Nepal floods present the chance; China’s mega-dam raises larger questions for India | India Information

The rain got here down relentlessly, turning quiet mountain streams into raging torrents and slim roads into muddy rivers. Throughout Nepal, floodwaters and particles swept via houses, roads and hydropower amenities, forsaking damaged bridges, stranded communities and villages minimize off from the skin world.Within the mountains, the place steep slopes already make life precarious, swollen rivers, landslides and collapsing rock can rapidly flip a pure hazard right into a cascading catastrophe.For communities residing alongside slim Himalayan valleys, a sudden rush of water, ice and particles can depart little time to flee.The latest flash floods in Nepal have introduced these vulnerabilities sharply into focus. Search groups have battled heavy rain and thick layers of particles whereas searching for folks believed to be trapped in tunnels, hydropower tasks and underground energy amenities alongside the Bhotekoshi River.However the devastation has additionally raised a bigger query: what occurs when the already fragile Himalayan atmosphere is mixed with more and more giant infrastructure tasks, together with dams, tunnels, highways and hydropower amenities?That query has explicit significance for India as a result of the Himalayas aren’t confined by political boundaries. Rivers, glaciers, mountain programs and geological faults minimize throughout China, Nepal, Bhutan and India. A catastrophe originating within the excessive mountains can due to this fact have penalties far past the purpose the place it begins.It’s towards this backdrop that China’s large hydropower mission on the Yarlung Tsangpo, recognized downstream because the Brahmaputra, has come below renewed scrutiny.The mission, being inbuilt Tibet’s Medog County on the dramatic Nice Bend of the river, is anticipated to develop into the world’s largest hydropower mission.Its location, nonetheless, provides one other layer of concern. The mission sits in one of many world’s most geologically difficult areas, marked by steep Himalayan terrain, lively faults, earthquakes, landslides, glaciers and excessive climate.These pure dangers make the dam not only a large engineering endeavor, but additionally a strategically delicate mission situated upstream of one in every of India’s most vital rivers.

Why the Brahmaputra is so vital

China formally started building of the Yarlung Tsangpo River Decrease Reaches Hydropower Mission in July final 12 months. The mega-dam is being inbuilt Medog County, close to the river’s Nice Bend, the place the Yarlung Tsangpo makes a dramatic U-turn earlier than coming into India.China calls the Brahmaputra the Yarlung Tsangpo. After crossing into Arunachal Pradesh, the river is called the Siang or Dihang earlier than flowing via Assam and finally coming into Bangladesh, the place it is called the Jamuna.The mission is situated in one of many world’s deepest river gorges. Over a stretch of about 50 kilometres, the river drops almost 2,000 metres, creating monumental potential for hydropower era.The mission is anticipated to comprise 5 cascade hydropower stations and generate greater than 300 billion kilowatt-hours of electrical energy yearly, greater than thrice the annual era of China’s Three Gorges Dam, based on stories cited within the materials.With an estimated value of round 1.2 trillion yuan, or about $167.8 billion, it’s set to rank among the many world’s costliest infrastructure tasks. Chinese language Premier Li Qiang has described it because the “mission of the century”.However the significance of the mission extends far past its dimension or power-generation capability.The Brahmaputra is excess of a river. It’s an financial, ecological and strategic lifeline for thousands and thousands of individuals throughout the jap Himalayas and South Asia.Originating on the Tibetan Plateau, the river flows via China, India and Bangladesh earlier than emptying into the Bay of Bengal. It stretches for roughly 2,900 kilometres and drains a basin of about 580,000 sq. kilometres shared by China, India, Bhutan and Bangladesh.One of many world’s largest rivers by discharge, the Brahmaputra can be recognized for its huge braided channels. Its waters assist agriculture, irrigation, fisheries, transport, hydropower and ecosystems throughout the area.For India, the river turns into significantly vital after coming into Arunachal Pradesh and Assam. The Brahmaputra and its tributaries maintain communities, farmland and ecosystems throughout the Northeast, whereas additionally bringing the area a few of its most damaging floods.That’s what makes China’s place upstream so important for India. Beijing can’t merely cease the Brahmaputra from flowing into India. By the point the river reaches Arunachal Pradesh, it has already begun receiving substantial water from rainfall and tributaries, with flows rising sharply through the monsoon.The priority is due to this fact much less about China with the ability to completely minimize off the river and extra about whether or not a big upstream hydropower system might affect the timing and quantity of flows.The operation of reservoirs, tunnels, energy stations and different infrastructure might probably have an effect on seasonal water releases.For India, this raises questions not solely about water safety, but additionally about entry to dependable hydrological data and the flexibility to organize for sudden modifications in river flows, significantly in periods of heavy rainfall or excessive climate.

