State Emergency Service spokesman Phil Campbell told Australian Broadcasting Corp radio that the Bellinger River in the mid north region of New South Wales state has broken its banks on Tuesday and is expected to flood homes in the town Bellingen.
He says recent rains would leave neighboring villages isolated for days and helicopters are on hand for evacuations.
To the north of New South Wales, most of Queensland state has been flooded for weeks. To the south in Victoria state, fire fighters have had little rain to help them battle wildfires that have killed at least 189 people.
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