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Chris Smemoe

WMS Development Team
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Chris Smemoe last won the day on March 1 2011

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About Chris Smemoe

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    WMS Development Team Leader

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    Provo, UT

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  1. Chris Smemoe

    GSSHA - Long-term with GAR infiltration & Penman ET

    Joel, I answered a question in another post. The answer to this question is that it's hard to answer without seeing your model. You can make sure you have good starting values for all the evapotranspiration parameters in your model. I'd recommend the GSSHA course or contacting tech support with your model as I described in your other post. Let me know if you have any other questions. Chris
  2. Joel, I don't have an immediate answer to your question off the top of my head. I'd recommend contacting tech support to see if they can help you with your specific questions. Their contact information is here: https://www.aquaveo.com/technical-support If you could provide a copy of your model to tech support and explain the specific problem you're having, that would be best. With specific engineering-related questions, consulting is available at an additional charge. There are 2 good resources for answering GSSHA-specific questions. The first is the GSSHA wiki, located at https://gsshawiki.com Also notice on the GSSHA wiki web site that a training course is being offered next month in Alabama. This 2-day course is offered free of charge if there are still seats available. You would need to provide your own time, lodging, and transportation to the course. I think this is a great opportunity to discuss any problems you have with the GSSHA developers and to get to know them. Contact information for the course is on gsshawiki.com. This would be a good use of your time and you would get to know other people using GSSHA for their projects. Let me know if you have any other questions, Chris
  3. Chris Smemoe

    Format of GSSHA.dep file

    David, The .dep file just has water depth solution values for each of the cells for each output time step. I don't know that the file format is documented anywhere, but maybe I can try to track something down if you need me to. The important values you would use if you were reading this file are the number of cells in the model, which is in the "ND" card at the top of the file, the name of the dataset (NAME card), whether each cell is active/inactive (these values do not change for each time step), and the solution values for each cell (these values DO change for each time step). It's just a text file, so you can open the file in a text editor and look at it to see what I'm talking about. The active/inactive and the solution values are for each cell (based on the cell ID) and you cannot determine the actual location with just this file. The values are listed in the .dep file in the order of the cell ID's. If you have the location of the center of the upper left cell of your grid and you know the number of rows and columns in your grid, you can determine the location of the center of any other cell from the cell ID. The cells are numbered starting from the upper left corner of the grid. Let me know if you have any other questions. Chris
  4. Chris Smemoe

    Converting GIS Point Features Into Gaging Stations

    David, I looked at the documentation for gages in WMS and I'm afraid it's not very helpful. There are 2 types of gages in WMS: Rain gages and monitoring gages. You can convert a shapefile to rain gages in a "Rain Gage" coverage but there's no way to directly convert a shapefile to monitoring gages. However, there is a monitoring gage file format that you can import into WMS in the Gages dialog. Here's a sample file: GAGE BEGGAG NAM Gage1 LOC 1.000000 1.000000 0.000000 DIR 0.000000 1.000000 0.000000 COL 0 0 255 BEGGAG NAM Gage2 LOC 10.000000 10.000000 0.000000 DIR 0.000000 1.000000 0.000000 COL 0 0 255 BEGGAG NAM Gage3 LOC 20.000000 20.000000 0.000000 DIR 0.000000 1.000000 0.000000 COL 0 0 255 The "BEGGAG" line tells WMS to create a new gage. The "NAM" line is the name of the gage and the "LOC" line is the X Y Z location of the gage. You could just export the XYZ points from a shapefile to a text file and modify the file to include the necessary lines to import as a gage file. The only thing you might want to change in this file (besides the location and name) is the "COL" card. This is the Red, Green, and Blue color for the gage. The "DIR" isn't really used in WMS. To import this file, just go to the 2D grid module and select Data | Gages from the menus. It's also accessible from the "Select Monitoring Gage" tool. Select import from the Gages dialog and read your file. You could also just create a bunch of new gages in the Gages dialog and copy/paste your XYZ values into the dialog spreadsheet. Let me know if I can help with anything else. Chris
  5. Chris Smemoe

    Where can I find best DEM data?

    Omar, Google Earth probably uses USGS or possibly their own proprietary data source for their elevation data, but you can't use their elevation data inside WMS. If you're in the United States, the United States NED 10m data is a better source than the SRTM 3 arc-second data. If you're outside the US, I have found the ASTER GDEM v2 Worldwide Elevation data (1 arc-second) to be more accurate than the SRTM 3 arc-second data (but it's still not really great data). You can access this ASTER data from inside WMS using the following steps: 1. Select the Get Data from Map menu item or button. 2. Define your data bounds using the map locator and hit OK. 3. Select the Advanced button at the top of the Data Service Options dialog. 4. Under Popular Sources or Terrain Data, select "ASTER GDEM v2 Worldwide Elevation Data (1 arc-second)" and click Connect. 5. Define a filename to download your data and click Save. Your data will be downloaded and loaded into WMS. Right-click on the .tif file in the WMS project explorer and there's an option to convert it to a DEM. Once it's a DEM, you can use it for watershed delineation. Note that the upcoming verison of WMS (11.0) will have an option to download the best resolution elevation data for your area for anywhere in the world, whether inside or outside the US. Let me know if you have any other questions. Chris
  6. Chris Smemoe

