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water-extents-in-farafangana-district-atsimo-atsinanana-region-madagascar-as-of-15-februar-showcase
  • Satellite detected water extents in Farafangana district, Atsimo Atsinanana...
    United Nations Satellite Centre (UNOSAT)
    Time Period of the Dataset [?]: February 15, 2022-February 15, 2022 ... More
    Modified [?]: 16 February 2022
    Dataset Added on HDX [?]: 16 February 2022
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    This dataset updates: Never
    UNOSAT code: TC20220201MDG This map illustrates satellite-detected surface waters in Farafangana district, Atsimo Atsinanana region, Madagascar as observed from Sentinel-1 image acquired of 15 February 2022 at 05:12 local time. Within the analyzed area of about 1,200 km2, about 6 km2 of lands appear to be flooded. The water extent appears to have decreased of about 87 km2 since 8 February 2022. Based on Worldpop population data and the detected surface waters, about 1,200 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.