Flooding at unprecedented levels has inundated towns and left residents stranded in the Mid North Coast and Hunter region of New South Wales, with parts of Taree, Wingham and Glenthorne of most concern.

NSW State Emergency Services personnel have rescued hundreds of people from floodwaters and rooftops, while thousands have lost power or been isolated by cut-off roads.

Authorities have issued 13 emergency-level alerts, with the Manning River peaking at 6.4 metres at Taree, surpassing the 1929 record flood level.

Follow our live blog below for the latest updates on the unfolding weather situation.