This circular time line graph shows there has been 11 versions of InfoSWMM with Low Impact Development (LID) modeling features and 2D mesh simulation added for InfoSWMM v10. The LID modeling features were added to EPA SWMM 5.0.019. EPA SWMM 5 has been accepted by FEMA since SWMM 5.0.05 and InfoSWMM Models exported to EPA SWMM 5 have been accepted by FEMA since InfoSWMM v4.