受近日中等强度冷空气影响,12月15日9时,头道拐水文站断面以上4km处出现封河,封河日期较常年偏晚13天,封河长度6km。这标志着黄河已进入2015~2016年度封河期。据水文部门预测,12月13~15日,黄河内蒙古沿黄地区日均气温下降4~7℃,12月15日呼和浩特市最低气温达-17℃。受此影响,内蒙古河段出现封河。内蒙古河 Affected by the recent cold weather with moderate intensity, at 9:00 on December 15, the closure of the dam at 4km above the section of Hydropower Station at Shuntuai took place. The closure date was 13 days later than normal and the closure river was 6km long. This marks the Yellow River has entered the 2015 to 2016 closure period. According to the prediction of the hydrological department, from December 13 to December 15, the average daily temperature of the Yellow River in the Yellow River in Inner Mongolia dropped by 4 ~ 7 ℃, and on December 15, the lowest temperature in Hohhot reached -17 ℃. Affected by this, the closure of Inner Mongolia River closure river. Inner Mongolia River