Researchers at the University of NSW’s water research lab have built a 3D replica of Merewether as part of their investigation into floodwater dynamics.

Results from the $20million project will be used to inform future government policies for planning and construction of housing and infrastructure and emergency response.

Principle researcher Grantley Smith said the modelling gave researchers a crucial insight into flow behaviour and associated hazards such as rising water levels, water depth and velocity.

“The models often underpin development, infrastructure and urban planning decisions, determining where houses and buildings should be constructed in zones that may be at risk of flooding,” Mr Smith said.

“They can also influence evacuation and emergency response procedures.”

The research will also be used in an overhaul of the Australian Rainfall and Runoff guidelines, funded by the federal Department of Climate Change and Energy Efficiency.

Engineers Australia and Newcastle City Council are also partners in the project.

‘‘Any errors in the models can have serious implications,’’ Mr Smith said.

‘‘For instance, if flow speeds are underestimated then evacuation routes might be poorly mapped, inadvertently leading people into the pathway of treacherous water.’’