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黄河平均每年有11亿吨泥沙进入河口尾闾地区。部分堆积在河口填海造陆,部分堆积在三角洲上,部分带入到深海区。在自然情况下,河口尾闾是堆积、延伸、改道摆动往复循环的运动。六十年代以前,宁海以下无大堤,尾闾改道摆动以宁海为顶点,改道摆动的范围较大,南至支脉沟口,北至套尔河口。自六十年代以来,河口地区发现和开发了胜利油田,不允许尾闾自然改道。而且油田
On average, the Yellow River has 1.1 billion tons of silt entering the mouth of the estuary every year. Part of the accumulation of land reclamation in estuaries, part of the accumulation in the delta, some into the deep sea. Under natural conditions, the tail of the mouth of the estuary is the movement of stacking, extending, diverting and reciprocating cycles. Before the 1960s, there was no embankment below Ninghai, but the tailwave diverted to Ninghai as its apex, with a larger range of diversion and swing to the south, branches to the mouth of the vein and north to the mouth of the Bayou. Since the 1960s, the Shengli Oilfield was discovered and developed in the estuary area, and the tailings were not allowed to divert naturally. And oil fields