Why do the Yangtze River and Yellow River water flow into the sea in vain, but not stored in the Yangtze River and Yellow River basins?

The annual runoff of the Yangtze River is more than 960 billion cubic meters, and the annual runoff of the Yellow River is about 57.4 billion. So much water flows into the sea for nothing. Why can't it be stored to solve the urgent need?

As far as the Yellow River is concerned, we have basically realized the regulation and storage, and we can regulate and store it at will. Longyangxia Reservoir in the upper reaches of the Yellow River has an average annual runoff of 20 billion, but its storage capacity reaches 25 billion, which means that all the runoff of this section of the Yellow River can be put into the reservoir, and not a drop can flow out. It is precisely because of the existence of reservoirs in the upper reaches of the Yellow River that Ningxia, the world's Huang Hefu, appeared. Without the flood disaster, the agricultural production here has achieved a bumper harvest, and the western cities of Yinchuan and Baotou are full of vitality.

There is also a Wanjiazhai Reservoir in the middle reaches of the Yellow River, which stores the Yellow River water flowing out of the Hetao Plain, leads it to Sanggan River through Wanjiazhai, enters Guanting Reservoir in the north of Beijing, and then replenishes Yongding River to replenish water for Beijing's ecology.

We also take water from Puyang, Henan Province in the lower reaches of the Yellow River, and draw water from the Yellow River to Baiyangdian Lake, taking more than 654.38 billion cubic meters of water every year. Where is Baiyangdian? That place is the location of Xiong 'an, which is being designed and planned by the Millennium country. It is a new city built to solve the diversion of overpopulation and environmental pollution in Beijing. Through this water diversion project, it not only meets the water demand of Xiong 'an city, but also realizes the regulation and storage of the Yellow River water.

At present, the annual runoff of the whole Yellow River basin is stored in the reservoirs through Longyangxia, Liujiaxia and Lijiaxia reservoirs in the upstream, Wanjiazhai Reservoir in the middle, Sanmenxia Reservoir and Xiaolangdi Reservoir in the downstream, and there is no drop of water in the Yellow River estuary. The 5,000-year flood control of the Yellow River was really eradicated shortly after the founding of New China.

At present, every drop of water in the Yellow River has its use value and is well stored. The water in the Yellow River estuary is artificially used to adjust water and sediment, maintain the continuous flow of the Yellow River, replenish the water in the downstream ecology, and "squeeze every drop of the Yellow River". This is the current situation of water use in the Yellow River.

The Yellow River has reached its limit. What about the Yangtze River? The Yangtze River does not "do whatever it wants" like the Yellow River. A friend said that we have the Three Gorges Reservoir. The runoff of the Three Gorges dam site is more than 460 billion, which is close to half of that of the Yangtze River. The storage capacity of the Yangtze River is 39.3 billion cubic meters, with a storage capacity of about113. Its regulation ability is not very strong, far less than Longyangxia Reservoir in the upper reaches of the Yellow River.

The South-to-North Water Transfer Project transfers water from the Hanjiang River, a tributary of the Yangtze River, with 5 billion cubic meters per year, of which 9.3 billion cubic meters of saturated water flows to the Weihe River to solve the water consumption of cities in Guanzhong Plain, that is, 2 billion to 3 billion cubic meters. The sum of the two is 654.38+0 billion cubic meters.

The East Route of South-to-North Water Transfer Project draws more than 3 billion Yangtze River water every year.

Hydropower stations in the upper reaches of the Yangtze River also have great storage capacity. At present, the total storage capacity of the planned reservoir accounts for 6 1% of the annual runoff (460 billion at the Three Gorges dam site) and the storage capacity is 280 billion (including the Three Gorges Reservoir).

Due to the influence of topography, the middle and lower reaches of the Yangtze River lack good reservoir site selection conditions, so it is impossible to build reservoirs on the main stream to store water. Even if there is no subsequent development in the future. Every year, most of the flood peaks of the Yangtze River 1 appear in Dongting Lake and Poyang Lake systems. So much water not only flows into the sea in vain, but also brings floods to cities on both sides of the downstream.

Roughly speaking, the storage capacity of the Yangtze River is 2800+ 130 (South-to-North Water Transfer Project) = 293 billion cubic meters, which is close to 1/3 of the total runoff of the Yangtze River. About two-thirds of the water flows into the sea in vain. The main problem at present is how to store the water in the middle and lower reaches of the Yangtze River.

