TWW-SWMM installation
SWMM Installation
Download and install SWMM
QGIS configuration
In QGIS, check that the path recorded in
Preferences > Processing > Processing providers > TWW > SWMM executablematches the path of the swmm executable (by default:C:/Program Files (x86)/EPA SWMM 5.1.013/swmm5.exe)