For decades, Nepal’s leaders have promised prosperity by harnessing ‘white oil’, the vast hydroelectricity potential of Himalayan rivers. So far, less than one-tenth of the 48,000MW of feasible hydropower has been exploited — nearly all from run-of-river schemes that do not store water, but use the energy of steep rapids. This results in an annual monsoon power glut, and power scarcity in the dry season as rivers run low. Dams to store water in large reservoirs would solve that problem and balance year-round electricity generation and water supply. Nepal’s only existing reservoir project is Kulekhani, a rock-filled dam built back in 1982 that impounded a 7km long lake called Indrasarovar near Kathmandu. The only second reservoir in Nepal is the 150m tall concrete dam here in Tanahu that stores water for 17 days and is scheduled for completion in 2026.&nbsp; Plans for other dams are stalled: Budi Gandaki (1,200MW) with a 280m high dam, West Seti (750MW), Sun Kosi II (1,110MW) and the mammoth Mahakali (Pancheshwar) Dam on the western border with India. Even bigger projects have been proposed, like the gigantic Karnali Dam at Chisapani (10,800MW) and the Kosi High Dam at Barachhetra in Sunsari.&nbsp; Read also: <a href="https://nepalitimes.com/here-now/dam-dangerous">Dam dangerous</a>, Ramesh Kumar  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_e9384b8a0ef56b30019f6f217a7b3536fed0fa7abdb495a20efdddb622bfbed7.jpg" data-media-id="editor_1" data-image-id="2024072005078_e9384b8a0ef56b30019f6f217a7b3536fed0fa7abdb495a20efdddb622bfbed7" data-rendition-name="original" width="3500" height="1970" loading="lazy" alt="Rivers be dammed NT"> <figcaption>Built in 1982, Kulekhani is the only reservoir project in Nepal today. Photos: PINKI SRIS RANA</figcaption> </figure>  “Except Kulekhani, all hydropower projects in Nepal are run-of-river which produce enough electricity during the peak monsoon season, but in winter there is no rain and during that time, we buy electricity at a costlier rate than we sell to India,” says former Water Resources Minister Dipak Gyawali.&nbsp; Gyawali reasons that storage hydropower will even out the seasonal imbalance of both the water and the electricity, and boost Nepal’s domestic economy.&nbsp; However, storage projects are more expensive because of construction, land acquisition and impact on food supply. But there is a way to reduce cost by ensuring that regulated water has multi-purpose benefits downstream for agriculture and for fisheries, water supply, or tourism, with electricity a byproduct. Hydropower developer Kumar Pandey agrees: “The widening of a reservoir project’s purpose broadens investment prospects from different sectors and helps minimise the energy cost.” However, Nepal will have to balance the economy’s growing demand for year-round clean energy with those dams damaging local livelihoods, riverine ecosystems, lowering food production and exposing expensive infrastructure to climate and seismic risk.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_524f39c49583df1fb201abf67995edcc1dc808dd7a1b499b247978a750c06c5e.jpg" data-media-id="editor_2" data-image-id="2024072005078_524f39c49583df1fb201abf67995edcc1dc808dd7a1b499b247978a750c06c5e" data-rendition-name="original" width="3500" height="2625" loading="lazy" alt="Rivers be dammed NT"> <figcaption>Construction site of the 140m high concrete dam on the Seti River that will impound a reservoir 18km long in Tanahu when the project is completed in 2026. </figcaption> </figure>  Industrialised countries are dismantling some of their dams to let their rivers flow free again. But Nepal is only now embarking on a dam-building spree for energy and regulated water.&nbsp; “Nepal’s need for electricity is still to be fulfilled, so dismantling dams is pretty far-fetched,” says Gyawali. “Rather than ‘no dams’, we should be pushing for ‘no bad dams’.” There are currently 167 licensed hydropower projects in Nepal whose installed capacity will reach 3,000MW this year. When 278 new projects that are under construction come on stream, electricity generation will exceed 10,000MW by 2030. Dams in Nepal tend to have shorter lifespans because Himalayan rivers have some of the highest sediment loads in the world. Making dams seismic resistant adds to their cost. On top of this, there are now added dangers of glacial lake outburst floods, extreme rainfall and landslide dammed river ruptures.&nbsp; Nepal’s rivers frequently suffer these disasters, the latest in 2021 in Melamchi and eastern Nepal last year that damaged hydropower infrastructure. But an example of catastrophic destruction was the October 2023 flood on Sikkim’s Teesta that destroyed the $1.2 billion Chungthang dam and other projects. Read also: <a href="https://nepalitimes.com/multimedia/missing-pieces-of-the-hydropower-jigsaw">Missing pieces of the hydropower jigsaw</a>, Sonia Awale&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_6495183f214ce73edf5b9ffe8a307f150b9a21d59b892c7b5ec46d6861a32a66.jpg" data-media-id="editor_4" data-image-id="2024072005078_6495183f214ce73edf5b9ffe8a307f150b9a21d59b892c7b5ec46d6861a32a66" data-rendition-name="original" width="1750" height="1347" loading="lazy" alt="Rivers be dammed NT"> <figcaption>The 3D rendition on the Tanahu project dam.</figcaption> </figure>  “Climate change has drastically changed rainfall patterns, and we are yet to understand the impact on the hydropower projects,” says Kumar Pandey. “There can be many different factors that put dams at risk, but exaggerating the risks even before a project is started is fear-mongering.” Near Damauli, halfway between Kathmandu and Pokhara, the designers of the Tanahu dam say they have taken into account the Seti River’s origins in the glaciers of the Annapurna and its frequent floods.&nbsp; “We factor in the worst-case scenario and measure the probable maximum flood that could happen and tailor the structure to withstand the probable flood,” says acting project head Shyamji Bhandari at the project site near Damauli. Tanahu’s design includes flushing gates to minimise monsoon sedimentation to ensure longevity of the dam. Bhandari adds, “And if these measures aren’t enough and a calamity does strike, we also have an emergency siren system to warn downstream areas.” Nepal’s rivers are older than the Himalaya, and many of them start in China, cutting mighty gorges through the mountains, and flow down to join the Ganga in India before emptying into the delta in Bangladesh.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_f34e6ce2a703d568ea5ce69de3d75dd667838996f0a083673c78eb249c47fd0f.jpg" data-media-id="editor_5" data-image-id="2024072005078_f34e6ce2a703d568ea5ce69de3d75dd667838996f0a083673c78eb249c47fd0f" data-rendition-name="original" width="1330" height="882" loading="lazy" alt="Rivers be dammed NT"> </figure>  Rivers do not respect country boundaries, but hydropower projects are built within national jurisdictions. Nepal has had to navigate intricate geopolitics with its lower riparian neighbour India, and it has not always gone smoothly. Past projects like the Kosi and Gandaki that India built on the border 50 years ago are seen by many experts as being unfair to Nepal. More recently, New Delhi has refused to buy surplus electricity from hydropower projects in Nepal in which the Chinese are involved. Reservoirs in the Himalaya are going to be even more geopolitically sensitive because the climate crisis will make water a strategic commodity for India’s densely populated and increasingly prosperous Ganga plains. “Rivers are continuous with upstream-downstream linkages. Anything done on rivers in Nepal will have an impact downstream, which is why rivers should be studied in totality, and infrastructure designed keeping that in mind,” says water expert and author Ajaya Dixit.&nbsp; Storage dams in Nepal will regulate water on rivers flowing downstream, and if Nepal builds them with international loans India will benefit for free, while Nepal’s fertile and populated valleys are submerged. But for strategic reasons, India may want to have a say in Nepal’s plans to dam its rivers. An estimated<a href="https://www.researchgate.net/publication/321426715_Groundwater_resilience_Nepal_Preliminary_findings_from_a_case_study_in_the_Middle_Hills"> 70% of dry season flow</a> and 40% of annual discharge on the Ganga comes down from its tributaries in Nepal. It therefore makes sense for India and Nepal to plan for the future by regulating flow. Read also: <a href="https://nepalitimes.com/news/balance-of-power">Balance of Power</a>, Sonia Awale  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_d26f93973f5687cbcde14e194a9f58979e94326dc612edc86221b97f55677790.jpg" data-media-id="editor_8" data-image-id="2024072005078_d26f93973f5687cbcde14e194a9f58979e94326dc612edc86221b97f55677790" data-rendition-name="original" width="2250" height="1266" loading="lazy" alt="Rivers be dammed NT"> </figure>  The other consideration is ecological. Dams are even more disruptive on riverine ecosystems than run-of-river schemes, and destroy the habitat of Himalayan rivers which are havens for biodiversity. Some endangered fish, amphibian and bird species are found nowhere else on the planet.&nbsp; A 2018 Asian Development Bank report, Impact of Dams on Fish and Rivers in Nepal, found that hydropower projects did not use any tool to measure the possible impact on aquatic biodiversity. &nbsp; ‘Dams act as barriers for migratory movement of fish, in many cases, threatening species’ survival,’ the report stated. In northeastern Nepal, a local community in Lumba Sumba is lobbying internationally to crowdfund a campaign against a hydropower project on ancestral land in the Chhujung River valley that they say will also disturb the habitat of endangered snow leopards. How well Nepal’s planners can balance geopolitics, rising energy demand and economic growth with ecosystem protection and respect for human rights will be tested in the coming years, as the country embarks on a dam-building spree. &nbsp;&nbsp; <h2>Displacing people to store water</h2>  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072005078_2870cd71c55d84dd835d90b13a34235a0c477b525a2b78ec2b3a3b129e065a83.jpg" data-media-id="editor_9" data-image-id="2024072005078_2870cd71c55d84dd835d90b13a34235a0c477b525a2b78ec2b3a3b129e065a83" data-rendition-name="original" width="2000" height="1333" loading="lazy" alt="Rivers be dammed NT"> <figcaption>The Tanahu project will inundate the house of Battimaya Biswakarma as well as those of her family members in Wangtangetar.