江苏境内的江北运河 ,为南北水上交通枢纽 ,又兼有排洪灌溉义务 ,因黄、淮水患的影响 ,民国时期江北运河的河防整治成为极大的问题。抗战前担任江苏建设厅长的水利专家沈百先说 :江北运河“为淮沂泗诸大川流排洪之关键” ,而“黄淮运河 ,交互错综 ,河防交通 ,更须兼筹防灾 ,非? The Jiangbei Canal in Jiangsu Province is the hub of water traffic between the South and the North. It also has the obligation of flood control and irrigation. Due to the influence of Huang and Huai rivers, the river defense of the Jiangbei Canal during the Republic of China became a great problem. Shen Baixian, a water conservancy expert who served as director of the Jiangsu construction before the war of resistance against Japan, said: The Jiangbei Canal “is the key to draining floods from the Zhuchuan River in the Huaiyi Simao River.” "The Huang-Huai Canal,