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北京京杭大运河北京段通常称为北运河,主要位于今北京市通州区北关闸以南,北运河上游为温榆河和潮白河。现存的京杭大运河北京段主要是元、明、清时期开凿、疏浚的。元代至元十六年(1279)开凿坝河,因其沿线有七座坝而得名,是大都至通州的北线运河。坝河西起大都光熙门(今北京东直门北面),向东到通州城北,接温榆河。河道长约20多公里,地势西高东低,差距20米左右。河道比降较大,建有七座闸坝,
Beijing Beijing-Hangzhou Grand Canal, Beijing section is often referred to as the North Canal, mainly located in Beijing Tongzhou District Beiguan barrier south of the upper reaches of the North Canal, Wenyu River and Chaobai River. The existing Beijing-Hangzhou Grand Canal Beijing section is mainly yuan, Ming and Qing dug, dredging. Yuan dynasty to Yuan sixteen years (1279) excavation of dam river, because of its seven dams along the name, is mostly north of Tongzhou canal. Bahe west most of the light Hee Gate (now Beijing Dongzhimen north), east to Tongzhou north, then Wenyu River. About 20 km long river, the terrain west east low, about 20 meters gap. Larger than the river, built seven sluices,