What did consultants discover

The research, revealed within the Chinese language-language journal Sedimentary Geology and Tethyan Geology and supervised by the state-owned China Geological Survey, examined the Paizhen Fault in Tibet.In line with the researchers, the fault has remained extremely lively because the Pleistocene epoch, or Ice Age, and continues to point out proof of geological exercise. Geological relationship of historic lake sediments means that motion alongside the fault occurred as not too long ago as about 9,500 years in the past.The researchers warned that repeated motion alongside the fault had fractured and weakened surrounding rock formations. This might make main engineering constructions within the space extra susceptible to geological hazards.“The Paizhen space is situated throughout the reservoir space of the Yarlung Tsangpo downstream hydropower station,” the paper mentioned.The researchers mentioned the fault might have a big influence on the structural stability and building of close by infrastructure, together with dams, roads, bridges and tunnels, in addition to the reservoir space.Additionally they cited the magnitude 6.9 earthquake that struck the Milin space of Tibet in 2017 as proof that the area stays seismically lively.“Beneath regional seismic motion, landslides and collapses can simply be induced, threatening the security of engineering amenities and personnel,” they mentioned.The scientists really helpful reinforcing susceptible slopes and putting in retaining constructions to scale back the chance of landslides and collapses throughout building and after the mission turns into operational.The analysis was carried out by scientists from the Chengdu College of Expertise, the Civil-Army Integration Centre of the China Geological Survey, and the Center Yarlung Zangbo River Pure Sources Remark and Analysis Station.The findings are important as a result of they arrive from Chinese language researchers working inside China’s personal geological and scientific establishments.They don’t set up that the mission is unsafe or {that a} catastrophe will happen. However they underline the issue of establishing and working a mega-project in a area the place geological instability is an inherent function of the panorama.

Is China able to ‘stopping’ the Brahmaputra?

The concept that China might merely cease the Brahmaputra from reaching India is usually overstated. Srijan Pal Singh, creator, former Advisor for Coverage and Expertise to former President APJ Abdul Kalam, CEO of Homi Lab and founding father of Kalam Centre, mentioned the extra real looking concern was China’s capability to affect the timing of flows and the dearth of transparency surrounding the administration of the river.“The true concern, due to this fact, is much less about China slicing off the Brahmaputra and extra about transparency, dependable data-sharing, and India’s capability to anticipate and handle sudden modifications in circulation,” Singh informed TOI.He mentioned that whereas a big share of the Brahmaputra’s annual circulation is generated inside India via monsoon rainfall and tributaries, the lean-season circulation originating in Tibet stays strategically vital.Singh additionally cautioned towards viewing the mission solely via the lens of water diversion. “Any giant dam on a world river has each financial and strategic implications,” he mentioned.He added that management over upstream infrastructure might itself create strategic affect even with out bodily limiting the river.“It isn’t essential to cease the circulation of water for leverage to exist. The power to control flows, gather hydrological information, or alter the timing of water releases can form the selections of downstream nations, significantly in periods of rigidity or excessive climate,” he mentioned.The excellence issues as a result of the principal problem for India isn’t merely the amount of water however the predictability of that water.Through the monsoon, India wants correct details about upstream river situations to organize for floods. Through the dry season, details about river flows turns into equally vital for agriculture, water administration and ecosystems.