</figcaption> </figure>  Nepal’s first reservoir project on the Kulekhani Khola was built in 1982 on a spring-fed stream near Kathmandu. The inundation displaced 3,500 people who were not adequately compensated. “Back then, people were naive and Kulekhani residents gave up their land without much discussion,” says Ram Kumar Shrestha, 59, whose family was among those who had to move. They are currently living on the outskirts of Markhu. His father, Jhamak Lal Shrestha was the village head during the absolute monarchy days. Residents of Kulekhani under consideration to be given land in Thori near the Indian border in Chitwan, but many were not happy. “It was too hot and there was danger from wild animals,” recalls the senior Shrestha, now 79. Some invested the compensation money on land elsewhere and did well, but others spent it on everyday expenses and were soon destitute. The compensation and resettlement plan for the Kulekhani displaced was ‘deeply flawed’ as per a report by researcher Jagdish Chandra Pokharel. And Nepal’s record for resettlement of people for infrastructure and national parks has not improved since then.&nbsp; Read also: <a href="https://nepalitimes.com/here-now/geopolitics-of-nepal-s-rivers">Geopolitics of Nepal’s rivers</a>, Ramesh Kumar Kulekhani’s history is being repeated in Tanahu. By the banks of the Seti River in the village of Badarkuna, cows and water buffaloes graze without a herder in sight amidst cement pillars with painted numbers.&nbsp; These are farms that belong to the people of Paltyang village, who cultivated fields by the river but lived up the mountain till as recently as three years ago.&nbsp; “Our ancestors lived in Paltyang because there was malaria down here in Badarkuna,” explains Til Bahadur Thapa, 64, who along with wife Sansasri worked the fields by the river and climbed back up to Paltyang just to sleep.&nbsp; The cement pillars on Thapa’s field mark the area that will be inundated by the Tanahu dam. After they were put up, the Thapas stopped farming here.&nbsp; Yam Kumari Thapa, 43, grew more than enough rice and maize in her fields near Fedi Khola, a tributary of Seti– that will soon be submerged. She sold the surplus in the market. Now, she is fighting for compensation for her land.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2024072708078_bce072e5e7051cbbb995ed2763bca448927b576f14acdcc8e636755961642838.png" data-media-id="editor_11" data-image-id="2024072708078_bce072e5e7051cbbb995ed2763bca448927b576f14acdcc8e636755961642838" data-rendition-name="original" width="1920" height="1080" loading="lazy" alt="Building dams"> </figure>  A little above Badarkuna is a Dalit settlement that will also soon be underwater. The land is undocumented, and this means compensation from the project will be complicated for the 12 families here.&nbsp; “We know that electricity is important and we are not against development,” says Battimaya Biswakarma of the Dalit settlement of Wangtangetar. “All we are asking for is a place to live like we were living here.” The Tanahu project has affected 560 households but 41 households are fighting for land compensation. How the Tanahu project compensates them will set a &nbsp;precedent for other even bigger reservoir projects being planned, like Budi Gandaki which will displace 3,560 households and Sun Kosi II which will affect 15,000 people. “Hydropower is built on rivers and water is a socially required resource which is why the development of dams brings out a lot of local social and environmental issues,” explains hydropower developer Kumar Pandey. &nbsp; Run-of-river projects are at high risk from floods, but relatively benign because unlike reservoirs, they do not displace too many people and submerge fertile farmlands.&nbsp; Some experts say Nepal should not be investing in colossal projects like the $1.3 billion Upper Arun in northeastern Nepal directly under mountains that will be vulnerable to glacial lake outburst floods, and instead prioritise smaller schemes and spread the risk. “Smaller run-of-river projects require much less area while mega storage projects submerge huge tracts of farmland and displace people, making the financial and social cost heavier,” says Jagdish Chandra Pokharel, author of the Kulekhani report and former chair of the National Planning Commission.&nbsp; However, the need for a year-round balance of electricity and water supply is forcing Nepal’s planners to look at the larger picture and opt for big reservoir projects.&nbsp; Til Bahadur Thapa looks below at his fields on the banks of Seti River that his ancestors have farmed for generations but will now be submerged by the Tanahu reservoir. He says simply, “A country cannot develop by driving people like us off the land.” &nbsp; Read also: <a href="https://nepalitimes.com/here-now/saving-the-waters-of-life">Saving the waters of life</a>, Mohan Mainali

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Rivers be dammed

Nepali hydropower industry is poised to play a bigger role in Nepal’s energy transition to meet its 2045 net zero target. Nepal Hydropower Association (NHA) last month hosted a ‘Made in Nepal’ booth at the Hydro23 conference in Edinburgh which was attended by 1,000 delegates from 70 countries. There were over 30 delegates from Nepal. The Nepal booth showcased and promoted Nepali hydropower expertise, experience and its ability to offer a diverse range of services across the whole hydropower value chain in emerging markets for projects up to 100MW. This was a show of Nepal’s new confidence in the experience its technicians and engineers have gained in the past decades. With its natural geographical advantage, Nepal actually has over 100 years of experience in hydro-electricity, with <a href="https://nepalitimes.com/here-now/nepal-s-1st-hydroelectric-plant-is-a-museum-piece">Pharping being only the second hydropower plant in Asia</a> when it was built in 1911. In his new book What Went Right: Sustainability versus Dependence in Nepal's Hydropower Development, US professor Mark Liechty explains why Nepal’s hydropower sector has been such a success among the many development models that Nepal’s donors experimented with over the last seven decades. Liechty traces the history of indigenous capacity in Nepal’s hydropower with capital financing, tender bid process, EIA, engineering consulting, construction, generation, maintenance, transmission to distribution. Nepalis also gained experience in project management and delivery along with increased sophistication of the local high precision machining and tunnelling expertise in the challenging Himalayan geology and climate. Nepal’s Ambassador to the UK Gyan Chandra Acharya said: “Nepal’s hydro industry has a unique position and readiness to contribute to reducing greenhouse gas in South Asia and beyond. This global interaction can only be mutually beneficial.” There are now 130 hydroelectric plants in Nepal delivering nearly 3,000MW, with another 240 plants under construction. Such an experience and a steep learning curve in a short development period has meant that the sector has proven that it can build hydro projects at speed and at a competitive price globally. Evidence of this is the trend towards Chinese contractors outsourcing some of their hydro engineering design work to Nepali engineering consultancies. The output and competitive consulting fees proves that Nepal’s engineering design is ready to do business globally. Nepal’s Energy Secretary Dinesh Ghimire told the Edinburgh gathering: “Made in Nepal can be a platform to share Nepal’s successes and tell the world that we are ready to do business by selling its hydropower building expertise.” Hydro Consult Engineering, a company with 30 years experience in Nepal promoted its services and capabilities in Edinburgh. It has completed projects in Pakistan, and two small new plants are in the pipeline in Kenya and Uganda. Hydro’s CEO Manohar Shrestha said: “We are excited with our international projects. They are challenging, but we are confident that these projects are a growth and learning opportunities for us.”  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20231106141148_586f173e596cfd0fd49f3822431958a9fea0fe59293a3fa431b1d357e452e27a.jpg" data-media-id="editor_1" data-image-id="20231106141148_586f173e596cfd0fd49f3822431958a9fea0fe59293a3fa431b1d357e452e27a" data-rendition-name="original" width="1600" height="1066" loading="lazy" alt="Hydro 2023"> <figcaption>Nepal Hydropower Association at Hydro23 conference in Edinburgh.</figcaption> </figure>  Conference organiser Alison Bartle publisher of the journal Hydropower and Dams said that the world is becoming aware of Nepal’s speed of advancement within the sector despite its geological and geopolitical challenges. “Nepal is fast becoming a hydro hub in the region,” she added. “We are especially happy that Nepal is cultivating cross border partnerships and exploring electricity trade with India and Bangladesh. It is a game changer.” Delegates said the next steps were for NHA and the Ministry of Energy, Water Resources and Irrigation to support the industry’s growth, and project Nepal was a model for successful energy transition at climate summits including at the COP 28 in Dubai this month.

