Lake Dulverton | |
---|---|
Location in Tasmania | |
Location | Central East, Tasmania |
Coordinates | 42°18′35″S147°22′56″E / 42.309651°S 147.382304°E Coordinates: 42°18′35″S147°22′56″E / 42.309651°S 147.382304°E |
Type | Sandstone lagoon |
Primary inflows |
|
River sources |
|
Primary outflows | Dulverton Rivulet |
Catchment area | 3,430 ha (8,500 acres) |
Basin countries | Australia |
Max. length | 2.64 km (1.64 mi) |
Max. width | 1.62 km (1.01 mi) |
Surface area | 233 ha (580 acres) |
Average depth | 2–3 m (6 ft 7 in–9 ft 10 in) |
Max. depth | 3 m (9.8 ft) approx. |
Surface elevation | 400 m (1,300 ft) AHD |
Islands | Mary's Island |
Settlements | Oatlands |
References | [1] [2] |
Lake Dulverton is a 230-to-233-hectare (570-to-580-acre) [2] shallow lake or sandstone lagoon located adjacent to the town of Oatlands in the Southern Midlands region of Tasmania, Australia.
The lake has an uneven shoreline with many low sandstone cliffs and overhangs. The only island in the lake, Mary's Island, is a small sandstone rock roughly 80 metres (260 ft) long with a few cedars growing on it. The lake dried up in 1993 and remained dry for years until heavy rains in August 2010, filled the lake to near full supply level. During this dry period, two levees were built across the lake dividing it into three sections. Only the smallest section near the Callington Mill was able to remain full.
The floor of the lake is composed of peaty soils, rock and sand. When full, the waters of the lake quickly fill with pondweed and numerous waterbirds. The lake forms part of a wildlife sanctuary. [1]
Tasmania is an island state of Australia. It is located 240 km (150 mi) to the south of the Australian mainland, separated by Bass Strait. The state encompasses the main island of Tasmania, the 26th-largest island in the world, and the surrounding 1000 islands. The state has a population of about 541,000 people as of September 2020. The state capital and largest city is Hobart, with around 40 percent of the population living in the Greater Hobart area.
Protected areas of Tasmania consist of protected areas located within Tasmania and its immediate onshore waters, including Macquarie Island. It includes areas of crown land managed by Tasmanian Government agencies as well as private reserves. As of 2016, 52% of Tasmania's land area has some form of reservation classification, the majority is managed by the Tasmania Parks & Wildlife Service. Marine protected areas cover about 7.9% of state waters.
The Aboriginal Tasmanians are the Aboriginal people of the Australian island of Tasmania, located south of the mainland. For much of the 20th century, the Tasmanian Aboriginal people were widely, and erroneously, thought of as being an extinct cultural and ethnic group that had been intentionally exterminated by white settlers. Contemporary figures (2016) for the number of people of Tasmanian Aboriginal descent vary according to the criteria used to determine this identity, ranging from 6,000 to over 23,000.
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The Midlands is a region of Tasmania between Launceston and Hobart. It also refers to the relatively flat, dry agricultural area, so named because it covers the region between the two cities. Its name is probably also influenced from the Midlands in the United Kingdom. It lends its name to the Southern Midlands Council, Northern Midlands Council, and the Midland Highway. The region is sometimes conflated or confused with the adjacent region of the Central Highlands—with the added term Tasmania's heartland.
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The geology of Tasmania is complex, with the world's biggest exposure of diabase, or dolerite. The rock record contains representatives of each period of the Neoproterozoic, Paleozoic, Mesozoic and Cenozoic eras. It is one of the few southern hemisphere areas that were glaciated during the Pleistocene with glacial landforms in the higher parts. The west coast region hosts significant mineralisation and numerous active and historic mines.
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Lavinia State Reserve, formerly Lavinia Nature Reserve, is a 68 km2 protected area on King Island, lying at the western end of Bass Strait and belonging to the Australian state of Tasmania.