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How big is the submerged area of Heishanxia Reservoir?
The river reaches include Jingyuan Yellow River Basin, Hongshan Gorge, Jingtai Wufo Basin Gorge and Heishan Gorge in Baiyin City, Gansu Province, and the river valley length is close to 140 km. According to the surface water resources in Gansu Province, the annual runoff of Heishan Gorge is 33.8 billion cubic meters, with the maximum runoff of 52.9 billion cubic meters and the minimum annual runoff of 22.3 billion cubic meters.
Natural conditions:
The Heishanxia reach of the Yellow River spans Jingyuan County of Gansu Province, Jingtai County and Zhongwei County of Ningxia Hui Autonomous Region, with a total length of about 200 kilometers, including Jingyuan River, Hongshan Gorge, Wufochuan River and Heishanxia, with a natural drop of 1.39 meters. It is an ideal reach for hydropower project development and the last undeveloped reach of the whole Yellow River Basin.
Heishanxia reach of the Yellow River is located at the junction of Gansu and Ningxia, and it is the last canyon reach in the upper reaches of the Yellow River where Gaoba Reservoir can be built. The reach is located at the junction of the first and second steps in China, with more water and less sand, and the advantages of high-level water supply are obvious. It plays a strategic role in the regulation of water, sediment and electricity in the Yellow River and is a valuable resource for the effective allocation of water resources in time and space.
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