Site & Current Lake Extent, Hunza River, !&Flooding ... · Hunza-Nagar District, Gilgit,...

XY

XY

XY

XY

XY

")

")

")

")

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Hullehgush

Hussaini

Ghulkin

Gulmit

Chaman Gul

Shishkat

Atta Abad

74°54'0"E

74°54'0"E

74°52'0"E

74°52'0"E

74°50'0"E

74°50'0"E

74°48'0"E

74°48'0"E

36°2

6'0"N

36°2

6'0"N

36°2

4'0"N

36°2

4'0"N

36°2

2'0"N

36°2

2'0"N

36°2

0'0"N

36°2

0'0"N

36°1

8'0"N

36°1

8'0"N

482000

482000

484000

484000

486000

486000

488000

488000

490000

490000

4018

000

4018

000

4020

000

4020

000

4022

000

4022

000

4024

000

4024

000

4026

000

4026

000

4028

000

4028

000

4030

000

4030

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4032

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4032

000

Crisis Satellite Data ............ SPOT-4Resolution .......................... 10 metersImage Date ....................... 21 May 2010Copyright ........................... SPOT Image 2010Crisis Satellite Data ............ ASTERResolution ......................... 15 metersImage Date ....................... 14 May 2010Source .............................. NASA / USGSElevation Data ................... Aster GDEMSource ............................... METI & NASA 2009Precrisis Satellite Data ....... ALOS AVNIR 2Resolution .......................... 10 metersRadar Dates ...................... 10 September 2009Source ............................... JAXAGIS Data ............................ NGA, USGS, OCHARoad Data ......................... Open Street MapFlood Analysis .................... UNITAR / UNOSATMap Production ................ UNITAR / UNOSATProjection ........................... UTM Zone 43NDatum ................................ WGS-84

Legend

..... Bridge (likely functional)XY

Airfield.....!I

26 May 2010Version 2.0

Glide No:LS-2010-000004-PAK!!,

Landslide Lake Flooding

!!&

Map Exent

The depiction and use of boundaries, geographic names andrelated data shown here are not warranted to be error-freenor do they imply official endorsement or acceptance by theUnited Nations. UNOSAT is a program of the United NationsInstitute for Training and Research (UNITAR), providingsatellite imagery and related geographic information,research and analysis to UN humanitarian & developmentagencies & their implementing partners.

Map Scale for A3: 1:46,000

SATELLITE ASSESSMENT CLASSIFICATION:

Probable Flood Waters(Attabad Dam Lake) as on 14 May 2010.....

Pre-Landslide Hunza River Extentas on 10 September 2009

.....Cultivated Lands as on 10 September 2009

Ataabad Landslide Zone

.....

This map contains an updated flood water extent of theAttabad lake as detected in SPOT-4 satellite datarecorded on 21 May and ASTER imagery on 14 May2010. The lake was caused by a landslide across theHunza River on 4 January 2010, in Hunza-Nagar district,Pakistan. The lake is currently rising due to recent glacialmelt and rainfall, and there is a distinct threat of suddenoutflow / overtopping of the dam. The pre-landslide Hunzariver extent was extracted from ALOS AVNIR 2 satelliteimagery recorded on 10 September 2009. It has beenestimated that approximately 13.6km of the KarakoramHighway (KKH) has been flooded by the lake and at leastthree main bridges have been submerged. The currentextent of Hunza lake as of 21 May was approximately828ha (not including the normal river surface area). Thisrepresents an increase of approximately 318ha in watersurface area between 14 and 21 May 2010. The majorityof this water surface expansion was located in thenorthern sections of the river as the winter run-offaccumulates further upstream. This flood assessment is apreliminary analysis & has not yet been validated in thefield. Please send ground feedback to UNITAR / UNOSAT.

Update 1: Situation Map of Attabad DamSite & Current Lake Extent, Hunza River,Hunza-Nagar District, Gilgit, PakistanDisaster coverage by the

International Charter 'Spaceand Major Disasters'. For more

information on the Charter,which is about assisting thedisaster relief organizationswith multi-satellite data and

information, visitwww.disasterscharter.org

Contact Information: unosat@unitar.org24/7 Hotline: +41 76 487 4998

www.unosat.org

") Village / Town.....

Likely Undamaged Segment of Karakoram Highway (KKH).....

!I

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Likely Flooded Segment of Karakoram Highway (KKH).....

..... Bridge (likely Flooded / Destroyed)XY

0 0.5 1 1.5 20.25Kilometers

Probable Areas of Flood WaterExpansion as on 21 May 2010.....

Potentially Flood-AffectedLand as on 21 May 2010.....

Analysis Main Findings:1) Approximately 13.6km of the Karakoram Highway (KKH) has been flooded2) Three main bridges have been submerged3) The surface area of Hunza Lake on 21 May was approximately 828ha *4) The surface area of Hunza Lake on 14 May was approximately 509ha *5) The surface area of Hunza Lake increased by approximately 318ha between 14and 21 May 2010. The majority of this surface water expansion was located in thenorthern sections of the river as the winter run-off accumulates further upstream(* This does not include the pre-landslide river surface area)

Elevation Contours in 100m Intervals