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English There is also an open-access technical paper detailing the construction of the dam: Key Technologies of the Hydraulic Structures of the Three Gorges Project. There is also a multi-stream. Meanwhile, the inflow increased to 26,500 cubic meters per second from 20,500 cubic meters per second on the previous day. CHONGQING -- The water level at China's Three Gorges Dam has dropped from its record peak over the weekend, although the risk of flooding lingers as heavy rains continue. Q: How did you generate the graphs? Authorities said they are discharging floodwater at around 980 water reservoirs along the Yangtze River, while they have hesitated to release the water inside the Three Gorges Dam, despite the level reaching a two-meter excess (6.6 feet)—citing concerns about sudden flooding. Three Gorges Dam (三峡水库) The normal water level of the reservoir is 175m with a corresponding storage of 3.93 × 10 10 m 3 . Twitch: here. Where can I find out more? (It is our plan to import the data from Three Gorges Reservoir Watch eventually. With 75,000 cubic metres per second of water flowing in from the Yangtze river on Thursday, the reservoir's depths reached 165.6 metres by Friday morning, up more than 2 metres overnight and almost 20 metres higher than the official warning level. Project Force: Is India a military superpower or a Paper Tiger? The limiting level during flood season is 145m, with a flood control storage of 2.215 × 10 10 m 3 . Among those 32 main generators, 14 are installed in the north side of the dam, … There are also threads on KiwiFarms, TB2K, Free Republic, and even GLP. With 75,000 cubic metres per second of water flowing in from the Yangtze River on Thursday, the reservoir’s depth had reached 165.6 metres (543 feet) by Friday morning, up more than two metres (6.6 feet) overnight and almost 20 metres (65.6 feet) higher than the official warning level. /tgdg/ threads on 4chan's /pol/ are not for the faint of heart but harness the power of many anons (catalog link and /tgdg/ bookmarklet.) The water level in China’s massive Three Gorges Reservoir reached 147 meters on Saturday, two meters above the flood warning line. Stonehenge may have been first erected in Wales: Archaeologists, UAE royal’s investment in Israeli football club put on hold, ICC to elect new prosecutor after failing to reach consensus, India top court notice to gov’t, Twitter on social media content, ‘Mate! The GZB dam, part of the Three Gorges water-control system, is a small afterbay located 38 km downstream from the TGD, with limited storage capacity of ˘4% of the TGR’s (CTGCY2004, China Yangtze Power Co., Ltd2013). A: Yes. Threateningly high water levels caused by high inflows indicate that the dam cannot contain floodwaters, as promised. Officials expect water levels in the … “They will do everything they can to prevent the dam from overtopping,” said Desiree Tullos, a professor at Oregon State University who studies the Three Gorges project, the world’s biggest hydroelectric dam. It is downstream from Cuntan but might contribute an additional amount of during storms. Also available: raw water monitoring data. A: TomTom publishes live traffic report from Wuhan. YouTube: here. The maximum designed depth of China’s largest reservoir is 175 metres (574 feet). Previously inflow was reported once every 6 hours but since July 26 it has been reported once every 2 hours (outflow and water level updates are once an hour). The water level behind the controversial dam in central Hubei province will rise by … This phenomenon has led to the seasonal bottomlands appearing in The Three Gorges dam, which can handle inflows of about 98.8m litres a second, is already approaching its capacity. Bao Zhengfeng, a senior official at the Three Gorges Cascade Dispatch and Communication Center, told domestic media Thursday that the water level is expected to peak at 168 meters on Sunday, and added that the current inflow rate is manageable. It previously looked like this. You can download the web page captures and our gnuplot workflow here. The Three Gorges Dam located in central China's Yichang City discharged water on Monday. Three Gorges Dam, on the Yangtze River, began operations two years ago. A: We believe that July 19 08:00 (GMT+8) data point was in error (42.57m water level; all other data points for the week are ~28m) so have removed it. Yangtze River's fifth flood peak this year reached the Three Gorges Dam, with a reservoir inflow of 75,000 cubic meters per second, according to the #YangtzeRiver hydrological Network. Water inside China’s Three Gorges Dam nears maximum levels Torrential rain has water level at world’s biggest dam to record forcing authorities to increase discharge volumes. On multiple occasions inflow < outflow yet the water level is going up. Our scripts fetch the real-time water level monitoring page every 5 minutes, and update the above graphs. Water monitoring stations map (source; original size). Since the twenty-first century, especially after the operation of Three Gorges Dam in 2003, the water level of Poyang Lake was extremely low during the dry season and lake and wetland areas varied significantly [3,9–11]. Q: Are there live streams? “An overtopping dam is a worst-case scenario because it produces significant damage … and can lead to the entire thing collapsing.”