The Yangtze River is the fourth largest river in the world, but it is better for us to be afraid of some. After all, this is a flow of more than 960 billion, and it cannot be swallowed at one gulp to achieve arbitrary regulation. This is good, and it can also retain the basic attributes of rivers, which plays an important role in maintaining the ecological balance of the Yangtze River basin.

The Yangtze River and the Yellow River are two rivers with a long history that maintain Chinese civilization. How to solve the relationship between rivers and human development is a major issue. Simply emphasizing the storage capacity will inevitably do harm to the ecological environment of downstream cities. Only by giving consideration to the relationship between the two can the river ecology develop in a good direction.

It's interesting that you ask this question. It turns out that many lakes and marshes in the middle and lower reaches of the Yangtze River are all water. Now that land is so precious and housing prices are so high, real estate can create the highest value. It is the biggest waste and crime to exchange so much land for water. Only by filling the lake to build houses and discharging water into the sea as much as possible can the maximum land value be squeezed out.

The water vapor produced by flowing into the sea gathers into clouds, falls on the earth and flows into rivers. Thank nature! !

Even if the rivers in nature are stored, they can only be temporary. Although it is only the simplest phenomenon in nature, it is definitely one of the basic phenomena that cannot be artificially changed. In addition, the water quantity of the Yangtze River and the Yellow River in China is completely different.

First of all, look at the Yangtze River, which is rich in water resources. In fact, it has been stored in a large area. The Three Gorges Reservoir is a typical example. Before there was no Three Gorges reservoir area, it was just a natural river. At present, the Three Gorges reservoir area is 600 kilometers long and 2 kilometers wide, with a total area of 65438+100000 square kilometers. The deepest part is more than 300 meters, and the average water depth is 100 m-10 m.

Look at the Yellow River again. The water quantity of the Yellow River is completely different from that of the Yangtze River. The main stream itself has a relatively small amount of water, and the tributaries along the way have little supply. In addition, the river sediment concentration is extremely high, so the amount of water discharged into the sea by the Yellow River is relatively low every year. In addition, in recent years, the rainfall in the Yellow River basin is less, and the Yellow River channel has dried up and cut off in a large area. In this case, water storage is generally only in the upstream, and the normal runoff in many places downstream has disappeared.

In addition, both the Yangtze River and the Yellow River actually contain a lot of sediment, but the Yangtze River is not so obvious. Water storage in rivers is not as simple as water tanks at home. Every time a river is intercepted and stored for a period of time, it will produce a lot of sediment at the bottom of the river. If it is not discharged in time, it will cause large-scale siltation. Dongting Lake is actually a living case, so artificial water storage is only temporary.

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The water of the Yangtze River, the water of the Yellow River, runs as far as the eye can see, day and night, and flows eastward into the sea. Life is endless and inexhaustible. Why are there so many waters in the Yangtze River, Yellow River and rivers? Did water fall from the sky? Not to mention, water really fell from the sky. At the source of the river, there are snow-capped mountains that melt ice, which is a minority. It is mostly rain and snow along the way, and a small amount of mountain spring water flows into the Yangtze River and the Yellow River through tributaries. The land flowing through the Yangtze River and the Yellow River moistened the plains and irrigated mulberry fields, which made great contributions to the formation of Chinese civilization. When the water is full, it will overflow, and if there is too much water, it will also cause floods. In order to control the flood, we have built many large and small dam power stations on the river in China. The Three Gorges Dam ranks first in the world, the Xiaolangdi is spectacular, and everything else is famous. I won't go into details here. Why do rivers and water flow into the sea in vain instead of being stored in river basins? We built dams and power stations, and they were stored. If we store enough water, the extra water will be useless. I wonder why water flows into the sea. Excess water needs a place to flow, not into the sea, can it flow into my house? Haha, you're kidding me at last!

Why do the Yangtze River and Yellow River water flow into the sea in vain, but not stored in the Yangtze River and Yellow River basins? What a precious resource water is, just like money, who doesn't want to save it and use it slowly, but it's easier said than done!

The Yangtze River and the Yellow River are the two largest rivers in China, with annual runoff reaching more than 960 billion cubic meters and 57.4 billion cubic meters respectively. So much water flows to the sea in vain, which sounds wasteful, but it is difficult to save it all!

First of all, the annual net flow of the Yellow River is only one twentieth of that of the Yangtze River. Theoretically, it is much easier to store all the water in the Yellow River, and China has indeed done a good job in this respect. The dam site of Longyangxia Reservoir in the upper reaches of the Yellow River has an annual runoff of 20 billion cubic meters and a storage capacity of 25 billion cubic meters. Theoretically, this reservoir can control all the incoming water in the upstream and use it as it pleases. It is precisely because of its existence that it has the reputation of Ningxia Saibei Jiangnan!

