Brisbane, Ipswich, Lockyer Valley and Somerset Councils have partnered with the Queensland Government to deliver the most detailed and comprehensive flood study ever undertaken in Australia.
Incorporating 170 years of historical rainfall data and investigated 11,340 scenarios that influence flooding, the Brisbane River Catchment Flood Study will provide a greater understanding of the Brisbane River’s behaviour across four council areas in South East Queensland.
Brisbane Lord Mayor Graham Quirk said that 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.”
“By focusing on the entire catchment, we are able to bring together councils and stakeholders across the Brisbane River floodplain, using comprehensive and consistent information to improve the safety of our communities.”
Ipswich City Council Mayor Paul Pisasale said the study was all about working together to understand the potential for flooding across the region.
“This study has been a four year partnership between the Queensland Government, Ipswich City Council, Brisbane City Council, Lockyer Valley Regional Council, Somerset Regional Council and Seqwater,” Cr Pisasale said.
“While councils are still the best source of information for detailed, localised flood information, the Brisbane River Catchment Flood Study will support a more coordinated approach to managing floods across all levels of government in the future.”
Lockyer Valley Regional Council Mayor Tanya Milligan said that the Flood Study was critical for community preparedness.
“While the study will not prevent future flooding, it will work hand in hand with the study we have already commissioned of Lockyer Creek, to ensure communities across the catchment are as prepared and resilient as they can possibly be,” Cr Milligan said.
Somerset Regional Council Mayor Graeme Lehmann said with the Somerset region containing Wivenhoe and Somerset Dams the study was very important to the region’s future.
“The Flood Study uses cutting-edge technology to model flooding downstream of Wivenhoe Dam including the Brisbane River and major waterways including Lockyer Creek, the Bremer River system and Oxley Creek,” Cr Lehmann said.
“It will enable us to work with the government and south east Queensland councils around us to coordinate planning, preparation and responses to flood events that may occur in the future.”
The Brisbane River Catchment Flood Study noted important measures delivered by the four councils since the 2011 flood event, including the Lockyer and Mid Brisbane Catchment Action Plans as part of the Resilient Rivers Initiative.