    GSSHA long-term simulation

    Vaclav, GSSHA will allow you to have periods of precipitation with nodata values, but I'm not sure there's an easy way to define this information directly in WMS without editing the GSSHA .gag (rain gage) file. WMS writes the rain gage (.gag) file, but WMS has limited capability for editing and creating this file. There's a program called the "Time Series Editor" that's distributed with WMS that has additional capabilities for editing GSSHA rain gage information. More information about the rain gage file used with GSSHA is located on the GSSHA wiki here: https://gsshawiki.com/Precipitation:Spatially_and_Temporally_Varied_Precipitation You can manually edit this file as needed to provide GSSHA with the needed rain gage information. I'd recommend keeping a backup of the file if you manually edit it so it doesn't get changed by WMS or the Time Series Editor programs and you can always revert to your backup if needed. Let me know if you have further questions. Chris
  7. Chris Smemoe

    WMS 10.1

    The CAD menu was removed from WMS 10.1. The CAD menu options can now be accessed by right-clicking on the CAD data in the project explorer window. Let me know if you have any other questions. Chris
  8. Chris Smemoe

    GSSHA long-term simulation

    Vaclav David, Just looking at your screen, there are 2 things I can think of that might possibly be incorrect in your model. One possibility is that you are trying to run a storm drain model without having defined channel routing in your model. There was a bug in GSSHA that was recently fixed where if you tried to run storm/tile drains without channel routing defined GSSHA crashed. This has been fixed if you download the latest gssha.exe from http://gsshawiki.com. Another possibility is that your GSSHA output window states that there was an error encountered in the hmet_WES file. This is your HMET file used in your long term simulation. You should probably attempt to fix this error and see if this fixes the problem. I believe sample files are located on gsshawiki.com and there are some sample files in the long-term modeling example from the WMS tutorials. You could also contact our Tech support department with your files if you have a current maintenance contract for WMS. Let me know if I can be of further assistance. Chris
  9. Chris Smemoe

    Diverting a Drainage Path

    Mike, I just saw this and you have some strange things happening. If you still have the files and get a chance, it would be nice if you could contact support@aquaveo.com or call them with your files so we can see what's wrong with importing your flow directions. Thanks, Chris
  10. Chris Smemoe

    Routing Data

    Joe, Thank you for your input. I think this is a good suggestion and would not be difficult to do. I added it to our task list. In the mean time, there is a "filter" tab that's available when you are in the cross section attributes dialog. This tool allows you to reduce the number of points in your cross section to a certain number of points based on certain criteria. Chris
  11. Chris Smemoe

    Importing Survey Data

    Joe, You should be able to get survey data into WMS. Here's what I do to get it into WMS: 1. Select FIle | Open and select the .csv file. Here's my sample .csv file: 1, 1, 2 2, 2, 3 1, 2, 4 2, 3, 5 2. In the dialog that pops up, use the defaults and select "Next" 3. Under "WMS Data Type", select "Survey Data", then Finish. 4. This brings your data into WMS as TIN vertices. If you have vertices turned off, you won't see anything. To triangulate your vertices and show contours, select TIN | Triangles | Triangulate from the Terrain Data Module menus. You will see the triangles and contours. Let me know if you need anything else, Chris
  12. Dear Chris,

    I have a WMS model with HEC-HMS for hydrological modelling. And I have defined "user hyetograph" in HMS Meteorological Method as the following format. But I have an error "the start date or time is invalid". Do you have any suggestion for this case? Thank you for your interest. 



    14.2.2018 22:00:00    10.0
    14.2.2018 22:10:00    20.0
    14.2.2018 22:20:00    30.0
    14.2.2018 23:00:00    40.0
    15.2.2018 01:00:00    10.0
    16.2.2018 03:00:00    20.0




    1. Chris Smemoe

      Chris Smemoe

      The only suggestion I have is that you may be able to fix this by setting your computer to use "EN-US" as the locale setting when running WMS and HMS.

      Hope this helps,


  13. Chris Smemoe

    Routing Data

    Joe, There is no way to extract cross section information for the Muskingum Cunge method directly from a 1D Hyd cross section database. You can copy/paste the values from a spreadsheet into the appropriate tables in the HEC-1 interface. There is a reservoir routing tool that allows you to create a storage-outflow curve for an HEC-1 or an HMS model. I think the HMS tutorial describes how to use this tool. Let me know if you have any other questions. Chris
  14. Chris Smemoe

    The time step must be an integer divisible into 60

    Hi, Your comment sounds correct. If you are able to run GSSHA without errors, you can probably ignore the model checker output. Chris
  15. Chris Smemoe

    Static Tools

    Tamim, Thank you for reporting your issues on the forum. We sometimes run into these issues and we are usually able to help fix the problem with either a patch to the WMS software or are able to find a way to get your current version working. One thing you could try off the top of my head is to go to the Edit | Preferences menu command and select the "Graphics" tab. Select the "Software" graphics option, click OK, and restart WMS. See if you're still having the same problems. If you are, I'd recommend contacting tech support. They may be able to duplicate your problem using your files on one of our Aquaveo computers and we could get the problem worked out in the software. Chris