To create a new water quality parameter set:

  1. From the WQ Parameter Set Editor, navigate to the WQ Parameter Set menu and click New. The Create New WQ Parameter Set dialog box will open (Create New WQ Parameter Set Dialog Box – Example) .
  2. In the dialog box, enter a name for the water quality parameter set in the Name field.
  3. Optionally, provide a description in the Description field (this is recommended but not required).
  4. From the Geometry dropdown list, select the geometry dataset you wish to associate with the parameter set (e.g., GeometryData1).

By following these steps, you will have successfully created a new water quality parameter set.



Create New WQ Parameter Set Dialog Box – Example

The Create New WQ Parameter Set dialog checks that the entered Name is unique when the OK button is clicked. If the name is not unique, a Duplicate Name message dialog will appear, notifying the user that the name already exists and needs to be changed. To resolve this, click OK to close the message dialog.

To proceed:

  1. In the Create New WQ Parameter Set dialog, modify the name in the Name field to make it unique, and click OK.
  2. If no geometry dataset is selected, a No Geometry Selected dialog will open. Click OK to close this dialog and return to the Create New WQ Parameter Set dialog.
  3. From there, select the appropriate geometry dataset and click OK.

The new WQ parameter set will then open in the WQ Parameter Set Editor (WQ Parameter Set Editor – New WQ Parameter Set – Example).



No Geometry Selected Dialog Box

For a newly created WQ Parameter Set (e.g., WQparameterSet1), the columns and rows in the table will automatically populate based on the selected Geometry dataset and WQ Constituent Set (e.g., Geometry and WQConstituent, respectively). This ensures that the water quality parameters are aligned with the geometry and constituent set chosen for the model.



WQ Parameter Set Editor – New WQ Parameter Set – Example

To create additional WQ Parameter Sets, simply repeat the steps mentioned earlier.

To enter values for a parameter that differ from the default values in the Base Value column:

  1. From the Value column for the region of interest (e.g., Default Region), click to select the value cell for the parameter you want to modify.
  2. Enter the desired value, the Absolute Range listed in the tooltip serves only as a reference range (for example, for Nitrification Rate, the absolute range is 0.0 to 20.0).



WQ Parameter Set Editor – Example Value Definitions

In some cases, the value cell may display a selection dropdown menu (as shown in WQ Parameter Set Editor – Example Value Definitions). This menu provides a list of options for specifying the input parameters. For example, the NSMI Global parameter group includes a dropdown list with six options. To choose a different option, click the dropdown menu and select the desired method.

If you want to return all user-defined values to their default settings, click Restore Base Values. Please note that this action cannot be undone.

If the WQ Parameter Set Editor contains multiple parameter sets, click Apply to save any changes before toggling between sets. If changes are not saved, a Save Changes? message dialog will appear, prompting you to save the edits before navigating between water quality parameter sets.

Continue entering the parameter values as needed. When you are done editing a water quality parameter set, click OK to save the entered data and close the WQ Parameter Set Editor.