Well, it'll at least cause everything to shift. Germany is slowly becoming wetter, again. So, more evergreen trees, like it used to be.

More like the dreary-but-mild weather of my childhood. Le cold swamp. 

 unfortunately i think it's gonna be le cold giant inland sea before too long if the rainfall keeps increasing 

 here's a useful site i just found that lets you show what is above ground when waters are at that altitude:

https://www.floodmap.net/?ct=DE