Nepal's hydropower goes international

<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08219c7e80680e0a5ffejpeg.jpg" alt="" width="1024" height="595"/><figcaption>Pokhara on a clear autumn day. All photos: KRISHNA MANI BARAL</figcaption></figure>The once pristine Phewa Lake that used to reflect the majestic Annapurnas and Machhapuchre <a href="https://www.nepalitimes.com/banner/pokharas-shrinking-lakes/" target="_blank" rel="noopener noreferrer">is shrinking</a>, depriving Pokhara of its main attraction.Siltation from the river and streams feeding into it have reduced its area, the lake has become an urban garbage and sewage dumping site, and real estate speculators have encroached on the banks. Geologists have calculated that the lake accumulates more than 142,000 tonnes of sediment every year.Tourism-driven urbanisation and pollution mean that the famous lake is now devoid of its aquatic life, and there has been a visible decline in the number of <a href="https://www.nepalitimes.com/banner/the-great-trans-himalayan-bird-migration/" target="_blank" rel="noopener noreferrer">migratory birds</a> nesting here. Indicator insects such as <a href="https://www.nepalitimes.com/banner/night-of-the-firefly/" target="_blank" rel="noopener noreferrer">fireflies</a>, <a href="https://www.nepalitimes.com/banner/project-dragonfly/" target="_blank" rel="noopener noreferrer">dragonflies</a> and butterflies that depend on clean water sources have also started to vanish.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08239c7e80680e0a5fffjpeg.jpg" alt="" width="1600" height="1067"><figcaption>Parts of Phewa Lake have become an urban garbage and sewage dumping site.</figcaption></figure>But more worryingly, this important <a href="http://archive.nepalitimes.com/news.php?id=18976" target="_blank" rel="noopener noreferrer">wetland</a> in Pokhara and a major Ramsar site is shrinking rapidly due to increased sediment load due to haphazard building and road construction on the slopes above the lake.<a style="font-size: 15px; letter-spacing: 0.01em;" href="https://www.nepalitimes.com/latest/monsoon-hits-nepal-with-a-bang/" target="_blank" rel="noopener noreferrer">Unusually heavy monsoon downpours</a> last month in the Phewa watershed washed down silt into the lake, turning the water turbid brown, and submerging paddy fields in the river delta.In 1957, Phewa Lake was 1,119 hectares, but a survey earlier this year by Gandaki Province showed it had shrunk to 572 hectares. “At this rate, Phewa taal will be reduced to a mere pond in the next two decades,” says local Pame resident Shankar Aryal.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08269c7e80680e0a6000jpeg.jpg" alt="" width="2568" height="1584"><figcaption>The original extent of Phew Lake. It has shrunk by half today.</figcaption></figure>Phewa Lake was originally <a href="https://www.nepalitimes.com/latest/pokhara-six-decades-ago/" target="_blank" rel="noopener noreferrer">stretched as far west as Chankhapur, </a>and boats would go up to Pame to transport goods. Traders from as far as Parbat district used these boats to bring their produce to lakeside, transfer them to mules bound for Pokhara’s market. But with the extension of the road to Pame in 1994, people started using vehicles for transportation.What used to be a boat dock is now a swamp and has been filling up with sediment for the past two years. The land mafia has encroached further on the lake by using tipper trucks to dump soil on the lake to sell for new residential plots.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d082a9c7e80680e0a6001jpeg.jpg" alt="" width="2500" height="1667"><figcaption>Boats docked at the shore of Phew lakeside in Pokhara last week on water made turbid by sediments.</figcaption></figure>“Wetlands are the earth's kidneys, they filter water at the source, which then flows into the lake. Their deterioration and disappearance do not bode well for our water bodies and causes the lake to shrink further,” explains conservationist Raju Acharya.<a style="font-size: 15px; letter-spacing: 0.01em;" href="https://www.nepalitimes.com/here-now/nepal-braces-for-monsoon-pandemic-double-hit/" target="_blank" rel="noopener noreferrer">Irregular precipitation patterns due to the impact of the global climate crisis</a> have added to the problem. Pokhara receives the most rain in Nepal even at normal times. Earlier this month, it recorded 210mm of rain (10% of the annual average) in just 24 hours, bringing down huge quantities of sediment and raising the lake bed in the shallow shore near Chankhapur.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d082e9c7e80680e0a6002jpeg.jpg" alt="" width="1024" height="683"><figcaption>Much of what used to be Phewa Lake has already been turned into paddy fields as the lake shrinks.</figcaption></figure>On one hand, the rise in water level allowed for invasive species such as water hyacinth found on the mouth of the lake to spread further and clog up the fish cages, resulting in financial losses for local businesses.But <a href="https://www.nepalitimes.com/latest/heavier-than-usual-monsoon-in-nepal/" target="_blank" rel="noopener noreferrer">heavy, incessant rains</a> also bring in large amounts of deposits. Landslides in the catchment area flow through the Khare River and into the Harpan River, the main source of Phewa lake. This in turn raises the bed of the lake, which like Pokhara’s other lakes, were formed after a catastrophic flood 800 years ago on the Seti River after a landslide dam burst upstream, covering the valley in debris 100m deep.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08309c7e80680e0a6003jpeg.jpg" alt="" width="1024" height="683"><figcaption>The eastern edge of Phewa Lake has filled up with sediment, and this process is accelerating.</figcaption></figure>Much of what used to be Phewa Lake has already been turned into paddy fields as the lake shrinks. Pokhara Mayor Man Bahadur GC has vowed to clean up the lake and turn it back to its original condition. But his words have not been turned into action yet.Pokhara Metropolis with the Gandaki Province built <a href="https://www.nepalitimes.com/latest/pokhara-lake-lowered/" target="_blank" rel="noopener noreferrer">cofferdams and siltation ponds</a> last year to prevent soil and pebbles from the Harpan, Andheri River, Lauruk and Betayani Khola flowing in and then filling up the lake.But the check dam on Harpan Khola is already filled with sand and boulders from last month’s floods.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08339c7e80680e0a6004jpeg.jpg" alt="" width="1500" height="1000"><figcaption>Tourism-driven urbanisation and pollution have depleted Phewa's aquatic and bird life. Increased siltation due to haphazard road construction in the watershed has turned the water brown this monsoon.</figcaption></figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08369c7e80680e0a6005jpeg.jpg" alt="" width="1600" height="1067"><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d08399c7e80680e0a6006jpeg.jpg" alt="" width="1500" height="1000">A total of four dams were approved, their construction began in December 2019 and by July 2020 they were completed at Rs281.6 million. But even as they were under construction, locals and experts alike claimed that they were not strong enough to check the siltation.