Rivers around the Serault Marquisate
Find the map HERE.
River Last
River Dawn
River Dawl
River Pommelé
River Alyons, the branch off the Last by Alyons
The branch that goes off by Champlevé is just called River Champlevé and then the branch off that that goes by Gothivallon is called River Gothi but it's too crowded there so I didn't label them.
The rest, that go into the marsh, may be locally named various things but nobody making maps would bother with them. If anything it would be called the Nahashin delta or something, I think.
The bulk of the Last turns and goes into the Tirashan where it meets the Dawn, which is why the name turns and goes with that portion.
While Champlevé and Gothivallon certainly get enough water to power mills and make ponds and fish, it isn't as passible and the land is getting much more marshy except where it has been drained. This is part of why Serault is the riverport Marquisate and they are the vassal villages.