Importing inflow files

Step-by-step guide

Inflow events define hydrographs for input to the network during a simulation. Inflow hydrographs should be applied to manholes, storage nodes, pond nodes, or river break nodes, but not to outfalls or sewer break nodes. In this tutorial, inflow files are imported that were created outside of ICM.

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

1. In 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 the inflow files:

4. Right-click Ancillary Files and choose Import InfoWorks > Inflow > from event file.

5. In the Open dialog box, navigate to the folder that contains the downloaded files for this tutorial.
6. Select both 5 Year Inflows.qin and 200 Year Inflows.qin.
7. Click Open.
8. In the Model Group, expand the Ancillary Files group to see the two inflow events.
9. Right-click 200 Year Inflows and select Open As.
10. From the Select Format popup, select Editor.
11. Click OK.

The Inflow Event Editor for the selected 200-year inflow appears.

12. In the Data column, right-click any cell and select Profile Properties.

An Inflow dialog box appears that contains the profile properties. Here, the name of the node where the inflow will be added is found. The inflow location can also be edited. It is also possible to add inflows at points along a river length to represent any other inflow sources.

13. Click Cancel to close the Inflow properties dialog box.

14. In the Inflow Event Editor, right-click any cell in the Data column and select Sub-Event Properties to open the Sub-event parameters dialog box.

The sub-event properties are where the start date and time are applied to the file. The time interval of the data can also be specified. The default timestep is seconds. Other units can be specified by using m for minutes, h for hours, or d for days.

15. Click Cancel to close the Sub-event properties dialog box.
16. If a warning appears asking to save changes, click No.
17. In the Model Group, from the Ancillary Files group, right-click 5 Year Inflows and select Open As.
18. From the Select Format popup, select Graph.
19. Click OK.

The graphical view displays the data contained within the time-varying file. Only one profile per graph can be displayed.