“The water flow is too strong and the dams are too shallow for them to be of much use,” says local resident Bishu Dahal. “But the project people didn’t even listen to the experts, so it has just been a waste of money.”<h2>How big is Phewa Lake? Depends whom you ask.</h2><figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221110151116/636d083d9c7e80680e0a6007jpeg.jpg" alt="" width="2600" height="1733"><figcaption>National and international surveyors have tried to calculate the exact area of Phewa Lake for the past 100 years, with different results.</figcaption></figure>Phewa Lake has a close to a century-long history of survey data from national and international experts to calculate its exact area:1924: British Survey of India 3.46 sq km1957: Survey of India 4.39 sq km1960: Nepal-India Support Mission 10.35 sq km1974: First Fort measurement 4.43 sq km1980: Nepal-UNDP Survey 5.80 sq km1994: IUCN Report 4.49 sq km2000: District Development Committee, Kaski 4.2. sq km2006: Pokhara Valley Urban Development Committee 5.03 sq km2011: Bishowoprakash Lamichanne Report 6.5 sq km2014: Ministry of Land Reform 5.07 sq km2020: Pokhara Metropolis 5.08 sq km2020: Gandaki Province Report 5.726 sq km

Pokhara’s shrinking Phewa Lake

<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022111015118/636d06359c7e80680e0a5f4ejpeg.jpg" alt="" width="1920" height="1080"/><figcaption>The Kosi Barrage on the Indian border where the river funnels out into the inland delta in Bihar.</figcaption></figure><ul><li>Three decades after it was first proposed, a 26.5km tunnel starts supplying water from Melamchi to Kathmandu.</li> <li>A <a href="https://www.nepalitimes.com/banner/drones-to-the-rescue-in-melamchi/" data-saferedirecturl="https://www.google.com/url?q=https://www.nepalitimes.com/banner/drones-to-the-rescue-in-melamchi/&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNEISH8LehEm5nAihrdyEOSDxSXsUg">deadly flood</a> on the Melamchi-Indrawati in Sindhupalchok on 16 June kills at least 27 people, and destroys infrastructure.</li> <li>The much-delayed 465MW Upper Tama Kosi hydropower plant starts feeding electricity to the national grid.</li> <li>SJVN says it has completed half the work on the 900MW Arun III project and the Investment Board awarded it another contract to develop the 679MW Lower Arun as well.</li> <li>Work has begun on the Sunkosi-Marin Diversion, to channel water to the Bagmati Basin and irrigate much of Province 2.</li></ul>All five events have one thing in common: they are all on the trans-boundary Kosi Basin that drains 75,000 sq km of territory in China, Nepal and India.Last week, I was standing on the Pati Bhanjyang ridgeline at the northeastern rim of Kathmandu Valley. Pour a glass of water on one side, and it flows westwards into the Gandaki River Basin. On the other side the streams drain into the Melamchi, which meets the Indrawati, then the Bhote Kosi to become the Sun Kosi that flows 200km eastward until it merges with the Arun and Tamor to form the Sapta Kosi.At that point, the river makes a tight turn south to tumble into the Kosi megafan in the Tarai and Bihar to finally to join the Ganga at Kursela. The Kosi, in fact, is the largest tributary of the Ganges, bigger than the Gandaki, Karnali, Jamuna, and even bigger than the Ganga itself as it debouches into the plains at Haridwar.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022111015118/636d06389c7e80680e0a5f4fjpeg.jpg" alt="" width="1920" height="1080"><figcaption> </figcaption></figure>The Kosi’s origin in Nepal is near Kathmandu. But it largest tributary, the Arun, originates in Tibet where it is called the Phung Chu, makes a mighty arc in Tibet and cuts through the Himalaya between Mt Makalu and Mt Kangchenjunga to meet its siblings Sun Kosi and Tamor at Tribeni.Geologists say rivers like the Arun that slice through the Himalaya are older than the mountains, and cut their way through as the terrain rose over millions of years with the collision of the India and Eurasian tectonic plates.The Kosi watershed therefore drains an enormous vertical landscape stretching from Mt Xixapangma which lies just 80km on the other side of the Himalaya in China, both sides of Mt Gauri Shankar (Chomo Tseringma), Mt Everest and Mt Makalu, as well as the western slopes of Kangchenjunga. Six of the world’s 13 peaks above 8,000m are therefore a part of the Kosi catchment.These mountains block the monsoons, and in eastern Nepal their southern slopes get more than 3,000mm of rain a year, weathering them down relentlessly, making the sedimentation load of the Kosi the heaviest for any river in the world.The topography of this mighty river has shaped Nepal’s history and culture, and can determine the country’s future prosperity as well. But only if we respect its geology, hydrology and the climate of its basin.Watershed expert Madhukar Upadhyay says, “We have not even begun to understand the hydrological and geological specificities of our mountains and rivers and yet are rushing headlong into ever-larger infrastructure development. Nepalis will still be here 500 years from now, what kind of country and landscape are we leaving behind for them?”Last month, landslides blocked the Melamchi-Indrawati, unleashing a deadly debris flow that destroyed infrastructure, homes and livelihoods. It imperilled <a href="https://www.nepalitimes.com/here-now/light-at-the-end-of-the-melamchi-tunnel/" data-saferedirecturl="https://www.google.com/url?q=https://www.nepalitimes.com/here-now/light-at-the-end-of-the-melamchi-tunnel/&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNEaXQ5HnjB92xgkbHBEnnbl5xiwow">the Melamchi project</a>, and its tunnel supplying water to Kathmandu was saved only because the gates were closed for maintenance just hours before the onrush.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022111015118/636d063c9c7e80680e0a5f50jpeg.jpg" alt="" width="1920" height="1080"><figcaption> </figcaption></figure>This week, the Upper Tama Kosi project started generating electricity, that will provide one-third of Nepal’s total power demand. But there was a scare just days before the inauguration: China informed Nepal that a massive landslide had blocked the river upstream, threatening the Rs55 billion project. Fortunately, the river found its way around the blockage. The near escapes of the Melamchi and Upper Tama Kosi sites make us take Upadhyay’s warnings seriously.Other <a href="https://www.nepalitimes.com/latest/monsoon-hits-nepal-with-a-bang/" data-saferedirecturl="https://www.google.com/url?q=https://www.nepalitimes.com/latest/monsoon-hits-nepal-with-a-bang/&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNHkbbDluGypXbbgC1BQxVAVndFTvA">flash floods this year </a>in Manang, Kaski and Lamjung also showed that while our rivers hold great promise, we ignore the risk to settlements and major infrastructure along their banks. Our engineering methods have been inherited from the West, and do not account for cloudbursts and extreme Himalayan weather events. All these risks