2.0

Table Of Contents
Chapter 2 Working with Ponds
140
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Stage-discharge curve file (.sdc) or a rating curve (.rtc). For more information,
see Creating an .sdc File to Use in Calculations in this chapter.
In addition, you can optionally use a pre-development .hdc file for viewing the
plot of the multiple hydrographs.
2 From the Hydrology menu, choose Routing
ä
Storage Indication Method to
display the Storage Indication Method dialog box.
Only the Description and Time Increment fields can be edited. The other fields
are for display only. You enter the data into the dialog box by using the Input
Curves button.
TIP
You can load a previously-saved Storage Indication Method file by clicking
the Load button. You can clear any existing data in the Storage Indication
Method dialog box by clicking the New button.
3 In the Description text box, type a description for the calculation.
4 In the Time Increment text box, type a time increment.
5 Click Input Curves and select the input curves for the calculations.
NOTE
You must load a minimum of three curve values: post-development
hydrograph, stage-storage curve, and stage-discharge curve. Load a pre-
development hydrograph file if you want to view it in comparison with the
post-development and routed hydrographs (when you click the Multi-
Hydrographs button).
After you load the input curves, the storage indication method data is
automatically compiled. The Peak Time label at the bottom of the dialog box
displays the time at which Peak Flow occurs. The Peak Flow label, also at the
bottom, displays the maximum flow through the structure at the Peak Time.