The New South Wales north coast town of Forster has been cut off by floodwaters as heavy rain continues to lash the region.
Flood-weary eyes are watching the weather as a slow-moving rain cell stalls over much of the northern coast.
Steve Lawrence from the local State Emergency Service says 18,000 people at Forster are isolated.
"We've just had news that Forster is now isolated, that's due to some very heavy rain laying around, rather than riverine flooding," he said.
Two people were rescued this morning from the roof of their car as they tried to cross a flooded road near Taree.
It was one of five rescues to take place today.
The Williams Rivers in Dungog is peaking but is below the level of houses.
Nearly 200 millimetres of rain has fallen in the catchment since yesterday morning, while more than 230 millimetres was recorded at Tuncurry on the central coast.
Hunter Region controller Greg Perry says the situation has been made worse by two recent floods.
"It's a fair large amount of water plus what we already had there from last week, coupled with the fact there was still a lot of water still sitting around from the January long weekend," he said.
"It just seems to get progressively worse each time."
Rain eased in Sydney overnight but there is still a flood warning current for North Richmond and Putty Road.
Jennifer Finlay from the State Emergency Service (SES) says conditions appear to be easing.
"Today we should see some more rainfall and then we're expecting the showery conditions to stay around the Hunter and go up the Mid North Coast around the Northern Rivers," she said.
"Hopefully around the Sydney area we'll see that rain ease up and the Hawkesbury Nepean should come back down."
The SES has received more than 600 calls for help since the downpour began, most of them from Sydney and the Hunter region.
© ABC 2013
18:19 EDT Some cattle stations on the Barkly Tablelands of the Northern Territory are reporting the first decent rainfall in two years.