Towns face isolation as NSW floods persist

As floodwaters recede in Forbes, NSW towns including Walgett and Collarenebri remain isolated. (Stuart Walmsley/AAP PHOTOS) (AAP)

After months of flooding in NSW's central west, Condobolin residents are about to confront their highest river levels in 70 years.

"The area is already in widespread flood ... Everywhere you look, there is water, water, water," Lachlan Shire Mayor John Medcalf told AAP.