Australian governments urged to scrap ‘one-in-100-year’ flood standard and update risk maps

Experts say flood mapping needs to be standardised and frequently updated amid crisis in NSW and Victoria

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Climate change is rendering terms like one-in-100-year" flood useless and flood maps across Australia need to be uniformly updated immediately so communities and agencies can better mitigate disasters, experts say.

The call to standardise flood mapping comes during flood crises in New South Wales and Victoria, and concerns over continued development on flood plains due to old maps.

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