京杭运河苏北段南起扬州六圩口，北至徐州蔺家坝，全长 404公里，通过国家两次大规模整治，渠化成 10个梯级，整治成二级航道，每个梯级都建有复线船闸 (解台复线船闸在建 )，最大水位总落差达 33． 1米，已通航的 19座船闸年通过量 1999年已达 67561万吨，部分繁忙双线船闸 The north section of the Beijing-Hangzhou Grand Canal runs six levees from the Yangzhou to the south and to Linjiaba in the north to Xuzhou. It has a total length of 404 kilometers. Through two large-scale national remediation projects, the canal has become 10 steps and rectified into two courses. Each step is built Double-line shiplock (Xie Taiwan double-line ship lock under construction), the maximum drop of 33 total water level. 1 meter, 19 shiplocks that have been navigable The annual throughput in 1999 reached 675.61 million tons, part of the busy two-lane ship lock