Chu River () is the second largest river in Ningxiang and one of the largest tributaries of the Wei River. It originates in Longtian Town, is long, and has a valley area of .
Chu River's main tributaries include the Caochong River () and Yanghua River (). The river passes Qingshanqiao, Liushahe, Laoliangcang, and Hengshi, and empties into the Wei River in Hengshi.