Hundreds of Australians in the country’s southeast, which has been ravaged by floods, were rescued by helicopter and boat on Tuesday. It came after rivers rapidly rose, cutting off entire towns as well as badly affecting houses, highways, bridges and farms.More than a dozen helicopters were deployed by emergency crews in order to rescue people trapped on rooftops in the worst hit towns in News South Wales, according to state officials.Over 200 flood rescue operations were conducted in the state over a 24 hour period to Tuesday morning while there are still 24 emergency warnings remaining.In the rural town of Forbes, officials were forced to bring forward the evacuation order by two hours after the floodwaters rose more quickly than expected.It was the second time in as many weeks that the small town with a population of only 8,000 was hit by a major flood. South Eastern Australia has been badly hit by flooding (Image: NSW Rural Fir Service ) Homes have been damaged by the flooding (Image: Andrew Gee )Around 600 properties in Forbes are likely to be flooded as the local Lachlan River is set to match water levels seen in the 1952 floods, according to officials.Speaking to ABC television, Mayor Phyllis Miller bemoaned the town’s bad fortune.She said: “They can’t believe this could happen twice in such a short period of time.”I’m an optimist in my life but this is really heartbreaking.”READ MORE: Russia releases strange video of Lavrov claiming he’s fit and wellEastern Australia is currently facing it’s fourth major flood of the year with the latest one now in its third month.The excess rainfall has been caused by an unusual multi year La Nina weather phenomenon.Over the weekend heavy rain hit parts of southwest New South Wales and northeast Victoria.For example, Cowra which is 300 km (186 miles) west of Sydney was hit by a deluge of 121 mm (4.8 inches) over 24 hours from Sunday to Monday morning,DON’T MISS: China ’embarrassed’ by Russia’s military operations, says US official [REVEAL] Putin henchman welcomes savage sledgehammer killing of Russian soldier [INSIGHT] Australia free trade deal gives ‘far too much for far too little’ [SPOTLIGHT] According to data, this was the highest rainfall in the area for 118 years.Emergency services have indicated that they will be undertaking the biggest flood rescue operation in New South Wales history.New South Wales premier Dominic Perrottet indicated that the federal government would deploy an extra 100 defence personnel to assist.He added that volunteers from New Zealand while the state has also asked for assistance from the United States and Singapore.