Collarenebri residents are preparing for flooding in the area as the NSW Bureau of Meteorology (BOM) expects the Barwon River to peak 6.3 meters this evening into tomorrow.

The river height in the town sits at 6.19 metres, above the minor flood level of 5.8 metres, according to an update at around 4pm today from SES Chief Inspector David Cox.

Recent localised rainfall has caused significant river level rises along the Moonie and Barwon Rivers, while the Little Wier Bridge on Gundabloui Road, around 10-15 kilometres from the Queensland border, was heavily damaged by flood waters over the weekend.

A sandbag pick up point has been set up on the corner of Herbert and George streets in Collarenebri while Community Liaison teams are out and about in town to check in and share vital information.

"If your property is known to become isolated at these heights, prepare early and prepare either to not be at the property and stay with friends or to ensure you have enough supplies," Chief Inspector David Cox said.

"If you know the premises is going to be affected at these heights, we advise to lift furniture, hazardous chemicals and hazardous materials, like fuel in sheds, off the ground and above the predicted flood levels."

Residents who become isolated can call 132 500 to register with the SES, although Inspector Cox said to call 000 in case of a life-threatening emergency.

A map of the affected area from the SES website. IMAGE: SES

The BOM is warning of potential flooding for Walgett later this week as waters head downstream of Collarenebri.

The Barwon River at Walgett is currently at 6.99 metres and rising, well below the minor flood level of 10.50 metres, according to the latest update at 10:55am today at from the BOM.

The damage at the bridge. IMAGE: supplied

For more emergency information, advice, and access to the latest river heights and rainfall observations and forecasts:

• NSW SES: www.ses.nsw.gov.au
• RMS Live Traffic: www.livetraffic.com
• Latest River Heights and Rainfall Observations: www.bom.gov.au/nsw/flood/outerwest.shtml
• Latest NSW Warnings: www.bom.gov.au/nsw/warnings/
• Rainfall Forecasts: www.bom.gov.au/australia/meteye/
• BOM NSW Twitter: www.twitter.com/BOM_NSW