GRACEMERE, Australia (Reuters) - Military aircraft ferried supplies to an Australian town slowly sinking beneath swollen rivers on Monday, as record flooding in the country's northeast severed roads and ports, curtailing coal exports and devastating farmland.
Floods submerged the Capricorn Highway, the major traffic artery through Queensland state, and poured into homes in the sinking town of Rockhampton, sending furniture and refrigerators cascading down torrents of floodwater.
Rockhampton, a community of 77,000 just off the Pacific coast and 600 km (370 miles) north of the state capital Brisbane, was accessible mainly by emergency services boats.
Rescue workers escorted stranded patients out of hospitals, police ordered reluctant residents to leave their homes, and electricity company teams made their way up to abandoned homes to ensure power was switched off.
Snakes slithered their way across the waterlogged highway a few km outside the devastated town.
Resident Reg Wilson said police gave him little choice but to leave his home.
"A policeman came along in a car with a gun on his hip who said 'You be out of here by five o'clock or else'," he said. "When a man with a gun talks to you like that, you get out."
Flooding covering a vast area has caused more than A$1 billion ($1 billion) in damage, forced some 200,000 residents from their homes and hit commodity exports that are a mainstay of the Australian economy.
Coal is Australia's number one export earner, accounting for $55 billion of export revenue each year.
"This is a major natural disaster and recovery will take a significant amount of time," Prime Minister Julia Gillard said while announcing financial aid for flood victims.
"The extent of flooding being experienced by Queensland is unprecedented and requires a national and united response."
One person has died so far in what state Treasurer Andrew Fraser called a "disaster of biblical proportions."
The floods were triggered by cooling "La Nina" ocean currents that produced monsoon rains over the western Pacific and southeast Asia on the heels of months of downpours.
FLOODED HOMES, STRANDED LIVESTOCK
Queensland's interior, normally a vast outback of cattle properties, farms and mines, is now an inland sea, dotted with the roofs of flooded homes and islands crowded with stranded livestock.
The state's emergency coordinator, Police Deputy Commissioner Ian Stewart, told reporters flood waters in Rockhampton stood 9 meters (30 ft) above normal early on Monday.
"Today we'll see resupply of Rockhampton by military aircraft taking supplies into (nearby) Mackay and then road transporting them down to Rockhampton," he said. "That will continue until such time as the road is cut."
Flooded open-pit coal mines and washed out rail lines have reduced coal exports to a trickle. Global miners, including Anglo American and Rio Tinto, have canceled shipments and declared force majeure.
The major Queensland coal port of Dalrymple reopened, but nearly 50 ships stood offshore unable to dock. At least 18 more were waiting outside the port of Gladstone, which was operating at greatly reduced capacity.
"We have just under 1 million tonnes of coal stockpiled. We have a capacity of 6 million tonnes in our stockpile. We are running a very low stockpile," Gladstone Ports Corporation spokeswoman Lee McIvor told Reuters.
Queensland's ports have an annual coal export capacity of 225 million tonnes.
"There are probably about 18 ships waiting, and there probably will likely be more, because the demand for coal around the world is quite high," said McIvor, adding it may take 10 days to restore a washed-out rail link to the port.
Australia is the world's biggest exporter of coking coal used for steel-making and accounts for about two-thirds of global trade. It is also the second-biggest exporter of thermal coal used for power generation.
Rio Tinto and another big coal miner, Xstrata, have each pledged $1 million toward relief efforts.
Queensland is also a top grower and exporter of sugar, but this year will need to buy more raw sugar from rivals Brazil and Thailand to meet sales commitments because of drenched canefields.
The industry group Canegrowers estimated up to 18 percent of the 2010 cane harvest has been abandoned and early plantings for 2011's crop were under water.
Australia is also the world's fourth largest wheat exporter and floods also caused as much as half the crop -- 10 million tonnes -- to be downgraded to less than milling quality.
The transportation of all grain in Queensland was at a standstill, GrainCorp Ltd, the country's largest grain handler, said on Monday.
"We are unable to move anything by rail or, of course, road," said David Ginns, corporate affairs manager at GrainCorp. Transport to port elevators from inland areas had all but ceased.
Harvesting was severely disrupted in many Queensland areas as machinery was unusable in sodden fields.
Though the latest floods were unlikely to affect the harvest in New South Wales, further south, supply concerns pushed up U.S. wheat futures on the Chicago Board of Trade 1.5 percent to a new 5-month high in trading in Asian time zones.
Queensland state Premier Anna Bligh said the effects of the floods could last weeks even if rains eased.
"Given the scale and size of this disaster and the prospect that we'll see waters sitting for potentially a couple of weeks...we will continue to have major issues to deal with throughout January," Bligh told reporters.