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Junction nodes are points placed at the intersection of two or more pipes (intersections or tees). Junctions are used to represent points of water consumption or inflow, points where specific analysis values (e.g., pressure, concentration) are desired, and at points where pipe attributes (e.g., diameter, material) change.  Junction nodes must have their elevation above datum (e.g., sea level) specified in order for pressure computations to be meaningful.


How do I...

Create a Junction?

To create a junction node, do the following:

Click on the InfoWater Pro Ribbon in the Edit Group using the → Insert Command dropbox .  

Select the Insert Junction icon from the → Insert Command dropbox  

When the Insert Junction command is the active command it will be highlighted in Blue as shown: 

Select an upstream node if one exists or left click on the part of the network where you wish to begin digitizing the network.

Select intermediate vertices to identify pipe curvature by left clicking at the desired vertex points.

Once the command is initiated, select the location of the new node by left mouse clicking anywhere on the map display. Suggest a new ID and/or a description on the Junction Identification dialog box and click on the OK button to accept the ID and create the junction. The junction should visually appear at the specified location. If the insert location is near an existing model pipe the software will ask if you wish to insert the junction into that pipe. If you wish to split the pipe, an ID box for the new junction and the new pipe will appear in a pop up window.


You can also use the Digitize Network iconfrom the → Insert Command dropbox  to create a pipe and node network "on the fly".  Once digitized, the user is able to add relevant modeling data in the Model Explorer - Attribute Tab window.



 Edit a Junction?

Graphic Selection - To select a junction node for data edit do one of the following:

  • Choose the Select icon from the Model Explorer - Attribute Tab window and click on the specific Junction.

  • If a Junction has been prior selected and is a part of the Browse history, it can be re-selected by choosing it from the Browse-History section of the Model Explorer - Attribute Tab window.


Data Edit - To edit the data related to a junction, first select the junction using the tools above. Once selected, edit Junction related data by adding/modifying the Model Explorer - Attribute Tab window. Additionally modifications may be done by editing the DB Tables that may be accessed from the InfoWater Control Center -> InfoWater button -> Edit Pull-down menu -> DB Editor command.

 Graphic Edit  - To edit the node graphically do one of the following:

  • From the InfoWater Control Center -> InfoWater button -> Edit pull-down menu choose the Move Node command. Left click once on the junction to select it and choose the new position and left click again to move the junction.

  • Choose the Move Node icon from the InfoWater Edit Network toolbar. Left click once on the junction to select it and choose the new position and left click again to move the junction