Product ID: 3077 - English
Published: 22 Jul, 2020
GLIDE: FL20200713BGD

Product Links
PDF (1.9MB)     - Static viewing and printing
Shapefile          - Download a Shapefile of data
WebMap          - Dynamic viewing in a browser
Geodatabase   - Download data in the ESRI format
Table                 - Excel

This map illustrates satellite-detected surface waters over Chittagong, Dhaka, Mymensingh and Sylhet Divisions of Bangladesh as observed from a Sentinel-1 image acquired on 20 July 2020 due to the current monsoon rains. Within the analyzed area of about 14,250 km2, a total of about 7,120 km2 of lands appear to be flooded. Based on WorldPop population data and the detected surface waters, about 6,700,000 people area 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: 20 July 2020
Resolution: 10 m
Copyright: Contains modified Copernicus Sentinel data [2020]
Source: ESA
Administrative boundaries: Bangladesh Bureau of Statistics
Population data: WorldPop [2020]
Reference Water : JRC
River : HOTOSM
Analysis : UNITAR - UNOSAT
Production: UNITAR - UNOSAT