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Update 1: Situation Map of Ataabad Dam Site and Current Lake Extent, Hunza River, Hunza-Nagar District, Pakistan

Thu, 27 May 2010 08:04:16 GMT
 International Charter Space and Major Disasters
Product ID: 1444 - English
Published: 27 May, 2010
GLIDE: LS-2010-000004-PAK
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 36.4428 x 74.8005
BottomRight: 36.2964 x 74.8999

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This map contains an updated flood water extent of the Ataabad lake as detected in SPOT-4 satellite data recorded on 21 May and ASTER imagery on 14 May 2010. The lake was caused by a landslide across the Hunza River on 4 January 2010, in Hunza-Nagar district, Pakistan. The lake is currently rising due to recent glacial melt and rainfall, and there is a distinct threat of sudden outflow / overtopping of the dam. The pre-landslide Hunza river extent was extracted from ALOS ANVIR 2 satellite imagery recorded on 10 September 2009. It has been estimated that approximately 13.6km of the Karakoram Highway (KKH) has been flooded by the lake and at least three main bridges have been submerged. The extent of Hunza Lake on 21 May was approximately 828ha (not including the normal river surface area). This represents an increase of approximately 318ha in water surface area between 14 and 21 May 2010. The majority of this water surface expansion was located in the northern sections of the river as the winter run-off accumulates further upstream. 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 prints: 1:46,000; Projection : UTM Zone 43N; Datum : WGS-84
Crisis Satellite Data : SPOT-4
Resolution : 10 meters
Image Date : 21 May 2010
Copyright : SPOT Image 2010
Crisis Satellite Data : ASTER
Resolution : 15 meters
Image Date : 14 May 2010
Source : NASA / USGS
Elevation Data : Aster GDEM
Source : METI & NASA 2009
Pre-crisis Satellite Data : ALOS ANVIR 2
Resolution : 10 meters
Radar Dates : 10 September 2009
Source : JAXA
GIS Data : NGA, USGS, OCHA
Road Data : Open Street Map
Flood Analysis : UNITAR / UNOSAT
Map Production : UNITAR / UNOSAT

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