These animated graphs show how extreme NSW's record-breaking flooding and rainfall is

Here, you can see the flooding and rainfall in context with historical data, with some areas breaking longstanding records for river heights

• Tuesday - Australia floods live updates: NSW and Qld weather warnings, heavy rain and road closures

Flooding in NSW has forced the evacuation of at least 18,000 people, with areas on the mid-north coast receiving as much as 890mm of rain in the past week.

The flooding on the mid-north coast is the worst since 1929, according to the emergency services minister, David Elliot.