What India is worried

India’s issues over the Medog mission transcend water safety. The Yarlung Tsangpo flows from Tibet into Arunachal Pradesh. A mega infrastructure mission on the river, near the disputed border, due to this fact has an inevitable strategic dimension.The largest concern might in the end be geological. The mission lies within the jap Himalayas, alongside the collision zone of the Indian and Eurasian tectonic plates.The area is marked by lively faults, steep slopes, fractured rock, earthquakes and frequent landslides, all of which pose challenges for a mega-dam and the infrastructure wanted to assist it.The 1950 Assam-Tibet earthquake, estimated at magnitude 8.7, stays a stark reminder of the area’s seismic potential. It induced widespread destruction throughout Tibet and Assam and killed hundreds of individuals.The Chinese language geological research has added to issues over the location. Researchers discovered that repeated fault exercise had weakened rock formations and really helpful measures similar to reinforcing susceptible slopes and establishing retaining constructions to scale back landslide dangers.Writing in Mission Syndicate, Brahma Chellaney, professor emeritus of strategic research on the New Delhi-based Centre for Coverage Analysis, mentioned the warning from Chinese language scientists was significantly important.“The geologists conclude that the terrain has a ‘unfastened construction and weak cohesion’ and warn that fault motion or an earthquake might simply set off large-scale instability, threatening each the reservoir and surrounding infrastructure,” Chellaney wrote.“Sarcastically, the newest proof means that China’s scientific institution understands the hazards of constructing the unprecedented super-dam extra clearly than its political management seems prepared to acknowledge. Now that China’s personal geologists have raised the alarm, Beijing should embrace transparency and settle for transboundary tasks earlier than a possible water bomb is absolutely assembled upstream,” Chellaney wrote on X.There are additionally issues about the opportunity of reservoir-triggered seismicity, during which the burden of water saved behind a big dam can have an effect on stress and stress alongside present faults. China’s 2008 Wenchuan earthquake has usually been cited on this debate.Scientists have differed over the extent of the Zipingpu reservoir’s function, however some research have advised that the reservoir might have contributed to triggering or advancing seismic exercise.The priority, due to this fact, isn’t solely whether or not an earthquake might harm the dam. A significant earthquake might additionally set off landslides, rockfalls and failures throughout the encircling infrastructure.Singh mentioned advances in engineering have considerably improved dam security however can’t fully take away geological dangers.“Fashionable engineering can design dams to resist very robust earthquakes. Superior supplies, versatile structural designs and steady monitoring programs have enormously improved dam security. Nonetheless, no engineer can fully eradicate geological danger,” he mentioned.The area has additionally witnessed glacier collapses and landslides. Sayanangshu Modak, a researcher on the College of Arizona, cited the huge 2021 glacier collapse close to the Nice Bend, which quickly blocked the river and sharply raised water ranges, SCMP reported.Lengthy-term security, he added, would depend upon steady monitoring, common assessments and the flexibility of the mission to resist not solely earthquakes but additionally landslides, rockfalls and excessive climate occasions.

What does Nepal’s latest catastrophe present?

The August 26 catastrophe in Nepal provides a stark instance of how Himalayan hazards can work together. The proof accessible to date factors to a glacier-rock collapse and large particles avalanche reasonably than a traditional monsoon flood.The collapse triggered an ice-rock avalanche that quickly blocked the Bhotekoshi River, sending an enormous quantity of ice, rock, mud and water downstream and inflicting widespread destruction.The avalanche reportedly travelled at round 50 metres per second. Such occasions display the cascading nature of Himalayan disasters.A glacier collapse or earthquake can set off a landslide; a landslide can block a river; and the sudden failure of that blockage can ship a damaging surge of water and particles downstream.Infrastructure situated alongside the river hall, together with roads, bridges, hydropower stations and settlements, can then develop into a part of the catastrophe chain.The 2015 Nepal earthquake supplied one other warning. Analysis following the quake discovered that earthquake-triggered landslides had been a serious trigger of harm to hydropower infrastructure and estimated that a few quarter of present, constructed and deliberate Himalayan hydropower tasks confronted a excessive chance of moderate-to-severe earthquake harm.

How local weather change is including to the chance

Local weather change is including one other layer of uncertainty to an already fragile panorama. Glaciers throughout the Hindu Kush Himalaya are dropping ice, whereas permafrost degradation can destabilise high-altitude slopes. Glacial lakes are increasing in some areas, whereas altering rainfall patterns are rising the chance of utmost precipitation.Nepal has hundreds of glacial lakes, a few of which may probably produce catastrophic Glacial Lake Outburst Floods, or GLOFs.Local weather change doesn’t trigger each landslide, avalanche or flood. However it may alter the situations that make such occasions extra seemingly and make their timing and scale tougher to foretell.That creates a selected problem for hydropower improvement within the Himalayas.As Himanshu Thakkar, coordinator of the South Asia Community on Dams, Rivers and Individuals, has argued, environmental, social and disaster-risk assessments have to account for the precise traits and historic hazards of particular person valleys.

