floods in rakhine state, myanmar - unitar · 2016-08-03 · floods in rakhine state, myanmar:...

Floods in Rakhine State,

Myanmar Situation Analysis Preliminary Report

25 July 2016 Geneva, Switzerland

Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report

Report Content

1. Situation Overview ................................................................................................................... 1

1.1. Figure 1: Satellite detected water extent by landcover type as of 14 July 2016 ......................... 2

2. Flood Water Extent ................................................................................................................... 3

2.1. Figure 2: Satellite detected flood water extent intensity by township as of 14 July 2016 .......... 4

3. Population Exposure ................................................................................................................. 5

3.1. Figure 3: Total flood affected population aggregated to townships as of 14 July 2016 .............. 6

4. Affected Transport Network ..................................................................................................... 7

4.1. Figure 4: Potentially affected roads as of 14 July 2016 ................................................................ 8

1

1. Situation Overview

The Monsoon rains since 01 July 2016 triggered flooding and landslides in several areas of Myanmar

(including Rakhine, Kachin, Chin, Sagaing, Magway and Bago). The Rakhine State Government

reported that 24,306 people were displaced across the four most affected townships: Minbya (13,123),

Ann (4,659), Mrauk-U (3,696) and Kyauktaw (2,828 people). As of 15 July, flood waters had begun

receding in most areas allowing people to return to their villages. In Rakhine State, the meteorological

stations of Kyaukpyu, Sittwe and Kyauktaw recorded heavy rains from 4 to 6 July 2016 as illustrated

below:

These levels of rains are quite identical to the precipitation recorded in the same period of the previous

year, characterised by the occurrence of a similar event.

The following report explores the water extent situation of Rakhine State, Myanmar as of 14th of July

2016.


2

The map below illustrates satellite detected water extent by landcover type derived from the landcover

map data and analysis of Rakhine State, Myanmar produced by UNITAR–UNOSAT in 2015

(http://www.unitar.org/unosat/node/44/2226). The potential flood water extent was achieved by

subtracting the mangrove and paddy areas from the satellite detected water extent.

1.1. Figure 1: Satellite detected water extent by landcover type as of 14 July

2016

http://www.unitar.org/unosat/node/44/2226


3

2. Flood Water Extent

The analysis carried out by UNITAR-UNOSAT, using Sentinel-1 SAR image of 14 July 2016, shows a

total satellite detected water extent of ~2,549 Km² corresponding to ~8% of the total area of Rakhine

State :

~80 Km² of flood water extent corresponded to ~0.25% of the total area of the State.

~2,469 Km² of mangrove and paddy areas corresponded to ~7.70% of the total area of the

State. The areas covered by water at all times are subject to the rising water level during floods

events.

The table below illustrates the recorded statistics of the township level:

Admin boundaries (State/District/

Township)

Satellite Detected Water Extent Area of the Units (km²)

Area of mangrove and paddy

(km²)

% Area of mangrove and paddy

Area of flooded

units (km²)

% Area flooded

Rakhine Kyaukpyu

Ann 6,258 85 1.37 6 0.10 Kyaukpyu 1,167 101 8.65 2 0.19 Ramree 1,169 32 2.77 0 0.04

Maungdaw Buthidaung 2,223 136 6.13 11 0.49 Maungdaw 1,466 205 13.98 4 0.26

Mrauk-U Kyauktaw 1,702 250 14.68 7 0.39 Minbya 3,418 173 5.06 6 0.19 Mrauk-U 1,234 250 20.22 13 1.03 Myebon 1,967 270 13.70 10 0.48

Sittwe Pauktaw 927 351 37.83 8 0.82 Ponnagyun 1,126 191 16.98 7 0.66 Rathedaung 832 239 28.70 4 0.51 Sittwe 219 92 42.00 0 0.04

Thandwe Toungup 4,792 94 1.97 2 0.03

Total 31,994 2,469 7.71 80 0.25

0

100

200

300

400

Satellite Detected Water Extent

Area of mangrove and paddy (km²) Area of flooded units (km²)


4

2.1. Figure 2: Satellite detected flood water extent intensity by township as

of 14 July 2016


5

3. Population Exposure

The analysis of population exposure, using WorldPop 2015 data, shows that more than 6,500 people

were living within the flood areas, and were directly exposed to the flood event in Rakhine State. By

including the mangrove and paddy areas, the total potentially exposed population reached ~500,000

people representing ~20% of Rakhine State population.

