The lake has a total area of about 77.22 square kilometres (29.81 sq mi).

[citation needed] Chenghai Lake is known to have significant yeast biodiversity; a study collected and identified 64 yeast strains, in 22 species across 8 genera.

[3] The lake is a closed ecosystem, and is mesotrophic, meaning it supports an intermediate level of biological productivity.

[1][4] Aquatic vegetation in the lake has declined, probably due to pollution, habitat destruction, eutrophication, and effects of grass carp stocks.

[6] This article related to a lake in China is a stub.