Vrbno pod Pradědem - confluence of Opav

There are rivers that have the same name from beginning to end, there are rivers that have different names, especially those that flow through different states. This is half the case for the Opava River, most of its course has different names, but before it completely settles down, it has different named sources.
Of course, connoisseurs know that it's not that different. Apparently the nomenclature was not so sure which initial river to take as the…