Importing level files

Level events define level hydrographs for inputs to the network during a simulation. A level hydrograph is typically used to represent seawater or river levels.

For 1D networks, level hydrographs can only be applied as an outfall node. If a level hydrograph is applied to any type of node other than an outfall, it is ignored during a simulation. When carrying out 2D modeling in InfoWorks ICM, level hydrographs may also be applied to 2D boundary objects.

Level data is usually contained in a spreadsheet.

Before importing event files, it is a good idea to create a new model group to store all event data.

1. From the Explorer window, right-click the existing Model Group and select New InfoWorks > Model Group.
2. In the New Name - Model Group popup, name the group "Ancillary Files".
3. Click OK.

To import a level event file:

4. From the Model Group, right-click the Ancillary Files group and select Import InfoWorks > Level > From event file.

5. In the Open dialog box, navigate to the folder with the downloaded files for this tutorial.
6. Select Mean High Water Springs.lev.
7. Click Open.

In the Model Group, the imported file appears under the Ancillary Files group.

8. Right-click Mean High Water Springs and select Open As.
9. From the Select Format popup, select Editor.
10. Click OK.

The Level Event Editor contains profiles for multiple outfall locations. An individual column is required for every node.

11. Right-click any cell and select Profile Properties.

In the Level Profile Properties dialog box, the Node reference and Pipe level or datum fields can be set.

Note: When setting values for levels, all values should be relative to the same datum level. A national datum level may be used, or datum can be chosen, such as the invert level of the lowest conduit in the network. If the datum level used is above the level of some or the entire network, the hydrograph may contain negative values. In this case, a potentially large increase in level will occur if the default value of zero is used.

12. When finished working with the level data, close the Profile Properties dialog box and the Event Editor.