The NSW State Emergency Service Commissioner says "the worst is certainly over," after deadly floods swept through the New South Wales north coast this week, leaving more than 30,000 people still affected by evacuation orders and advice on Saturday.

In its latest update the NSW State Emergency Service confirmed its volunteers had conducted more than 406 flood rescues and responded to 2220 requests for assistance.

NSW SES Commissioner Mark Smethurst described the past 24 hours as "hectic," singling out Lismore as the worst hit.

"Lismore is still quite inundated. Most of the flood rescues were of people trapped in their own buildings who did not heed the warnings when they were told to evacuate," he said.



"It's been a real problem up here and certainly a concern of all the emergency services."