Weirs in InfoSWMM and SWMM5
Weirs in InfoSWMM and SWMM5 Subject: Weirs in InfoSWMM Figure 1 shows the relationship between the weir input data and the upstream and downstream nodes. · Height, · Crest and · Node Invert Elevation There are four types of weirs and if the weir becomes submerged downstream the Villemonte weir submergence correction is applied (Figure 2). You can have flow reversal across the weir unless you use a Flap Gate for the weir (Figure 3). Figure 1: Definition of Weir Terms Figure 2: Villemonte Weir Submergence Correction Figure 3: Flow Reversal in a Weir