have been exacerbated by climate change.In Melamchi, the power of the flood last month is evident in the steel hulk of the Indrawati Bridge that lies crumpled in the muddy river 100m downstream amidst room-sized boulders. The new sand bank is 25m thick, indicating the flood’s maximum height.It is not clear what happened, for a bishyari or two (bursting of a landslide-damming of the river) would not be enough to generate such a massive debris flow. Some speculate there may have been centuries-old glacial deposits which suddenly got released through a combination of earthquake weakening and heavy rain.We also saw that <a href="https://www.nepalitimes.com/banner/after-the-deluge-in-nepal/" data-saferedirecturl="https://www.google.com/url?q=https://www.nepalitimes.com/banner/after-the-deluge-in-nepal/&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNFAaYeK5lUf9eY4-j8mOHnFIUOT5A">Melamchi Bazar </a>had expanded into the river’s flood plain, with buildings in place of rice paddies, which added to the loss of life and property. Less than a month after the disaster excavators and tipper trucks are already on the Indrawati river bed, scooping up sand and boulders to feed Kathmandu Valley’s voracious appetite for construction material.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022111015118/636d06409c7e80680e0a5f51jpeg.jpg" alt="" width="1920" height="1080"><figcaption> </figcaption></figure>It is the Kosi’s Melamchi tributary that augments Kathmandu’s water supply, while the sand and boulders from the Indrawati, Sun Kosi, Bhote Kosi and Rosi fulfil the Valley’s demand for sand and aggregates.While earthquakes, floods and landslides are seen as ‘natural disasters’, and indeed they are to some extent, they become ‘man-made’ calamities with unregulated sand-mining of rivers, quarrying on steep slopes, and haphazard road-building.The highway along the Indrawati is crowded with sand-laden tipper trucks bound for Kathmandu. Downstream towards the Kosi Barrage along the BP Highway, the road follows the river past the site where a part of the Sun Kosi is to be channeled through a 13km tunnel to irrigate farmlands in the Tarai of Province 2. A similar inter-basin diversion scheme on the Kali Gandaki is now pitting Gandaki vs Lumbini Province, and the central government.We finally get to the new bridge across the Sapta Kosi at Chhatara, connecting Udayapur and Sunsari districts. This is exactly the point where, after its epic journey from the Tibetan Plateau and between the highest mountains in the world, this great river fans out into the plains.https://youtu.be/34lmOgPv-zkNorth of the bridge is the site of the proposed mammoth <a href="http://archive.nepalitimes.com/news.php?id=2413#.YOQRoi8RoWo" data-saferedirecturl="https://www.google.com/url?q=http://archive.nepalitimes.com/news.php?id%3D2413%23.YOQRoi8RoWo&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNF86VG9E0i8u5OqfG5NvKJKILpBEA">Kosi High Dam</a>. The 300m high dam will create a reservoir submerging huge tracts of the Sun Kosi, Arun and Tamor Valleys in a kind of ‘trishul’. India needs the dam for flood control, and to facilitate inland navigation by storing monsoon water and discharging it in the dry season. But there are many questions regarding the proposed mega project.To begin with, the high silt load means that a future Kosi Reservoir would soon fill up with sediment. There are alternatives to dams: people in the Kosi plains have learnt to live with annual floods which deposit valuable soil nutrients, and diverting water through earlier river channels would ease flood impact.The village of Hanuman Nagar had to be relocated because of the barrage, and 60 years later some of its families and those further upstream have still not got compensated. The barrage also destroyed an important wetland, and <a href="https://www.nepalitimes.com/banner/the-great-trans-himalayan-bird-migration/" data-saferedirecturl="https://www.google.com/url?q=https://www.nepalitimes.com/banner/the-great-trans-himalayan-bird-migration/&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNFOCjdWAUhLv8LM1mLEnBNbFZeVHQ">migratory birds </a>now alight in <a href="http://archive.nepalitimes.com/news.php?id=15974#.YOQSqy8RoWo" data-saferedirecturl="https://www.google.com/url?q=http://archive.nepalitimes.com/news.php?id%3D15974%23.YOQSqy8RoWo&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNH9ndET9JXr1SU0_SRmfnAXaLeZ5A">Kosi Tappu Wildlife Reserve</a> instead.Extending the reserve further north and south could increase the habitat of endangered arna, wild elephants and freshwater dolphins, encourage ecotourism, and provide income to villagers whose grandparents had to move.The 60-year-old embankments that jacket the Kosi upstream and downstream from the Barrage have created the potential for a massive future disaster, an inland tsunami. Because of the river’s heavy silt content, the Kosi now flows on a deck 3-4m above the surrounding land. <a href="http://archive.nepalitimes.com/news.php?id=15163#.YOQR6y8RoWo" data-saferedirecturl="https://www.google.com/url?q=http://archive.nepalitimes.com/news.php?id%3D15163%23.YOQR6y8RoWo&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNELQRpfAALk_H4uMYlUohTJDiWrQg">In 2008, the Kosi breached the eastern embankment </a>at Kusaha, causing <a href="http://archive.nepalitimes.com/news.php?id=15193#.YOQTGy8RoWo" data-saferedirecturl="https://www.google.com/url?q=http://archive.nepalitimes.com/news.php?id%3D15193%23.YOQTGy8RoWo&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNGQbFvez-8I6Bv7_rYVwfQpczaNAg">destruction </a>downstream in Sunsari and Bihar. And that was when the river was not even in spate.<figure><img src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022111015118/636d06439c7e80680e0a5f52jpeg.jpg" alt="" width="1920" height="1080"><figcaption> </figcaption></figure>With extreme weather caused by climate change, or a confluence of cloud-bursts in the mountain catchment, <a href="http://archive.nepalitimes.com/news.php?id=3526#.YOQSOy8RoWo" data-saferedirecturl="https://www.google.com/url?q=http://archive.nepalitimes.com/news.php?id%3D3526%23.YOQSOy8RoWo&amp;source=gmail&amp;ust=1625725666191000&amp;usg=AFQjCNEvH8AZlBKUPb68a4OulBhpsm0Q2w">a record-breaking flood in future</a> could cause an engorged Kosi to bypass the barrage altogether and unleash a catastrophic flood downstream.The Kosi Barrage was meant to be a temporary solution, and the Kosi High Dam was always in the minds of the Indian authorities. There is a need for transparent and independent study by water experts, social scientists and technocrats to study the pros and cons of the Kosi High Dam.Siltation, seismicity, adaptation and mitigation, all need to be factored in with projected future climate impact. Meanwhile, across the world, ecologists are warning that the price to pay for large dams is too great because of the destruction of river ecosystems.A massive rockfill dam on a seismically active zone, the geopolitical implications as well as the social and environmental costs may outweigh the planned benefits. To make up for the mistake of the Kosi Barrage, we may be making an even greater blunder with the Kosi High Dam.

