Rational and SCS loss method selection

[mdrehansk]

Hi all,
I have one query, when to use rational method and SCS method for runoff calculation. is there in reference available.

 

[psmart]

That's a very complex question, which requires a comprehensive understanding of each method to answer fully. There have been many other threads on the topic in this forum. Try a search...

My quick answer: Use the SCS method unless your stormwater regulations actually require the Rational method. Although Rational method may look easier, it's not. Use the SCS method.

Why are you asking?


Peter Smart
HydroCAD Software

http://www.hydrocad.net