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Hydrology

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  1. 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.
  2. 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.
  3. I have been working with a GMS model with two TIFF files for background information. After several days of working correctly, the model stopped displaying the imagery. It always took a long time to display them, but after 30 sec to a minute they would display. I deleted the images and reopened them but GMS still does not diaplay them. I tried closing GMS and reopening it, but GMS will still not display them. Does anybody know what is causing this, or have a workaround?
  4. Here is the screen capture of the model crash.
  5. I have a weird problem. I have a transient model that runs fine if I set the Output Control to "Output at last time step of each stress period". But when I set Output Control to "Output At Every Time Step", the program immediately crashes when I try to run it. Has anybody run into this problem before? I have tried to attach a screen capture of the crash error, but the forum wont let me even though it is only 112KB. The MODFLOW output file just contains the first the few lines of the run header.
  6. Thanks Michal, I will experiment with that and see if that approach gives me what I need.
  7. Hi Bri, thanks for the response. I am familiar with the references that you indicated. I often use the specified head and head dependent flux boundaries. I havent used the specified flux boundary, but that is not what I am looking for. What I am trying to set up is a boundary condition that will allow free flow across the boundary without restriction, so that the flow across the boundary will vary in time, depending on the amount of water that i pump into or out of the model domain. I don't want to necessarily fix the head across the boundary either because I think that would overly constrain the model. Not applying a boundary condition to that part of the model will create a no-flow boundary condition, and that is what i am trying to avoid. Is there a way to achieve the condition that I am looking for?
  8. Is the default boundary condition in MODFLOW a no flow boundary? If so how would I create a boundary condition that allows flow, but has a fixed head at either end of the boundary?
  9. I thought that might be the case, thanks.
  10. Does a horizontal flow barrier block the entire layer based on what layers your barrier coverage is assigned to, or can you set the bottom elevation of the barrier by clicking on the attributes in map view and setting the bottom elevation in the Z column. I have not seen much on line that has given me a definitive answer. All of the descriptive drawings always show the whole layer being blocked by the barrier, but that may be just for simplicity.
  11. I will try to see if they can do this. Since this type of program behavior fits a classic malware attack profile, anyone running GMS has been banished to a trailer behind the office where there is no internet connection or connection to the server. So now we have no direct access to the project files on the server, and we are not allowed to put anything developed on this computer back on the server. We have never had this problem with previous versions of GMS, so I will see if we can go back to an older version of GMS. Below is a typical script from the batch files. REM -- Merge images including a created background color image. REM -- Created a 1 pixel image with display extents. "c:\software\hydrologic\gms 10.4 64-bit\gdalbin\gdalwarp.exe" --config GDAL_DATA "c:\software\hydrologic\gms 10.4 64-bit\gdalbin" -of GTiff -dstalpha -te 6005738.0000000000000 2110135.0000000000000 6021445.0000000000000 2120129.0000000000000 -ts 1 1 "R:\Temp\GMS_19140\im00005_action1out.tif" -overwrite "R:\Temp\GMS_19140\im00031_image2out_image1merge1onePixel.tif" REM -- Give the 1 pixel image the background color. "c:\software\hydrologic\gms 10.4 64-bit\gdalbin\gdaldem.exe" --config GDAL_DATA "c:\software\hydrologic\gms 10.4 64-bit\gdalbin" color-relief "R:\Temp\GMS_19140\im00031_image2out_image1merge1onePixel.tif" "R:\Temp\GMS_19140\im00031_image2out.tif_image1merge2map.txt" "R:\Temp\GMS_19140\im00031_image2out_image1merge3Background.tif" REM -- Combine 1 or more images using current display view. "c:\software\hydrologic\gms 10.4 64-bit\gdalbin\gdalwarp.exe" --config GDAL_DATA "c:\software\hydrologic\gms 10.4 64-bit\gdalbin" -of GTiff -te 6005738.0000000000000 2110135.0000000000000 6021445.0000000000000 2120129.0000000000000 -ts 1614 1027 "R:\Temp\GMS_19140\im00031_image2out_image1merge3Background.tif" "R:\Temp\GMS_19140\im00005_action1out.tif" -overwrite "R:\Temp\GMS_19140\im00031_image2out.tif"
  12. I have just upgraded to GMS 10.4 and I am having a compatibility issue with GMS and our Network security. Apparently with 10.4, whenever a graphics file, like an aerial photograph, is displayed, the program creates a temporary batch file that it executes and then erases. This happens for each aerial file you have in your project, and the batch files are created each time you pan or zoom your display. These batch files are considered security risks by our security software, and I get a pop-up asking me to allow/not allow the batch file to run each time I move my display. Each batch file has a different random name for each time the display is redrawn, so we cannot add an exception to our security software for the batch file. A typical name is C\Temp\GMS_21380\img00247_image2.out.bat. I have 9 aerial files in my project so I have to click OK on the security pop ups 100 or more times during a working session with GMS. Is there any way to have GMS not produce these batch files.
  13. Are the pumping rates interpolated between time periods? I have pump totalizer data on irregular time steps and I am trying to make sure that I am representing them correctly in the pump time series. In the example below I show the date and the totalizer readings in (gals). I convert the total gals to an average gpm computed over the time period since the last reading, then to a ft3/day for input into modflow. Does modflow interpolate the flow between time steps, or does it use a specified flow rate for each time step until another one is specified (stepped pump rate). For example is the pump rate on 3/13/12 in the example below 0.00 ft3/day, or is it 77.33 ft3/day? I want to make sure that I get the mass balance for pumped volume correct. Date gals) (gpm) (ft3/day) 3/12/12 0.0 0.0 0.0 3/15/12 5,212.0 1.2 -232.3 3/16/12 8,674.0 2.4 -462.8 3/19/12 9,752.0 0.2 -48.0
  14. Thanks. I will try that.
  15. Is there a way that I can rotate the display so that north is not straight up? I have an existing model and I would like to rotate it around 45 degrees before I make an animation of groundwater drawdown due to pumping.
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