The Australian Government has released a series maps for low-lying areas in Melbourne, Sydney, Perth, Newcastle, the New South Wales Central Coast and south-east Queensland showing the likely effects of sea-level rise by the year 2100.

Three maps have been produced for each area:

  • low scenarion, which is likely to be unavoidable;
  • medium scenario, the upper end of the IPCC Report, which is in line with recent observations; and
  • high-end scenario which includes ice-sheet melting not in the IPCC projections.

The estimmated sea-level rise under these three scenarios is:

 

  Low Medium High
2030 0.13m 0.15m 0.20m
2070 0.3m 0.5m 0.7m
2100 0.5m 0.8m 1.1m

 

 The maps are available at www.ozcoasts.org.au/climate/sd_visual.jsp

Flood levels at the highest tide in Sydney in 2100 under the "high-end" scenario
Flood levels at the highest tide
in Sydney in 2100
under the “high-end” scenario