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Landslide Damming (Nepal)
Landslides are triggered in Nepal due to a combination of steep mountains and unstable soils. The risk of the landslide is high in the monsoon season due to the lubrication of soil in the slope by moisture. Another important factor triggering the landslide is earthquakes. When landslide occurs near the river, it can block the river causing a damming effect. Damming could also occur due to rock-slides. Such dams are unstable and can cause flooding if not breached in controlled manner. Below is a list of dams formed due to landslides and their impacts in Nepal Annually, 593 natural disaster occurs in average and quite a few of them are related to the damming by landslides and about 13% of fatality is directly related to the landslide and Landslides Dammed Outburst Flood (LDOF). List of landslide dams *1988 September, Myagdi river: The rockslide in Darbang region of Myagdi river killed 109 people and dammed the river. *2012 May, Seti River: The location of dam is about 25 km fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslides Dammed Outburst Flood
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the shear strength of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1988 Darbang Rockslide
At 11:00 p.m. on 20 September 1988, a huge rockslide occurred in the Darbang region of Nepal. The landslide killed 109 people and buried all the houses in the right bank of the river. The volume of landslide was estimated to be about 5 million cubic meters with a dimension of about 750m high ranging from the elevation of 1750 to 1000 m and width of 500m. The debris dammed the Myagdi river for three hours. The debris was gradually eroded by the river without causing flooding in the downstream region. The cause of slide is not known clearly because there was no rainfall in the area during the landslide period or any earthquake. However, about a month earlier, an earthquake of 6.7 Richter scale The Richter scale —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale—is a measure of the strength of earthquakes, developed by Charles Francis Richter and presented in his landmark 1935 ... had occurred in eastern Nepal. About ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seti River
The Seti River is an important tributary of the Karnali system that drains western Nepal. Course The Seti originates from the snow fields and glaciers around the twin peaks of Api and Nampa in the south facing slopes of the main Himalayas. The area is near the trijunction of the borders of Nepal, India (Kumaon, Uttarakhand), and China (Tibet). The river first flows in a south-easterly direction, then turns and flows in a south-westerly and finally south-easterly again before joining the Karnali or Ghagra River. It has cut a spectacular gorge across the Mahabharat Range The Lower Himalayan Range ( ne, पर्वत शृङ्खला parbat shrinkhalā) – also called the Middle Himalayas or Lesser Himalayas or Himachal – is a major east–west mountain range with elevations 3,700 to 4,500 m (12,000 to ... and appears to be lost amongst caves and tunnels for a short distance. References Rivers of Sudurpashchim Province Ghaghara {{Nepal-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pokhara
Pokhara ( ne, पोखरा, ) is a metropolis, metropolitan city in Nepal, which serves as the capital of Gandaki Province. It is the List of cities in Nepal, second most populous city of Nepal after Kathmandu, with 518,452 inhabitants living in 101,669 households in 2021 Nepal census, 2021. It is the country's largest metropolitan city in terms of area. The city also serves as the headquarters of Kaski District. Pokhara is located west of the capital, Kathmandu. The city is on the shore of Phewa Lake, and sits at an elevation of approximately 822m. The Annapurna Range, with three out of the ten highest peaks in the world—Dhaulagiri, Annapurna, Annapurna I and Manaslu—is within of the valley. Pokhara is considered the tourism capital of Nepal, being a base for trekkers undertaking the Annapurna Circuit through the Annapurna Conservation Area region of the Annapurna ranges in the Himalayas. The city is also home to many of the elite Gurkha soldiers, soldiers native to So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sunkoshi River
The Sunkoshi, also spelt Sunkosi, is a river of Nepal that is part of the Koshi or Saptkoshi River system in Nepal. Sunkoshi has two source streams, one that arises within Nepal in Choukati, and the other more significant stream that flows in from Nyalam County in the Tibet region of China. (See especially Figure 1). The latter is called Bhote Koshi in Nepal and Matsang Tsangpo in Tibet. Due to the significant flows from Bhote Koshi, the Sun Koshi river basin is often regarded as a trans-border river basin. River course The Sunkoshi's headwaters are located in the Zhangzangbo Glacier in Tibet.Mool, P. K.; Joshi, S. P.; Bajracharya, S. R. (2001). Glacial Lake Outburst Floods and Damage in the Country. Pages 121–136 in: Inventory of Glaciers, Glacial Lakes and Glacial Lake Outburst Floods: Monitoring and Early Warning Systems in the Hindu Kush-Himalayan Region, Nepal. International Centre for Integrated Mountain Development, Kathmandu. Both Sunkoshi and Bhotekoshi river courses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2014 Sunkoshi Blockage
