Lake Huangqi

Lake Huangqi, also known by its Chinese name as the Huangqi Hai, is a lake in Chahar Right Front Banner, Ulanqab Prefecture, Inner Mongolia, China.

Name
The present name dates to the Qing, when it was named after one of the Eight Banners.

Geography
Lake Huangqi is a lake in Chahar Right Front Banner, Ulanqab Prefecture, Inner Mongolia, China. It forms an irregular inverted triangle of about 110 - 113 km2, with an east–west distance of about 20 km and a north–south distance of about 9 km. Having an average depth of 4 - 10 m and a maximal depth of 35 m, it holds 460 - 500 e6m3 of water.

History
Under the Qin, Huangqi and Dai lakes formed the northern boundaries of Yanmen Commandery, marking part of the northern frontier of the Chinese empire.