Floods in Rakhine State, Myanmar - UNITAR · Floods in Rakhine State, Myanmar: Situation Analysis...
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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
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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.
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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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
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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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)
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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2.1. Figure 2: Satellite detected flood water extent intensity by township as
of 14 July 2016
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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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)
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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3.1. Figure 3: Total flood affected population aggregated to townships as
of 14 July 2016
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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)
Roads of the unit (km)
Affected Roads (km)
Roads of the unit (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%).
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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4.1. Figure 4: Potentially affected roads as of 14 July 2016
Floods in Rakhine State, Myanmar: Situation Analysis Preliminary Report
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