黄河尾闾,来水多沙,淤积延伸迅速,摆动改道频繁.现河口是1855年铜瓦厢决口改道后的河口,至今已125年,除决口年份外实际走河只有90年.此期间河口改道10次,平均约九年一次,造陆3,000多平方公里.每年来至河口区泥沙,约有三分之一为海流带走,其余则堆积滨海造陆.此即三角州沙咀不断外伸,入海流路经常摆动的原因.解放后,在党和政府的治理下,河口地区 Yellow River tail, water and more sand, sedimentation extension of the rapid extension, swinging diversions are frequent now estuary is copper mouth in 1855 after the diversion estuary estuary, has been 125 years, except the year of the verdict of the actual outside the river only 90 years during this period estuary Diversion of 10 times, an average of about nine years, making land more than 3,000 square kilometers .Every year to the mouth of the estuary sediment, about one-third of the sea to take away the rest of the accumulation of coastal land. Stretching, into the sea often swing the reasons for the channel after the liberation, under the governance of the party and government, the estuary area