State of high alert as water rises across NSW

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The water in Cooma back creek is rising and it has residents worried.



Cooma flooding

Water, water … Ray Parr with his mate Brad Stolz on the banks of Cooma Back Creek / Pic: Gary Ramage
Source: The Daily Telegraph


Warragamba Dam

Spillway … Warragamba Dam in western Sydney is close to full capacity / Pic: Craig Greenhill
Source: The Daily Telegraph


Cooma flooding

Deluge … Josh Smith and his wife Diana in Cooma / Pic: Gary Ramage
Source: The Daily Telegraph


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The Sydney Catchment Authority has predicted Warragamba Dam will spill over this evening after heavy rain in catchment areas, and nearby towns are bracing for the deluge.








IT was the downpour that put the state on high alert.


After millions of litres of rainwater poured from swollen rivers into Warragamba Dam yesterday, parents in Sydney’s western fringes were advised to keep children home from school today amid fears the area will be flooded when the dam spills over.

A severe weather warning remains in place for much of NSW – with three-quarters of the state flooded or in danger.

The SES said about 800 residents in the city’s far west are expected to be flooded today, with major roads and bridges at Windsor and North Richmond submerged.

A moderate flood watch was in place for the Nepean-Hawkesbury Valley, prompting SES incident controller for western Sydney Keith Fitzgerald to warn: “People should think seriously about keeping their children home from school and about changing their normal commuting.”

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Warragamba was late yesterday at 93 per cent capacity and expected to spill over for the first time in 14 years.

Motorists can visit www.livetraffic.com or call 132 701 for the latest information regarding state road closures

See all the photos of rain wreaking havoc in NSW here

“We initially thought the dam would spill earlier but there was a slight reduction in rain in the catchment – we were expecting more than 140,000 megalitres to flow into the dam before 10pm but it now looks like that will be 130,000 megalitres,” Sydney Catchment Authority spokeswoman Karen Smith said.

In preparation, the SCA tested four of the dam’s five flood gates between 8.30am and 9.30am yesterday.

Emergency Minister Michael Gallacher said a spill would add slightly to the expected moderate flooding.

The Cataract and Cordeaux dams south of Sydney both spilled late yesterday, but the SES said no homes or roads were affected.

Despite the slight respite yesterday, heavy rain was again expected overnight in a vast stretch of NSW running from the far northwest to the Illawarra coast.

Weatherzone meteorologist Brett Dutschke said the trough would swing over central NSW from today, and also had the potential to soak Canberra with its heaviest rain in at least 23 years. “From Friday to Sunday it will return to central NSW then back to the south and back to the central parts, giving the same places at least two or three days of drenching rain upon drenching rain,” he said.

SES Deputy Commissioner Steve Pearce said the Illawarra, Snowy Mountains and south coast were among the areas with severe weather warnings.

“We’ve got 75 per cent of NSW either in flood or potentially in flood,” he added.

The SES yesterday made evacuation orders for Cooma, affecting about 900 people, at Goulburn for about 600 people and at Cowra for about 60.

Seven river systems – the Murray, Hawkesbury-Nepean, Lachlan, Queanbeyan and Molonglo, Tumut and Murrumbidgee, Bega and Snowy – are under flood warning.

Weather Channel meteorologist Tom Saunders said a pattern of abnormal sea surface temperatures and a record warm Indian Ocean was behind the massive rainfall, setting up a soaked autumn.

“As the current La Nina weakens it was initially expected our rainfall patterns would return to normal by the middle of autumn,” he said.

“However, a new pattern of abnormal sea surface temperatures has developed to our west with a record warm Indian Ocean.

“Australia is surrounded by very warm ocean temperatures. The Indian Ocean has been steaming over 3C higher than normal during the past few months … the warmer seas have increased evaporation which has allowed the atmosphere over Australia to become saturated with moisture – the perfect recipe for heavy rain and flooding.

“The heavy rains should continue through autumn.”

 

 

 

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