Tasmania - Geography

Geography

Tasmania’s landmass of 68,401 km2 (26,410 sq mi) is located at 42°S 147°E / 42°S 147°E / -42; 147Coordinates: 42°S 147°E / 42°S 147°E / -42; 147, right in the pathway of the notorious "Roaring Forties" wind that encircles the globe. The island is surrounded by the Indian and Pacific Oceans and separated from mainland Australia by Bass Strait.

As the island has been volcanically inactive in recent geological times, Tasmania has many rounded smooth mountain ranges. Tasmania is the most mountainous state in Australia. The most mountainous region is the Central Highlands area, which covers most of the central western parts of the state. The Midlands located in the central east, is fairly flat, and is predominantly used for agriculture, although farming activity is scattered throughout the state. Tasmania's tallest mountain is Mount Ossa at 1,617 metres. The mountain lies in the heart of the world famous Cradle Mountain-Lake St Clair National Park. Much of Tasmania is still densely forested, with the Southwest National Park and neighbouring areas holding some of the last temperate rain forests in the Southern Hemisphere.

The Tarkine, located in island's far North West, is the largest temperate rainforest area in Australia covering approximately 3,800 square kilometres (1,500 sq mi). With its rugged topography, Tasmania has a great number of rivers. Several of Tasmania's largest rivers have been dammed at some point to provide enough hydroelectricity for the entire state's needs. Many rivers begin in the Central Highlands and flow out to the coast. Tasmania's estuaries (although in many cases named rivers) are mainly situated around major population centres.

The Derwent River flows south and reaches the coast at Hobart; the Tamar River flows north from Launceston; the Mersey River also flows north to the North West coast at Devonport, and the Franklin and Gordon Rivers flow west and meet the coast at Strahan. The South Esk River is the longest river in Tasmania. It starts in the mountains at Fingal and flows through Avoca, Evandale, Longford, Hadspen and finally Launceston. The river is dammed at Launceston's Trevallyn Dam and used for the city's hydroelectricity. Although most of the water is dammed at Lake Trevallyn, some flows on into the Cataract Gorge, where it becomes a tributary to the Tamar Estuary, and the outflow from the power station also joins the Tamar River downstream of Launceston.

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