I still have another triumphal arch ready for my city planning efforts. This time, I let it all out in the open in this one map where there are no limits to how many LP's when applying fish gills countercurrent system...
Still, I'm having issues with the plebian area delivering grain and fish, simultaneously. The problem is when let, the next door granary supply is overfilled with fish. Also, unless houses are upgraded to insula level, they won't accept fish... Such late discoveries now left to yearning as I ascend to my coronation.