'We're trapped': Australia's mass flood rescues

"There was flooding last year but not this bad. So we've got a place on the other side of the river and we just came over to move our van up to high ground and we're trapped on the other side of the river, with the landslides. So we've been there for a couple of days."

Alicia Pitt and her family are among 18,000 people who have been evacuated from the worst floods to hit Australia in half a century.

Homes and livelihoods destroyed, and authorities say more evacuations may come, after yet another round of torrential downpours.

[Stranded family]: "Where can you take us to?"

[Boat operator]: "To Sackville ferry landing."

Severe weather advisories have been posted in every mainland state in Australia except one, encompassing an area roughly the size of Alaska and 10 million people.

Authorities have begun coordinating with supermarkets to get food and other essentials to the worst hit areas, but the logistics are difficult with entire bridges washed away. At least one big chain is warning of delays.

The toll on wildlife and agriculture is still being assessed.

Mass rescues of pets and livestock are happening, but there are also reports of animals fleeing in droves, becoming stranded, or worse.

"There's a stone cottage under water there."

Ken Anderson's farm has been in his family for 170 years. A few more inches may mean the end of this season's harvest.

"I'll end up losing the fruit there and probably might lose the trees too."

"I'm all over it now (...) So working non-stop the last couple of nights."

No deaths have been reported.

It's a stark contrast from the drought and massive wildfires that hit the country last summer.