Admin Boundaries (State/District/

Township)

Total Pop (WorldPop)

Population living within Mangrove and Paddy

areas (WorldPop)

Population living within the flood

areas (WorldPop)

Potentially Affected Population (WorldPop)

Rakhine 2,320,275 497,607 6,609 504,216

Kyaukpyu 459,960 25,156 613 25,769

Ann 143,817 6,010 394 6,404

Kyaukpyu 198,351 15,490 188 15,678

Ramree 117,792 3,656 32 3,687

Maungdaw 112,453 23,512 522 24,034

Buthidaung 66,501 11,400 404 11,804

Maungdaw 45,952 12,112 118 12,230

Mrauk-U 803,614 214,648 3,644 218,292

Kyauktaw 207,933 75,814 689 76,503

Minbya 203,127 44,225 708 44,933

Mrauk-U 228,596 59,517 1,685 61,202

Myebon 163,958 35,092 562 35,654

Sittwe 646,323 227,057 1,765 228,822

Pauktaw 174,802 78,575 637 79,212

Ponnagyun 155,802 52,739 607 53,346

Rathedaung 135,039 50,849 396 51,245

Sittwe 180,680 44,894 125 45,019

Thandwe 297,925 7,234 65 7,299

Toungup 137,567 7,234 65 7,299

Total 2,320,275 497,607 6,609 504,216

6,609 Total population

living within the flood areas.

504,216 Total potentially exposed

population (including population

living in areas close to Mangrove

and Paddy zones)


6

3.1. Figure 3: Total flood affected population aggregated to townships as

of 14 July 2016


7

4. Affected Transport Network

The analysis of the affected transportation network, using the transportation network data of June 2010,

shows that more than 230 Kms of Rakhine State roads were potentially affected as of 14 July 2016:

- ~ 60 Km of major roads.

- ~172 Km of other types of roads.

Admin Boundaries (State/District/

Township)

Major Roads Other Roads Total roads

Roads of the unit (km)

Affected Roads (km)


Affected Roads (km)


Affected Roads (km)

Rakhine 895 61 945 172 1,841 233

Kyaukpyu 290 3 127 7 418 10

Ann 175 1 82 6 257 7

Kyaukpyu 65 1 5 0 70 1

Ramree 50 1 41 1 91 2

Maungdaw 458 103 458 103

Buthidaung 119 31 119 31

Maungdaw 339 72 339 72

Mrauk-U 259 46 62 11 322 57

Kyauktaw 64 9 19 5 83 14

Minbya 76 18 22 2 99 21

Mrauk-U 51 16 21 4 73 20

Myebon 67 2 67 2

Sittwe 74 9 163 50 238 60

Ponnagyun 50 7 21 7 72 15

Rathedaung 99 33 99 33

Sittwe 24 2 43 10 67 12

Thandwe 272 2 134 1 406 4

Toungup 183 2 39 1 222 4

Total 895 61 945 172 1,841 233

Rathedaung, Mrauk-U, Buthidaung, Maungdaw and Minbya townships contain high levels of potentially

affected roads (more than 20%).


8

4.1. Figure 4: Potentially affected roads as of 14 July 2016


UNITAR, Palais des Nations,

CH-1211 Geneva 10, Switzerland

Telephone:+41 22 767 4020

Facsimile:+41 22 917 8047

Email:[email protected]

www.unitar.org/unosat

The depiction and use of boundaries, geographic names and related data shown here are not warranted

to be error-free nor do they imply official endorsement or acceptance by the United Nations. UNOSAT

is a program of the United Nations Institute for Training and Research (UNITAR), providing satellite

imagery and related geographic information, research and analysis to UN humanitarian and

development agencies and their implementing partners. Please send feedback to UNITAR-UNOSAT.

floods in rakhine state, myanmar - unitar · 2016-08-03 · floods in rakhine state, myanmar:...

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