The Xiang River is the chief river of the Lake Dongting drainage system of the middle Yangtze, the largest river in Hunan Province, China. It is the second-largest tributary in terms of surface runoff, the fifth-largest tributary by drainage area of the Yangtze tributaries. The river flows generally northeast through the provinces of Guangxi and Hunan, its tributaries reaching into Jiangxi and Guangdong.

Dongting Lake is a large, shallow lake in northeastern Hunan Province, China. It is a flood basin of the Yangtze River, so its volume depends on the season. The provinces of Hubei and Hunan are named after their location relative to the lake: Hubei means "North of the Lake" and Hunan, "South of the Lake".