Wikipedia EN Untere Argen
Untere Argen is a river of Baden-Württemberg and Bavaria, Germany. Its source is near the village Börlas (part of Missen-Wilhams) in southwestern Bavaria. It passes along Isny im Allgäu and Wangen im Allgäu. At its confluence with the Obere Argen near Neukirch, the Argen is formed.
Source: Wikipedia https://en.wikipedia.org/wiki/Untere_Argen