Portugal Colonial - Australia orders 200,000 to flee floods, city of Sydney spared

Authorities issued severe rain and wind warnings for a 400-kilometre (250-mile) stretch of the coast as water levels rose rapidly -- including in suburbs around Sydney, Australia's largest city and home to five million people.

The unpredictable storm front has crawled southwards along the east coast from Queensland to New South Wales, creating havoc as rivers and reservoirs broke their banks with water swamping homes up to their roofs.

A low-pressure system sat off the coast hundreds of kilometres north of Sydney, dumping the heaviest rain in that area and sparing the city from a feared downpour, said meteorologist Ben Domensino of Weatherzone.

"Sydney escaped the heaviest falls today," he told AFP, predicting that the storm would weaken by Friday.

The Warragamba Dam in southwestern Sydney, which supplies 80 percent of the city's water, has been spilling over since the early hours of Wednesday.

The forecast of peak overflow at the dam was downgraded by nearly half on Thursday because rainfall in the dam's catchment areas was less than had been predicted.

- 'Unpredictable' -

Major floods are still under way in some areas west of Sydney along the Hawkesbury and Nepean rivers -- which snakes across the city's suburbs -- said a spokeswoman for the New South Wales bureau of meteorology.

"That's a system that is very big and it will take a while for it to ease off," she warned.

In the historic town of Windsor -- where many of Australia's oldest surviving European buildings are -- Paul Caleo joined other locals watching the Hawkesbury River rise above the local bridge, cutting off access to homes and farms.

Across the submerged bridge, an almost 120-year-old home stood alone on high ground surrounded by floodwaters.

"The river by its very nature is unpredictable," Caleo said.

Along Sydney's historic harbour, Taronga Zoo prepared for an influx of injured wildlife from torrential rainfall and flooding.

The first fear was for young wildlife, small animals –- including echidnas and bandicoots -– and birds unable to escape surging floodwaters.

Heavy downpours can make birds' feathers so waterlogged they are unable to fly, a spokeswoman told AFP.

As the floodwaters recede, concern will turn to the animals living in fresh water, including platypuses.

New South Wales' emergency services said more than 70 evacuation orders were still in force across the state.

"Many people are waking up today to see much of our state underwater," New South Wales Premier Dominic Perrottet said earlier in the day.

"If you are subject to one of those evacuation orders, please get out," he told a news conference, explaining that the evacuation orders affected 200,000 people.

- 'We will be with you' -

Scientists say climate change is making Australia's floods, bushfires, cyclones and droughts more frequent and more intense.

"Australia is at the forefront of severe climate change," said environmental expert Hilary Bambrick of the Queensland University of Technology.

"Temperatures are rising faster in Australia than the global average, and higher temperatures mean the atmosphere holds more moisture, meaning rainfall events are becoming more extreme."

Across New South Wales, flood levels have climbed to the highest level in decades during the flooding disaster.

In towns such as Lismore in the state's northeast, which is now cleaning up as flood waters retreat, people had clambered onto their rooftops, sometimes waiting many hours to be rescued from rising waters.

"Many people today in the Northern Rivers and over the last 24 hours have returned home, and they have returned home to devastating scenes," state premier Perrottet said. "My message is we will be with you."

L.Mesquita--PC