Product ID: 3155 - English
Published: 30 Oct, 2020
GLIDE: TC20201028VNM

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This map illustrates satellite-detected surface waters in Quang Ngai Province of Viet Nam as observed from a Sentinel-1 image acquired on 30 October 2020. Within the analyzed area of about 5,000 km2, a total of about 90 km2 of lands appear to be flooded. The water extent appears to have increased of about 80 km2 since 25 October 2020. Based on Worldpop population data and the detected surface waters, about 53,000 people are potentially exposed or living close to flooded areas.
This is a preliminary analysis and has not yet been validated in the field. Please send ground feedback to UNITAR-UNOSAT.
Important Note: Flood analysis from radar images may underestimate the presence of standing waters in built-up areas and densely vegetated areas due to backscattering properties of the radar signal.
Satellite Data : Sentinel-1
Imagery Date : 30 and 25 October 2020
Resolution : 10 m
Copyright : Contain modified Copernicus Sentinel Data [2020]
Source : ESA
Administrative boundaries: OCHA ROAP
Population data: WorldPop [2020]
Reference Water : The European Commission's Joint Research Centre
Road : OpenStreetMap
Background : ALOS Global DSM
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT