Weather *is* cyclical you know, and with climate change some places are going to be hit with even more aggressive patterns.
Or there could be other problems brewing. I'm not sure what the water table usage in Australia is, have you looked into it? It's one of those things that can be really bad when the water runs out but nobody thinks about because it's out of sight, out of mind. Just look at California - they've been drawing way more out of the aquifers than can possibly be replenished for decades and it's causing the actual ground to sink. One day not too far off those aquifers will be dry and then their entire agricultural sector will be screwed.