A rise in Pipe Inverts Across a SWMM 5 Node · January 20, 2011 Subject: This is how SWMM 5 handles jumps in pipe invert across a node. The water surface in the node determines the flow in the link, as the depth increases due to upstream inflow eventually the downstream link will start flowing. A rise in Pipe Inverts Across a SWMM 5 Node