In 2007, Tim Flannery said climate change makes rain not fill up Australian reservoirs any more.
Landline – 11/02/2007: Interview with Professor Tim Flannery . Australian Broadcasting Corp
In 2009, BOM announced the permanent drought.
Two years later Australia had “unprecedented biblical floods”
Unprecedented, “Biblical” Floods Inundate Australia
Australian floods of 2010 and 2011 caused global sea level to drop | Environment | The Guardian
In other words, the same weather Australia has always had.