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黄河发源于青海省的巴颜喀拉山北麓,正源为卡日曲。流经青、川、甘、宁、蒙、陕、晋、豫、鲁等九省(区),于山东垦利汇入渤海。全长5464公里,流域面积75.24万平方公里,为我国第二条大河。通常将全河分为三段,即河源至内蒙的河口镇为上游段;河口镇至花园口为中游段;花园口以下至入海口为下游段。黄河干流龙羊峡至青铜峡河段(以下简称龙～青段)为黄河上游的中下段。本河段先后通过青、甘、宁三省(区),全长918公里,区间流域面域14.36万平方公里,分别占全河的16.8％和19.09％若包括龙羊峡水库则全长为1023公里,占全河长的18.7％。由于本河段水电梯级开发的
The Yellow River originates in the northern foot of Bayanhar Mountains in Qinghai Province. Flows through nine provinces (autonomous regions) including Qinghai, Sichuan, Gansu, Ningxia, Mongolia, Shaanxi, Shanxi, Henan and Shandong, and flows into Bohai in Kenli, Shandong. A total length of 5464 kilometers, the basin area of 752200 square kilometers, is the second largest river in our country. The whole river is usually divided into three sections, that is, Hekou to Inner Mongolia’s Hekou Town is the upstream section; Hekou Town to Huayuankou is the middle section; and Huayuankou to the estuary is the downstream section. The main stream of the Yellow River Longyangxia to Qingtongxia River (hereinafter referred to as Long ~ Green segment) for the upper and lower reaches of the Yellow River. This section has passed the Qinghai, Gansu and Ningxia provinces (regions), a total length of 918 kilometers, the basin area of 143,600 square kilometers, accounting for 16.8% and 19.09% of the whole river, respectively, including the Longyangxia Reservoir, the total length of 1023 Km, accounting for 18.7% of the total length of the river. Due to the development of hydropower cascade in this section