HAI LAN G

GI O L I NH

TR IE U PH ON G

VI NH L I NH

CAM LO

DA K RO NG

DO NG HA

QU AN G T RI

PHO N G D I E N

LE T HU YCO N CO

Q U A N G T R I

T H U A T H I E N H U E

Cam Lo

Mui Lay

Chap Le

QUANG TRI

Vinh Linh

Thon My Thuy

Cat Son Phuong

107?20'0"E

107?20'0"E

107?10'0"E

107?10'0"E

107?0'0"E

107?0'0"E

17?1

0'0"N

17?1

0'0"N

17?0

'0"N

17?0

'0"N

16?5

0'0"N

16?5

0'0"N

16?4

0'0"N

16?4

0'0"N

VIET NAMImagery analysis: 29 October 2020 | Published 29 October 2020 | Version 1.0

Tropical Cyclone

TC20201028VNM

!\Hanoi

The depiction and use of boundaries, geographic names and related data shown here are not warrantedto be error-free nor do they imply official endorsement or acceptance by the United Nations. UNOSAT isa program of the United Nations Institute for Training and Research (UNITAR), providing satellite imageryand related geographic information, research and analysis to UN humanitarian & development agencies& their implementing partners. This work by UNITAR-UNOSAT is licensed under a CC BY-NC 3.0.

UNITAR - UNOSAT - Palais des Nations CH-1211 Geneva 10, Switzerland - T: +41 22 767 4020 (UNOSAT Operations) - Hotline 24/7 : +41 75 411 4998 - unosat@unitar.org - www.unitar.org/unosat

Satellite detected waters inQuang Tri Province of Viet Namas of 29 October 2020

Satellite Data : Sentinel-1Imagery Date : 29 and 25 October 2020 Resolution : 10 mCopyright : Contain modified CopernicusSentinel Data [2020]Source : ESA

Administrative boundaries: OCHA ROAPPopulation data: WorldPop [2020]Reference Water : The EuropeanCommission's Joint Research CentreRoad : Open Street MapBackground : ALOS Global DSM

Analysis : UNITAR - UNOSATProduction: UNITAR - UNOSATAnalysis conducted with ArcGIS v10.7

Coordinate System: WGS 1984 UTM Zone 49NProjection: Transverse MercatorDatum: WGS 1984Units: Meter

Map Scale for A3: 1:200,000

?5

This map illustrates satellite-detected surfacewaters in Quang Tri Province of Viet Nam asobserved from a Sentinel-1 image acquired on29 October 2020 at about 05:43 local time.Within the analyzed area of about 4,600 km2,a total of about 230 km2 of lands appear to beflooded. The water extent appears to haveincreased of about 90 km2 since 25 October2020. Based on Worldpop population data andthe detected surface waters, about 65,000people are potentially exposed or living closeto flooded areas.

This is a preliminary analysis and has not yetbeen validated in the field. Please send groundfeedback to UNITAR-UNOSAT.

Important Note: Flood analysis from radarimages may underestimate the presence ofstanding waters in built-up areas and denselyvegetated areas due to backscatteringproperties of the radar signal.

Legend

Reference water

Primary Road

District boundary

") City / Town

Map location

Quang Tri Province

0 2.5 5 7.5 10km

Satellite detected water [29 October 2020]

Province boundaryRailway

Mai Lanh Ha

I

Satellite detected water [25 October 2020]

Local Road

EA S T V IE T N A M S E A

Analysis Extent