Let's talk about the Yangtze river The annual runoff of the Yangtze River has reached more than 960 billion cubic meters. At present, the reservoirs or lakes that can regulate the water volume of the Yangtze River are mainly the Three Gorges Dam in the upper reaches, Dongting Lake and Poyang Lake in the middle and lower reaches. The annual runoff of the upper reaches of the Three Gorges Dam is about 460 billion cubic meters, which is close to half of the annual runoff of the Yangtze River. The water storage capacity of the Three Gorges Reservoir is only 39.3 billion cubic meters, accounting for only one thirteenth of the upstream inflow, far less than that of Longyangxia Reservoir in the upper reaches of the Yellow River.

Dongting Lake and Poyang Lake in the middle and lower reaches of the Yangtze River are natural lakes. Although they have strong water storage capacity, human control ability is limited and they cannot completely control the water quantity. Roughly speaking, at present, the artificial controllable storage capacity of the Yangtze River does not exceed 300 billion cubic meters, which is less than 1/3 of the total runoff of the Yangtze River, and about two-thirds of the water flows into the sea in vain.

Of course, even if we build more dams to completely control the flow of the Yangtze River and the Yellow River, it is theoretically difficult to realize the utilization of all water resources. Because reservoirs and lakes have many functions, such as prevention, drought resistance, navigation and sediment regulation, it is impossible to ignore other functions such as flood control, navigation and sediment regulation in order to store water resources. For the simplest example, the weather forecast suggests that there will be a continuous heavy rainfall in the upper reaches of the Yangtze River in the future, and the inflow will exceed the storage capacity of the Three Gorges Reservoir. Only the storage capacity can be vacated in advance to reduce the flood peak. After all, flood control is the biggest function of the Three Gorges Dam.

To sum up: it's not that I don't want to save the Yangtze River and Yellow River, but that I don't have the hardware conditions. Even if the hardware conditions are met, it is impossible to save them all!

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I'm glad to answer your question. China's terrain is high in the west and low in the east, so it all flows eastward. What you said is not accurate. Isn't there Poyang Lake and Dongting Lake in the Yangtze River Basin? Their water is a big lake where the Yangtze River and other rivers meet. Junior high school students should all know.

Honey, there is no such big storage space. This is a ... What if the water does not flow into the lower reaches of the sea? Here are two. The ecology of the downstream and river estuaries needs to be maintained, so not only can not a drop of water flow into the sea, but a certain amount of water must flow into the sea to maintain the corresponding ecological requirements. I suggest you study more to qualify your thinking.

The Yangtze River and the Yellow River have been called the "mother rivers" of China since ancient times. The Yangtze River Basin and the Yellow River Basin are the cradles of China's 5,000-year history and culture, as well as the economic, political and cultural centers of China, which play an irreplaceable role in the social development and progress of China. The Yangtze River, the Yellow River, the Pearl River, the Huaihe River, the Haihe River, the Liaohe River and the Songhua River are also called the seven major water systems in China, belonging to the Pacific water system, with a total drainage area of more than 4.3 million square kilometers and an annual water volume of 65.438+54 billion cubic meters, accounting for about 60% of the national annual water volume, and supporting more than two-thirds of the population in China.

China's total freshwater resources are 2.8 trillion cubic meters, accounting for 6% of the world's water resources, ranking fourth in the world after Brazil, Russia and Canada. China's per capita water resources are only 2,300 cubic meters, which is only 1/4 of the world average, and it is one of the poorest countries in the world. The annual runoff of the Yangtze River and the Yellow River in China is 960 billion cubic meters and 58 billion cubic meters respectively, accounting for 66. 1% of the annual runoff of the Pacific river system in China. So much water resources have flowed into the Pacific Ocean in vain, why don't we store the water resources in the Yangtze River and Yellow River basins? To alleviate the water shortage in northwest and north China? In fact, what we thought of, we thought of it long ago. Otherwise, there wouldn't be so many hydropower stations and reservoirs on the Yangtze and Yellow Rivers, and there wouldn't be so many water diversion projects. So far, we can only control and use the Yellow River easily, but it is still difficult to control the Yangtze River, which is not so smooth. Here are the water resources utilization and storage of these two rivers.

