This was made later in my CDM/CDMSmith career and includes improvements made in 2006 to 2008 for SWMM 3 to SWMM 5 modelsSWMM4to5_Converter.exe
Subject: 3 Types of Manholes in SWMM 5 and InfoSWMM
There are three types of interior manholes in SWMM 5 and InfoSWMM as regards water surface elevations above the Node Rim Elevation:
1st Excess Water leaves the Node as flooded water if the water surface elevation equals the Rim Elevation (Figure 1 and Gravity Mains),
2nd Excess Water is stored in the manhole as pressurized depth if the Node Surcharge Depth is used (Figure 2 and Force Mains)
3rd Excess Water is stored above the Node Rim Elevation (Surface Ponding and Figure 3)…
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