Update 2: Situation Map of Attabad Dam Site and Current Lake Extent, Hunza River, Hunza-Nagar District, Gilgit, Pakistan

International Charter Space and Major Disasters Product ID: 1445 - English Published: 2 Jun, 2010 GLIDE: LS-2010-000004-PAK FootPrint (Lat x Long, WSG84 Geographic, decimal degrees) TopLeft: 36.484494 x 74.799561 BottomRight: 36.295 x 74.9037
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This map contains an updated flood water extent of the Attabad lake as detected in SPOT-4 satellite data recorded on 31 May and SPOT imagery on 21 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 AVNIR 2 satellite imagery recorded on 10 September 2009. It has been estimated that approximately 16.37km of the Karakoram Highway (KKH) has been flooded by the lake and at least three main bridges have been submerged. The current extent of Hunza lake as of 31 May was approximately 875ha (not including the normal river surface area). This represents an increase of approximately 47ha in water surface area between 21 and 31 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.
Crisis Satellite Data ............ SPOT-4 Resolution .......................... 10 meters Image Date ....................... 31 May 2010 Copyright ........................... SPOT Image 2010 Crisis Satellite Data ............ SPOT-4 Resolution ......................... 10 meters Image Date ....................... 21 May 2010 Source .............................. SPOT Image 2010 Elevation Data ................... Aster GDEM Source ............................... METI & NASA 2009 Precrisis Satellite Data ....... ALOS AVNIR 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 Projection ........................... UTM Zone 43N Datum ................................ WGS-84