Diversion LInks in SWMM 5 and 5.0.021 Subject: Diversion Links in SWMM 5 and 5.0.021 Diversion links in SWMM 5 are Pumps (5 types), Orifices (2 types), Weirs (4 types) and Outlets (3 types). Figure 1. Diversion Links in SWMM 5