International Charter Space and Major Disasters
Product ID: 1260 - English
Published: 3 Sep, 2008
GLIDE: FL-2008-000145-IND
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 26.8 x 86.82
BottomRight: 26.47 x 87.16

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This map illustrates satellite detected flood waters on 31 August 2008 for the affected Districts of Sunsari & Saptari, Nepal following a retaining wall breach on the Koshi River on 18 August 2008. Flood water detection was made using a time series of ENVISAT-ASAR (IMM) radar data recorded on 22 June, 27 July & 31 August 2008. The length of the retaining wall breach was estimated at 1,500 meters from ALOS-PALSAR radar data acquired on 24 August 2008. This flood detection is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1: ; Projection : UTM, Zone 45 North; Datum : WGS 1984.
Satellite Data (1) : ENVISAT-ASAR IMM
Resolution : 150 m
Date Series : 22 June, 27 July & 31 Aug. 2008
Copyright : ESA (2008)
Satellite Data (2) : ALOS PALSAR
Resolution : 12.5 m
Date Series : 24 Aug. 2008
Copyright : JAXA (2008)
Flood Analysis : UNOSAT & ESA (FAIRE)
Other GIS Data : ICIMOD, GIST, USGS, WHO
Map Production : UNOSAT (3 September 2008)