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Brace Yourself, Sydney As More Rain Is Set To Come For Flood-Hit NSW

Another massive rain occasion is heading to Sydney, with the potential to trigger Sydney’s principal reservoir, Warragamba Dam.

According to the Guardian, a low-pressure trough will become a low, bringing widespread falls and thunderstorms, with the heaviest rain to hit Sydney from Sunday through to Monday.

Ben Domensino, a senior forecaster at Weatherzone, mentioned that for the flood-hit Lachlan catchment in central NSW, the system will probably drop another 30-50mm of rain. He said, “It’s likely to cause some renewed flooding, particularly in the central west of NSW.”

The Bureau of Meteorology is also forecasting 30-50mm for Sunday, “with heavy falls possible in the west” of the city.

Domensino warned that Sydney could be collecting as much as 100mm on Sunday into Monday.

The Guardian further confirms that NSW’s regional dams are 92% full, with some at or above capacity. Burrendong in central NSW is at 129% capacity, making use of its flood zone.

Sydney’s reservoirs are also at 96.3% capacity, with Warragamba – which holds about 80% of the city’s water – at about 100%.

“Warragamba is not spilling but is in drawdown operations to reduce the storage from the full supply level,” a WaterNSW spokesman revealed.

“The storage is kept at one metre below full supply level, however that target is unlikely to be reached before the weekend,” he further said.

As per The Guardian again, Warragamba is currently receiving about 7.5 gigalitres of inflow a day and about 9GL a day is being released to create “airspace” to accommodate some of the expected falls.

The bureau’s forecast for Warragamba is currently at 25-50mm of rain on Sunday.

More rain is due to follow within days as another low-pressure trough stretching from Queensland to Victoria moves eastwards.

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