Qld unveils comprehensive flood study

Queensland has completed the most detailed flood study ever undertaken in Australia to better understand the dangers of the Brisbane River.

The Queensland government and four local councils say Australia's most comprehensive flood study will provide a greater understanding of the dangers of the Brisbane River.

The Brisbane River Catchment Flood Study, released on Friday, incorporated 170 years of historical rainfall data and investigated 11,340 scenarios that influence flooding.

The study was recommended by the Queensland Floods Commission of Inquiry, which probed the terrifying 2011 floods in which 35 people died, as there was no single flood model councils could use.

"This was an incredibly comprehensive process involving more than 50,000 computer simulations which has helped us produce Australia's first ever whole of catchment flood study," Deputy Premier Jackie Trad said in a statement.

"This study provides a comprehensive analysis of a range of potential flood events, which is a critical first step towards developing a strategy that will set out flood resilience options for the region."

The Brisbane River catchment area spans more than 13,500 square kilometres, with the floodplain downstream of Wivenhoe Dam spanning the council areas of Brisbane, Ipswich, Somerset and Lockyer Valley.

The flood models developed as a result of the study have been verified against the flood events that occurred in 1974, 2011 and 2013, and endorsed by an independent panel of experts.

Brisbane Lord Mayor Graham Quirk said a coordinated effort was important as the region has a long history of major floods recorded back as far as 1893.

"In the past the way we planned for flooding was divided by local government area but we know that floods have no respect for council boundaries," Cr Quirk said.

The Insurance Council of Australia says the study's release is an important step in gaining a better understanding of the flood risks faced in the region.

"Information and awareness are crucial tools in preparing for natural disasters, and this study will enhance both," ICA chief executive Rob Whelan said.

Source AAP

Stay up to date with SBS NEWS

  • App
  • Subscribe
  • Follow
  • Listen
  • Watch