In GeoSTORM software, the Routing Junction Data command allows the user to define routing junction data and display its associated output results.
This article describes how to use the Routing Junction Data command. Follow the steps below to use the Routing Junction Data command:
- From the Input ribbon menu, click the Routing Junctions dropdown menu and select the Routing Junction Data command.
- The Routing Junction Data dialog box will be displayed as shown below.
Note: From the Scenario Manager dialog box, selecting Rational Method as the hydrology analysis engine hides the plot view. This is because, for the Rational Method, there is no concept of time and hence no concept of routing flows as the analysis assumes steady-state peak flows at all nodes.
The following sections describe how to use the Routing Junction Data command and interact with the above dialog box.
Selecting Routing Junction
The Select Routing Junction section allows the user to create or delete a new routing junction or copy data from an existing routing junction to a new routing junction. In addition, the user can navigate between routing junctions and enter a description detailing the defined routing junction.
The following options are provided in this section:
Junction ID
This dropdown combo box lists all the routing junctions that are defined in the current scenario. The user can select the required routing junction from the dropdown combo box.
Click the pencil icon to edit the junction ID. The user can navigate between the previous and next routing junctions using the up and down arrow buttons. Alternatively, the user can click the […] button to select the routing junction from the Map View.
Note that the up and down arrow buttons will be disabled (i.e., grayed out) when the model contains only a single routing junction.
Description
This text field allows the user to enter additional information that describes the selected junction ID.
New
The [New] button allows the user to create a new routing junction on the Map View.
On clicking this button, the dialog box will temporarily disappear. A prompt will be displayed on the status bar instructing the user to place a routing junction on the Map View. After placing the routing junction, the dialog box will be redisplayed with a default unique junction ID displayed in the Junction ID entry field.
The user can press the [Esc] key to abort the creation of a new routing junction on the Map View and return the dialog box to its previous state.
Note that the ID of the newly created routing junction must be unique. Otherwise, an informational dialog box is displayed as shown below. Click the [OK] button and the user is then returned to the Junction ID entry field to change the ID.
Copy
The [Copy] button allows the user to copy existing routing junction data to a new routing junction. On clicking the [Copy] button, the software automatically provides a unique default name for the duplicated routing junction. The user can use the default name or enter a different valid and unique ID before moving on to add any other data.
Delete
The [Delete] button allows the user to delete the current routing junction data from the model. On clicking the [Delete] button, the following confirmational dialog box is displayed.
Click the [Yes] button to delete the selected routing junction. Click the [No] button to abort the deletion process.
Less/More
The [<Less] and [More>] buttons at the Select Routing Junction section header allow the user to collapse or expand the Computed Results section.
Routing Junction Specifications
The dropdown combo box at the Routing Junction Specifications section header contains the following data panel entries, which allow the user to define routing junction data:
- General Specifications
- Additional Inflows
General Specifications
The General Specifications panel allows the user to define general parameters for the selected routing junction.
Routing Junction Definition
The Routing Junction Definition subsection allows the user to specify principal input parameters for a routing junction.
The following options are provided in this subsection:
- Invert elevation
This entry field defines the invert elevation of the selected routing junction. Clicking the […] button allows the user to select the junction invert elevation from the Map View.
- Initial water surface elevation
This entry field defines the water surface elevation of the routing junction at the start of the simulation.
- Ponded area
This entry field defines the storage area occupied by the ponded water on the top of the junction after flooding occurs.
Computational Results
The Computational Results subsection displays intermediate information about the routing junction, as well as results from the stormwater computations.
The following options are provided in this section:
- Peak flow rate
This read-only field displays the peak flow rate that occurred at the routing junction during the storm event.
- Maximum WSEL
This read-only field displays the maximum water surface elevation that occurs at the routing junction during the storm event.
- Maximum depth
This read-only field displays the maximum water depth that occurs at the routing junction during the storm event.
Additional Inflows
The Additional Inflows panel allows the user to specify any external inflows at the routing junction. These inflows can consist of both a constant and a time-varying component. The additional inflows are applied directly to the routing junction and can be used for flow routing in the absence of any runoff computations (e.g., in a study area where no subbasins are defined). In river or stream modeling, user-defined inflows can be used to define the baseflow.
Baseline Inflows
The following options are provided in this subsection:
- Baseline inflow
This entry field allows the user to define a constant baseline inflow. If this field is left blank, then no baseline inflow is assumed.
- Baseline pattern (optional)
This dropdown combo box allows the user to select an optional time pattern defined in the current scenario whose factors adjust the baseline inflow. If this dropdown list is left blank, then the baseline inflow will not be adjusted.
Clicking the [Define] button displays the Time Patterns Data dialog box, which allows the user to define a specific pattern to be applied to the defined Baseline Inflow. Refer to this article in our knowledge base to learn more about the Time Patterns Data dialog box.
Time Series Inflows
The following options are provided in this subsection:
- Time series scale factor
This entry field allows the user to define a multiplier to adjust the values of the inflow time series. If this entry field is left blank, then the scale factor defaults to a value of 1.0000
- Time series inflow
This dropdown combo box allows the user to select the time series defined in the current scenario. If this dropdown list is left blank, then no direct inflow will occur at the defined routing junction.
Clicking the [Define] button displays the Time Series Data dialog box, which allows the user to define a specific time series inflow data set to be used. Refer to this article in our knowledge base to learn more about the Time Series Data dialog box.