▲ 6 r/civil3d
SSA Pipe Backing Up - Not Draining into Pond and Tailwater Question
I have a storm drainage system in SSA (picture below of a portion of it) and it is kind of hard to read, but the highlighted node is the pond. Does anyone know why the pipes leading up to the pond are backing up before it drains into the pond? I feel like the pipe from the last inlet to the pond should be filling up first. I have to put the pipes to a huge diameter before they stop overflowing. I have the site plan for an identical site next door to this one and they only used 15" pipe.
Also, is the only way to set a tailwater elevation by setting the outfall to a fixed condition and putting an elevation on it?
u/Geller_sibling3 — 7 days ago