In late November 2010, rain began falling in Queensland. By January 2011 extensive flooding had occurred to 75 per cent of the state and a disaster zone was declared. In total, 33 people lost their lives, with three bodies never recovered and declared deceased by the State Coroner in June 2012.
On 25 December 2010, Cyclone Tasha crossed the northern Queensland coast and brought disaster to every river system south of the Tropic of Capricorn and as far west as Longreach and Charleville. The flooding engulfed Alpha, Jericho, Chinchilla, Dalby, Theodore, Warwick, Bundaberg, Gayndah, Munduberra, Emerald, Rockhampton, Condamine and St George. The Condamine River, the Balonne River, the Burnett River, the Comet River, the Dawson River and the Nagoa River reached flood peaks never before recorded.
On 10 January 2011, a wall of water swept through Toowoomba, then travelled west, flooding Oakey, Dalby, Chinchilla and Condamine for a second time, causing flooding through the Lockyer Valley, including Murphy’s Creek, Postman’s Ridge, Helidon, Grantham, Laidley, Lowood, Fernvale and Forrest Hill.
The floodwaters affected the Bremer, Lockyer and Brisbane River systems, reaching heights that engulfed Ipswich, Goodna, Gailes, Karalee and suburbs of Brisbane.
During this period approximately 3572 businesses were inundated.
There were 5900 people evacuated from 3600 homes. Commercial loss was approximately $4 billion across the mining, agriculture and tourism sectors. Nineteen thousand kilometres of roads were damaged. Three major ports were significantly affected. More than 28 per cent of the Queensland rail network was left twisted and displaced. An estimated 28,000 homes would need to be rebuilt while vast numbers of dwellings require extensive repairs.
The judicial inquiry into Queensland's floods started on 10 February 2011, a final report was published in March 2012.
The Insurance Council of Australia estimates the 2011 damage at $2.38 billion.