Yellow River "Can't you see how the water of the Yellow River flows out of the sky and into the ocean, never to return?" This is a poem written by Li Bai, a poet in the Tang Dynasty, which describes the quiet and peaceful scene of the ancient Yellow River estuary surrounded by green plants. The Yellow River, known as the long river, river, turbid stream and Deshui in China in ancient times, is the fifth largest river in the world, the third largest river in China and the second largest river with the largest sediment concentration in the world. It has a zigzag shape, with a total length of 5,464 kilometers, a drainage area of 750,000 square kilometers and an annual runoff of 58 billion cubic meters. The main tributaries are Fenhe River, Weihe River, Taohe River and Huangshui River. The Yellow River flows through nine provinces and regions in China, of which the upper reaches are dominated by mountains, while the middle and lower reaches are dominated by plains and hills. The main landforms are Qinghai-Tibet Plateau, Inner Mongolia Plateau and North China Plain, and finally flow into Bohai Bay through Dongying, Shandong. It originated from Zhaqu of Cha Hasila Mountain in Bayankala Mountains in the "Three Rivers Source" area of Qinghai-Tibet Plateau, Kari music at the northern foot and Yuegu Zonglie music in the west of Haixi, Su Xing. The upper reaches of the Yellow River reach Hekou Town, Inner Mongolia, the middle reaches Taohuayu, Henan, and the lower reaches reach Dongying Estuary, Shandong. Most of the Yellow River system belongs to temperate monsoon climate, with concentrated precipitation in summer and little water in winter, and it is one of the seven major water systems in the Pacific Ocean.

The annual runoff of the Yellow River is 58 billion cubic meters, but in recent years, the phenomenon of "cut off" often appears in the lower reaches of the Yellow River. It is not that there is no water in the Yellow River, but that we have stored water in the Yellow River. By the beginning of 2020, a tributary of the Yellow River will have 24 hydropower stations, 3 reservoirs and 7 water conservancy control projects. These three reservoirs include Luhun Reservoir, Guxian Reservoir and Xixiayuan Anti-regulation Reservoir. These seven water control projects include Xiaolangdi, Sanmenxia, Longkou, Wanjiazhai, three sheng, Qingtongxia and Shapotou of the Yellow River. These 24 hydropower stations include Tianqiao Hydropower Station, Wujinxia Hydropower Station, Daxia Hydropower Station, Xiao Xia Hydropower Station, Bapanxia Hydropower Station, Huang Feng Hydropower Station, Jishixia Hydropower Station, Lingbing Hydropower Station, Liujiaxia Hydropower Station, Yanguoxia Hydropower Station, Su Zhi Hydropower Station, Gongboxia Hydropower Station, Yang Kang Hydropower Station, Zhiganglaka Hydropower Station, Lijiaxia Hydropower Station, Nina Hydropower Station, Laxiwa Hydropower Station, Longyangxia Hydropower Station and Banduo Hydropower Station. Among them, there are 4 hydropower stations under construction: Ningmut Hydropower Station, Mardang Hydropower Station, Erduo Hydropower Station and Cihaxia Hydropower Station. Ten hydropower stations are planned, including Tehemu Hydropower Station, Mentong Hydropower Station, Seine River Hydropower Station and Daliushu Hydropower Station. The original Huangheyuan Hydropower Station has been demolished. These water conservancy projects undertake the tasks of power supply to the power grid and comprehensive utilization of flood control, ice prevention, irrigation and water supply.

Among more than 30 water conservancy projects in the Yellow River, the top nine are Longyangxia Hydropower Station with a storage capacity of 24.7 billion cubic meters, Sanmenxia Hydropower Station with a storage capacity of 65.438+062 billion cubic meters, Xiaolangdi Hydropower Station with a storage capacity of 65.438+026 billion cubic meters, Liujiaxia Hydropower Station with a storage capacity of 5.7 billion cubic meters and Lijiaxia Hydropower Station with a storage capacity of 65.438+065 billion cubic meters. Luhun Reservoir has a storage capacity of 65.438+0.32 billion cubic meters, Guxian Reservoir has a storage capacity of 65.438+0./kloc-0.75 billion cubic meters, and Laxiwa Hydropower Station has a storage capacity of 65.438+0.79 billion cubic meters. The total storage capacity of these nine water conservancy projects is 65.896 billion cubic meters. The storage capacity of Madang Hydropower Station under construction is 65.438+0.3 billion cubic meters, and the storage capacity of Cihaxia Hydropower Station is 46.5438+0.7 billion cubic meters. The planned storage capacity of Daliushu Hydropower Station is 1 1 100 million cubic meters. As can be seen from the data, we "conquered" the Yellow River.

