NSW flood crisis continues with storms forecast, water rising at Condobolin, 23 SES emergency alerts in place

Police have found a body during the search for a man who has been missing since a catastrophic flash flood tore through the Central West NSW town of Eugowra on Monday.

The discovery comes three days after 60-year-old Diane Smith's body was also found near the small town.

NSW Police said the body had been found on the outskirts of town after a wide-ranging search, and believe it to be that of missing 85-year-old man Ljubisa 'Les' Vugec.

Meanwhile, authorities are advising the NSW flood response will need to be ongoing until "early next year" as central west communities continue to manage major flooding.

SES Superintendent Ashley Sullivan said with backup from New Zealand and Singaporean agencies now in place and rivers unlikely to recede soon, plans were being made for months of flood operations.

"We're still going to be with this flood operationally assisting the community until early next year and it's going to make a huge difference to allow our teams to get some rest to get back out there and continue focusing on the community and make sure they're safe," he said.

"Our concerns are around isolated properties, they cannot easily get in and out.

"So our focus has been making sure that we can get fresh food and milk out to these isolated communities."

The NSW State Emergency Service has rescued nine people and answered more than 245 calls for help in the last 24-hour reporting period, with major flooding in eight different catchments.

Residents and authorities are regularly assessing a makeshift levee, which spans nearly 4 kilometres, separating the floodwaters from Condobolin's central business district.

The Lachlan river is at 7.37 metres and rising, with further rises to 7.8m possible on Wednesday, with the flood peak now predicted to arrive two days later than previously thought.

Homes in low-lying areas have been inundated in what is already the town's worst flood on record.

Upstream at Forbes, floodwaters had still not receded and affected homes and businesses had been under water for days in its worst flood in 70 years.

Most of the town remains subjected to an evacuation order for the third time in less than a month.

Attention is also turning to vast areas of farmland that has, or will be, inundated or isolated.

Elsewhere, clean-up efforts are continuing at towns including Eugowra, where most of the homes and businesses were destroyed in a deadly flash flood on Monday morning.

During a visit to the disaster area on Friday, NSW Premier Dominic Perrottet promised to rebuild the town "in a strong way".

New flash-flood risk

SES spokeswoman Andrea Cantle said a wet weather forecast had led to a flood watch issued for the Tumut River, Upper Murray and the Belubula River at Canowindra.

"It's forecast to not be as severe as last weekend, however with storms it is unpredictable as to exactly the location and how much rain will fall," she said.

"So there still is a risk of flash flooding because the catchments are full."

The Bureau of Metrology has issued a warning for damaging winds and large hailstones for a large part of far west NSW and the western Riverina.

There is also a warning of winds up to 90 kilometres per hour for parts of the southern ranges, southern and central tablelands and an area in and around the northern tablelands.

SES teams will spend today tying down any loose items around homes in Forbes, Parkes and Condobolin, with strong winds also set to blow through those areas.

There are 108 SES warnings across the state, with 23 of those at emergency level.

Emergency warnings remain in place across other parts of the state as well, including at Moama and Cummeragunja on the Murray River.

Parts of those communities have been subject to an evacuation order for a month.

In the north, some villages near Bourke, Collarenenbri and Walgett were all told to leave more than a fortnight ago due to prolonged flooding along three different river systems.

The small town of Tilpa has been evacuated, and several areas in the Riverina are subject to evacuation or shelter now warnings due to major flooding in the Murrumbidgee River.