Hi Aleksandar,

the interpretation of which waterway is Arroyo de la Invernada is the problem by which the limits between Brazil and Uruguay are disputed since XIX century.

So, name:es in https://www.openstreetmap.org/way/116896246 is ok, because its what is called in spanish (IGM link below). Obviously the IGBE and Brazilian Topographic Maps will display other names as they are official organizations in their country. The IGM sheet shows which waterway is called Arroyo de la Invernada for us. https://igm.gub.uy/geoportal/datos/cartas/J/J7.tif

So, I tagged name:es=Arroyo de la Invernada the waterways that are part of "Arroyo de la Invernada" according to Uruguay position.

This way https://www.openstreetmap.org/way/116895878/ is what Brazil says it is "Arroio Invernada", but for Uruguay is "Arroyo Maneco", so one name in name:pt, the other in name:es, and both in name, as there are tagged all waterways in the BR/UY border.