The areas where the Yellow River flows are all arid and semi-arid areas, and there is a great loss of water along the way, so the largest amount of water is in the upper reaches. 49% of the total water volume of the Yellow River comes from the "Three-source Region" of the Qinghai-Tibet Plateau, that is, the upper reaches of the Yellow River account for half of the annual runoff, which is 29 billion cubic meters. Longyangxia Hydropower Station has a storage capacity of 24.7 billion cubic meters, Liujiaxia Hydropower Station has a storage capacity of 5.7 billion cubic meters, Lijiaxia Hydropower Station has a storage capacity of 65.438+0.65 billion cubic meters, and the three major hydropower stations have a storage capacity of 36.5438+0.85 billion cubic meters, which can completely store the runoff of the Yellow River for half a year. The storage capacity of Sanmenxia Water Control Project in the middle reaches is 654.38+062 billion cubic meters, and that of Xiaolangdi Water Control Project is 654.38+026 billion cubic meters. Together with the downstream Yellow River Diversion Project, the total annual water diversion is 243 million cubic meters, and the annual water diversion capacity of the Yellow River Diversion Project is 720 million cubic meters. The "Yellow River Diversion Project" in the middle reaches of the Yellow River draws 640 million cubic meters of water annually, totaling 30.403 billion cubic meters. It can also "consume" the water with an annual runoff of 29 billion cubic meters in the middle and lower reaches of the Yellow River, and completely store it without leaking a drop of water. We haven't calculated the water storage capacity of other hydropower stations and water control projects. Therefore, it can be concluded that we have completely stored the Yellow River water without wasting any water, and we have reached a "comfortable" level for the Yellow River.

The Yangtze River stretches as far as the eye can see, and leaves are falling like the spray of a waterfall. "This is a poem written by Du Pu, a poet in the Tang Dynasty, when he climbed the mountain, describing the magnificent scenery of the Yangtze River. The Yangtze River, known as Jiang and Da Jiang in ancient times, is the third longest river in the world, the third longest river in China and the first longest river in China. The Yangtze River is in the shape of "V+W", with a total length of 6,397 kilometers, a drainage area of 6,543.8+0.8 million square kilometers and an annual runoff of 960 billion cubic meters, accounting for about 36% of the national river runoff. The Yangtze River flows through 1 1 provinces and cities, and its main landforms are: Qinghai-Tibet Plateau, Hengduan Mountains, Yunnan-Guizhou Plateau, Sichuan Basin, the middle and lower reaches of the Yangtze River, Dongting Lake, Poyang Lake and southeast hills. And finally flows into the East China Sea. It originated from the winter peak of Tanggula Mountain in the "Three Rivers Source" area of the Qinghai-Tibet Plateau on the roof of the world, and its source is called Tuotuo River. There are more than 700 tributaries of the Yangtze River, including 49 tributaries such as Minjiang River, Chishui River, Tuojiang River, Jialing River, Wujiang River, Hanjiang River, Yalong River, Xiangjiang River, Yuanjiang River and Ganjiang River. The upper reaches of the Yangtze River go from the source to Yichang, Hubei, the middle from Yichang, Hubei to Hukou, Jiangxi, and the lower reaches from Hukou, Jiangxi to Shanghai. Most areas of the Yangtze River system belong to subtropical monsoon climate, with abundant precipitation, and the average precipitation for many years is about 1 100mm, with stable water volume, making it one of the seven major water systems in the Pacific Ocean.

For the Yangtze River, it is not as easy and difficult for us to control and use the stored water as the Yellow River. The Yangtze River has a drop of 6,600 meters and an annual runoff of 960 billion cubic meters, which is 17 times that of the Yellow River. 25% of the total water volume of the Yangtze River comes from the "Three Rivers Source Area" of the Qinghai-Tibet Plateau. From the source to Yibin, it is upstream. The Yangtze River is about 3,500 kilometers long with a drop of about 6,200 meters. Most of the abundant hydropower resources of the Yangtze River are distributed in this river. There are many canyons in this river, among which the most famous and steep is the Tiger Leaping Gorge, which is what I said: the Chuanjiang section from Yichang to Yibin and the Jinsha River section from Yibin to Yushu. There are 27 hydropower stations planned, under construction and completed in the main stream of the Yangtze River, including 10, 2 under construction and 15 under planning. Built hydropower stations include Liyuan Hydropower Station, Ahai Hydropower Station, Jin Qiao 'an Hydropower Station, longkaikou hydropower station Hydropower Station, Rudila Hydropower Station, Guanyinyan Hydropower Station, Three Gorges Water Control Project and Gezhouba Hydropower Station.

