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Lake Burrumbeet
Lake Burrumbeet is a large but shallow eutrophic lake in central western Victoria, Australia. Located west of Ballarat and west of Melbourne, the lake has been progressively emptying since 1997 and was declared completely dry in 2004. It has however in recent years refilled because of good rainfalls, making water sports in the lake once again possible, with recreational jet skiing and boating taking place in the winter of 2010. The lake is a major wetland for the region because of its size and is utilised as a recreational area for boating, fishing and camping.
Burrumbeet is the largest of four shallow lakes in the Ballarat region covering approximately . The lake reserve is of important historical significance as many Aboriginal camp sites and areas of geological interest are located around its foreshore.
==Physical features and hydrology==
The lake is a large open water body with a surface area of approximately . Burrumbeet Creek is the main input to the lake with some other catchment areas to the north and south. The flow of the creek is supplemented by a release of of treated waste water per year from the Ballarat North Treatment Plant. The lake outlet is situated in the south-west shore of the lake and flows into Baillie Creek, which is a tributary of Hopkins River. The outlet is controlled by a series of boards which are raised or lowered depending on water levels. The lake is characterised by a sand and mud bottom with rock outcrops.
Surrounded by grazing land the lake has suffered from a rise in salinity levels due to abnormally dry conditions. This is reflected also by a fall in lake levels. High nutrient levels and algal blooms occur in the lake from time to time. The lake is often discoloured and has seasonal changes in turbidity levels.
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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