HydroCAD Stormwater Modeling - Since 1986

Comparing Rational Method Runoff Results

This document will help you identify the exact cause of any differences between HydroCAD runoff and other hydrology programs you may be using. 

bulletThis document deals with the Rational method runoff procedure.  If you're using the SCS or SBUH runoff procedure, please see the SCS method comparison guide.
bulletIf your runoff results are in good agreement, you may skip this document and compare your pond or reach routing results.
bulletBefore you proceed with this page, be sure you've read the general comparison guidelines.

This page is currently under development.  In the mean time please see the general discussion of Rational Method.

Once the runoff volume and peak are in agreement, you can proceed to compare your reach or pond routing results.


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