1953 was 5.6m above mean sea levels. but parts of the Netherlands are -3 below sea level, it kinda evens out. I think the other point to mention is that there

1953 was 5.6m above mean sea levels. but parts of the Netherlands are -3 below sea level, it kinda evens out. I think the other point to mention is that there isn't one barrier, there are a fuck load of them. (https://nltimes.nl/2024/09/03/tech-failure-nearly-caused-massive-flood-amsterdam-city-center-november-2023 https://nltimes.nl/2024/09/03/tech-failure-nearly-caused-mas... but they also need to be close to work....)