0 1 2 3 40.5Km

UNITAR-UNOSAT- Pa la is d es Na tio ns CH-1211 Geneva 10, Switzerla nd - T: +41 22 767 4020 (UNOSAT Opera tio ns) -Hotline 24/7: +41 75 411 4998 - uno sa t@unita r.o rg - www.unita r.o rg/uno sa t

V I E N T I A N E

V I E N T I A N E C A P I T A L

Phonhong

Viengkham

Thoulakhom

Keo oudom

Naxaithong

Thalat

Ban Noi

Ban Non

Ban Thin

Ban Keun

Ban Saka

Ban Phon

Tourakom

Ban Cheng

Ban Na Le

Ban Nalao

Ban Nalao

Ban Na Bon

Ban Ekxang

Ban Hatxai

Ban Na Xay

Ban Na Kho

Ban Naxouak

Ban Na Song

Ban Thinkeo

Muang Naxou

Ban Hat Noy

Ban Vangmon

Ban Na Nine

Ban Phonkok

Ban Hatmala

Ban Lingxan

Ban Nam Poun

Ban Phon Hai

Ban Phon Xai Ban Sai PhonBan Na Thong

Ban Namouang

Ban Na PhengBan Nong PatBan Vaf Kang

Ban Deun Sai

Ban Cheng Na

Ban Napho (2)

Ban Phon Kham

Ban Sang Gnai

Ban Boung Kho

Ban Phon Than Ban Viangkham

Ban Phon NgamBan Phon Sida

Ban Phan Nong

Ban SomsanoukBan Boungphao

Ban Phonsoung

Ban Na Pho Nua

Ban Phon Gnang

Ban Phon Sitai

Ban Nong Poung

Ban Phon Soung

Ban Thin Gnoung

Ban Na Sang Noi

Ban Phon Savang Ban Pakkhagnoung

102°32'0"E

102°32'0"E

102°28'0"E

102°28'0"E

18°2

8'0"N

18°2

8'0"N

18°2

4'0"N

18°2

4'0"N

18°2

0'0"N

18°2

0'0"N

LAO PEOPLE'S DEMOCRATIC REPUBLICImagery analysis: 1 August 2017| Published 11 August 2017 | Version 1.0

Tropical Storm

TC20170731LAO

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L A O P D R

Hanoi

Vientiane

T H A I L A N D

V I E T N A M

The d epictio n a nd use o f b o und a ries, geo gra phic na m es a nd rela ted d a ta sho wn here a reno t wa rra nted to b e erro r-free no r d o they im ply o ffic ia l end o rsem ent or a c c epta nc e b y theUnited Na tio ns. UNOSAT is a pro gra m o f the United Natio ns Institute fo r Tra ining a ndResea rc h (UNITAR), pro vid ing satellite im a gery a nd rela ted geo gra phic info rm a tio n,resea rc h a nd a na lysis to UN hum a nita ria n & d evelo pm ent a genc ies & their implem entingpa rtners. This wo rk b y UNITAR-UNOSAT is lic ensed und er a CC BY-NC 3.0

Satellite Detected Water Extent inPhonhong & Viengkham Districts,Vientiane Province, Lao PDR

Satellite Data (1): Sentinel-1Im a gery Dates: 1 August 2017Reso lutio n: 10mCo pyright: Copernicus 2017 / ESASo urc e: ESA

Baseline Da ta : Natio na l geo gra phic a ld epa rtm ent La o s, OpenStreenM a pAna lysis : UNITAR - UNOSATPro d uctio n: UNITAR - UNOSAT

!IMap Scale for A3: 1:80,000

Ana lysis c o nd ucted with ArcGIS v10.4

Co o rd ina te System : W GS 1984 UTM Zo ne 48NPro jectio n: Tra nsverse M erc a to r

Da tum: W GS 1984Units: M eter

Æ5

Map location

LegendPopula ted pla c ePrim a ry ro a dSec o nd a ry ro a dDistrict b o und a ryPro vinc e b o und a ryPerm a nent wa ter b o d ySa tellite d etected wa ter (1 August 2017)

Phonhong & Viengkham Districts / Vientiane Province

This m a p illustra tes the sa tellite-d etected wa terextent in the Pho nho ng & V iengkha m Districts,V ientia ne Pro vinc e, in the no rthwestern pa rt o fLa o Peo ple’s Dem o c ra tic Repub lic a fter thetro pic a l sto rm SONCA-17. The UNITAR-UNOSAT a na lysis used a Sentinel-1 sa telliteim a ge a cquired o n the 1 August 2017 a ndd etected severa l a rea s with po tentia lly sta nd ingwa ters. In the d istrict o f Pho nho ng 2,045 ha a relikely flo o d ed a nd in the d istrict o f V iengkha m1,077 ha . This is a prelim ina ry a na lysis a ndha s no t yet b een va lid a ted in the field . Plea sesend gro und feed b a c k to UNITAR-UNOSAT.