The Kosi’s sorrow, and scope

This is the first instalment in a new limited series in Nepali Times on the historic transportation infrastructures of Nepal. Nepal’s Forest Railways As<a href="https://nepalitimes.com/here-now/india-s-border-trains-that-connected-nepal"> India’s railway network </a>expanded in the 1890s and 1900s, the demand for wooden railway sleepers, called ‘ties’ in America, likewise increased. The <a href="https://archive.nepalitimes.com/article/Nepali-Times-Buzz/the-rana-reign-a-recap-of-history,3751">Rana regime</a> realised that western Nepal’s dense forests, from which sal trees could be extracted and sold, represented a valuable source of revenue. There was a problem of accessing large tracts of <a href="https://nepalitimes.com/here-now/the-tarai-s-shrinking-forests">Tarai forests</a>. However, once Indian railway lines are extended to Nepal’s border in several places, this issue could be resolved by constructing logging railways, also known as ‘tramways’ or ‘light railways’. The Nepal Government awarded a contract to Punjabi timber contractors to supply 15,000 sal sleepers to Chandan Chauki station of India’s Oudh &amp; Rohilkhand State Railway in 1908. The contractors also received a concession to construct a steam tramway to run 48km into <a href="https://nepalitimes.com/banner/reviving-nepals-community-forestry-success-story">Nepal’s forests</a> for cutting and transporting trees. The author found no records, however, indicating that such an ambitious tramway was built in 1908. The hewn logs were probably carried into India by bullock carts or <a href="https://nepalitimes.com/news/elephants-become-white-elephants">elephants</a>. The earliest known forest railway in Nepal was built in 1914 in the southwestern corner of the present-day Parsa district. A British engineer went to the Indian border town of Bikna Thori to plan a 4-mile portable light railway for the transport of timber from <a href="https://nepalitimes.com/here-now/on-the-tri-junction-of-wildlife-conservation-conflict-and-co-existence">the forest of Chitwan </a>to the Thori depot on the Bengal &amp; Northwestern Railway. This short line was laid upon wooden sleepers, and its rails could be taken up and repositioned when logging in one section of the forest was completed. This forest railway was in operation at least through 1917.&nbsp; A few year down the line in 1923, J V Collier of the Indian Forest Service built a narrow-gauge railway in Kailali district also to export of timber to India. This line, the Nepal Government Forest Railway, departed Chandan Chauki in Uttar Pradesh and ran 48km northwest into Nepal.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250824150820_84ddef57433c2f847b2c7e56c2d9c924084b6e6a504bbca905d2c593fac8eabd.jpg" data-media-id="editor_6" data-image-id="20250824150820_84ddef57433c2f847b2c7e56c2d9c924084b6e6a504bbca905d2c593fac8eabd" data-rendition-name="original" width="1130" height="689" loading="lazy" alt="Nepal's little railways"> <figcaption>A Nepal Government Forest train in Kailali District hauling sal sleepers in 1925. Photo: DAVID CHURCHILL </figcaption> </figure>  It was a 2-foot railway supported by 11kg rails. The line was ‘temporary’ in that as sal trees were thinned out in one area, railway tracks were shifted to uncut areas of the forest. The railway crossed seven small <a href="https://nepalitimes.com/here-now/saving-what-is-left-of-himalayan-rivers">rivers</a>, but the bridges were taken down during the summer and monsoon. Trains ran only from November to April. This forest railway purchased four 4-6-0T ‘tank’ engines built in Leeds, England. Each bogie could carry 100 broad-gauge sleepers, and two engines were needed to haul a 21-car train loaded with 2,100 sleepers. This huge commercial forest operation once employed about 14,000 men, most of them Indians. During one season, nearly 800,000 broad and metre-gauge sleepers were exported to India. When India suffered a depression in 1930, large scale operations came to an end. Read also: <a href="https://nepalitimes.com/news/rust-in-peace?fbclid=IwAR1_eg88TCOS6RGRW1af7WvaWx5mzh_rY8-vT1MnJxSs41QtCpaA988oXk8">Rust in peace</a>, Daniel W Edwards  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250824150828_13a0b894b9ea0c478904d358028f0c976d84f284432ee25106787366598d38e5.jpg" data-media-id="editor_9" data-image-id="20250824150828_13a0b894b9ea0c478904d358028f0c976d84f284432ee25106787366598d38e5" data-rendition-name="original" width="6000" height="4000" loading="lazy" alt="Nepal's railways"> <figcaption>Rails extended north from this spot into the virgin sal forests of Bardia in western Nepal 100 years ago.  DANIEL W EDWARDS</figcaption> </figure>  A third railway was built in <a href="https://nepalitimes.com/here-now/the-big-bulls-of-bardia">Bardia </a>where some scattered rails and signs of an old roadbed were seen in the 1960s. It ran from Nishangada in India to Khairbhatti in Nepal. From there, stations heading south were Ranipur, Karmak, Taratal and Madhuwan. Collier likely <a href="https://nepalitimes.com/here-now/nepal-train-project-struggles-to-stay-on-track">built this railway </a>as well in the 1920s. An elderly man in Bardia in 2022, whose father had worked on this forest railway, was interviewed for this account. Kathmandu Valley’s Motor (Trolley) Railway Merchants importing goods from India via the<a href="https://archive.nepalitimes.com/article/business/ropeways-connecting-nepal,1749"> ropeway</a> Chandra Shamsher built in 1927 had to go to the ropeway’s terminus at Matatirtha near Thankot to claim their goods and then haul them 6km to the customs house Bhansar Adda at Teku for clearance and payment of customs duties. The Motor Railway was built to carry goods from the<a href="https://archive.nepalitimes.com/news.php?id=16839"> ropeway station </a>directly to the customs office, making it cheaper and more convenient for merchants to receive their shipments. In December 1931, Prime Minister Bhim Shamsher issued an order (sanad) putting Lt Gen Singha Shamsher Rana in charge of building this rail line to Teku and on to ‘Nabalak Khana’ in Tripureswar, a distance of 10km. The project was subdivided into four sections or ‘phant’, and for each, budgets and timelines were established. There was bato phant (constructing the roadbed), lik sleeper and jordne phant (laying sleepers and joining the rails), culvert phant (installing culverts) and pul phant (building bridges). Colonel Kishore Narsingh Rana was put in charge of the sleeper and rail section, while Colonel Dilli Jung Thapa, an engineer at Ghar Kaj Adda, also was involved. The Motor Railway was completed by the end of 1933. In the beginning, the railway’s small wagons may have been pulled and pushed by men and bullocks. However, in 1938 a British railway manufacturer sent Nepal a four-wheel, 5½ ton, 2-foot narrow-gauge diesel-powered locomotive with mechanical transmission, hence the name motor railway. Read also: <a href="https://nepalitimes.com/latest/nepal-railways-janakpur-test-drive?fb_comment_id=3554227181262227_4263866616964943">Nepal Railways Janakpur test drive</a> Leaving Matatirtha, the trains passed Satungal, Naikap, the Bishnudevi Temple, crossed an iron bridge over Balkhu Khola, then to Ghattepakha, Sunagau, through what is now a section of Kuleshwor (‘Lik Marg’) to the Customs Office at Teku.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250825020852_033f0cee9775d7dadde7811132f84da876f614c386e3677e560ba7aed79909d9.jpg" data-media-id="editor_15" data-image-id="20250825020852_033f0cee9775d7dadde7811132f84da876f614c386e3677e560ba7aed79909d9" data-rendition-name="original" width="2000" height="1333" loading="lazy" alt="railways in Nepal"> <figcaption>Lik Marg in Kuleswor, the former route of the Motor Trolley Railway. Photo: DANIEL W EDWARDS</figcaption> </figure>  In 1945, Motor Trolley had four engines, but spare parts was badly needed. The charge for transporting one maund (about 40kg) of cargo from Matatirtha to Teku was 50 paisa. Even though the trains ran slowly and only for a short distance, <a href="https://nepalitimes.com/news/fatalism-and-fatalities">accidents were not unknown</a>. A train loaded with rice, salt and cotton derailed on a curve in July 1946, and two railway employees were crushed under the cars and killed, five others were injured. Besides the driver and a brakeman, guards rode the trains to prevent theft of goods.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250824150836_63a327d4db3b067a23dd5c6cf17a31ffe811ffd4a8429bc31011d62298a90060.jpg" data-media-id="editor_17" data-image-id="20250824150836_63a327d4db3b067a23dd5c6cf17a31ffe811ffd4a8429bc31011d62298a90060" data-rendition-name="original" width="6000" height="4000" loading="lazy" alt="Nepal's railways"> <figcaption>The author by the remains of the Balkhu Khola bridge built in 1932 with American steel. Photo: JEEVAN NEPAL</figcaption> </figure>  By 1953, government budget estimates indicated the Motor Railway would break even with an income of Rs70,000 against Rs71,000 in expenditure. It appears the railway stopped service around 1957 with the opening of the Raj Path and the extension of the ropeway from Matatirtha to Bhansar Adda. Bent steel beams of the bridge across Balkhu Khola and two plaques recovered from the river a few years ago are the only remains of this railway today. Photos of the Motor Trolley Railway in operation are hard to come by.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250825020848_3a7cd17d0ffc36bbf5fdad404f5f6e91c7aa0e4f4ed729ed2c7e9c186f32ca9b.jpg" data-media-id="editor_18" data-image-id="20250825020848_3a7cd17d0ffc36bbf5fdad404f5f6e91c7aa0e4f4ed729ed2c7e9c186f32ca9b" data-rendition-name="original" width="5189" height="1979" loading="lazy" alt="railways in Nepal"> <figcaption>Steel plaque commemorating the construction of a Motor Trolley bridge across the Balkhu Khola. Photo: DANIEL W EDWARDS</figcaption> </figure>  The Kosi Project Railway (KPR) As early as 1941, India and Nepal considered building a dam on<a href="https://nepalitimes.com/here-now/the-kosi-s-sorrow-and-scope"> the Kosi River</a> to prevent destructive floods caused by <a href="https://nepalitimes.com/editorial/when-it-rains-it-pours-ksqprbu3">monsoon rains</a>. Floods in 1950 inundated 500 villages in Bihar and left 500,000 people homeless. The two governments signed an agreement in 1954 to build a barrage on the Kosi, and King Mahendra and Prime Minister Nehru laid the foundation stone in April 1959. To transport stones from a quarry near Dharan to use in mixing concrete at the construction site, the Indian government, in charge of building the barrage, made plans to build a narrow-gauge railway linking Bihar and its border town of Bhimnagar with Nepal’s settlements at Chakraghatti, Chatra and Ghopa, the outskirts of Dharan.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250824150816_fc5e13b01022c63c64f1e83589da0015eee7ecd002bdd3d97b88c98c1f3d45b7.jpg" data-media-id="editor_21" data-image-id="20250824150816_fc5e13b01022c63c64f1e83589da0015eee7ecd002bdd3d97b88c98c1f3d45b7" data-rendition-name="original" width="4011" height="2645" loading="lazy" alt="Nepal's railways"> <figcaption>Steel plaque commemorating the construction of a Motor Trolley bridge across the Balkhu Khola. Photo: DANIEL W EDWARDS</figcaption> </figure>  The section of the KPR in Nepal totaled 66km — the country’s longest railway to date. The stations south of Chakraghatti were Rajabas, Maduhuwan, Kushaha, Haripur and Bhantabari. The line built, operated and owned by the Indian Government, was opened in 1958 and known locally as Dhunge (stone) Rail. Procuring locomotives, wagons and other materials was a challenge. India’s Railway Board searched the country for old 41 lb rails, and located steam engines, most built around 1910, in poor condition, and stored in ‘retirement’. These decrepit locomotives were later cannibalised for parts to keep the remaining engines running, and six newer locomotives built in Yugoslavia were sent to the KPR in 1960 to prevent the railway from shutting down and halting construction of the barrage.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250824150832_fd644f9e2674c5047a531de5dfeb2c8860b0f93dddc7a2df3db867bf31b2c94b.bmp" data-media-id="editor_22" data-image-id="20250824150832_fd644f9e2674c5047a531de5dfeb2c8860b0f93dddc7a2df3db867bf31b2c94b" data-rendition-name="original" width="3171" height="2069" loading="lazy" alt="Nepal's railways"> <figcaption>KPR locomotives, water tank and staff at Chakraghatti in Nepal. Photo: JOHN BENSON</figcaption> </figure>  Used bogie-wagons (gondolas) came from <a href="https://nepalitimes.com/here-now/india-nepal-rail-diplomacy">Indian railways</a> that had been converted to metre-gauge, others were manufactured in Muzaffarpur without couplers due to the non-availability of steel. A hundred new wagons arrived from Japan, but only half could be put in service, as couplers from the other 50 were removed and attached to the Muzaffarpur wagons. This smorgasbord of equipment kept shop mechanics and work crews busy, but now-abandoned railways in Nepal always operated under less-than-ideal conditions. Although the purpose of the KPR was to transport gravel, stones and boulders to the site of the barrage, photographs show people riding in loaded wagons. Excluding Dharan, there was no bus service through the wild animal infested jungle between Dharan and Chakraghatti or along the dusty paths linking other small villages on the KPR, so patient locals sat in wagons at Dharan, waiting perhaps for hours for trains to depart.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250825020852_7d011dcc8e9b8cb0fe745b352486ebc4a84dac99419eadb35875333db20837c6.jpg" data-media-id="editor_24" data-image-id="20250825020852_7d011dcc8e9b8cb0fe745b352486ebc4a84dac99419eadb35875333db20837c6" data-rendition-name="original" width="3965" height="2659" loading="lazy" alt="railways in Nepal"> <figcaption>Ticketless riders on a train of gravel and stones in the forest between Dharan and Chakragatti in 1966. Photo: JOHN BENSON</figcaption> </figure>  Sons of former railway workers in Chakraghatti say that there were no fixed schedules, three or four trains ran both ways daily in the early 1960s. Southbound trains carried gravel, stones and boulders, while northbound trains would carry coal, cement and provisions, including sacks of coins to pay the workers. Trains even ran at night, and the crews worked long hours. Workers received free housing in project-built tenements but had to buy food supplies and items for personal use. The Babu Saheb or the superintendent lived at Chakraghatti, and at one time supervised more than 1,000 employees, nearly all of them from India. The barrage was completed in 1964, but by 1970, the Kosi Project Railway had passed into history. Daniel W Edwards was a Peace Corps volunteer in 1966 and is the author of several books on Nepal.

Nepal’s five little railways

· &nbsp;At least 400 people are dead or missing after heavy rainfall lashed arid regions of northwestern Pakistan. Walls of mud and boulders engulfed entire villages in Khyber Pakhtunkhwa Province. More than 700 people have been killed in floods in Pakistan since June.&nbsp; · &nbsp;Over in India’s Jammu and Kashmir at the same time, multiple slurry floods on 17-18 August killed more than 80 people · A mudslide possibly caused by a glacial collapse upstream in Uttarakhand on 5 August nearly wiped the village of Dharali off the map. At least 70 people, 23 of them Nepalis are dead or missing. · On the night of 8 July, <a href="https://nepalitimes.com/news/rasuwa-flood-likely-a-glof">glacial lakes in Tibet overflowed</a>. By dawn the mudflow had demolished the Nepal-China border bridge killing at least 11 people, destroyed hydropower plants, swept away bridges, roads, over 100 cargo trucks and newly imported electric vehicles. All these disasters have a common thread: a cascade of hazards caused by record-breaking rainfall on fragile Himalayan slopes destabilised by melting glaciers and permafrost, seismicity and poorly engineered infrastructure. They are called ‘rain bombs’ — a heavy localised downpour measuring more than 100mm/h on a steep mountainside. As global warming heats the atmosphere, warmer air can hold more water vapour. The heavy rain then falls where there should be snowfall: on moraines and slopes that have lost the permafrost adhesive that held the debris together. “Increasingly, there is now more rainfall at higher altitudes where there used to be snowfall previously, and this directly impacts loose material in that fragile landscape which moves down,” explains Mohan B Chand, a Himalayan Glaciologist at Kathmandu University. “Moreover, the rains these days are heavy and fall within a few hours. So even a small burst has bigger impact.” The <a href="https://nepalitimes.com/banner/drones-to-the-rescue-in-melamchi">2021 Melamchi flood</a> and the <a href="https://nepalitimes.com/news/sikkim-flood-is-warning-to-nepal">Sikkim disaster in 2023</a> have been attributed to record-breaking torrential rain on a glacial moraine that collapsed, unleashing a catastrophic debris flow.&nbsp; The Bhote Kosi flood this year happened even without torrential rain, and originated at rapidly expanding supraglacial lakes that overflowed, similar to what happened on the Mendenhall Galcier in Alaska last week. In Uttarakhand, the trigger could be in the upper catchment cryosphere, or a landslide dammed lake. Basanta Raj Adhikari of the Centre for Disaster Studies at the Institute of Engineering also calls them ‘sediment bombs’. He clarifies: “There is lots of sediment up there from landslides or glacial activity, and when there is heavy rainfall and hotter temperature, they are unleashed downstream. One thing is for sure, these extreme events are getting more frequent and more destructive.” Researcher Alton C Byers who has studied melting glaciers in the Himalaya and Andes names the eight most potentially dangerous glacial lakes in Nepal: Lower Barun, Chamlang North Tso, Chamlang South Tso, Dig Tso which burst in 1984, Lumding Tso, Thulagi, Tso Rolpa and Imja Tso (see map).  