Flood Control Advantages of Three Gorges Dam
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Flood Control Advantages of Three Gorges Dam

Three Gorges Dam

Flood control is the primary aim of Three Gorges Dam. With the completion of this project, the flood control advantages of Three Gorges Dam become more obvious. From the several floods in history, we can see that the effects of these floods on downstream of the Yangtze River will be how serious if there is no Three Gorges Dam.

Flood Control Advantages of Three Gorges Dam – Main Function of Three Gorges dam

In history, the basic reason of the flood in the middle and downstream of the Yangtze River is that there is no place with enough volume to adjust and block flood, and the vent capacity of the waterway is not efficiency. When the flood amount surpassed the safe discharge amount, there would appear flood disaster. Therefore, the Three Gorges Dam which is located on the middle stream of the Yangtze River will be useful.

The Three Gorges Dam is located in the middle stream of the Yangtze River; with good geography location. It can effectively control the flood in the upstream of the Yangtze River. The flood control capacity of the Three Gorges Dam reached 22.15 billion cubic meters. It can effectively block the flood which comes from upside of Yichang, powerfully decrease the flood amount, make the flood control capacity of the Jinjiang River increase to 100-year flood from 10-year flood. It improves the safe of Jinjiang River, and increases the flood control flexibility of Wuhan Municipality.

Flood Control Advantages of Three Gorges Dam – Flood Control Function

The Jinjiang River is the steepest part along the ten thousands meters long Yangtze River. In the description about the flood control advantages of Three Gorges Dam, the Three Gorges Company said that with the adjustment of Three Gorges Dam, it can control the flow rate at Zhicheng less than 56700 cubic meters per second, and the water level in Shashi less than 44.5 meters, without the help of Jinjiang River flood diversion area and other flood diversion areas.

Based on estimate, the highest water level in July 24th is about 42.6 meters, which less than 44.5 meters. If only the largest flow rate less than 56700 cubic meters per second, the safe of the downstream of the Yangtze River can be guaranteed. From 145 meters to 175 meters, there is 22.15 billion cubic meters flood control capacity. We can image the effect of floods in recent years will be how serious without the help of Three Gorges Dam.

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