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2023 Sikkim flash floods

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caused Sikkim to receive more than double its normal rainfall; between 3 and 4 October alone, the state received five times the usual precipitation. The South Lhonak burst its shores, causing a flash flood. Satellite images from the
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1.9 kilometres (1.2 mi), the lake swelled in size, covering nearly 100 hectares (247 acres) by 2008. It was identified as potentially at risk of causing glacial outburst floods, and in 2018 pipelines were carried up by
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are involved in the ongoing relief operations. Two thousand four hundred people were evacuated from flood-hit areas, and 7,600 others were in relief camps. Ten thousand more were evacuated in West Bengal.
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At least 40 people were killed and 22 injured, while 75 were reported missing as of 6 October. By 18 October, 92 were confirmed dead, with more bodies being retrieved. Among the missing were 23
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at midnight, the operators of the Teesta III Dam at Chungthang rushed to open the dam's gates, but were too late; the flood quickly destroyed the dam, as well as the bridge to its 1200-
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districts in West Bengal. The flood also went onwards to Bangladesh, where it affected hundreds of villages along the Teesta River and Char areas.
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personnel, of whom seven were subsequently found dead and one rescued alive. One of the dead soldiers was found floating in the Teesta in
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handed over the body to the Indian officials through a flag meeting. One child was killed and six injured in the neighbouring state of
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Before the flood, scientists and authorities were working on installing an early warning system for glacial floods from the lake.
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Water levels downstream in the River Teesta subsequently rose by 15 to 20 feet (4.6 to 6.1 m), flooding many areas in
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Fourteen people were believed to be trapped inside the tunnels of the destroyed Teesta III Dam; a 60-strong team of the
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at midnight, before its gates could be opened, destroying the dam in minutes. Water levels downstream in the
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show that the lake's surface area shrunk by more than 100 hectares (247 acres). Based on a warning from the
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Fifteen bridges across the state were washed away, and the north of the state, including the capital
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The government of Sikkim declared the flood a disaster, and the Indian central government released
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images from 28 September 2023 showed the lake covering an area of 167.4 hectares (414 acres).
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collapsed. Three thousand tourists were stranded across the state. Towns and cities like
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Please help update this article to reflect recent events or newly available information.
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5.76 million) in disaster relief funds. Additionally, the state government announced an
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images show that it became a separate lake by 1977, with a surface area of 17
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Satellite image from 2006 showing the expansion of the lake over four decades
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Babu Govindha Raj, K.; Remya, S. N.; Vinod Kumar, K. (10 February 2013).
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carried downstream from Sikkim exploded after being picked up by locals.
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Based on an exchange rate of 1 USD = 83.26 INR as of 6 October 2023
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rose by up to 20 feet (6.1 m), causing widespread damage.
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Choudhury, Subrata Nag; Hussain, Zarir (4 October 2023).
1072: 1396: 1370: 1299: 1253: 1182: 1142: 764:Choudhury, Subrata Nag; Ahmed, Aftab (2023-10-06). 128: 120: 105: 44: 36: 138:On 4 October 2023, heavy rains caused the glacial 311:, was cut off from the rest of India as parts of 173:It was the deadliest flood in the area after the 269:hydroelectric powerhouse, which was submerged. 1479: 1122: 8: 19: 132:15 bridges, one hydroelectric dam destroyed 1486: 1472: 1464: 1129: 1115: 1107: 25: 18: 1079: 492: 472: 233:and installed to pump water out of it. 897: 895: 865: 863: 792: 790: 177:when around 1000 people were killed. 7: 759: 757: 755: 753: 534: 532: 500: 498: 496: 848:from the original on 7 October 2023 582:from the original on 4 October 2023 550:from the original on 4 October 2023 517:from the original on 4 October 2023 224:). In four decades, as the glacier 16:Natural disaster in Northeast India 255:Indian Space Research Organisation 14: 154:, to breach its banks, causing a 1203:Fujian, Beijing, Jilin and Hebei 1094: 1082: 1024:. 4 October 2023. Archived from 655:from the original on 14 May 2023 401: 389:— was assembled to rescue them. 383:National Disaster Response Force 371:National Disaster Response Force 205:satellite images from 1962 as a 31:The state of Sikkim within India 1058:from the original on 2023-10-06 974:from the original on 2023-10-05 945:from the original on 2023-10-10 881:from the original on 2023-10-05 816:from the original on 2023-10-06 776:from the original on 2023-10-06 739:from the original on 2023-10-06 710:from the original on 2023-10-06 1568:Andhra Pradesh train collision 1: 1648:Glacial lake outburst floods 1628:October 2023 events in India 992:Lama, Prawesh (2023-10-17). 197:fed by the meltwater of the 1574:Uttarakhand tunnel collapse 674:Singh, Jyoti (2018-09-26). 339:were very heavily damaged. 193:The South Lhonak Lake is a 156:glacial lake outburst flood 1664: 1498:Disasters in India in 2023 610:(in Dutch). 9 October 2023 263:Indo-Tibetan Border Police 1512:January – present   1507: 1442: 410:This section needs to be 288:districts in Sikkim, and 248:In early October 2023, a 24: 1638:Disasters in West Bengal 1520:Indore stepwell collapse 1315:Fort Lauderdale, Florida 158:. The flood reached the 20:2023 Sikkim flash floods 1608:2023 disasters in India 1556:Mizoram bridge collapse 1524:April – present   447:Border Guard Bangladesh 201:. It was first seen in 1550:Odisha train collision 1532:Maharashtra heatstroke 190: 1345:Northeast (September) 188: 116:due to heavy rainfall 1623:2020s in West Bengal 1544:Tanur boat capsizing 1633:Disasters in Sikkim 1613:2023 floods in Asia 1578:15 November   1572:12 November   1562:Sikkim flash floods 365:compensation of ₹4 313:National Highway 10 195:moraine-dammed lake 21: 1526:North India floods 907:The Economic Times 844:. 6 October 2023. 704:The Indian Express 663:– via JSTOR. 578:. 4 October 2023. 546:. 4 October 2023. 191: 175:1968 Sikkim floods 152:northeastern India 1595: 1594: 1584:December   1580:Doda bus accident 1566:29 October   1554:23 August   1538:Ludhiana gas leak 1514:COVID-19 pandemic 1461: 1460: 1407:Western Australia 1381:Rio Grande do Sul 1028:on 4 October 2023 575:The Tribune India 431: 430: 343:Relief operations 207:supraglacial lake 140:South Lhonak lake 136: 135: 114:South Lhonak lake 1655: 1536:30 April   1530:16 April   1518:30 March   1499: 1488: 1481: 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Index


Sikkim
Mangan
Gangtok
Pakyong
Namchi
West Bengal
Cooch Behar
Jalpaiguri
Darjeeling
Kalimpong
Outburst
South Lhonak lake
South Lhonak lake
Sikkim
state
northeastern India
glacial lake outburst flood
Teesta III Dam
Chungthang
River Teesta
1968 Sikkim floods
A 2006 satellite image of the South Lhonak Lake, with overlaid lines showing its smaller historical extent
moraine-dammed lake
Lhonak glacier
CORONA
supraglacial lake
Landsat
MSS
hectares

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