Product ID: 3117 - English
Published: 11 Sep, 2020
GLIDE: FL20200826TCD


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This map illustrates satellite-detected surface waters over Far-North region of Cameroon and Chari-Baguirmi, Hadjer-Lamis and N'Djamena regions of Chad as observed from Sentinel-1 image acquired on 9 Sep 2020. Within the analyzed area of about 800 km2, a total of about 30 km2 of lands appear to be flooded. Based on Worldpop population data and the detected surface waters, about 28,000 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 (Post) : Sentinel-1
Imagery Dates: 9 September 2020
Resolution: 10 m
Copyright: Contains modified Copernicus Sentinel data [2020]
Source: ESA
Satellite Data (Pre): Sentinel-2
Imagery Dates: 13 May 2020
Resolution: 10 m
Copyright: Contains modified Copernicus Sentinel data [2020]
Source: ESA
Administrative boundaries: OCHA Chad and OCHA Cameroon, HDX
Population data: WorldPop [2020]
Road data: OpenStreetMap
Background: BING Basemap
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT