Weatherzone says substantial rain is likely over part of Australia during the next week, with the spring soaking increasing the risk of further inundation towards October.
The Bureau of Meteorology has warned flooding around the state could continue for months as dams are full, grounds are saturated and snow is melting.
"Even light to moderate falls may lead to renewed rises and additional flooding," the bureau said this week.
NSW government ministers and emergency agencies met for the first time on Wednesday as part of a new crisis committee to prepare for disasters and as storms hit multiple areas of the state.
The committee was a recommendation of an inquiry into flooding in NSW earlier this year led by chief scientist Mary O'Kane and former police commissioner Mick Fuller.
Premier Dominic Perrottet said it meant more "boots on the ground and faster responses to protect communities in the event of a natural disaster".
The government has launched new warning systems and already procured additional resources to deal with natural disasters.
Emergency Services and Flood Recovery Minister Steph Cooke said on Thursday essential food and medicines and other supplies were being flown into western communities cut off by floodwaters.
"And that will continue until the community isn't isolated any longer," she told Sydney radio 2GB.
Lessons had been learned from the catastrophic flooding that devastated many communities earlier this year.
"We're really working hard to continue to do better after every event," she said.
There were more emergency vehicles, more aircraft and rescue boats available in high risk areas, while the number of people in emergency call centres had doubled.
"I think the biggest achievement is we've onboarded over 1300 volunteers into the SES - and 300 in the Northern Rivers," she said.
"We are seeing the community step and respond.
"We also have the capability to use those (rescue) aircraft to resupply isolated communities ... to supply fodder to stock that might find themselves stranded on little island on properties."
Major flooding continues on the Namoi River at Wee Waa and is expected to last at least until Friday.
The Namoi could also deliver major flooding at Goangra next week as water heads downstream towards Walgett.
The Macquarie River fell below the major flood level at Warren on Tuesday afternoon.
Major flood warnings are in place on the Namoi, Bogan, Lachlan, Culgoa, Birrie, Bokhara and Narran rivers.
