I Created a US Grid for a former MODFLOW 2005 model. When trying to run the model the executable crashed and the error message is *.hed file formatted incorrectly. When I look at the hed file, it is empty (0 KB). checking the simulation before running results with no errors. Any suggestions ? Thanks, Hila
  11. Hi all, I need to change hydraulic conductivity and porosity during my simulation running with PHT3D. As there are no transient material properties in the software, I want to run the model within a period of time (step 1) and then import the results from step 1 and change the material properties and then run the model as step 2. Do you think that I can do it and how? How I can import the results of previous model run to the new one?
  12. The files are local, but are on a different drive than the model files. I will try moving them to the GMS model directory and see if that helps.
  13. I experienced the same problem when working with the TIFF on the server. I saved the files locally on my computer instead, which solved the display problem.
  14. You can just select cells manually and change the conductivity in the properties dialog....or set up a coverage with polygons to change just small areas when it maps over to MODFLOW. Test it out so that you can confirm everything else remains the same when you map it over.
  15. Hi all I constructed my model using HUF flow package and i started calibrating the model. I need to change locally the hydraulic conductivity at some regions for calibration process, can this be done?? Another th ing that i wounder why when i select any cell in the grid , i find that its material assigned as limestone in the whole model (the figures are attached)
  16. thank you very much for your reply when i made my grid cell larger the solid was created with no error
  17. Got to Display Options > Map and check the fill box under polygon to show type. Check ID under polygon to show number. Shift Q will show boundary in the mesh IF you have both the mesh and material coverage in the same simulation. Hope this helps!
  18. How can export MODFLOW Project developed using GMS to Visual Modflow and Groundwater Vista.
  19. JPA

    Drain elevation

    I try to elevate a drainage according to a TIN. The drainage seems to end up right when it is in "Map Data" but when I pass it on to Modflow, the drainage falls into the layers I selected under "Default layer range" in the Coverage setup. Has anyone experienced the same problem and can help me out?
  20. Please make your solids bit larger than the conceptual model domain. When solids do not completely cover the grid, this error can occur.
  21. Please make your solids bit larger than the conceptual model domain. When solids do not completely cover the grid, this error can occur.
  22. One major feature of MOFLOW-USG - besides the horizontal local refinement - is the possibility of being able to split cells vertically instead of splitting complete layers. At the moment, you can only split complete layers vertically, but it will be very helpful, being able to split only selected cells vertically, no matter in which layer you are. Being able to create a conceptual model, where you can create such a model (e. g. vertical and/or horizontal refinement around a well, vertical and/or horizontal refinement along selected boundaries like rivers etc.) automatically will be very helpful, also.
  23. Hello I have a problem when i run Simulation and it stops in middle of running FAILURE TO MEET SOLVER CONVERGENCE CRITERIA BUDGET PERCENT DISCREPANCY IS -141.2903 STOPPING SIMULATION can anyone help me with this issue? Thanks
  24. hello everybody i have a problem with my model and i hope you could help i have complex stratigraphy. so first i used Modflow-USG , you can see the figure of my U-grid in the attached figure, I tried to add a recharge at the top cell but i couldnot >>I searched and the solution was adding a new upper inactive layer, but i could not add it , i hope you help me do this and tell me the steps >> i also tried modflow 2000 but in the step of solid-..> modflow it gave me an error similar to that i cannot find a solution please help
  25. I am working on a groundwater model here in New Mexico. One important component is the southern and western boundaries of the model, where steep canyon walls seep water from the volcanic aquifer, substantially contributing to river flows. I intend to model the boundary condition at the river with STR2, such that recharge and discharge interactions between groundwater and the channel can be calibrated. However, I'm not sure how to handle the canyon walls. Adjacent flooded cells, while conceptually accurate, I believe to not deliver their discharge down (topographic) gradient. I'm interested in the seepage face package, but I am not seeing much documentation or discussion on it and many folks are referring to it as a boundary condition in itself. Can anyone clarify what scheme might work for this, and perhaps share a couple of links? Thank you!
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