SWMM 5 XLS File

The purpose of this memorandum is to discuss how the user can select nodes or links in the SWMM 5 interface for saving to the SWMM 5 OUTFLOWS file.  The selected nodes flow and water quality concentration are listed first followed by all of the selected links flow, velocity, depth and water quality concentrations (if simulated).  The selected link(s) flow, velocity and depth take the place of the default outfall flow in SWMM 5.  The default OUTFLOWS file contains just the flow out of every outfall nodes in SWMM 5 in addition to the outflow of every node with a degree of zero.  Nodes with a degree of zero are typically the upstream nodes of the links with adverse slopes.  The use of the #PRINT command on any node or link will change the format of the OUTFLOWS file.

The user enters the #PRINT command in the DESCRIPTION field of the node/link properties dialog (Figure 1).  The properties dialog is accessed by either double clicking on the node/link in the GUI or double clicking on the node or link name in the DATA dialogs on the left side of the GUI.   An example OUTFLOWS file using the #PRINT command is shown in Table 1.  In this example the total flow at node 10309 and the flow, velocity and depth for links 8100, 8130 and 1630 at the time step are saved on each line following the year, month, day, hour, minute and second for the current time step. 

There is now a node or link identifier to the node/link name in the file after the line “number of node/links as listed below”.  The print or save interval in the OUTFLOWS file is based on the REPORTING Time Step in the SWMM 5 Options dialog.   Those files with water quality will get the total flow at the node and the water quality concentrations at the node followed by the link flow, velocity, and depth and then the water quality concentrations.