The Murray Darling River system is Australia’s largest river system
and one of the world’s major river systems. The Murray Darling River
system extends from north of Roma in Queensland to Goolwa in South
Australia, and includes three quarters of New South Wales and half
of Victoria.
The 30,000 wetlands of this system are extensive and support
and maintain
the health and productivity of the river system. The Murray Darling
Basin covers more than 1 million square kilometres and it has only
1 exit
flowing
out of Lake Alexandria in South Australia.
It is a vast interconnected
network of streams and rivers. Many manmade structures such as weirs and
dams have now changed the river system from
what it once was. Despite this, it supports a wide range of animal
and plant communities. Many of its tributaries carry water only in times
of
flood and the fish species have adapted to breeding and migrating in
these dramatic times.
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Shipping poses a threat to the Great Barrier Reef. Large ships have run aground on the barrier reef and the potential for oil pollution from such an impact is high.
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