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截至1999年12月22日,黄河上游内蒙古河段累计封河长度达530km,封冻上首位于三盛公枢纽闸上5km 处。黄河下游山东河段共封冻36段,封冻长度81.1km,封冻上首位于齐河程官庄险工24号坝。封河过程中均未出现灾害。因受较强冷空气的影响,黄河内蒙古河段三湖河口、头道拐水文站11月26日开始流凌,流凌密度分别为20%和10%。12月6日以后,
As of December 22, 1999, the cumulative length of the closure river in the upper reach of the Yellow River in Inner Mongolia reached 530km, and the top of the seal was located 5km above the Shengshenggong Junction Gate. Shandong section of the lower reaches of the Yellow River, a total of 36 sections frozen, sealing length of 81.1km, frozen on the first in Qihe Chengguan dangerous work on the 24th dam. No closure of the river during the disaster. Due to the strong cold air, the flow of Lingling started at Linghuaihu Hydrological Station on the mouth of the Three Lakes in Inner Mongolia at the Yellow River, and flowed at a flow density of 20% and 10% respectively on November 26. After December 6,