UNOSATThis map illustrates the satellite-detected water extent in the Phonhong & Viengkham Districts, Vientiane Province, in the northwestern part of Lao People's Democratic Republic after the tropical storm SONCA-17. The UNITAR-UNOSAT analysis used a Sentinel-1 satellite image acquired on the 1 August 2017 and detected several areas with potentially standing waters. In the district of Phonhong 2,045 ha are likely flooded and in the district of Viengkham 1,077 ha. This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.satellite-detected-water-extent-in-the-phonhong-viengkham-districts-vientiane-province-lao-pdrHumanitarian Data ExchangePublicSatellite Detected Water Extent in the Phonhong & Viengkham Districts, Vientiane Province, Lao PDRDatasetsLao People's Democratic Republic2017-08-11