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北江是广东省内第二大河流,流域面积46,292平方公里,年平均迳流410亿立方米,下游进入宽广的珠江三角洲平原,与西江、流溪河相互沟通,形成纵横交错的河网区.北江干流自思贤(?)至紫洞口共长28.5公里称为东平水道,是广西经西江通往广州的主干航线,年平均流量1,240米~3/秒;年平均输沙量761.8万吨;平均含沙量0.201公斤/米~3.全程呈一单向微弯而较为顺直的河段,河床宽阔,洪水最大河宽达1,650米,因位于三角洲顶
The Beijiang River is the second largest river in Guangdong Province. The basin covers an area of 46,292 square kilometers with an average annual flow of 41 billion cubic meters. The downstream reaches the broad Pearl River Delta plain and communicates with the Xijiang River and Liuxi River to form a river network with criss-crossing. The main stream of the Beijiang River, from Sisian (?) To the Purple Cave, a total length of 28.5 kilometers, is called Dongping Waterway. It is the main route from Guangxi to the Xijiang River leading to Guangzhou with an average annual flow of 1,240 m 3 / s. The average annual sediment discharge is 7.618 million tons. The average sediment concentration of 0.201 kg / m ~ 3. The whole course of a one-way slightly curved and more straight section of the riverbed, the largest river width of 1,650 meters wide, due to the top of the delta