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北运河是海河北系的一条重要河流,发源于北京市境内的燕山南麓,自西北向东南流经昌平、顺义、朝阳、通州4个区,出境经河北至天津入海河。干流在北京市境内长89.4 km,流域面积4423 km。。市界内流域大小支流30余条,是北京市的主要排水河道。新中国成立后,加强了对北运河水系的治理,并于1973年成立北京市北运河管理处,主要负责主河道包括温
The North Canal is an important river in the North China Sea. It originates from the south foot of Yanshan Mountain in Beijing. It flows through 4 districts of Changping, Shunyi, Chaoyang and Tongzhou from the northwest to the southeast. It departs from Hebei to Tianjin into the Haihe River. The main stream is 89.4 km long in Beijing and 4423 km in the drainage area. . More than 30 branches and tributaries in the urban area are the main drainage channels in Beijing. After the founding of New China, it strengthened the management of the water system of the North Canal and established Beijing Beiyunhe Management Office in 1973, which is mainly responsible for the main watercourse including Wen