2014 Sunkoshi blockage

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Sunkoshi blockage
Lake formed by Sunkoshi blockage.jpg
Details
CountryNepal
Incident typeFlood
CauseBlockage
Statistics
Deaths156
Lake formed by Sunkoshi blockage
Jure area after landslide

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.[1][2] 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.[3] The landslide had a volume of 5.5 million cubic metres.[4]

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.[5] 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.[6] The lake created was 47 meters deep and over 400 meters long.[7] The hasty emergency draining through the lake canal itself caused damage to houses downstream and threatens to take out Lamusanghu Hydropower Dam.[8]

2015 earthquakes[edit]

Following earthquakes in April and May 2015, concern was expressed that the dam might have become unstable leading to a risk of further flooding downstream of the blockage.[9]

References[edit]

  1. ^ "Downstream areas to be announced flood crisis zone". myrepublica.com. Retrieved August 2, 2014.
  2. ^ "The Himalayan Times : Landslides block Sunkoshi River‚ locals being evacuated – Detail News : Nepal News Portal". thehimalayantimes.com. Retrieved August 8, 2014.
  3. ^ "Massive landslide blocks Sunkoshi River, 8 killed | Top Stories". ekantipur.com. Retrieved August 8, 2014.
  4. ^ "Before and After the Sunkosi Landslide". Earth Observatory. NASA. Retrieved May 22, 2015.
  5. ^ http://www.ekantipur.com/2014/09/07/top-story/water-level-plunges-as-sunkoshi-dam-breaks-open/394673.html
  6. ^ http://www.thehindu.com/news/international/south-asia/nepal-army-unblocks-sunkoshi-river-dammed-by-landslide/article6388064.ece
  7. ^ http://www.myrepublica.com/portal/index.php?action=news_details&news_id=82612
  8. ^ http://www.thehimalayantimes.com/fullNews.php?headline=Artificial+Sunkoshi+Lake+brusts+in+Sindhupalchok&NewsID=426671
  9. ^ Ravilious, Kate (May 13, 2015). "Quake heightens Nepal landslide concern". BBC News Online. Retrieved May 16, 2015.