What is the Difference Between a User Defined Unit Hydrograph and a Hydrograph Entered in the Inflow Collection Editor?
You can enter a hydrograph (in flow units) at any node element (e.g. catch basin, manhole, catchment, cross section, wet well). You can also enter a unit hydrograph, but only at a catchment node.
To enter a hydrograph (in flow units) using the Inflow Collection Editor:
- Select the element in your model.
- In the Property Editor, click the Ellipsis button (...) in the Inflow Collection field.
- In the Inflow Collection dialog box, click the New button and select Hydrograph Load.
- Enter values into the table of flow vs. time, then click OK.
To enter a unit hydrograph at a catchment:
- Select a catchment in your model.
- In the Property Editor, select Unit Hydrograph as the Runoff Method.
- In the Property Editor, select Generic Unit Hydrograph as the Unit Hydrograph Method.
- Click the Ellipsis button (...) in the Unit Hydrograph Data field.
- In the Unit Hydrograph Data dialog box, enter values into the table of flows (for a unit of rainfall) vs. time, then click OK.