On 2 August 2014, due to heavy rainfall, a landslide occurred at the Sunkoshi river, killing 156 people and blocking the river to form an artificial lake in Sindhupalchok District, Nepal. Araniko Highway, the main (and only) artery of goods and people flow to China, was blocked by the landslide ripping out 5 km of highway, and causing huge traffic jam. 2 dozens houses have been swept by the landslide. The landslide had a volume of 5.5 million cubic metres. This landslide had massive effects far beyond, not evident from the pictures. The dammed river was threatening to unleash a torrent of water to hundreds of downstream villages that would ravage as far as Northern India. Despite the use of dynamite, it took the Nepali Army 45 days to dig a canal through the blockage to allow water in the lake to drain. The lake created was 47 meters deep and over 400 meters long. The hasty emergency draining through the lake canal itself caused damage to houses downstream and threaten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gandaki River
The Gandaki River, also known as the Narayani and the Gandak, is one of the major rivers in Nepal and a left bank tributary of the Ganges in India. Its total catchment area amounts to , most of it in Nepal. In the Nepal Himalayas, it is notable for its deep canyon. The basin also contains three mountains over , namely Dhaulagiri, Manaslu and Annapurna I. Dhaulagiri is the highest point of the Gandaki basin. River course Nepal The Kali Gandaki river source is at the border with Tibet at an elevation of at the Nhubine Himal Glacier in the Mustang region of Nepal. The headwaters stream on some maps is named the Chhuama Khola and then, nearing Lo Manthang, the Nhichung Khola or Choro Khola. The Kali Gandaki then flows southwest (with the name of Mustang Khola on old, outdated maps) through a sheer-sided, deep canyon before widening at the steel footbridge at Chele, where part of its flow funnels through a rock tunnel, and from this point the now wide river is called the Kali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bhotekoshi River
Bhote Koshi in Nepal and Poiqu in Tibet, both names roughly mean "Tibetan river," is the name given to the upper course (main tributary) of the Sun Kosi river. It is part of the Koshi River system in Nepal.Shrestha, A. B., Eriksson, M., Mool, P., Ghimire, P., Mishra, B., & Khanal, N. R. (2010). Glacial lake outburst flood risk assessment of Sun Koshi basin, Nepal. Geomatics, Natural Hazards and Risk 1(2): 157–169. Names and etymology ''Bhotekoshi'' is the Nepalese name ( ne, भोटे कोशी, translit=Bhōṭē kōśī). In Nepali language, the word "bhoṭe" or "bhoṭiyā" means Tibetan; and the word "kosi" means river. As such the name is not unique, the western tributary of the upper Dudh Koshi is also called Bhote Koshi. ''Poiqu'' () is the common name for the river on the Chinese side. It is also transliterated as Boqu via Chinese (). and as Po Chu by early 1990s Everest expeditions. This name means "River of Tibet." This is not a unique name, as it is also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamor River
The Tamor River is a major river in eastern Nepal, which begins around Kanchenjunga. The Tamor and the Arun join the Sun Koshi at Tribenighat to form the giant Saptakoshi which flows through Mahabharat Range on to the Gangetic plain Koshi river system The Koshi or Sapta Kosi drains eastern Nepal. It is known as Sapt Koshi because of the seven rivers which join together in east-central Nepal to form this river. The main rivers forming the Koshi system are – the Sun Koshi, the Indravati River, the Bhote Koshi, the Dudh Koshi, Arun River, Barun River, and Tamur River. The combined river flows through the Chatra Gorge The Chatra Gorge is a canyon cut by the Kosi River across the Mahabharat Range in Nepal. Kosi river system The Kosi, or Sapt Kosi, drains eastern Nepal. It is known as Sapt Koshi because of the seven rivers which join together in east-central Nep ... in a southerly direction to emerge from the hills. The Sun Koshi contributes 44 per cent of the total water in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arun River
The River Arun () is a river in the English county of West Sussex. At long, it is the longest river entirely in Sussex and one of the longest starting in Sussex after the River Medway, River Wey and River Mole. From the series of small streams that form its source in the area of St Leonard's Forest in the Weald, the Arun flows westwards through Horsham to Nowhurst where it is joined by the North River. Turning to the south, it is joined by its main tributary, the western River Rother, and continues through a gap in the South Downs to Arundel to join the English Channel at Littlehampton. It is one of the faster flowing rivers in England, and is tidal as far inland as Pallingham Quay, upstream from the sea at Littlehampton. The Arun gives its name to the Arun local government district of West Sussex. The first major improvements to the river were made between the 1540s and the 1570s, when Arundel became a port, and navigation up to Pallingham was improved, but barges had di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sankhuwasabha
Sankhuwasabha District ( ne, सङ्खुवासभा जिल्ला ) is one of 14 districts of Province No. 1 of eastern Nepal. The district's area is 3,480 km2 with a population of 159,203 in 2001 and 158,742 in 2011. The administrative center is Khandbari. Bordering districts are Bhojpur, Terhathum and Dhankuta in Koshi Zone; Solukhumbu in Sagarmatha Zone; and Taplejung in Province No. 1. Tingri County of Shigatse Prefecture in the Tibet Autonomous Region of China borders to the north. Geography and climate The Arun River enters from Tibet at an elevation of about 3,500 meters (11,500 feet) and flows south across the district, forming one of the world's deepest valleys relative to 8,481 meter Makalu to the west and 8,586 meter Kangchenjunga to the east. Demographics Religion Languages See also * Arun Valley *Tumlingtar Airport * khadbari *Panchkhapan Panchkhapan ( ne, पाँचखप्पन) is an urban municipality out of fiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