The water storage source of the Yangtze River is nothing more than the following aspects:

First, the Three Gorges Dam has a water storage capacity of 70.88 billion cubic meters.

The dam height of the Three Gorges Hydropower Station is185m, the normal water level is175m, and the reservoir length is 2335m, forming an artificial lake with a total area of1084km2. The maximum storage capacity of the Three Gorges Reservoir is 39.3 billion cubic meters, and the flood control capacity is 2265438+0.5 billion cubic meters. The total runoff of the Yangtze River is close to 1 trillion cubic meters, of which 70% or 80% of the water is concentrated in the rainy season, so "the flood control capacity of the Three Gorges Project is limited and it cannot cover the whole world." The maximum dam height of Gezhouba Hydropower Station is 47 meters, the crest length is 256 1 m, the total storage capacity is10.58 billion cubic meters, and the annual runoff is 4565438+0 billion cubic meters. Danjiangkou water control project has a total area of 1022.75 square kilometers and a storage capacity of nearly 30 billion cubic meters. Of course, there are hundreds of other hydropower stations and reservoirs, so we won't list them one by one.

Take the data as an example: in 20 14, there were six reservoir projects 19 8 18 in northern China, with a total storage capacity of 304.285 billion cubic meters, accounting for 20.2% and 32.6% of the national total storage capacity respectively; There are 78 184 reservoir projects in the south fourth district, with a total storage capacity of 628.027 billion cubic meters, accounting for 79.8% and 67.4% of the national reservoir quantity and total storage capacity respectively. There are 98,000 reservoirs in China with a storage capacity of 93.23438+0.2 billion cubic meters. In other words, the total storage capacity of the national reservoirs is not less than the annual runoff and water volume of the Yangtze River in one year, which is still a little less. What's more, there is only one Three Gorges Dam, one Danjiangkou Reservoir and hundreds of hydropower stations.

2. The water storage capacity of the South-to-North Water Transfer Project is 44.8 billion cubic meters.

The South-to-North Water Transfer Project aims to solve the water shortage problem in North China and Northwest China and alleviate the drought. China's "South-to-North Water Diversion Project" is divided into three sections: East, Middle and West. It is estimated that the total water transfer will be 44.8 billion cubic meters, benefiting 435 million people. Among them, the eastern route is 65.438+0.48 billion cubic meters, the central route is 65.438+0.3 billion cubic meters, and the western route is 65.438+0.7 billion cubic meters.

3. The water storage capacity of Poyang Lake and Dongting Lake is 45.4 billion cubic meters.

The five major freshwater lakes in China are basically distributed in the Yangtze River basin, while Poyang Lake and Dongting Lake are natural water storage "containers". Poyang Lake covers an area of 4 1.25 square kilometers and has a water storage capacity of 27.6 billion cubic meters. Dongting Lake covers an area of 2,789 square kilometers, with a water storage capacity of 654.38+07.8 billion cubic meters and a total water storage capacity of 45.4 billion cubic meters, but it is still a drop in the bucket.

Four, other aspects of water storage

Other aspects: such as domestic water, industrial water, farmland irrigation, water evaporation, etc.

In other words, the total amount of water we can store in the Yangtze River is: the storage capacity of the Three Gorges Dam+the storage capacity of the South-to-North Water Diversion Project+the storage capacity of Poyang Lake and Dongting Lake+the storage capacity of other areas is equal to 70.88 billion cubic meters+44.8 billion cubic meters+45.4 billion cubic meters+others =16/kloc-0.08 billion cubic meters+the runoff in other years is equal to about one third of the Yangtze River = We can't count the storage capacity of hundreds of hydropower stations in the Yangtze River plus the water consumption of coastal residents. The data is so complicated that we can only estimate a figure roughly. The above is just to show that we can't easily control the Yangtze River, and now we can only develop and utilize a small part of it. With the improvement of human science and technology, our development and utilization of the Yangtze River will become more and more relaxed, and other things can only be proved by time.

The laws of nature are immutable and irresistible. In the early days of liberation, China carried out large-scale regulation and management of the Yangtze River and the Yellow River, and gained great benefits. In recent years, the Three Gorges Dam is an example. If you want to change the laws of nature, it's daydreaming. If you say that the sun will never set tomorrow morning, this is the reality.