A note for those trying to find past Legacy SWMM 3 and SWMM4 Fortran Code and Engines.
You can contact me at robert.dickinson@gmail.com or at red@ncimm.org and I will make you an Editor of this Box Account:
https://app.box.com/folder/51591545827
Thanks, Robert Dickinson
NCIMM ( Center for Infrastructure Modeling and Management)