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Add Water Surface by Location

To add a water surface using the Add Water by Location option:

  1. Select the Groundwater groundwater workflow tab workflow tab.
  2. Select the Add Water by Location water by location icon option from the toolbar or the Groundwater menu.
  3. In the Add Water Surface by Location dialog, select the Add add button icon button to add a new water surface, or choose an existing water surface from the list at the left of the dialog to edit its properties.
  4. Choose the Water Type: Water Table, Piezometric Surface or Drawdown Surface.
  5. Only ONE Water Table and ONE Drawdown surface can be defined for a model. There is no limit on the number of Piezometric surfaces.
  6. Enter the X, Y, and Elevation (Z) coordinates of the water surface.
  7. Select the desired Surface Reconstruction parameters used to generate the surface. Review the Interpolation page for more detail.
  8. Select the Extrapolate checkbox if you want to extend the generated surface to the limits of your model in the X and Y direction. This will ensure that the water surface affects all the required materials without explicitly defining location points at the edges of your model in the XY plane.
  9. Select OK to generate the water surface.
  10. Review the surface by selecting the water surface entity in the Visibility pane. The water surfaces are hidden by default until you assign them to a material (see next step).
  11. To use a water surface in the calculations, you must assign it to materials in the Water Parameters tab of the Material Properties dialog.

Import Sysdam Data

Sysdam is a computational system to support dam safety management for organizing safety information, supporting assessments and aiding dam operation. Sysdam, let it's user to track the water level at anytime inside the dam based on the located piezometers in the hydraulic structures. In Slide3 Add Water by Location dialog, you can import the Sysdam data to create a water surface on your model and perform the analysis accordingly. These data would include the information of each piezometer to track the water level over a range of dates. To use the feature, follow the steps described below.

  1. Follow step 1 to 6 in the Add Water by Location section above.
  2. Select the Import button import button from the Add Water by Location dialog.
  3. In the prompted dialog, select “Sysdam Data(*xlsx)” as the data type from the dropdown list.

    sysdam datatype

  4. Select a Sysdam data file and click Open. You will be prompted to a dialog for further settings.

    Sysdam data files that we import in Slide3, are in the form of Excel files. The first tab lists out all instruments with their information, including coordinates. Each row corresponds to an instrument. The relevant columns are Identifier, North, East. For each instrument, the reading value (elevation) and recorded date and time are listed on an individual tab. A sample Sysdam data file can be downloaded from here (use Date=14/09/2020, Time=23:00:00 for a sample time set).

    If insufficient or invalid data are found, Slide3 will skip the data for the instrument. A warning message will pop up to notify you as below. An Entry Selection section will display, if duplicate date-time entries are found in the file. You can select either the first or last entry to extract.

    sysdam warning dialog
  5. In the Import Sysdam Data dialog, you need to specify a reference point and a date with time, in the order for Slide3 to generate a water surface from the selected Sysdam file. Follow the steps described below.

    Background
    To record water surface elevations, multiple sensors were set up at different locations in the site and data were recorded at different times.

    import data dialog


    1. Define a Reference Point.
      The water surface will be placed according to the Reference Point. Based on your Sysdam data file (North and East columns on the first tab), enter a set of xy coordinates, which will be translated to the origin of your Slide3 model. The default value is (0,0).
    2. Define a Date and Time.
      Based on your Sysdam data file, eligible data of the chosen date and time from all instruments will be extracted to Slide3.
      1. You can either manually enter a date in the field, or choose a date from the calendar by clicking the timestamp icon b_timestamp. Only valid dates are listed.
        By using the Most Recent option b_most recent, it automatically inputs the most recent eligible date.
      2. Select a Time of the date from the dropdown list.
    3. In the Sensor Data Warning section, all sensors that do not have data of the input time will be listed.
    4. The selected data points will be plotted in the viewport on the right of the dialog.
    5. When completed settings, select OK to apply and exit the Import Sysdam Data dialog. The selected data will be inputted to the Water by Location dialog grid as (X, Y, Elevation) data.
    6. In the Water by Location dialog, check the Surface Reconstruction settings (see Interpolation Method section above for details). See below screenshot as an example.
      Click OK to apply.

      add water by location dialog

  6. The water surface will be applied to your model. Review the surfaces by selecting the water surface entity in the Visibility pane. The water surfaces are hidden by default until you assign them to a material (see next step).
  7. To use a water surface in the calculations, you must assign it to the material properties using the Water Parameters option.
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