Adding Elevation vs. Flow Data to an Outfall

You can add an Elevation-Flow (E-Q-T) curve to an outfall in Bentley StormCAD . Each series of Elevation-Flow (E-Q-T) curves represents the performance curves for a pond outlet operating under various downstream tailwater (T) elevations.

To add an Elevation vs. Flow (E-Q-T) curve to an outfall:

Click an outfall in your model to display the Property Editor, or right-click an outfall and select Properties from the shortcut menu.
In the Boundary Condition section of the Property Editor, select Elevation-Flow Curve in the Boundary Condition Type field. The Elevation-Flow Curve field becomes available.
Click the Ellipses (...) button next to the Elevation-Flow Curve field.
In the Elevation-Flow Curve dialog box, each row in the table represents a point on the Elevation-Flow curve. Type values for Elevation and Outlet Flow for each row. Click the New button to add a row or press the Tab key to advance to the next field in the table.
Perform the following optional steps:
To delete a row from the table, select the row then click Delete.
To view a report on the curve, click Report.
To view a plot of the curve, click Graph.
Click OK to close the dialog box and save your curve data in the Property Editor.

Elevation-Flow Curve Dialog Box

The dialog box contains the elevation vs. flow table and the following buttons:


	New	This button creates a new row in the E-Q-TW curve table.
	Delete	This button deletes the currently highlighted row from the E-Q-TW curve table.
	Report	This button opens a print preview window containing a report that details the input data for this dialog box.
	Graph	This button opens a graph window plotting the elevation-volume curve defined by the points in the table.

The table contains the following columns:

Column	Description
Outlet Elevation	This field allows you to define the elevation of the E-Q-TW curve point.
Outlet Flow	This field allows you to define the flow for the E-Q-TW curve point.