The marsupial, dubbed Raine, is now dry, heat and rested due to the quick-thinking of a Queensland household.
Nonetheless the World Wildlife Fund (WWF) has fears "doubtlessly" 1000's of native animals have been displaced or killed by the floods inundating New South Wales and south-east Queensland.
The flooding disaster comes lower than a month after koalas have been formally declared an endangered species in NSW, Queensland and the Australian Capital Territory.
LIVE COVERAGE:Extra storms for NSW, Queensland
Darcy Modina and her household first noticed Raine and her mom on their 10 acres of Brisbane River-front land at Wivenhoe Pocket a couple of months in the past.
However on Saturday the Modinas noticed the younger koala in hassle; she was drenched and trembling close to the river edge, her mum was to not been.
When evacuation orders got here in Ms Modina knew she could not depart Raine behind.
"As quickly as we wrapped the towel round her she was open to being heat and letting us maintain her," Ms Modina mentioned.
"She wasn't scared in any respect, simply exhausted."
Raine discovered her option to the Somerset Sanctuary the place she was nurtured again to full well being by proprietor Petrina Paidel.
"A truck pulled up and handed me a inexperienced bag with a koala in it. She was nonetheless soaking moist. I made a decision to name her Raine for apparent causes," Ms Paidel mentioned.
"I dried her off and picked up some leaf and ready particular milk formulation and she or he ate nonstop for days. She's been the right home visitor".
Raine has since been positioned into the care of Marilyn Spletter, who has hand-reared greater than 120 child koalas.
Epic clean-up begins in flooded Queensland and NSW
Whereas Raine's story proved to have a cheerful ending, WWF fears for numerous different native animals.
"There are doubtlessly 1000's extra wildlife victims in Queensland and New South Wales nonetheless awaiting rescue after document rainfall," WWF mentioned.
Animal rescue group WIRES instructed 9news.com.au the workplace has fielded over 100 flood-related wildlife rescue calls throughout its Clarence Valley and Northern Rivers department areas.
A spokesperson mentioned communications are being hampered within the Northern Rivers area resulting from flood affected energy strains and towers however within the metro areas, calls are starting to come back in from Moorebank, Cobbitty and the Hawkesbury space.
"We expect these flood associated calls to proceed because the waters subside and native animals which were pressured out of their habitat search meals and dry floor," the spokesperson mentioned.
Among the many profitable WIRES rescues was a waterlogged possum on a porch in Mascot.
Ongoing moist climate is hampering rescue efforts, as wildlife careers cannot entry hard-hit areas.
In response to this the WWF have began an emergency flood attraction for wildlife.
"These floods have left many animals stranded and wildlife carers and vets in determined want of assist," Dr Prishani Vengetas, a veterinarian and WWF-Australia's Wildlife Restoration Challenge Coordinator mentioned.
"Orphans like Raine would require specialist care if they will survive, so we'll be working to deploy funds the place they're wanted most.
"As soon as the waters subside, we'll additionally assist flood-damaged tree planting initiatives - essential to the survival of koalas - get again on observe."
The intense moist climate is way from over, with flood-affected communities in northern NSW and south-east Queensland bracing for extra storms.
Thunderstorm exercise will renew over the weekend, the BoM mentioned.
"Widespread showers and thunderstorms exercise growing throughout jap NSW, from the mid-north coast all the best way right down to the Victorian border and lengthening inland Sunday and Monday," senior meteorologist Dean Narramore mentioned.
An evacuation order has been re-issued for components of Decrease Portland alongside the Hawkesbury River north-west of Sydney.
As of 10.45 am this morning, there are greater than 154 evacuation notifications throughout NSW; these are break up into evacuation orders and warnings.
In the meantime, Queensland residents are being urged to stay vigilant amid potential storms this afternoon.
QFES Deputy Commissioner Mike Wassing says it is too early to inform the place storms will hit.
"The prediction's that these storms will in all probability roll on this afternoon and so we're supporting the native communities by way of clean-up operations," he instructed Right now.