Product ID: 3130 - English
Published: 14 Oct, 2020
GLIDE: TC20201013VNM

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This map illustrates satellite-detected surface waters over Da Nang City, Quang Nam, Quang Ngai, Quang Tri and Thua Thien Hue Provinces of Viet Nam as observed from Sentinel-1 image acquired on 13 Oct 2020. Within the analyzed area of about 10,000 km2, a total of about 740 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters, about 171,000 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 Dates: 13 October 2020
Resolution: 10 m
Copyright: Contains modified Copernicus Sentinel data [2020]
Source: ESA
Administrative boundaries: GADM
Population data: WorldPop [2020]
Reference Water : JRC
Background: ALOS Global DSM
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT