NSW SES say they are responding to ongoing flooding across multiple districts in Western NSW as floodwater from Queensland moves south. 

"We have a significant number of volunteers and pre-deployed assets in Western NSW, along with local volunteers actively supporting the community." a spokesperson said.

"Moderate to major flooding is expected on the Paroo and Warrego Rivers early next week, similar to the 1990 and 2010 floods.

"Communities could be isolated for up to six weeks in areas including Wanaaring, Hungerford, Yantabulla, Fords Bridge, Gumbalie, and Enngonia.

"Shorter isolation periods are expected for Wee Waa, Pilliga, and Gwabegar."

NSW SES is assisting with resupplies for isolated communities over the coming weeks.

Some roads are already impassable, impacting supply routes and limiting access to services.

Minor flooding is likely to occur near Walgett over the weekend. A minor flood warning has been issued for the Barwon River. 

State Emergency Services (SES) cautioned people to not enter floodwater and avoid low-lying areas in Walgett and surrounds. 

The heavy rain has led to isolated properties in Bourke and Walgett districts. 

IMAGE: Hazard Watch website Western NSW Update as at Saturday 5 April, 4.45pm.

Goodooga and surrounding areas have been issued a flood advice. 

The Birrie River and Bokhara River are expected to remain above the minor flood level until Sunday. 

The Bokhara River is currently at 2.86 metres and falling after peaking at 3.16 metres on Tuesday morning while the Birrie River is at 3.2 metres and falling. 

Further upstream in Queensland multiple flood peaks at the Balonne, Culgoa, and Narran River are occurring leading to renewed flooding along the Culgoa, Birrie, Bokhara, and Narran River over the weekend and into next week. 

A NSW SES spokesperson said they are prepared for any flood events in Northwestern NSW.

"We have a large amount of extra resources in the area. We've got helicopters, additional high clearance vehicles, as well as, volunteers and SES crew from Collarenebri, Walgett, Bourke, and Wanaaring."

High clearance vehicle and helicopter used by SES. Photo: NSW SES

The SES said they have to wait until they see peaks further upstream to be able to predict when the water moves further south.

Anyone who requires assistance during the storm is encouraged to call the NSW SES on 132 500. 

"They are able to get a reference number from the operations centre and they call their providers, supermarkets, chemistry, pharmacies, or AG stores in Bourke or Walgett, place and pay for their orders and organise transport to isolated properties."

Landholders who need assistance with livestock management can call the Agricultural and Animal Services hotline on 1800 814 647.