How to build in flood zone HQ100 EXTREM

I would completely ignore it, a dam does not break.

That one is really good. I consider building in former floodplain areas not really smart. For me, it is less about the behavior of the individual and more about the social organization.

He is really good.
I don't think building in former flood areas is really smart. For me, it's less about the behavior of the individual and more about societal organization.

Well, I think building in developed areas will become increasingly important in the future and I believe that is socially the right thing to do rather than always developing new housing areas on greenfields, but that completely misses my point. If someone is a millionaire and can choose plots however they want and also has an unlimited budget, then they probably aren't here in the forum.

I wouldn't say that. Take a look at some projects here. I wouldn't know how to implement that without the substance behind it. But I understand your point, that shouldn't be the standard.

What I think is, your decision is actually already made. You might now be looking for someone to support your decision. At that point, however, it could get difficult, as probably not many are faced with the same situation. Weigh it up and decide (if you haven't already) and do it the way you think is right. From my point of view, you can't do anything else.

I don't think building in former flood zones is really smart. For me, it's less about the behavior of the individual and more about societal organization.

So a large part of the Netherlands should probably be dismantled again... But you're right, even there the risk and the effort to minimize it will only increase with climate change.

So most of the Netherlands should probably be dismantled afterwards...

It is always a question of alternatives and circumstances. These look different in large parts of the Netherlands than in Bavaria.

On the topic of the wall: I experienced/had to/was allowed to witness the 2002 flood on the Elbe at my parents' house (Saxony). (1) What one had to see there made it clear once again: Water has a force (and finds ways) that one does not think possible. Four-meter pillars were washed away like toys. Forces, then, that a "wall" cannot hold even remotely. Apart from the fact that the water also comes from below (groundwater layers). A second realization was that a dam break is by no means "unlikely."

I would completely ignore it, a dam does not break.

When exactly that happened, it was the end of a residential area that was never rebuilt. I cannot make conclusions from a structural engineering perspective, as I am not an expert. But one thing became clear to me that summer: Water cannot be stopped by "pseudo-measures." That is why I would only see the elevation level as leverage. (P.S.: Even today there are still homeowners on the Elbe who do nothing during floods except keep the doors on the ground floor open front and back: the water comes in at the front and goes out at the back. And then the only option is to wait until it recedes. Whether one wants that is up to them. But NEVER AGAIN will I let myself be tempted to say “that is very unlikely” regarding floods.)