South Australia will see a second, higher flooding peak for the Murray River as authorities say they now expect an influx of 185 gigalitres per day in the second surge in late December.
the main points:
- Southern Africa is expected to have two flood peaks, one in early December and the other around Christmas
- The second summit will see between 185 and 220 GL flow into the Murray each day
- Those in Greater Adelaide consume 200 GL of water annually
The state government said two peaks are expected, one in early December and a higher one in late December around Christmas.
While a high probability is 185 GL, there is a moderate chance of 200 GL and a lower probability of 220 GL during the second peak.
Prime Minister Peter Maliinauskas said the high probability of 175 GL/day was still expected during the first peak in early December, with the lower probability of 220 GL/day, dropping to 200 GL/day.
“So, while there is good news as to what we can expect at the beginning of December, we are certainly on high alert as to what is coming across the border in late December,” said Prime Minister Peter Malinouskas.
The people of Greater Adelaide consume about 200 gigalters of water annually.
“We are now faced with the possibility or that which now comes across the border every day in the Murray River,” he said.
“It’s a lot of water. It’s a lot of challenges.”
Four kilometers of DefenCell flood barriers were transported to Adelaide from Italy to be sent to Riverland, and more than a million sandbags were obtained.
Up to 4,000 properties will be flooded
The reinforcements are part of a $4.8 million flood protection package announced Sunday.
However, Malinouxas said up to 4,000 homes would still be flooded during peak flows.
“Combining so many DefenCell products and now over a million sandbags gives us a lot of confidence that where we can make a difference with these materials, we have the capacity and the ability to do so,” said Mr. Malinauskas.
But truth be told, of course, we can’t protect every home.
“We can’t get that much water across the border and protect every dwelling, which is why we’re still working towards flooding 4,000 properties as a result of these additional inflows.”
Earlier this week, the government declared a major emergency, which gives Police Commissioner Grant Stevens additional powers to manage the flood crisis.
SES CEO Chris Beattie said residents need to take action now and look at the interactive maps available on the SES website to see if their properties will be flooded.
He said those affected need a date to leave their property before it is too late.
“This may be due to road closures in your area, or due to a power outage, or a loss of sewerage or indeed when the floorboard is flooded, but it is important that you decide early and in advance when to leave,” said Mr Beattie. .
He said the dam which is being built to protect the Rheinmark Baringa District Hospital has been completed and a number of other dams across the district are currently under construction.
Waste water should be cut off from Riverland homes
SA Water’s Nicola Murphy told ABC Radio Adelaide that around 150 homes will be cut off from sewage services by December 9 and another 100 are facing disruption.
SA Power Networks warned last week that 2,000 properties would be without electricity in the coming weeks, with some homes and cottages already disconnected.
Ms Murphy said SA Water is working with affected residents to find suitable alternatives, including the use of porters and camp toilets.
“We’re going to do anything we can do to help those residents, and that’s something we’re working through with these people as they make their decisions right now whether to stay in their homes or maybe move during a flood period,” she said.
“What we need to think about is the overall capacity of our network to handle the additional volume of water that’s coming into it, our pumping stations are able to pump that through and we try to make sure we maintain as many services as possible for as many customers as possible for as long as possible.” possible.
“Thus, we are looking to isolate a small portion of the network to protect the rest of the network and keep those services going.”
Ms Murphy said SA Water was also working to prevent any sewage from entering the floodwaters.
Access to health services will be ‘difficult’
Riverland residents and visitors are also urged to plan ahead for their health needs, with road closures imminent.
Michelle Acheson, president of the Australian Medical Association, said mosquito-borne viruses were also a cause for concern.
“If you have scripts that you need for the coming months, go and fill them out now, if you need a Japanese encephalitis virus vaccination, go and get it done now because in the coming weeks health services will be under pressure because people will use them, but it will also be difficult to access them.” .
“There’s a lot of medicine we can do with telehealth, but we can’t give you a viral shot with telehealth, so there are a few things you need to start planning now.”
She urged people to stock up on insect repellent before stocks start to run out.