Xi River

The Xi River (西江, Xī Jiāng), also known as the West River, is the western tributary of the Pearl River system in southern China. It is the principal watercourse in the Pearl River Basin and, by some measurements (including drainage area), is considered the main stem of the Pearl River.

The Xi River originates in the Wumeng Mountains of Yunnan Province and flows generally southeastward through Guizhou, Guangxi, and Guangdong provinces before converging with the Bei River (North River) and Dong River (East River) to form the Pearl River Delta. It empties into the South China Sea via the Pearl River estuary.

The river is significant for its length, volume of water, and its role in navigation, irrigation, and hydroelectric power generation. It is a vital transportation route for goods between inland areas and the coastal regions. Major cities situated along the Xi River include Wuzhou, Zhaoqing, and Jiangmen. The river and its tributaries are also important for agriculture, supporting rice cultivation and other crops.

The Xi River basin is characterized by a subtropical climate, with abundant rainfall that contributes to the river's large discharge. The river is subject to seasonal flooding, particularly during the monsoon season. Efforts are continuously made to manage flood control and improve water quality within the Xi River basin.