Updated flood modelling guidelines help build resilient cities in face of climate change

 

Updated flood modelling guidelines help build resilient cities in face of climate change Engineers and policy makers will be able to better predict the impact of flooding in Australia with the latest update of the Australian Rainfall and Runoff guidelines released today.

Engineers and policy makers will be able to better predict the impact of flooding in Australia with the latest update of the Australian Rainfall and Runoff guidelines released today.

 

“The 2016 Australian Rainfall and Runoff guidelines (ARR 2016) represent a significant improvement in best practice for flood modelling,” said Mark Babister, Chair of the ARR Technical Committee and past Chair of Engineers Australia’s National Committee on
Water Engineering.

 

“Based on rainfall and stream flow data, case studies and computer modelling, ARR 2016 will be used by engineers, flood practitioners and policy makers to understand how much rainfall to expect and where to expect the water to go once it hits the ground.

 

“Since the last edition of the ARR in 1987, estimation methods have improved significantly and more complex models have been developed, allowing engineers to provide a more robust estimate of flood risk.

 

“Now in its fourth edition, ARR 2016 is the first to be entirely based on Australian data, analysing 100,000 storm events and an additional thirty years of data to better reflect Australia’s variable landscape.

 

“While most people remember the extreme flooding events in major centres that have happened in the last few years, ARR 2016 is equally important to understanding the effects of dryer weather events such as El Niño, particularly as climate change induced extreme weather becomes more common.

 

“ARR 2016 represents the first inclusion of climate change guidelines, drawing on the most recent climate science from CSIRO, the Bureau of Meteorology and the IPCC Fifth Assessment. However, despite this improvement, Australia will need to make major research investment into how climate change will affect extreme rainfall and flooding to refine these further. 

 

“ARR has been a crucial tool for engineers and planners for many years, and with these improvements, we hope to see ARR 2016 leading to better flood mitigation solutions and
ultimately, a more predictable environment for engineers to build safer structures,” Mr Babister said.

 

The 2016 Australian Rainfall and Runoff guidelines were published by Engineers Australia with funding from the Australian Government, and are freely available at www.arr.org.au

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