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子牙河流域位于海河流域南系的大清河与漳卫南运河之间,由滹沱河和滏阳河两大支流组成,在献县会合后称子牙河。子牙河流经河间、大城等县至静海第六埠与大清河会合后称西河,至天津大红桥与北运河汇合后称海河。在行政区划上隶属山西、河北和天津两省一市。干流自献县臧家桥至第六埠长166公里,流域面积46868平方公里,其中66.8％为山区。流域内有人口1500余万,耕地约2600万亩。1963
Ziya River Basin is located in the south of the Haihe River between the Daqing River and Zhangweinan Canal, composed of Hutuo River and Suiyang River two major tributaries, in Xianxian meet after the Ziya River. Ziya River flows through the Hejian, Ayutthaya and other counties to the Jinghai sixth port and the convergence of the Qinghe River, said after the West River to Tianjin Honghe and the confluence of the North Canal after the Haihe. In the administrative division under the Shanxi, Hebei and Tianjin provinces and cities. The Zangjiaqiao in the mainstream of the main stream is 166 kilometers long and the sixth port is 166 kilometers long. The drainage area is 46,868 square kilometers, of which 66.8% is mountainous. The basin has a population of more than 15 million, about 2600 acres of arable land. 1963