Conversation so far:
what is the name of the river in salzburg austria
The city of Salzburg is situated by the river Salzach.
how long is the salzach river
The Salzach is 225 kilometres long and one of the most important rivers of the Austrian Alps.
where does the salzach river originate
The Salzburg River originates in the Kitzbüheler Alpen in Tyrol, close to the border to Salzburg; it enters the River Inn at Passau.

Question: has the river ever flooded
Self-contained rewrite: has the salzach river ever flooded