7月31日，工作人员在郑州黄河花园口段进行水文监测。在黄河中游近日出现第1号和2号洪峰之后，位于郑州的黄河花园口水文站通过监测船加强对黄河花园口段的水文监测，及时为黄河防汛提供重要水文数据。新华社记者 赵鹏 摄     July 31,，Workers in zhengzhou HuaYuanKou Yellow River sections hydrology monitoring。In the middle Yellow River recently appeared no. 1 and no. 2 after the flood peak，The Yellow River is located in zhengzhou HuaYuanKou hydrological station through the JianCeChuan to strengthen the Yellow River HuaYuanKou segment of the hydrological monitoring，In time for the Yellow River flood control and provide important hydrographic data。The xinhua news agency ZhaoPeng perturbation

7月31日，一艘水文监测船在黄河花园口段进行水文监测。新华社记者 赵鹏 摄 July 31,，A ship in the Yellow River HuaYuanKou hydrological JianCeChuan sections hydrology monitoring。The xinhua news agency ZhaoPeng perturbation

7月31日，工作人员在郑州黄河花园口段进行水文监测。新华社记者 赵鹏 摄 July 31,，Workers in zhengzhou HuaYuanKou Yellow River sections hydrology monitoring。The xinhua news agency ZhaoPeng perturbation