there are different things said by different publishers, which makes that a fluid definition as well.
In The Plaettchenliste, it's River III
In the Plaettchenliste, it's River III :https://cundco.de/media/pdf/47/c4/91/Plaettchenliste.pdf
This may be fan-made, but it's the "official" document for ordering tiles on cundco...
The most important thing is not the official name, but the name that History will remember. Here, History will remember that this river is River III
River 3 is an upgraded replacement for River 1. It is not meant to be added to the game alongside River 1. Of course, you may do as you like. One option would be to place the two springs back-to-back so that each spring flows in an opposite direction, similar to the 20th anniversary double source tile.
Started by Paul
Started by caincarcassonne
Started by Willem
Started by SRBO
Started by The-Edge