Product ID: 3173 - English
Published: 10 Nov, 2020
GLIDE: TC20201028VNM


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This map illustrates satellite-detected surface waters in Ha Tinh Province of Viet Nam as observed from a Sentinel-1 image acquired on 9 November 2020 at 05:51 local time. Within the analyzed area of about 6,000 km2, a total of about 40 km2 of lands appear to be flooded. The water extent appears to have receded of about 540 km2 since 3 November 2020. Based on Worldpop population data and the detected surface waters, about 17,000 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 : 8 November 2020
Acquisition time :22:51 UTC
Resolution: 10 m
Copyright : Contain modified Copernicus Sentinel Data [2020]
Source : ESA Satellite
Satellite Data: SAOCOM-1A Imagery
Date : 3 Novemver 2020
Acquisition time : 09:52 UTC
Resolution: 23 m
Copyright : SAOCOM ProductCONAE - (2020) All Rights Reserved
Administrative boundaries: OCHA ROAP Population data: WorldPop [2020]
Reference Water : The European Commission's JRC Road : Open Street Map
Background : ALOS Global DSM
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT