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近十几年，由于黄河上中游自然条件及水利工程等因素的影响，黄河下游的水沙条件有较大的变化，年径流量及年输沙量均大幅度减少，使得河南河段河道主槽严重淤积；河道的断面形态发生了很大变化，“二级悬河”不断加剧，而且在东坝头以上河段迅速延伸；漫滩流量不断减小；同流量沿程水位不断抬升；漫滩几率和范围不断增大；河道排洪能力不断减小。因此，当前河南黄河的防洪形势不容乐观，河防部门应对防汛出现的新情况、新问题引起高度重视。
In recent decades, due to the natural conditions of the upper and middle reaches of the Yellow River and water conservancy projects, the water and sediment conditions in the lower reaches of the Yellow River have undergone major changes, with annual runoff and annual sediment discharge greatly reduced, making the river main Trough serious siltation; river section morphology has undergone great changes, “two suspended river” is aggravating, but also in the east dam above the rapid extension; floodplain flow is decreasing; with the flow along the water level rising; diffuse The probability and scope of the beach are constantly increasing; Therefore, the current situation of flood control in the Yellow River in Henan is not optimistic. The river defense department should attach great importance to the new situation and new problems in flood control.