Stranded Oakhampton Heights residents had a two-hour window to stock up on supplies on Thursday while they wait for floodwater to recede.
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The SES escorted residents on a 4WD track through council land at Walka Water Works and private properties, which brought them out at Aberglasslyn.
They also helped residents who were isolated and did not have a 4WD to access the track.
Floodwater on Scobies Lane blocked direct access to the suburb on Wednesday morning, leaving about 100 residents isolated.
Resident Andrew Cant said it was “part of living in the area” and usually happened “on average every two to three years”.
“Scobies Lane is quite low in one place, so it fills up when it rains heavily,” he said.
“There’s about a metre of water over the road.”
An SES spokesman said residents could be stranded over the weekend as major flooding at Bulga worked its way down the Hunter River.
He said flood water at Maitland was falling slowly, and it would take a few days for water to recede across the area.
Low-lying properties will remain inundated for several days but conditions are expected to ease further on Thursday night, he said.
Access to Dungog was restored on Wednesday and the detour road to Torryburn was flood-free on Thursday.
Wallalong and Osterley remain isolated along with parts of Millers Forest, Seaham, Clarence Town, Nelsons Plains, Hinton, Woodville, Raymond Terrace and Gillieston Heights.
The evacuation warning in Raymond Terrace was lifted on Thursday and residents were allowed to return to their homes.
SES volunteers visited isolated areas on Wednesday via helicopter or flood boat.
“There are properties that are still isolated, and if they need any assistance or some nappies or fresh milk to get them through the next day or two they can get in touch with us,” the spokesman said.
The spokesman urged motorists to be aware of local road closures and said they may change as floodwater moves downstream.
He also warned motorists to avoid unnecessary travel to affected areas.
“There are local roads closed and restricted access to towns but things are improving,” he said.
Police have warned motorists not to drive or walk through floodwater, even if it is stagnant.
Police said motorists would be fined if they did not heed the warning.
