I mean there is a lot of engineering to handle the intense rain. Mostly due to drainage systems and dikes.

If you’re asking if the government is somehow causing this? There was a government transparency investigation and there is no coordinated or organized effort to bring about more rain. That’s a right wing conspiracy. It comes up with a center left coalition, but the current government has all the center and right wing parties in power. If there was some government program like the conspiracy theories claim, they’d expose it.

Anyway, New Zealand is just in a part of the world that gets lots of rain coming in very intense storms.