Jialing river, A tributary of the Yangtze River is the important sea route of Sichuan province. The Jialing River's most notable characteristic is its rapid flood and drop. One cargo vessel in Jialing river loaded with 1500 tonnes beans run aground near Jiangbei wharf after a rapid drop down of water level. Half of vessel rested on a bank slope , its bow was 3 meters higher from the ground. The distance of aground vessel to the nearby bridge pier is less than 100 meters.