I am using EPASWMM Runoff method for the runoff generation and i have calculated the all the catchment characteristics such as catchment slope and characteristic width(m) and Curve number also calculated based on soil characteristics and am using standard Time intensity curve generated from DUBAI IDF curve . Can anyone tell me the Empirical Formaula relating all catchment parameter and how the runoff is generated in each catchment.
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I am using Sewergems Connect edition
If you need the formulas for the calculation of runoff with the EPA-SWMM runoff method, you may want to check out the SWMM hydrology reference manual, which you can download here;
Storm Water Management Model (SWMM)
Additionally, please see the following article for more information. It is focused around differences between the unit hydrograph and SWMM runoff methods, but there are some links included that you may find useful.
Results Different between Unit Hydrograph and EPA-SWMM Runoff Methods
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.