. According to the Three Gorges Corporation, the water level in the reservoir reached a record high flood season level of 164.18 meters on July 19. Power generation is managed by China Yangtze Power, a listed subsidiary of China Three Gorges Corporation (CTGC)—a Central Enterprise SOE administered by SASAC. But the trend lines are potentially indicative and it is important to archive the official data for posterity. [7] The dam regulation is based mainly on the needs of flood control and hydropower generation. Q: Why is this important? Their data points have different -- once daily -- granularity, though.). With 75,000 cubic metres per second of water flowing in from the Yangtze river on Thursday, the reservoir's depths reached 165.6 metres by Friday morning, up … The inflow curve appears to be basically the measurement at Cuntan, due to the length of the reservoir, minus runoff and tributaries downriver. The dam’s maximum water level is 175 meters. Q: The numbers look suspect! We have not gotten around to it yet. We can't argue with that. A lot of silt (sediment) that is carried by the river has been trapped in the reservoir. Chenglingji should be what Dongting Lake system is dumping back into the Yangtze. Authorities raised the discharge volume to a record 48,800 cubic metres per second on Thursday to try and lower water levels, and they might have to increase it again to avoid the possibility of a dangerous overflow. Water levels closer to maximum at China dam Floods had caused nearly 180 billion yuan ($26 billion) in economic damages by last week, and 63 million people have been affected In this aerial photo released by China's Xinhua News Agency, flooding is seen in Bikou township of Longnan city in northwestern China's Gansu Province on Tuesday. This graph should represent what will eventually hit Hankou/Wuhan further downstream (if the numbers were real). Since the twenty-first century, especially after the operation of Three Gorges Dam in 2003, the water level of Poyang Lake was extremely low during the dry season and lake and wetland areas varied significantly [3,9,10,11]. Water levels at China’s giant Three Gorges Dam on the Yangtze river are inching closer to their maximum after torrential rains raised inflows to a record high, official data showed on Friday. You should also check out this short (~4.5 min) video on Cavitation & the Glen Canyon Dam, and Association of State Dam Safety Officials page on dam failures Water levels at China's Three Gorges near maximum after flooding rains The Three Gorges Dam on the Yangtze River discharges water to lower the water level in … A: Unfortunately, no as we don't have data for before July 19. The Three Gorges Dam (TGD) locates at the outlet of the upper Yangtze river, approximately 40 km upstream of the Yichang hydrological station. Some anons have been using our data set to plot predictions in this Google Sheet -- thank you! The normal water level of the reservoir is 175m with a corresponding storage of 3.93 × 1010 m3. Finally, China is at the height of the flood. We are also plotting Wulong River tributary. Ships pass the approach channel upstream of the Three Gorges Dam in Yichang, central China's Hubei Province, June 9, 2020. @public_juan's and @PavewayIV's Twitter accounts have excellent reporting. The maximum flood hits the Yangtze River now. For these reasons, and in order to produce a clear-eyed analysis of the costs and benefits of the Three Gorges Dam, we are tracking the daily Three Gorges reservoir level here. The reservoir water level data reflect both this regulation principle and the weather conditions (Figure 2). It was probably a manual data entry error. Three Gorges Dam reached a milestone this week, recording its maximum water level for the first time. The previous high level reached during the flood season since the dam became fully operational in 2012 was 163.11 meters. A: We started monitoring Yangtze River Water Resources Commission's website on Sunday, July 19. The mega-dam could produce as much as three times the hydroelectric power of China’s current largest dam, the Three Gorges, a project which forced the relocation of … Q: Why did the Wuhan/Hankou graph change? The limiting level during flood season is 145m, with a flood control storage of 2.215 × 1010 m3. The Three Gorges Dam will become much less spectacular, because the water level will rise up to 300 feet (91 m) in places, reducing the depth of the canyons. The floods so far are only an overture. Rainfall in the Yangtze basin has been well over double the seasonal average this year. No Google?’ Australia faces life without key search engine. The … The Three Gorges, completed in 2012, was designed not only to generate power but also to reduce the risk of flooding from the Yangtze, the cause of many devastating floods throughout China’s history. Q: Why is inflow shown as separate points? Up to last week, 63 million people had been affected by flooding, which had caused nearly 180 billion yuan ($26bn) in economic damage. Q: Are there data streams from Hankou/Wuhan, which is downstream of the dam? A: This is a problem with the underlying data source: on most captures "入" (inflow) is reported as "-". The water level and outflow are shown as continuous lines. A: Start with this Twitter thread. The Three Gorges project alone has cut downstream floodwaters by 34 percent, officials said. The Three Gorges Dam is the world's largest capacity hydroelectric power station with 34 generators: 32 main generators, each with a capacity of 700 MW, and two plant power generators, each with capacity of 50 MW, making a total capacity of 22,500 MW. If there were no other changes, and the assumption of the reservoir’s water level would remain the same so that the continuous length of the day would add up to 0.00000006 seconds, then in 47,650, the time of day would be increased by 1 second. As one anon said, "CCP might just have the real data, and then decide by committee what levels they want to share, and then get the water system operator to tell them how far is too far." We assume that estimating and updating inflow requires manual steps, hence the irregular updates. You can also download it as a single tar.xz archive. The water level behind the Three Gorges dam may fall to less than 155 meters after releasing water at a rate of 7,000 cubic meters per second to ease a … The Chinese Ministry of Water Resources’ Yangtze River Hydrology Committee and China Three Gorges Group noted that to prevent the dam from overflowing, they had lifted more floodgates to drain water at 37,000 cubic meters per second since Tuesday, after the reservoir’s water level increased by more than eight meters in 48 hours to 163.5 meters. The Three Gorges Dam A remote sensing analysis found that in late 2018 and 2019, water levels of the Three Gorges dam reservoir has climbed to dangerous water levels. … And remember, friends, >>177777777, >>269999999, >>277777777. Kim fires senior economic official amid deepening N Korea crisis, Kent coronavirus variant set to ‘sweep world’, says UK scientist, Al Jazeera Centre for Public Liberties & Human Rights. A: Absolutely, and please do! The Three Gorges dam is desperately discharging water, but the water level has risen by 5 meters in 34 hours. Q: Can you add data for beginning of July? China’s giant hydroelectric dams have stored more than 100 billion cubic metres of floodwater this year, and shielded 18.5 million residents from evacuation, according to government figures. In recent years, the water level of Poyang Lake was altered dramatically, in particular showing a significant downward trend after the operation of the Three Gorges Dam (TGD) in 2003, thus seriously affecting the lake wetland ecosystem. Residents in the Chinese cities of Chongqing and Wuhan had to flee when the fifth flood peak on the Yangtze River arrived at the Three Gorges Dam.. A: We agree. The reservoir is designed to hold a maximum water level of 175 meters. water level of Poyang Lake di erently in over the year [8]. Q: Is your data set/plotting scripts public? Can I re-post your graphs? Key Technologies of the Hydraulic Structures of the Three Gorges Project. Sediment problems. NASA scientists calculated that the large volume of water in reservoir Three Gorges Dam will increase the day length to 0.0000000006 seconds. HLS streams: here and here (mirrors this). The Three Gorges Dam on the Yangtze River discharges water to lower the water level in the reservoir following heavy rainfall and floods in a few regions, Yichang, Hubei province, China July 17, 2020. Its primary function Torrential rain has water level at world’s biggest dam to record forcing authorities to increase discharge volumes. #ChinaFloods2020 #Hubei #ThreeGorgesDam #三峡大坝 pic.twitter.com/bQB747Zqh7, — CGTN Culture (@CGTN_Culture) August 21, 2020. But opponents say the flood control capability of the Three Gorges Dam is limited, and it could even make the problem worse in the long term. The organization defines a "large dam" as a dam with a height of 15 meters (49 feet) or greater, or a dam between 5 meters and 15 meters which can contain more than 3 …
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