Residents in waterfront Sydney suburbs including Port Botany, Double Bay and Manly are most likely to require evacuation in the event of a tsunami, according to the state’s emergency service.
The NSW SES released new tsunami evacuation maps on Friday, outlining areas across the state where residents would have to move to higher ground.
Suburbs surrounding Botany Bay, waterfront areas on the Parramatta River and the Northern Beaches would be affected by a tsunami.
The map also lists coastal cities such as Wollongong, Newcastle, Port Macquarie and Byron Bay.
Emergency Services Minister David Elliott said the likelihood of a land-threat tsunami on the Australian east coast was low, but preparedness and resilience were key.
There is no record of a land-threat tsunami in Australia since European settlement.
“The maps show areas which would be evacuated and not areas which would definitely be inundated with water,” Mr Elliott said.
“Emergency workers will use these maps for further tsunami response planning.”
Residents facing the threat of a tsunami should move to ground at least 10 metres above sea level or one kilometre from the coast, the SES recommends.