Do i need to connect (snap) two flow path lines at a junction? Is it necessary?
e.g. i have right flow path (Olsa river) and its tributary Stonavka river (left flow path). Do I have to connect (snap) them?
You do not have to snap flow path lines, but it doesn’t hurt to either. The difference will show up in the reach length of the downstream most cross section in the reaches upstream of the junction. And those reach lengths are not used, so it doesn’t matter. Hope this helps.