The ecological issues

The Medog mission is being inbuilt an exceptionally delicate panorama. The Nice Bend of the Yarlung Tsangpo is marked by steep slopes, glaciers, excessive rainfall, unstable rock formations and lively tectonic constructions.Geologist Fan Xiao has described the Yarlung Tsangpo Grand Canyon as a uncommon biodiversity hotspot in a geologically unstable area.He has warned that a number of hydropower stations, excessive dams, reservoirs and intensive tunnels might enhance landslide dangers and trigger long-term environmental harm.The influence of such a mission can be unlikely to be restricted to the dam itself. Roads, tunnels, bridges, transmission traces, employee settlements and different supporting infrastructure will likely be wanted to construct and function the mission.Every intervention can alter slopes, drainage patterns and river corridors, creating extra stress on an already fragile ecosystem.The ecological penalties are significantly troublesome to foretell over a long time, particularly as local weather change continues to reshape the Himalayan atmosphere.The mission’s location additionally raises questions on its strategic implications for India. The priority isn’t merely that the dam might alter river flows. The infrastructure required to construct and function such a large mission might itself have strategic worth.“Such a big mission requires roads, tunnels, bridges, energy infrastructure and communication networks. These belongings can enhance entry to distant border areas and assist logistics in peacetime in addition to throughout a disaster,” Singh mentioned.He added that whereas the mission alone wouldn’t alter the navy steadiness alongside the Line of Precise Management, it might enhance China’s long-term presence close to the border and enhance its understanding of the terrain and river system.“The strategic steadiness within the jap sector will proceed to rely totally on navy functionality, border infrastructure, surveillance and operational readiness on each side,” he mentioned.Singh additionally famous that India has accelerated hydropower improvement downstream as a part of its effort to strengthen water utilisation.Some analysts, nonetheless, see the mission as giving Beijing extra diplomatic leverage due to its upstream place. Shanghai-based safety analyst Ni Lexiong informed SCMP that the dam might “successfully create geopolitical leverage vis-a-vis India diplomatically”.Others take a extra cautious view. Liu Zongyi, a senior fellow on the Shanghai Institutes for Worldwide Research, argued that issues about China’s capability to govern river flows are overstated and that the mission wouldn’t essentially change India-China relations.For India, due to this fact, the problem is broader than the query of whether or not China can management the Brahmaputra.It’s about managing the mixed dangers of upstream infrastructure, unsure hydrological flows, seismic hazards, local weather change and the mission’s proximity to a delicate border.

Dam can have an effect on Earth’s rotation

Earth’s rotation isn’t completely fixed. Pure forces similar to earthquakes, the Moon’s gravitational pull, melting ice and the motion of water can subtly change how rapidly the planet spins. Even human-made constructions can have a measurable, although extraordinarily tiny, impact.China’s Three Gorges Dam supplies one hanging instance. When its huge reservoir is stuffed, the large quantity of saved water redistributes mass on Earth. This will increase the planet’s second of inertia, inflicting it to rotate very barely extra slowly.Nasa scientist Dr Benjamin Fong Chao calculated that the total reservoir might lengthen the day by about 0.06 microseconds, or 60 billionths of a second, whereas shifting the place of the poles by roughly two centimetres, BBC reported.The change is way too small to have any noticeable impact on on a regular basis life. But it surely demonstrates how shifting billions of tonnes of water can produce a measurable change within the planet’s bodily dynamics.

China calls Brahmaputra mission secure

Beijing has repeatedly sought to reassure downstream nations in regards to the security of the Medog mission. An official assertion issued in December 2024 mentioned the mission was secure and prioritised ecological safety.“By intensive geological explorations and technical developments, a strong basis has been laid for the science-based, safe, and high-quality improvement of the mission,” it mentioned.Chinese language officers have additionally maintained that the mission follows the best business requirements and wouldn’t negatively have an effect on downstream nations.A Chinese language international ministry spokesperson mentioned China was extremely accountable in growing cross-border rivers and had intensive expertise in hydropower building. Beijing has additionally mentioned it could keep communication with downstream nations and cooperate on catastrophe prevention and mitigation.The latest geological research doesn’t essentially contradict these assurances within the sense of proving that the dam is unsafe. But it surely does display that the geological challenges recognized by exterior observers are additionally being studied by Chinese language scientists themselves.

