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Toolibin Lake
Toolibin Lake is a seasonal fresh to brackish water perched lake or wooded swamp, in south-western Australia. The lake is contained with a nature reserve and it is located about south-east of Perth, in the Shire of Narrogin, and east of the town of Narrogin, in the Wheatbelt region of Western Australia. The lake is listed by the Australian Government as a threatened ecological community under the ''Environment Protection and Biodiversity Conservation Act 1999''.
==Description==
The lake lies in the catchment of the upper Blackwood River at an altitude of above mean sea level. It is about in area and in diameter, has a maximum depth of , and is one of the last remaining inland freshwater lakes found in south-western Australia. It is one of a chain of wetlands occupying a palaeodrainage valley forming part of the northern Arthur River system. Most of it is covered with a woodland of water tolerant tree species, with a large open area on the eastern side.〔 Many other Wheatbelt wetlands formerly supported a vegetation community and ecosystem similar to that of Toolibin, but clearing for agriculture has resulted in most such sites becoming saline with a concomitant loss of emergent vegetation. Toolibin is the only major lake in the catchment that has not become completely saline.〔
Toolibin Lake lies in a low rainfall area of the Wheatbelt with an average annual rainfall of 400 mm, mainly falling in May–August, with annual evaporation of 1800 mm. It usually only holds water at certain times of year; sometimes drying out completely for several years;〔 sometimes holding water for extended periods.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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