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马湖位于四川省凉山彝族自治州雷波县黄琅区境内的金沙江左岸。地理位置是东经103°47′,北纬28°23′～26′地理位置见图。实测最大水深134m,是我国已知的第三深水湖泊。东、南、西三面环山,北面由大小不等的玄武岩碎块夹泥土堆积而成的天然堆石坝。湖面南北长约5.5km,东西宽约1～2km,呈南北向宽叶状,现有湖面面积约7.32km~2,湖水清彻碧绿。据史书记载,马湖早在宋代前即已形成,如何形成的,本身就是一个科研项目。早在60年代初,中国科学院南水北调综合考察队凉山分队在《马湖考察报告》中,通过对马湖附近的地质构造和马湖的形态调查
Ma Lake is located on the left bank of the Jinsha River in the Huanglang District of Leibo County, Liangshan Yi Autonomous Prefecture, Sichuan Province. The geographical location is 103 ° 47’E and the latitude 28 ° 23’~26 ’is shown in the map. The measured maximum depth of 134m, is China’s third known deep-water lake. East, South, West surrounded by mountains on both sides, from the north of the basalt fragments of different sizes stacked earth pile of natural rockfill dam. The lake is about 5.5km long from south to north and 1 ~ 2km wide from east to west. It is broad-leaved from north to south. The existing lake area is about 7.32km ~ 2 and the lake is clear green. According to historical records, Ma Lake as early as the Song Dynasty has formed, how to form itself is a research project. As early as the early 1960s, the Liangshan detachment of the Comprehensive Investigation Team for South-to-North Water Diversion Project of the Chinese Academy of Sciences discussed the geological structure of Mahu Lake and the morphology of Mahu