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Lake George (or Weereewa in the indigenous language) is a lake in south-eastern New South Wales, Australia. It is about 40 kilometres north-east of Canberra along the Federal Highway en route to Sydney. ==Geography / Geology== Lake George is an Endorheic lake, as it has no outflow of water to rivers and oceans. The lake is believed to be more than a million years old. Originally, small streams drained its catchment into the Yass River, but then the Lake George Escarpment rose due to major crustal movement along a strong fault line, blocking this drainage and forming the lake. Lake George has in previous Ice Ages been much larger and deeper. The thickness of sediment beneath the lake exceeds , according to a Bureau of Mineral Resources Canberra drilling programme in the 1982/83 summer. The oldest sediments, which lie some distance above the bedrock, were dated at 3–5 million years using spore and pollen analysis and magnetic reversal stratigraphy. At long and wide, Lake George is long, largely flat and extremely shallow, with a very small catchment. Resultant evaporation rates as well as a tendency for strong winds to blow the water back on itself explain the mysterious filling and drying episodes on both short term (hours) and long term (years) time scales that have been observed. The lake's depth when full can range from ; however in many areas it is only around deep. Its deepest point has been measured as . When full, the lake holds about of water. Between the late 1980s and mid-1990s, the lake lapped the Federal Highway on its western edge. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lake George (New South Wales)」の詳細全文を読む スポンサード リンク
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