Laos Dam Failure 2018

Start Date

July 25, 2018


A hydroelectric dam under construction in southeast Laos collapsed late Monday July 23rd  in the Attapeu province of Sanamxay district, releasing an estimated half billion cubic meters of water.  The collapse has left hundreds missing and an unknown number dead as water went gushing into six villages.  Approximately 6,600 people have been left homeless as the result of the flood.   The dam, which was under construction and not yet in operation collapsed after heavy monsoon rains in the area.   


Latest Updates

July 27, 2018
LAOS Dam failure
On July 25, 2018, the Sentinel-1 satellite from the European Space Agency (ESA) Copernicus program captured a clear image of the collapsed Xe-Pian Xe-Namnoy dam and resulting floods. The imagery within the map viewer shows a drastic drop in the reservoir level, the impacts of which were felt on villages downstream.  NASA and SERVIR-Mekong processed satellite imagery to estimate the extent of the flooded areas, particularly along the Xe Pian River and village of Sanamxai along the Xe Khong River in Attapeu province. Since the dam failure on July 23, cloudy skies have...