Everything about Lake Argyle totally explained
Lake Argyle is
Australia's second largest artificial
lake (by area), part of the
Ord River Scheme, near the East Kimberley (
Western Australia) town of
Kununurra, located on the
Kimberley Plateau about eighty kilometres inland from the
Joseph Bonaparte Gulf.
The construction of the dam was completed in 1972. The Ord River dam is 335 metres long, and 98 metres high. The earth-fill only dam wall at Lake Argyle is the most efficient dam in Australia in the ratio of the size of the dam wall to the amount of water stored.
Lake Argyle normally has a surface area of about 1,000 square kilometres. The storage capacity, to the top of the spillway, is 10,763,000 megalitres. The lake filled to capacity in 1973, and the spillway flowed until 1984. Lake Argyle's usual storage volume is 5,797,000 megalitres, making it the second largest reservoir in Australia (the combined
Lake Gordon/
Lake Pedder in
Tasmania is the largest.) At maximum flood level, the lake would hold 35 million megalitres of water and cover a surface area of 2,072 square kilometres.
Lake Argyle (together with
Lake Kununurra) is part of the
Ord River irrigation scheme. There are currently some 150 square kilometres of farmland under irrigation in the East Kimberly region.
The damming of the Ord River has caused major changes to the environment. Flows to the Ord River have been severely reduced. Within Lake Argyle itself a thriving new eco-system has developed. The lake is now home to 26 species of native fish and a population of
freshwater crocodiles currently estimated at some 25,000. The damming of the Ord River also turned a number of low lying ridges into islands. Crocodiles can sometimes be seen on these islands along with a number of birds.
Image:Lake_Argyle_Western_Australia_DSC03731.jpg|View from downstream viewing the Ord River after it leaves Lake Argyle.
Image:Lake Arglye Dam Wall DSC03854.JPG|Dam wall
Further Information
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