Industry & Investment NSW regional director for western NSW, Greg Markwick, floodwater would come down into the Darling from the the Paroo, Warrego, Culgoa, Bokhara, Birrie and Narran river systems.

“I urge all landholders in those areas who have not already done so, to make sure stock are moved to higher ground before the waters arrive.”

Mr Markwick said most farmers had been preparing for record flood levels, with mustering teams working around the clock.

“Two helicopters have been brought into the area to provide assistance with fodder drops, mustering and reconnaissance of stock," he said.

“Already there have been a number of airlifts of stranded dry stock over the past few days, but landholders need to be aware that airlifting of wet stock from boggy conditions is not generally a practical option due to the low survival rates, safety concerns for staff entering floodwaters and the high cost.

“Animal welfare is the priority when requests for aircraft assistance are being assessed and each case will be assessed on its’ merits.”

Mr Markwick said already saturated soils and high pasture growth made the full impact of the floods less predictable.

“Only time will tell whether preparations by farmers are sufficient to withstand the depth and spread of the flooding,” he said.

“Many properties could be inundated or cut off for six to eight weeks and will require help with aerial replenishment of fodder supplies after the first few weeks.”

Landholders seeking assistance with livestock problems should contact their LHPA ranger or contact the I&I NSW Hotline on 1800 814 647.