Product ID: 3563 - English
Published: 21 Jun, 2022
GLIDE: FL20220525BGD

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This map illustrates satellite-detected surface waters in Sylhet, Mymensingh, Dhaka, and Chattogram Divisions, Bangladesh observed from a RCM-1 images acquired on 19 Jun. 2022 at 18:02 local time. Within the analyzed area of about 22,300 km2, about 9,500 km2 of lands appear to be flooded. In this area, about 7,860 km2 of croplands and 1,340 km2 of herbaceous wetland appear to be likely affected by the flood waters.
Based on Worldpop population data and the detected surface waters, about 7,334,000 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 United Nations Satellite Centre (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 : RCM-1
Imagery Dates: 18 Jun. 2022 at 23:45 UTC and 19 Jun at 12:02 UTC
Resolution: 16 m
Copyright: RADARSAT Constellation Mission Imagery © Government of Canada (2022)
Source: CSA / RCM-1
Administrative boundaries: Bangladesh Bureau of Statistics (BBS)
Population data: WorldPop [2020]
Populated place: OpenStreetMap
Road data: OpenStreetMap
Waterways: OpenStreetMap
Airport data: MRVAM project of the Department of Disaster Management (DDM)
Cropland data: ESA WorldCover
Herbaceous wetland data: ESA WorldCover
Reference Water: ESA WorldCover
Copyright: © ESA WorldCover project 2020 / Contains modified Copernicus Sentinel data (2020) processed by ESA WorldCover consortium?
Background: ESRI World Imagery
Insets: Sentinel-2/6 May 2022 & 20 Jun. 2022
Analysis: United Nations Satellite Centre (UNOSAT)
Production: United Nations Satellite Centre (UNOSAT)