Mauritania

Overview of Flooding in Rosso, Mauritania (as of 11 Sep 2009)

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This map illustrates satellite-detected areas of probable flood waters and flood-affected areas within the city of Rosso, Mauritania as based on change detection methods using Radarsat-2 and ENVISAT ASAR data acquired 10 September, and pre-crisis Spot-5 imagery acquired 10 November 2008. Pre-crisis Radasat-1 from 6 September 1999 and was also used. The primary locations of flood waters affecting the city are located in the northern and eastern edge of the urban zone. Please note there is an associated degree of uncertainly for this flood assessment resulting from the dense urban environment and the lack of archived radar data of corresponding sensor characteristics. It is likely that standing water bodies located along narrow streets have been potentially underestimated. This flood assessment is a preliminary analysis & has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT. Map scale for A3: 1:25,000; Projection : UTM Zone 28 North; Datum : WGS-84 (EGM-96)
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