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Flood warning for SA's Mt Lofty Ranges

AAP logoAAP 31/07/2016

Rescue authorities have issued a special plea for motorists in South Australia to steer clear of floodwaters ahead of forecast heavy rain.

Parts of the Mt Lofty Ranges and the mid-north are on flood watch with up to 40mm of rain expected to fall across Sunday night and into Monday morning.

The State Emergency Service says just in the past month its crews have had to rescue seven motorists who became stranded when trying to drive through floodwaters.

SES chief officer Chris Beattie says emergency service agencies are frustrated that motorists continue to ignore warnings.

"World-first research conducted earlier this year by engineers at the University of New South Wales showed that as little as 15 centimetres of flowing water is enough to float a small car such as a Toyota Yaris. It completely floats away in 60 centimetres of water," Mr Beattie said.

"Obviously, larger vehicles need deeper water to float but the important thing motorists need to understand is that modern vehicles are both airtight and water tight so when they are driven into floodwater they can bob around like a cork."

July has been a particularly busy month for SES volunteers who have responded to almost 3500 calls for help compared to 1460 in May and 688 in June.

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