The issue of hydrological information

For India, one of the vital vital classes from the previous is the significance of dependable river-flow data. China suspended the sharing of hydrological data on the Brahmaputra and Sutlej through the 2017 flood season.In a written reply within the Rajya Sabha on February 8, 2018, the Ministry of Exterior Affairs mentioned China had not supplied hydrological data on the Brahmaputra and Sutlej regardless of present bilateral agreements. Beijing attributed the interruption to “technical causes”.The suspension occurred through the 73-day Doklam standoff between India and China, though Beijing maintained that the interruption was associated to the upgrading of hydrological monitoring stations.China resumed Brahmaputra hydrological information sharing in Might 2018. The unique settlement on sharing hydrological data for the Brahmaputra was signed in 2002 and subsequently renewed.

Why is transparency vital?

For India and Bangladesh, the problem is due to this fact broader than whether or not China can management the Brahmaputra. It entails the mixed dangers of upstream infrastructure, seismic hazards, local weather change, ecological harm and uncertainty over future water flows.The sheer scale of what China has known as the “mission of the century” has additionally elevated requires better transparency in regards to the dam’s design, geological assessments, reservoir operations and attainable downstream impacts.Worldwide rules governing transboundary rivers usually require nations to change related data, keep away from important cross-border hurt and seek the advice of on tasks that might have an effect on different states.Chellaney has argued that China’s restricted disclosure in regards to the mission is especially regarding given its potential penalties for downstream nations.Singh mentioned India’s speedy precedence ought to be stronger mechanisms for information-sharing.“India’s first precedence ought to be to strengthen institutional mechanisms for the common change of hydrological information, particularly through the monsoon season,” he mentioned.Chellaney argued that the warnings raised by Chinese language researchers ought to immediate better worldwide scrutiny.“When scientists working below a communist regime situation such warnings, the worldwide group should listen,” he wrote.For India, the Medog mission is due to this fact not only a query of water. It’s a query of the best way to handle a mix of geological, environmental and strategic dangers on a river that crosses nationwide borders and helps thousands and thousands of individuals downstream.

A Himalayan warning for India

The latest catastrophe in Nepal has proven how rapidly the Himalayas can flip from a supply of water and vitality right into a supply of extraordinary hazard.A glacier can collapse. Rock can fall right into a river. A brief blockage can kind. The blockage can breach. A wall of water and particles can then journey via a slim valley at monumental pace.When roads, bridges, tunnels, hydropower crops and settlements occupy that very same valley, the results multiply. That is the central problem dealing with Himalayan improvement.The difficulty isn’t whether or not Nepal, India or China ought to develop their mountain areas. Hundreds of thousands of individuals depend upon infrastructure, electrical energy, connectivity and financial improvement.The query is whether or not that improvement is being deliberate based on the realities of a younger, unstable and quickly warming mountain system.For India, the query turns into much more consequential as a result of the nation’s main rivers originate or circulation via these mountains earlier than reaching the plains.China’s Yarlung Tsangpo mission due to this fact represents greater than a large power-generation scheme. It raises questions on seismic security, river-flow administration, ecological change, information sharing and strategic affect.The Himalayas are already below stress from local weather change, earthquakes, landslides, glacier retreat and intense rainfall. Including extra infrastructure with out accounting for cumulative danger might create new vulnerabilities even whereas addressing present strategic issues.The speedy reason for Nepal’s August 26 catastrophe might have been a glacier-rock collapse. However the bigger warning is unmistakable: the Himalayas have gotten an more and more harmful place to disregard geological and climatic limits.As Nepal Prime Minister Balendra Shah mentioned in his September 2 tackle to the Home of Representatives, “local weather change is the world’s shared duty, and that Nepal should forcefully marketing campaign for local weather justice and worldwide monetary compensation reasonably than easy post-disaster assist”.He linked the latest catastrophic flash floods in Rasuwa to a warming local weather and described the catastrophe as a warning for the broader Himalayan area and the world.That warning extends past Nepal.The Brahmaputra doesn’t recognise borders. Neither do earthquakes, glaciers, landslides or excessive climate. As China strikes forward with the Medog mega-project and India expands its personal hydropower infrastructure, the true check will likely be whether or not improvement can maintain tempo with the dangers of a quickly altering Himalayas.