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Flood in Laos

Monsoon rain caused a hydroelectric dam to collapse in Laos on 23 July. Flood waters inundated six villages in Attapeu province and left more than 6000 homeless and hundreds unaccounted for.

The Xe-Pian Xe-Namnoy dam in the southern-most part of the country was under construction at the time of the disaster and was expected to be finished next year. It has been reported that the collapse of the dam - specifically a subsidiary dam called "Saddle Dam D" - released 5 billion cubic metres of water which destroyed hundreds of homes in the province and has already claimed several lives.

Affected residents are being evacuated to emergency shelters.

Related News and Resources

Type of Event:Flood
Location of Event:Laos People's Democratic Republic
Date of Charter Activation:2018-07-24
Time of Charter Activation:14:31
Time zone of Charter Activation:UTC+02:00
Charter Requestor:UNITAR - UNOSAT on behalf of World Food Programme (WFP) and UNOOSA on behalf of the Ministry of Science and Technology and Department of Disaster Management and Climate of Laos
Activation ID:578
Project Management:UNITAR / UNOSAT

Products

Satellite detected water extent as of 30 July 2018 over Samakkhixay District, Attapeu Province, Laos

Copyright: KOMPSAT-5 © KARI (2018)
Map produced by UNITAR/UNOSAT

Information about the Product

Acquired: 30/07/2018

Source: KOMPSAT-5

Satellite detected water extent as of 27 July 2018 over Sanamxay District, Attapeu Province, Laos

Copyright: TerraSAR-X © DLR e. V. 2018, Distribution: Airbus DS Geo GmbH
Map produced by UNITAR/UNOSAT

Information about the Product

Acquired: 27/07/2018

Source: TerraSAR-X

Potentially affected villages along Vang Ngao River and Xe Kong River, Laos

Download the full report

Copyright: © Copernicus Sentinel data (2018)
Report produced by UNITAR/UNOSAT

Information about the Product

Acquired: 25/07/2018 & 29/07/2018

Source: Sentinel-1

Time series: Evolution satellite detected water extent over Sanamxay District, Laos

Copyright: © Copernicus Sentinel data (2018)
Map produced by UNITAR/UNOSAT

Information about the Product

Acquired: 13/07/2018, 25/07/2018 & 29/07/2018

Source: Sentinel-1

Time series: Evolution flood satellite detected waters, Laos

Copyright: © Copernicus Sentinel data (2018)
Map produced by UNITAR/UNOSAT

Information about the Product

Acquired: 13/07/2018, 25/07/2018 & 29/07/2018

Source: Sentinel-1

Overview and potentially flooded areas after collapse of the Xe-Namnoy dam

Download the full report

Copyright: Sentinel-1 © Copernicus Sentinel data (2018)
Report produced by UNITAR/UNOSAT

Information about the Product

Acquired: Pre-disaster: 13/07/2018
Post-disaster: 25/07/2018

Source: Sentinel-1

Flooding impact map of the dam collapse in Laos

Copyright: © Contains modified Copernicus Sentinel data (2018)
Map produced by ADPC

Information about the Product

Acquired: 25/07/2018

Source: Sentinel-1

Flooding impact map of the dam collapse in Laos

Copyright: © JAXA (2018)
Map produced by ADPC

Information about the Product

Acquired: 25/07/2018

Source: ALOS-2

Evolution satellite detected water extent over Sanamxay District, Attapeu Province, Lao People Democratic Republic

Copyright: RADARSAT-2 Data and Products © Maxar Technologies Ltd. (2018) - All Rights Reserved. RADARSAT is an official trademark of the Canadian Space Agency.
Map produced by UNITAR / UNOSAT

Information about the Product

Acquired: Pre-Disaster: 10/07/2018
Post-Disaster: 24/07/2018

Source: RADARSAT-2

Satellite detected water extent over Sanamxay District, Attapeu Province, Lao People Democratic Republic

Copyright: RADARSAT-2 Data and Products © Maxar Technologies Ltd. (2018) - All Rights Reserved. RADARSAT is an official trademark of the Canadian Space Agency.
Map produced by UNITAR / UNOSAT

Information about the Product

Acquired: 24/07/2018

Source: RADARSAT-2

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