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250822030844_70b3bf6a1ad9b9f9481c9af860629b2a05ac1338a3b89a831506f1c6bdddf5ec.jpg" data-media-id="editor_3" data-image-id="20250822030844_70b3bf6a1ad9b9f9481c9af860629b2a05ac1338a3b89a831506f1c6bdddf5ec" data-rendition-name="original" width="522" height="557" loading="lazy" alt="high risk glacial lakes in Nepal"> </figure>  Of these, Tso Rolpa and Imja have been lowered by 3m each, while Thulagi, Lower Barun, Lumding Tsho, and Hongu 2 glacial lakes have been targeted for lowering by the Department of Hydrology and Meteorology as part of the recent Green Climate Fund grant of <a href="https://nepalitimes.com/here-now/meltpools-in-the-himalaya" target="_blank">$36.1 million awarded to Nepal</a>. “These lakes have changed over the years as their debris-covered glaciers continue to recede,” Byers told Nepali Times. “When water volume in the lake basin increases, they become more vulnerable to flood triggers such as overhanging ice as glaciers recede further to their headwalls, and permafrost on their moraines continues to melt.” <h2>These are not ‘natural disasters’</h2> Scientists have given the current planetary epoch a name: the Anthropocene. And anthropogenic causes in this era heighten the risk of disasters. Indeed, an analysis of recent Himalayan calamities (page 1) shows that there is much more at play here than climate breakdown. Haphazard encroachment of floodplains, quarrying and crusher activity exacerbated the effect of <a href="https://nepalitimes.com/editorial/when-it-rains-it-pours-ksqprbu3">extreme rainfall on 28 September around Kathmandu Valley</a> that killed 200 people. The human cost of the 5 August catastrophe in Uttarakhand would have been high in any case, but the fact that the tiny village had expanded across a vulnerable alluvial fan to cater to a tourism boom meant more death and destruction. There are similar alluvial fans across Nepal, where small towns have expanded because new highways follow rivers, like Beni located at the confluence of the Myagdi Khola and Kali Gandaki. Other towns like Kagbeni or Damauli are located on the banks of rivers and tributaries that are directly downstream from rapidly expanding glacial lakes or unstable mountains. “In Butwal, people are building houses on the floodplain of the Tinau River, and yet people blame climate change or rainfall when there is a disaster,” says Basanta Raj Adhikari at the Institute of Engineering. “This is happening all over the country. Imagine the kind of devastation Beni would suffer if there was a big flood.”  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250822030848_ed411f8618c7a411ed4c165e91f3b880abb085a8a511405710dd8220f657da84.jpg" data-media-id="editor_6" data-image-id="20250822030848_ed411f8618c7a411ed4c165e91f3b880abb085a8a511405710dd8220f657da84" data-rendition-name="original" width="1200" height="800" loading="lazy" alt="Beni Bazar"> <figcaption>RISKY CONFLUENCE: Beni has expanded rapidly after the highway to Mustang was built. But the town is situated on the alluvial fan of past flash floods on both the Kali Gandaki and Myagdi Khola which have dangerous glacial lakes in their upper catchment. Photo: BENI TOURISM</figcaption> </figure>  Traditionally, Nepal’s villages and settlements were located high above rivers because our forebears learnt lessons from recurring flash floods. Now, the road network follows rivers, and towns have sprung up along these highways. Even when roads are not on river banks, many gouge out slopes above, unleashing massive landslides that block rivers. Experts say Nepal’s hazard map should now be updated for glacial outbursts so municipalities can plan risk-sensitive land use zoning. This &nbsp;must go hand-in-hand with measures to reduce the risk by structural mitigation, such as engineering and construction, and then with risk awareness and early-warning systems. Says Himalayan researcher Alton C Byers: “Sooner or later, communities will realise that certain sites are simply no longer safe for a village or city, especially because of climate change in the mountains. The Himalaya has always been high-risk with its steep slopes, thin soil, monsoon rainfall regime, and frequent seismic activity. So, some places are no longer safe to live in.” Mohan B Chand of Kathmandu University adds that <a href="https://nepalitimes.com/banner/climate-smarter-himalayan-infrastructure">hazard mapping is especially crucial for expensive hydropower plants</a>: “Most of these are on snow-fed rivers, but environmental risk assessment is not taken seriously.” He says that because Nepal is set to generate 28,500MW by 2035 to meet its carbon neutral target, the government must work to minimise upstream risk by integrating disaster mitigation components in new energy investments. Few know that Nepal’s first hazard mapping was done 40 years ago in the Khumbu with a United Nations University study titled ‘Highland Lowland Interactive Systems’. It is hard to find that document anywhere. Today, hazard mapping technologies, satellite remote sensing, drones, synthetic aperture radar (SAR) and modelling with AI have made it much easier to integrate multi-hazard risk assessment. That data needs to be made available to local governments so they can plan. Cell phones and new apps that monitor real-time glacial lake levels, live precipitation and hydrological data, and local weather forecasts can make early warning systems more effective. Recent disasters have shown that even the smallest of glacial lakes that are rarely considered in risk assessments can cause much damage. Langmale Lake in the Barun Valley was less than 0.1 km2 in size, but <a href="https://nepalitimes.com/here-now/nepal-s-mountains-are-melting" target="_blank">the flood in 2017</a> caused extensive downstream damage. The 2012 Seti flood in Pokhara, the Chamoli disaster in Uttarakhand in 2021, the South Lhonak proglacial lake burst in Sikkim in 2023 that washed away the $1.7 billion Chungthang Teesta III Project, and the August 2024 floods above Thame in Khumbu are other recent examples.&nbsp; Byers thinks some of these floods may have been initially triggered by massive rockfall or moraine collapse related to <a href="https://nepalitimes.com/multimedia/the-not-so-permanent-frost" target="_blank">melting permafrost</a>. The size of a glacial lake alone does not determine the severity of destruction. What makes all the difference is downstream development, and if there pre-warning. Dig Tso in Khumbu which burst in 1984, was much larger than the lake that caused the Bhote Kosi flood in July, but the economic cost to the country of the trans-boundary disaster this year was much higher. Says glaciologist Chand: “We have to monitor the lakes, not just via remote sensing but with field visits. These may be costly, but mitigating the risk is less expensive than the disasters themselves.” Nepal has the technology and trained personnel to do hazard mapping, monitoring, and to design early warning apps. That data and information now needs to be available to all three levels of government to improve preparedness and risk reduction. “The cascading and compounding hazards are increasing in the Himalaya, this must be the subject of our research now,” says Adhikari at the Centre for Disaster Studies. “Recent events are a wake-up call, if we do not take this seriously things may be more dangerous in future.”

Rain bombs

The cost of preserving Nepal’s past

Turkish Airlines is official airline partner for the second edition of the Vatsalya Everest Women’s Volleyball League (EWV). The league, scheduled for 5-13 September, will take place in Pokhara and feature 18 international players alongside elite Nepali volleyball talent. The agreement was signed by Turkish General Manager Serkan Başar, and EWV CEO Snevy Chapagain. “Turkish Airlines’ support ensures a seamless journey and adds immense prestige to the league’s goal of women’s empowerment through sports as well as the agenda of sports tourism,” said Chapagain. “We are thrilled to partner with Vatsalya Everest Women’s Volleyball League as the official airline. With this association, we aim to support women role models in sports. We believe this association will connect countries to Nepali volleyball,” remarked Basar.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250825030844_36df66612152abbea71f15579358a2bb0fe797f21cbe7e7c7f28e3fe91655ae4.jpg" data-media-id="editor_0" data-image-id="20250825030844_36df66612152abbea71f15579358a2bb0fe797f21cbe7e7c7f28e3fe91655ae4" data-rendition-name="original" width="1920" height="1280" loading="lazy" alt="Turkish"> </figure>

dams