What are the Equations for Weirs in SWMM 5?

Subject:   What are the Equations for Weirs in SWMM 5?

There are four types of Weirs in SWMM 5:  Transverse, Sideflow, V Notch and Trapezoidal.   The trapezoidal weir is a combination of the Sideflow and V Notch Weir and the Sideflow acts like a Transverse Weir when the flow is reversed (Figure 1).

Figure 1.   Weir Equations in SWMM 5
Weir Equations in SWMM 5



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