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抚仙湖地处云南高原东部,是我国地壳断陷形成的第二深水湖。湖面海拔1721米,面积211平方公里,平均水深89米,最大水深155米,为滇东湖群中面积仅次于滇池的大湖。除湖盆南北两端为面积不大的湖积—冲积平原外,四周均被石灰岩、砂砾岩、玄武岩组成的断块山所环绕。湖岸陡峭,植被稀疏,在温湿气候条件下,发育了厚达数十米的疏松风化壳,为现代湖泊沉积提供了丰富的碎屑物质。湖岸间歇性山间小溪源短流急,每年雨季,暴雨洪流携带大量碎石、泥砂倾泻入湖充填湖盆。
Fuxian Lake is located in the eastern part of Yunnan Plateau, China’s crust faulted formed the second deep-water lake. Lake elevation of 1721 meters, an area of 211 square kilometers, an average depth of 89 meters, the maximum water depth of 155 meters, is the East Lake area in the area after Dianchi Lake. In addition to the lake basin at both ends of the area is not large lacustrine - alluvial plain, surrounded by limestone, glutenite, basalt fault block surrounded by mountains. The steep lakeshore, sparse vegetation, under the conditions of warm and humid climate, the development of a few dozen meters thick loose weathering crust, provides a rich lake of sediment debris. Intermittent stream lakeshore stream short stream acute, annual rainy season, torrential rains carry a lot of gravel, sediment poured into the lake filling the lake basin.