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自1961年盐锅峡水库蓄水发电后至1986年龙羊峡水库蓄水发电前25年内,黄河上游(河口镇以上河段)共建成刘家峡、盐锅峡、八盘峡、青铜峡、三盛公等五座电站(枢纽)程.其中刘家峡水库是不完全年调节水库,由于库容大,拦截了干流及洮河大量泥沙又由于水库调节了洪水,黄河的径流进行了年内重新分配,使下游的来水来沙条件及河流的边界条件发生了改变,由此处于这些枢纽的下游河道,将作出相应的调整,发生冲淤变化.
Since 1961, Yanghuxia reservoir storage power generation to 1986 Longyangxia Reservoir 25 years before the impoundment of electricity, the upper reaches of the Yellow River (above the mouth of the river mouth) built Liujiaxia, salt pot Gap, Bapanxia, Qingtongxia, three Shengli etc. Among them, Liujiaxia Reservoir is an incomplete year regulating reservoir. Due to the large reservoir capacity, a large amount of sediment was intercepted in the main stream and the Bahe River. Due to the flood regulation by the reservoir, the runoff of the Yellow River was redistributed within the year, As a result, the incoming water and sediment conditions at the lower reaches and the boundary conditions of the rivers have changed. As a result, the lower reaches of these hinterlands will be adjusted accordingly and the erosion and siltation will change.