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Updated Flood Waters in Charsadda and Nowshera Districts, Pakistan

Mon, 9 Aug 2010 15:37:35 GMT
 International Charter Space and Major Disasters
Product ID: 1473 - English
Published: 9 Aug, 2010
GLIDE: FL-2010-000141-PAK
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 34.213 x 71.632
BottomRight: 33.931 x 72.139

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This map presents an analysis of standing flood waters over the affected Charsadda and Nowshera Districts, Khyber-Pakhtunkha Province, Pakistan, based on post-disaster RADARSAT-2 data from 5 August and MODIS on 31 July 2010. Pre-flood water data was obtained from RADARSAT-1 satellite data (1 Dec. 1999). There are strong indications that flood water levels have significantly receded along the upstream sections of the Swat and Kabul Rivers north of Charsadda before the confluence, and over a 15km section of the Kabul River downstream of Charsadda. The bulk of standing flood waters within 10km upstream of Nowshera city appear to be receding at a much slower rate leaving the total area of standing flood waters on 5 August similar to that of 31 July 2010. Water levels a kilometre after Nowshera city along the Kabul River towards the Ghazi Brotha dam appear also to have receeded to a significant degree. Please note: there are several associated levels of uncertainly with this analysis due to the limitations of comparing radar and optical satellite data with different spatial resolutions. It is likely that the extent of the flood waters detected on 5 August has been underestimated along some sections of the Kabul River within the map extent. The exact limit of the MODIS flood water detection on 31 July 2010 is also uncertain because of the relatively low spatial resolution of the sensors used. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT. Map scale for A3: 1:140,000; Map Production : UNITAR / UNOSAT; Projection : UTM Zone 43N (WGS-84).
Crisis Satellite Data (1) : RADARSAT-2
Resolution : 25 meters
Image Date : 5 August 2010
Copyright : Radarsat 2 © MDA 2010
Source : Canadian Space Agency
Crisis Satellite Data (2) : MODIS Aqua & Terra
Resolution : 250 meters
Image Date : 31 July - 1 August 2010
Source : NASA Rapid Response
PreCrisis Satellite Data : RADARSAT 1
Resolution : 25 meters
Image Date : 1 December 2010
Copyright : Radarsat 1 © MDA 2010
Source : Canadian Space Agency
Elevation Data : Aster GDEM
Source : METI & NASA 2009
GIS Data : NGA, OCHA, Google Maps
Hydrology Data : USGS HydroSheds
Road Data : Google Map Maker
Road Data Copyright: © 2009 Google - Improve with Google Map Maker
Background Imagery: ESRI (Landsat7 WMS)
Refugee Data : UNHCR
Hospital Data : WHO
Flood Analysis & Map Production: UNITAR / UNOSAT

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