https://communities.bentley.com/products/road___site_design/f/geopak-inroads-mx-openroads-forum/155856/tc-enable-or-notWhat is the calculation difference between Enable Time of Concentration and not using that when design a drainage system? I get a difference of 30 cfs on a particular system I am working on and trying to figure out which flow is more accurate.en-USTelligent Community 12