Since you apparently don’t want to believe it, here it is again, very slowly and for you to take notes: At small streams that quickly overflow their banks during local heavy rain and where the floodwater is gone again after a maximum of three hours, such measures are absolutely effective. With multi-day heating oil- and mud-saturated Danube broth, you either need heavy artillery or you just leave it and limit yourself to the minimal cosmetics that appease the building authority.
A little tip, have a chat with the innkeepers in Passau who are regularly flooded by the Danube every few years according to plan. They definitely know what they’re talking about.
That’s a good tip, I would be exactly interested in those cosmetic things like dam barriers, are they effective yes/no? So if I buy such stuff and the emergency occurs, it shouldn’t just be handled by insurance.
And also to clarify again, I don’t live in a flood zone, there has never been a flood and I don’t have a basement, even in a 100-year flood it is completely dry at my place, that is TOTALLY different from Passau.
I also don’t have any current dam breaches on my radar and this dam has been improved multiple times. If it ever breaks, definitely not again afterwards. And that’s why living in a house that I don’t like and that absolutely doesn’t correspond to what I planned. I want to have a relatively flat garden, I already raised it a bit, that would be a completely different concept and not my dream house, honestly I would find it hideous.