Flood Disaster In 6 District of Bihar
Source: ENVISAT-ASAR IMM and IRS L-4, 150 m/pixel (Envisat ASAR); 5.0 m/pixel (IRS L-4) resolution.
Acquired: 22/06/2008, 27/07/2008, 31/08/2008 (Envisat); 24/08/2008 (IRS L-4)
Satellite-detected flood waters surrounding the Taluk HQ town of Chhatapur, Supaul District, Bihar State following an embankment breach on the Koshi River in Nepal on 18 August 2008. Flood water detection was made with IRS (L-4) satellite imagery recorded on 24 August 2008, and a time series of ENVISAT-ASAR (IMM) radar data recorded on 22 June, 27 July and 31 August 2008. A total of 108 village/building cluster sites identified in this map extent, including the Taluk HQ town of Chhatapur are either totally or partially submerged by Koshi River flood waters as indentified with IRS satellite imagery on 24 August 2008. Additional flood analysis from ENVISAT-ASAR radar data recorded on 31 August and 5 September confirm that this area remains severely flooded. Preliminary analysis not yet validated in the field.
Credit: Copyright ESA 2008, ISRO 2008
Image processing, map created 05/09/2008 by UNOSAT.
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