Product ID: 3159 - English
Published: 2 Nov, 2020
GLIDE: TC20201028VNM


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This map illustrates satellite-detected surface waters in Nghe An Province of Viet Nam as observed from a Radarsat Constellation 1 image acquired on 31 October 2020 at about 17:56 local time. Within the analyzed area of about 8,000 km2, a total of about 400 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters, about 300,000 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: Radarsat Constellation 1
Imagery Date: 31 October 2020
Acquisition time : 10:56 UTC
Resolution: 12.5 m
Copyright: RADARSAT Constellation Mission Imagery © Government of Canada (2020)
Administrative boundaries: OCHA ROAP
Population data: WorldPop [2020]
Reference Water : The European Commission's Joint Research Centre
Road : Open Street Map
Background : ALOS Global DSM
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT