Currently it is above sea-level, luckily for the people who live there.
The altitude is 63m or 209ft, according to:
http://www.fallingrain.com/world/AS/7/Melbourne.html
zero feet
Melbourne, Florida is 20 feet (6 meters) above sea level
South Australia is a big place, it varies from below sea level (lake Eyre) to 1435m above sea level at the peak of Mt Woodroffe.
true homeslice
The location of lowest elevation in Australia is Lake Eyre. It is 15 meters below sea level. The location of highest elevation in Australia is Mawson Peak, which is 2,745 meters above sea level.
The Yarra River of Australia has a pollution problem. First of all, Australia has had drought conditions and the water level is below normal. Pollution from people in Melbourne and suburbs has also damaged the river.
Above sea level
Heathmont, a suburb of Melbourne in Victoria, Australia, has an altitude of approximately 120 meters (394 feet) above sea level. Its elevation contributes to the area's scenic views and nearby natural landscapes. The suburb is situated in the eastern part of Melbourne, offering a mix of residential and green spaces.
Lakes Eyre, Illawarra, and Alexandrina are all below sea level in Australia.
Australia's lowest point of elevation is the bottom of South Australia's Lake Eyre Lake Eyre is an extensive 'salt sink' and has only filled to capacity three times in the past 150 years. When Lake Eyre does fill, it becomes the biggest lake in Australia, It is 15 meters below sea level in its lowest point.
Romania is above sea level.
Melbourne Beach, Florida is 10 feet above sea level.