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Western Australia

geography Maturity 11-13 Next article →

Western Australia is the westernmost state of Australia.

WAHighways
WAHighways

It is the largest state in the country. It is also the second-largest subdivision of any country on Earth. The state sits on the edge of the continent. The Indian Ocean borders the north and west. The Southern Ocean lies to the south. The Northern Territory is to the northeast. South Australia is to the southeast.

Hessel Gerritsz - Malay Archipelago and Australia
Hessel Gerritsz - Malay Archipelago and Australia

The geography of the state is very diverse. The Kimberley region has a tropical climate. The interior contains several large deserts. These are the Great Sandy, Little Sandy, Gibson, and Great Victoria Deserts. The southwest and southern coasts have a Mediterranean climate. This means they have specific patterns of wet and dry seasons.

Western Australia Köppen
Western Australia Köppen

Most of the state is a low plateau. The average elevation is about 400 metres. There is very little surface runoff. The land descends sharply to coastal plains in some areas. This creates a feature called an escarpment. The Darling Scarp is a famous example near Perth.

The geology of Western Australia is incredibly ancient. Some parts date back 4.4 billion years to the Hadean Eon. This is when Hadean zircons were formed. The land consists of the Yilgarn and Pilbara cratons. These are very old pieces of the Earth's crust. They merged with parts of India and Africa long ago. In the Pilbara, scientists found evidence of early life. These microbes created stromatolites about 3.48 billion years ago.

Brockman 4 Process Plant, July 2019 03
Brockman 4 Process Plant, July 2019 03

Because the land is so old, it is very eroded. No part of the state rises above 1,249 metres. This peak is Mount Meharry in the Hamersley Range.

The soil in the state is often very poor. It lacks much phosphorus and nitrogen. This makes it difficult for many plants to grow. Farmers must use fertilizers to help their crops. However, heavy machinery and grazing animals can damage the soil. This can lead to compaction. Large-scale land clearing for farming also affects habitats. In the southwest, this has created a biodiversity hot spot. This area has many rare or endangered species. The Leeuwin Current helps keep the marine life very diverse too.

Indigenous Australians have lived here for a very long time. They arrived between 50,000 and 70,000 years ago. They eventually spread across the entire landmass. They were well-established before Europeans arrived. Dutch explorers visited in the 17th century. Dirk Hartog led the first expedition in 1616.

Thevenot - Hollandia Nova detecta 1644
Thevenot - Hollandia Nova detecta 1644

Later, the British claimed the territory in 1827. They established the Swan River Colony in 1829. Captain James Stirling was a key figure here. Perth was founded as the capital city. The name Western Australia was officially adopted in 1832.

Economic growth has been driven by several major industries. Mining is a primary driver of the economy. Western Australia has the world's largest iron ore industry.

2007 Resource production WA-svg
2007 Resource production WA-svg

The state also mines gold and other minerals. Gold rushes in the 1890s caused a large population increase. People moved to areas like Kalgoorlie. To support them, a massive water pipeline was built. The Goldfields Water Supply Scheme was finished in 1903. It carries water from Perth to the goldfields. In the late 20th century, offshore petroleum and gas became important too.

Other industries also support the state. Agriculture is important in the Wheatbelt and southern coasts. Pastoralism happens in the grassland areas. Forestry is common in the southwest. Fishing is also a major activity. This includes pearling and historical whaling.

Whale oil tanks at Albany's Historic Whaling Station, April 2022 01
Whale oil tanks at Albany's Historic Whaling Station, April 2022 01

Most of the 2.965 million people live in the southwest. About 80 percent of them live in Perth.

Perth (AU), Elizabeth Quay -- 2019 -- 0259
Perth (AU), Elizabeth Quay -- 2019 -- 0259

The rest of the state is very sparsely populated. The Trans-Australian Railway and Eyre Highway connect the state to the east.

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🖼️ Images & Media (26)
File:Hessel Gerritsz - Malay Archipelago and Australia.jpg
Hessel Gerritsz - Malay Archipelago and...
File:Thevenot - Hollandia Nova detecta 1644.png
Thevenot - Hollandia Nova detecta 1644.png
File:John Forrest 1898.jpg
John Forrest 1898.jpg
File:2shillingsWestAustralia.jpg
2shillingsWestAustralia.jpg
File:WAHighways.png
WAHighways.png
File:Western Australia Köppen.svg
Western Australia Köppen.svg
File:RottnestQuokka.jpg
RottnestQuokka.jpg
File:Black Swans.jpg
Black Swans.jpg
File:Perth (AU), Elizabeth Quay -- 2019 -- 0259.jpg
Perth (AU), Elizabeth Quay -- 2019 -- 0259.jpg
File:Western Australia population T.svg
Western Australia population T.svg
File:Roebourne, Holy Trinity Church.jpg
Roebourne, Holy Trinity Church.jpg
File:Perth sivan koyil.jpg
Perth sivan koyil.jpg

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