Backup formulas for EPA-SWMM methodology

Question

Ref: http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/127827 
 Jesse, 
 
 Do you know where I could find the backup formulas, etc for computation of runoff using the EPA-SWMM methodology for a watershed? Let me know what you find, thanks.

Seth V. Erlich, P.E.* 
 Project Engineer IV 
 CHA ~ design/construction solutions 
 Office: 518.453.3914 
 serlich@chacompanies.com 
 www.chacompanies.com 
 *NY, GA

Jesse Dringoli · Answer

Hello Seth, 
 
Could you clarify what you're looking for? Do you need the formulas for the calculation of runoff with the EPA-SWMM runoff method? If so, you may want to check out the SWMM hydrology reference manual, which you can download here: 
 
 www.epa.gov/.../storm-water-management-model-swmm